Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* read.c - read a source file - |
a986926b | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 1997 |
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" | |
fecd2382 | 47 | #include "obstack.h" |
9a7d824a | 48 | #include "listing.h" |
a69e5977 | 49 | #include "ecoff.h" |
9a7d824a | 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)); |
5ac34ac3 | 209 | static segT get_segmented_expression PARAMS ((expressionS *expP)); |
016e0d42 | 210 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); |
016e0d42 | 211 | static void pobegin PARAMS ((void)); |
7e047ac2 | 212 | static int get_line_sb PARAMS ((sb *)); |
fecd2382 | 213 | \f |
6efd877d | 214 | |
016e0d42 ILT |
215 | void |
216 | read_begin () | |
fecd2382 | 217 | { |
016e0d42 | 218 | const char *p; |
f8701a3f | 219 | |
6efd877d KR |
220 | pobegin (); |
221 | obj_read_begin_hook (); | |
f8701a3f | 222 | |
4380166d KR |
223 | /* Something close -- but not too close -- to a multiple of 1024. |
224 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
6594d6b9 KR |
225 | obstack_begin (¬es, chunksize); |
226 | obstack_begin (&cond_obstack, chunksize); | |
f8701a3f | 227 | |
f8701a3f SC |
228 | /* Use machine dependent syntax */ |
229 | for (p = line_separator_chars; *p; p++) | |
58d4951d | 230 | is_end_of_line[(unsigned char) *p] = 1; |
f8701a3f | 231 | /* Use more. FIXME-SOMEDAY. */ |
1356d77d ILT |
232 | |
233 | if (flag_mri) | |
234 | lex_type['?'] = 3; | |
fecd2382 RP |
235 | } |
236 | \f | |
237 | /* set up pseudo-op tables */ | |
238 | ||
1356d77d | 239 | static struct hash_control *po_hash; |
fecd2382 | 240 | |
016e0d42 | 241 | static const pseudo_typeS potable[] = |
fecd2382 | 242 | { |
6efd877d KR |
243 | {"abort", s_abort, 0}, |
244 | {"align", s_align_ptwo, 0}, | |
245 | {"ascii", stringer, 0}, | |
246 | {"asciz", stringer, 1}, | |
931a8fab | 247 | {"balign", s_align_bytes, 0}, |
4080c270 ILT |
248 | {"balignw", s_align_bytes, -2}, |
249 | {"balignl", s_align_bytes, -4}, | |
f8701a3f | 250 | /* block */ |
6efd877d KR |
251 | {"byte", cons, 1}, |
252 | {"comm", s_comm, 0}, | |
1356d77d ILT |
253 | {"common", s_mri_common, 0}, |
254 | {"common.s", s_mri_common, 1}, | |
6efd877d | 255 | {"data", s_data, 0}, |
1356d77d ILT |
256 | {"dc", cons, 2}, |
257 | {"dc.b", cons, 1}, | |
258 | {"dc.d", float_cons, 'd'}, | |
259 | {"dc.l", cons, 4}, | |
260 | {"dc.s", float_cons, 'f'}, | |
261 | {"dc.w", cons, 2}, | |
262 | {"dc.x", float_cons, 'x'}, | |
e28c40d7 ILT |
263 | {"dcb", s_space, 2}, |
264 | {"dcb.b", s_space, 1}, | |
265 | {"dcb.d", s_float_space, 'd'}, | |
266 | {"dcb.l", s_space, 4}, | |
267 | {"dcb.s", s_float_space, 'f'}, | |
268 | {"dcb.w", s_space, 2}, | |
269 | {"dcb.x", s_float_space, 'x'}, | |
1356d77d ILT |
270 | {"ds", s_space, 2}, |
271 | {"ds.b", s_space, 1}, | |
e28c40d7 | 272 | {"ds.d", s_space, 8}, |
1356d77d | 273 | {"ds.l", s_space, 4}, |
e28c40d7 ILT |
274 | {"ds.p", s_space, 12}, |
275 | {"ds.s", s_space, 4}, | |
1356d77d | 276 | {"ds.w", s_space, 2}, |
e28c40d7 | 277 | {"ds.x", s_space, 12}, |
42ac8fa8 | 278 | {"debug", s_ignore, 0}, |
604633ae | 279 | #ifdef S_SET_DESC |
4064305e | 280 | {"desc", s_desc, 0}, |
604633ae | 281 | #endif |
f8701a3f | 282 | /* dim */ |
6efd877d | 283 | {"double", float_cons, 'd'}, |
f8701a3f | 284 | /* dsect */ |
6efd877d KR |
285 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
286 | {"else", s_else, 0}, | |
e28c40d7 | 287 | {"elsec", s_else, 0}, |
6efd877d | 288 | {"end", s_end, 0}, |
e28c40d7 | 289 | {"endc", s_endif, 0}, |
6efd877d | 290 | {"endif", s_endif, 0}, |
f8701a3f | 291 | /* endef */ |
6efd877d | 292 | {"equ", s_set, 0}, |
42ac8fa8 | 293 | {"err", s_err, 0}, |
7e047ac2 | 294 | {"exitm", s_mexit, 0}, |
f8701a3f | 295 | /* extend */ |
6efd877d | 296 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
9a7d824a ILT |
297 | {"appfile", s_app_file, 1}, |
298 | {"appline", s_app_line, 0}, | |
e28c40d7 | 299 | {"fail", s_fail, 0}, |
6efd877d KR |
300 | {"file", s_app_file, 0}, |
301 | {"fill", s_fill, 0}, | |
302 | {"float", float_cons, 'f'}, | |
e28c40d7 | 303 | {"format", s_ignore, 0}, |
6efd877d KR |
304 | {"global", s_globl, 0}, |
305 | {"globl", s_globl, 0}, | |
306 | {"hword", cons, 2}, | |
e28c40d7 | 307 | {"if", s_if, (int) O_ne}, |
7e047ac2 | 308 | {"ifc", s_ifc, 0}, |
6efd877d | 309 | {"ifdef", s_ifdef, 0}, |
e28c40d7 | 310 | {"ifeq", s_if, (int) O_eq}, |
6efd877d | 311 | {"ifeqs", s_ifeqs, 0}, |
e28c40d7 ILT |
312 | {"ifge", s_if, (int) O_ge}, |
313 | {"ifgt", s_if, (int) O_gt}, | |
314 | {"ifle", s_if, (int) O_le}, | |
315 | {"iflt", s_if, (int) O_lt}, | |
7e047ac2 | 316 | {"ifnc", s_ifc, 1}, |
6efd877d | 317 | {"ifndef", s_ifdef, 1}, |
e28c40d7 | 318 | {"ifne", s_if, (int) O_ne}, |
6efd877d KR |
319 | {"ifnes", s_ifeqs, 1}, |
320 | {"ifnotdef", s_ifdef, 1}, | |
321 | {"include", s_include, 0}, | |
322 | {"int", cons, 4}, | |
7e047ac2 | 323 | {"irp", s_irp, 0}, |
42ac8fa8 | 324 | {"irep", s_irp, 0}, |
7e047ac2 | 325 | {"irpc", s_irp, 1}, |
42ac8fa8 | 326 | {"irepc", s_irp, 1}, |
6efd877d KR |
327 | {"lcomm", s_lcomm, 0}, |
328 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
7d3741ed | 329 | {"linkonce", s_linkonce, 0}, |
6efd877d | 330 | {"list", listing_list, 1}, /* Turn listing on */ |
e28c40d7 | 331 | {"llen", listing_psize, 1}, |
6efd877d KR |
332 | {"long", cons, 4}, |
333 | {"lsym", s_lsym, 0}, | |
7e047ac2 ILT |
334 | {"macro", s_macro, 0}, |
335 | {"mexit", s_mexit, 0}, | |
20710f1c ILT |
336 | {"mri", s_mri, 0}, |
337 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
cef72a92 | 338 | {"name", s_ignore, 0}, |
e28c40d7 | 339 | {"noformat", s_ignore, 0}, |
6efd877d | 340 | {"nolist", listing_list, 0}, /* Turn listing off */ |
69e077f3 | 341 | {"nopage", listing_nopage, 0}, |
80aab579 | 342 | {"octa", cons, 16}, |
e28c40d7 | 343 | {"offset", s_struct, 0}, |
6efd877d | 344 | {"org", s_org, 0}, |
931a8fab | 345 | {"p2align", s_align_ptwo, 0}, |
4080c270 ILT |
346 | {"p2alignw", s_align_ptwo, -2}, |
347 | {"p2alignl", s_align_ptwo, -4}, | |
69e077f3 ILT |
348 | {"page", listing_eject, 0}, |
349 | {"plen", listing_psize, 0}, | |
42ac8fa8 | 350 | {"print", s_print, 0}, |
6efd877d | 351 | {"psize", listing_psize, 0}, /* set paper size */ |
42ac8fa8 | 352 | {"purgem", s_purgem, 0}, |
80aab579 | 353 | {"quad", cons, 8}, |
42ac8fa8 | 354 | {"rep", s_rept, 0}, |
7e047ac2 | 355 | {"rept", s_rept, 0}, |
86038ada | 356 | {"rva", s_rva, 4}, |
6efd877d | 357 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ |
f8701a3f SC |
358 | /* scl */ |
359 | /* sect */ | |
6efd877d KR |
360 | {"set", s_set, 0}, |
361 | {"short", cons, 2}, | |
362 | {"single", float_cons, 'f'}, | |
f8701a3f | 363 | /* size */ |
6efd877d | 364 | {"space", s_space, 0}, |
adeab39b | 365 | {"skip", s_space, 0}, |
e14994d9 | 366 | {"spc", s_ignore, 0}, |
4064305e SS |
367 | {"stabd", s_stab, 'd'}, |
368 | {"stabn", s_stab, 'n'}, | |
369 | {"stabs", s_stab, 's'}, | |
ba71c54d | 370 | {"string", stringer, 1}, |
e28c40d7 | 371 | {"struct", s_struct, 0}, |
f8701a3f | 372 | /* tag */ |
6efd877d | 373 | {"text", s_text, 0}, |
6ef37255 KR |
374 | |
375 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
376 | won't be able to use it for a while -- probably a year or more. | |
377 | But once this has been released, check with gcc maintainers | |
378 | before deleting it or even changing the spelling. */ | |
379 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
380 | /* If we're folding case -- done for some targets, not necessarily | |
381 | all -- the above string in an input file will be converted to | |
382 | this one. Match it either way... */ | |
383 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
384 | ||
6efd877d | 385 | {"title", listing_title, 0}, /* Listing title */ |
e14994d9 | 386 | {"ttl", listing_title, 0}, |
f8701a3f SC |
387 | /* type */ |
388 | /* use */ | |
389 | /* val */ | |
e14994d9 | 390 | {"xcom", s_comm, 0}, |
1356d77d | 391 | {"xdef", s_globl, 0}, |
e14994d9 | 392 | {"xref", s_ignore, 0}, |
4064305e | 393 | {"xstabs", s_xstab, 's'}, |
6efd877d | 394 | {"word", cons, 2}, |
c02fd8dc | 395 | {"zero", s_space, 0}, |
6efd877d | 396 | {NULL} /* end sentinel */ |
fecd2382 RP |
397 | }; |
398 | ||
2209b19c KR |
399 | static int pop_override_ok = 0; |
400 | static const char *pop_table_name; | |
401 | ||
402 | void | |
403 | pop_insert (table) | |
404 | const pseudo_typeS *table; | |
6efd877d | 405 | { |
2209b19c | 406 | const char *errtxt; |
6efd877d | 407 | const pseudo_typeS *pop; |
2209b19c KR |
408 | for (pop = table; pop->poc_name; pop++) |
409 | { | |
410 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
411 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
6594d6b9 KR |
412 | as_fatal ("error constructing %s pseudo-op table: %s", pop_table_name, |
413 | errtxt); | |
2209b19c KR |
414 | } |
415 | } | |
6efd877d | 416 | |
2209b19c KR |
417 | #ifndef md_pop_insert |
418 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
419 | #endif | |
420 | ||
421 | #ifndef obj_pop_insert | |
422 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
423 | #endif | |
424 | ||
425 | static void | |
426 | pobegin () | |
427 | { | |
6efd877d KR |
428 | po_hash = hash_new (); |
429 | ||
430 | /* Do the target-specific pseudo ops. */ | |
2209b19c KR |
431 | pop_table_name = "md"; |
432 | md_pop_insert (); | |
6efd877d KR |
433 | |
434 | /* Now object specific. Skip any that were in the target table. */ | |
2209b19c KR |
435 | pop_table_name = "obj"; |
436 | pop_override_ok = 1; | |
437 | obj_pop_insert (); | |
6efd877d KR |
438 | |
439 | /* Now portable ones. Skip any that we've seen already. */ | |
2209b19c KR |
440 | pop_table_name = "standard"; |
441 | pop_insert (potable); | |
442 | } | |
fecd2382 | 443 | \f |
58d4951d ILT |
444 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
445 | if (ignore_input ()) \ | |
446 | { \ | |
447 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
448 | if (input_line_pointer == buffer_limit) \ | |
449 | break; \ | |
450 | continue; \ | |
f8701a3f | 451 | } |
a39116f1 | 452 | |
fecd2382 | 453 | |
86038ada ILT |
454 | /* This function is used when scrubbing the characters between #APP |
455 | and #NO_APP. */ | |
456 | ||
457 | static char *scrub_string; | |
458 | static char *scrub_string_end; | |
459 | ||
460 | static int | |
461 | scrub_from_string (from) | |
462 | char **from; | |
463 | { | |
464 | int size; | |
465 | ||
466 | *from = scrub_string; | |
467 | size = scrub_string_end - scrub_string; | |
468 | scrub_string = scrub_string_end; | |
469 | return size; | |
470 | } | |
471 | ||
fecd2382 RP |
472 | /* read_a_source_file() |
473 | * | |
474 | * We read the file, putting things into a web that | |
475 | * represents what we have been reading. | |
476 | */ | |
6efd877d KR |
477 | void |
478 | read_a_source_file (name) | |
479 | char *name; | |
fecd2382 | 480 | { |
f8701a3f | 481 | register char c; |
6efd877d | 482 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 483 | register int temp; |
6efd877d | 484 | pseudo_typeS *pop; |
f8701a3f | 485 | |
6efd877d | 486 | buffer = input_scrub_new_file (name); |
f8701a3f | 487 | |
6efd877d KR |
488 | listing_file (name); |
489 | listing_newline (""); | |
f8701a3f | 490 | |
6efd877d KR |
491 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
492 | { /* We have another line to parse. */ | |
493 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
494 | contin: /* JF this goto is my fault I admit it. |
495 | Someone brave please re-write the whole | |
496 | input section here? Pleeze??? */ | |
6efd877d | 497 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
498 | { |
499 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
500 | |
501 | /* | |
502 | * We now have input_line_pointer->1st char of next line. | |
503 | * If input_line_pointer [-1] == '\n' then we just | |
504 | * scanned another line: so bump line counters. | |
505 | */ | |
d2550c72 | 506 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
6efd877d | 507 | { |
a2a5a4fa KR |
508 | #ifdef md_start_line_hook |
509 | md_start_line_hook (); | |
510 | #endif | |
511 | ||
385ce433 JL |
512 | if (input_line_pointer[-1] == '\n') |
513 | bump_line_counters (); | |
f8701a3f | 514 | |
7e047ac2 ILT |
515 | line_label = NULL; |
516 | ||
cef72a92 | 517 | if (flag_m68k_mri |
1356d77d ILT |
518 | #ifdef LABELS_WITHOUT_COLONS |
519 | || 1 | |
520 | #endif | |
521 | ) | |
6efd877d | 522 | { |
1356d77d ILT |
523 | /* Text at the start of a line must be a label, we |
524 | run down and stick a colon in. */ | |
525 | if (is_name_beginner (*input_line_pointer)) | |
526 | { | |
527 | char *line_start = input_line_pointer; | |
7e047ac2 ILT |
528 | char c; |
529 | ||
530 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1356d77d | 531 | |
7e047ac2 ILT |
532 | c = get_symbol_end (); |
533 | ||
534 | /* In MRI mode, the EQU pseudoop must be | |
535 | handled specially. */ | |
cef72a92 | 536 | if (flag_m68k_mri) |
1356d77d | 537 | { |
7e047ac2 ILT |
538 | char *rest = input_line_pointer + 1; |
539 | ||
540 | if (*rest == ':') | |
541 | ++rest; | |
542 | if (*rest == ' ' || *rest == '\t') | |
543 | ++rest; | |
544 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
545 | || strncasecmp (rest, "SET", 3) == 0) | |
546 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1356d77d | 547 | { |
7e047ac2 ILT |
548 | input_line_pointer = rest + 3; |
549 | equals (line_start); | |
550 | continue; | |
1356d77d ILT |
551 | } |
552 | } | |
6efd877d | 553 | |
7e047ac2 ILT |
554 | line_label = colon (line_start); |
555 | ||
1356d77d ILT |
556 | *input_line_pointer = c; |
557 | if (c == ':') | |
558 | input_line_pointer++; | |
559 | } | |
6efd877d | 560 | } |
9471a360 | 561 | } |
f8701a3f | 562 | |
f8701a3f SC |
563 | /* |
564 | * We are at the begining of a line, or similar place. | |
565 | * We expect a well-formed assembler statement. | |
566 | * A "symbol-name:" is a statement. | |
567 | * | |
568 | * Depending on what compiler is used, the order of these tests | |
569 | * may vary to catch most common case 1st. | |
570 | * Each test is independent of all other tests at the (top) level. | |
571 | * PLEASE make a compiler that doesn't use this assembler. | |
572 | * It is crufty to waste a compiler's time encoding things for this | |
573 | * assembler, which then wastes more time decoding it. | |
574 | * (And communicating via (linear) files is silly! | |
575 | * If you must pass stuff, please pass a tree!) | |
576 | */ | |
9471a360 KR |
577 | if ((c = *input_line_pointer++) == '\t' |
578 | || c == ' ' | |
579 | || c == '\f' | |
580 | || c == 0) | |
6efd877d KR |
581 | { |
582 | c = *input_line_pointer++; | |
583 | } | |
584 | know (c != ' '); /* No further leading whitespace. */ | |
585 | LISTING_NEWLINE (); | |
f8701a3f SC |
586 | /* |
587 | * C is the 1st significant character. | |
588 | * Input_line_pointer points after that character. | |
589 | */ | |
6efd877d | 590 | if (is_name_beginner (c)) |
6ef37255 KR |
591 | { |
592 | /* want user-defined label or pseudo/opcode */ | |
6efd877d KR |
593 | HANDLE_CONDITIONAL_ASSEMBLY (); |
594 | ||
f8701a3f | 595 | s = --input_line_pointer; |
6efd877d | 596 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
597 | /* |
598 | * C is character after symbol. | |
599 | * That character's place in the input line is now '\0'. | |
600 | * S points to the beginning of the symbol. | |
601 | * [In case of pseudo-op, s->'.'.] | |
602 | * Input_line_pointer->'\0' where c was. | |
603 | */ | |
9a7d824a | 604 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d | 605 | { |
cef72a92 | 606 | if (flag_m68k_mri) |
7e047ac2 ILT |
607 | { |
608 | char *rest = input_line_pointer + 1; | |
609 | ||
610 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
611 | ||
612 | if (*rest == ':') | |
613 | ++rest; | |
614 | if (*rest == ' ' || *rest == '\t') | |
615 | ++rest; | |
616 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
617 | || strncasecmp (rest, "SET", 3) == 0) | |
618 | && (rest[3] == ' ' || rest[3] == '\t')) | |
619 | { | |
620 | input_line_pointer = rest + 3; | |
621 | equals (s); | |
622 | continue; | |
623 | } | |
624 | } | |
625 | ||
626 | line_label = colon (s); /* user-defined label */ | |
6efd877d | 627 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ |
f8701a3f | 628 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
629 | SKIP_WHITESPACE (); |
630 | ||
f8701a3f | 631 | |
6efd877d | 632 | } |
4064305e SS |
633 | else if (c == '=' |
634 | || (input_line_pointer[1] == '=' | |
635 | #ifdef TC_EQUAL_IN_INSN | |
636 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
637 | #endif | |
638 | )) | |
9c6d3f66 | 639 | { |
6efd877d KR |
640 | equals (s); |
641 | demand_empty_rest_of_line (); | |
642 | } | |
643 | else | |
644 | { /* expect pseudo-op or machine instruction */ | |
8ff6f40e ILT |
645 | pop = NULL; |
646 | ||
d4c8cbd8 JL |
647 | #define IGNORE_OPCODE_CASE |
648 | #ifdef IGNORE_OPCODE_CASE | |
649 | { | |
650 | char *s2 = s; | |
651 | while (*s2) | |
652 | { | |
653 | if (isupper (*s2)) | |
654 | *s2 = tolower (*s2); | |
655 | s2++; | |
656 | } | |
657 | } | |
658 | #endif | |
659 | ||
cef72a92 | 660 | if (flag_m68k_mri |
8ff6f40e | 661 | #ifdef NO_PSEUDO_DOT |
1356d77d | 662 | || 1 |
8ff6f40e | 663 | #endif |
1356d77d ILT |
664 | ) |
665 | { | |
666 | /* The MRI assembler and the m88k use pseudo-ops | |
667 | without a period. */ | |
668 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
669 | if (pop != NULL && pop->poc_handler == NULL) | |
670 | pop = NULL; | |
671 | } | |
8ff6f40e | 672 | |
7e047ac2 | 673 | if (pop != NULL |
cef72a92 | 674 | || (! flag_m68k_mri && *s == '.')) |
6efd877d KR |
675 | { |
676 | /* | |
9471a360 KR |
677 | * PSEUDO - OP. |
678 | * | |
679 | * WARNING: c has next char, which may be end-of-line. | |
680 | * We lookup the pseudo-op table with s+1 because we | |
681 | * already know that the pseudo-op begins with a '.'. | |
682 | */ | |
6efd877d | 683 | |
8ff6f40e ILT |
684 | if (pop == NULL) |
685 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d | 686 | |
286cb27a ILT |
687 | /* In MRI mode, we may need to insert an |
688 | automatic alignment directive. What a hack | |
689 | this is. */ | |
690 | if (mri_pending_align | |
691 | && (pop == NULL | |
692 | || ! ((pop->poc_handler == cons | |
693 | && pop->poc_val == 1) | |
694 | || (pop->poc_handler == s_space | |
a986926b ILT |
695 | && pop->poc_val == 1) |
696 | #ifdef tc_conditional_pseudoop | |
697 | || tc_conditional_pseudoop (pop) | |
698 | #endif | |
699 | || pop->poc_handler == s_if | |
700 | || pop->poc_handler == s_ifdef | |
701 | || pop->poc_handler == s_ifc | |
702 | || pop->poc_handler == s_ifeqs | |
703 | || pop->poc_handler == s_else | |
704 | || pop->poc_handler == s_endif))) | |
286cb27a | 705 | { |
71dd3c40 | 706 | do_align (1, (char *) NULL, 0); |
286cb27a ILT |
707 | mri_pending_align = 0; |
708 | } | |
709 | ||
6efd877d | 710 | /* Print the error msg now, while we still can */ |
8ff6f40e | 711 | if (pop == NULL) |
6efd877d KR |
712 | { |
713 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 714 | *input_line_pointer = c; |
6efd877d | 715 | s_ignore (0); |
46b81190 | 716 | continue; |
6efd877d KR |
717 | } |
718 | ||
719 | /* Put it back for error messages etc. */ | |
720 | *input_line_pointer = c; | |
9c6d3f66 KR |
721 | /* The following skip of whitespace is compulsory. |
722 | A well shaped space is sometimes all that separates | |
723 | keyword from operands. */ | |
6efd877d | 724 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 725 | input_line_pointer++; |
6efd877d | 726 | /* |
9471a360 KR |
727 | * Input_line is restored. |
728 | * Input_line_pointer->1st non-blank char | |
729 | * after pseudo-operation. | |
730 | */ | |
46b81190 | 731 | (*pop->poc_handler) (pop->poc_val); |
e28c40d7 ILT |
732 | |
733 | /* If that was .end, just get out now. */ | |
734 | if (pop->poc_handler == s_end) | |
735 | goto quit; | |
6efd877d KR |
736 | } |
737 | else | |
20868ec6 | 738 | { |
4026c122 ILT |
739 | int inquote = 0; |
740 | ||
6efd877d KR |
741 | /* WARNING: c has char, which may be end-of-line. */ |
742 | /* Also: input_line_pointer->`\0` where c was. */ | |
743 | *input_line_pointer = c; | |
58d4951d | 744 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4026c122 | 745 | || inquote |
4064305e SS |
746 | #ifdef TC_EOL_IN_INSN |
747 | || TC_EOL_IN_INSN (input_line_pointer) | |
748 | #endif | |
749 | ) | |
6efd877d | 750 | { |
cef72a92 | 751 | if (flag_m68k_mri && *input_line_pointer == '\'') |
4026c122 | 752 | inquote = ! inquote; |
6efd877d KR |
753 | input_line_pointer++; |
754 | } | |
f8701a3f | 755 | |
6efd877d KR |
756 | c = *input_line_pointer; |
757 | *input_line_pointer = '\0'; | |
f8701a3f | 758 | |
326d16ca KH |
759 | #ifdef OBJ_GENERATE_ASM_LINENO |
760 | if (generate_asm_lineno == 0) | |
761 | { | |
f10a96cb | 762 | if (ecoff_no_current_file ()) |
326d16ca KH |
763 | generate_asm_lineno = 1; |
764 | } | |
f10a96cb ILT |
765 | if (generate_asm_lineno == 1) |
766 | { | |
1b434ced ILT |
767 | unsigned int lineno; |
768 | char *s; | |
769 | ||
daad3bbf | 770 | as_where (&s, &lineno); |
326d16ca | 771 | OBJ_GENERATE_ASM_LINENO (s, lineno); |
f10a96cb | 772 | } |
daad3bbf KH |
773 | #endif |
774 | ||
7e047ac2 ILT |
775 | if (macro_defined) |
776 | { | |
777 | sb out; | |
778 | const char *err; | |
779 | ||
780 | if (check_macro (s, &out, '\0', &err)) | |
781 | { | |
782 | if (err != NULL) | |
783 | as_bad (err); | |
784 | *input_line_pointer++ = c; | |
785 | input_scrub_include_sb (&out, | |
786 | input_line_pointer); | |
787 | sb_kill (&out); | |
788 | buffer_limit = | |
789 | input_scrub_next_buffer (&input_line_pointer); | |
790 | continue; | |
791 | } | |
792 | } | |
793 | ||
20868ec6 ILT |
794 | if (mri_pending_align) |
795 | { | |
796 | do_align (1, (char *) NULL, 0); | |
797 | mri_pending_align = 0; | |
798 | } | |
799 | ||
6efd877d | 800 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 801 | |
6efd877d | 802 | *input_line_pointer++ = c; |
f8701a3f | 803 | |
d4c8cbd8 JL |
804 | /* We resume loop AFTER the end-of-line from |
805 | this instruction. */ | |
6efd877d | 806 | } /* if (*s=='.') */ |
6efd877d | 807 | } /* if c==':' */ |
f8701a3f | 808 | continue; |
6efd877d | 809 | } /* if (is_name_beginner(c) */ |
f8701a3f | 810 | |
f8701a3f | 811 | |
d4c8cbd8 | 812 | /* Empty statement? */ |
58d4951d | 813 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 814 | continue; |
6efd877d | 815 | |
9777b772 KR |
816 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) |
817 | && isdigit (c)) | |
d4c8cbd8 JL |
818 | { |
819 | /* local label ("4:") */ | |
6efd877d KR |
820 | char *backup = input_line_pointer; |
821 | ||
822 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
823 | ||
824 | temp = c - '0'; | |
825 | ||
826 | while (isdigit (*input_line_pointer)) | |
827 | { | |
828 | temp = (temp * 10) + *input_line_pointer - '0'; | |
829 | ++input_line_pointer; | |
830 | } /* read the whole number */ | |
831 | ||
9777b772 KR |
832 | if (LOCAL_LABELS_DOLLAR |
833 | && *input_line_pointer == '$' | |
6efd877d KR |
834 | && *(input_line_pointer + 1) == ':') |
835 | { | |
836 | input_line_pointer += 2; | |
837 | ||
838 | if (dollar_label_defined (temp)) | |
839 | { | |
840 | as_fatal ("label \"%d$\" redefined", temp); | |
841 | } | |
842 | ||
843 | define_dollar_label (temp); | |
844 | colon (dollar_label_name (temp, 0)); | |
845 | continue; | |
846 | } | |
6efd877d | 847 | |
9777b772 KR |
848 | if (LOCAL_LABELS_FB |
849 | && *input_line_pointer++ == ':') | |
6efd877d KR |
850 | { |
851 | fb_label_instance_inc (temp); | |
852 | colon (fb_label_name (temp, 0)); | |
853 | continue; | |
854 | } | |
6efd877d KR |
855 | |
856 | input_line_pointer = backup; | |
857 | } /* local label ("4:") */ | |
f8701a3f | 858 | |
6efd877d KR |
859 | if (c && strchr (line_comment_chars, c)) |
860 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
861 | char *ends; |
862 | char *new_buf; | |
863 | char *new_tmp; | |
604633ae | 864 | unsigned int new_length; |
f8701a3f | 865 | char *tmp_buf = 0; |
6efd877d KR |
866 | |
867 | bump_line_counters (); | |
868 | s = input_line_pointer; | |
869 | if (strncmp (s, "APP\n", 4)) | |
870 | continue; /* We ignore it */ | |
871 | s += 4; | |
872 | ||
873 | ends = strstr (s, "#NO_APP\n"); | |
874 | ||
875 | if (!ends) | |
876 | { | |
604633ae ILT |
877 | unsigned int tmp_len; |
878 | unsigned int num; | |
6efd877d | 879 | |
f8701a3f SC |
880 | /* The end of the #APP wasn't in this buffer. We |
881 | keep reading in buffers until we find the #NO_APP | |
882 | that goes with this #APP There is one. The specs | |
883 | guarentee it. . . */ | |
6efd877d | 884 | tmp_len = buffer_limit - s; |
85825401 | 885 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 886 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
887 | do |
888 | { | |
889 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 890 | if (!new_tmp) |
6efd877d | 891 | break; |
f8701a3f | 892 | else |
6efd877d | 893 | buffer_limit = new_tmp; |
f8701a3f | 894 | input_line_pointer = buffer; |
6efd877d | 895 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 896 | if (ends) |
6efd877d | 897 | num = ends - buffer; |
f8701a3f | 898 | else |
6efd877d KR |
899 | num = buffer_limit - buffer; |
900 | ||
901 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
9eb5f4b8 | 902 | memcpy (tmp_buf + tmp_len, buffer, num); |
6efd877d KR |
903 | tmp_len += num; |
904 | } | |
905 | while (!ends); | |
906 | ||
907 | input_line_pointer = ends ? ends + 8 : NULL; | |
908 | ||
909 | s = tmp_buf; | |
910 | ends = s + tmp_len; | |
911 | ||
912 | } | |
913 | else | |
914 | { | |
915 | input_line_pointer = ends + 8; | |
916 | } | |
6efd877d KR |
917 | |
918 | scrub_string = s; | |
86038ada ILT |
919 | scrub_string_end = ends; |
920 | ||
921 | new_length = ends - s; | |
922 | new_buf = (char *) xmalloc (new_length); | |
923 | new_tmp = new_buf; | |
6efd877d KR |
924 | for (;;) |
925 | { | |
86038ada ILT |
926 | int space; |
927 | int size; | |
f8701a3f | 928 | |
86038ada ILT |
929 | space = (new_buf + new_length) - new_tmp; |
930 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
931 | ||
932 | if (size < space) | |
6efd877d | 933 | { |
86038ada ILT |
934 | new_tmp += size; |
935 | break; | |
f8701a3f | 936 | } |
86038ada ILT |
937 | |
938 | new_buf = xrealloc (new_buf, new_length + 100); | |
939 | new_tmp = new_buf + new_length; | |
940 | new_length += 100; | |
fecd2382 | 941 | } |
f8701a3f SC |
942 | |
943 | if (tmp_buf) | |
6efd877d KR |
944 | free (tmp_buf); |
945 | old_buffer = buffer; | |
946 | old_input = input_line_pointer; | |
947 | old_limit = buffer_limit; | |
948 | buffer = new_buf; | |
949 | input_line_pointer = new_buf; | |
950 | buffer_limit = new_tmp; | |
f8701a3f SC |
951 | continue; |
952 | } | |
953 | ||
6efd877d | 954 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f | 955 | |
cef72a92 ILT |
956 | #ifdef tc_unrecognized_line |
957 | if (tc_unrecognized_line (c)) | |
958 | continue; | |
959 | #endif | |
960 | ||
f8701a3f SC |
961 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ |
962 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
963 | ignore_rest_of_line (); |
964 | } /* while (input_line_pointer<buffer_limit) */ | |
a2a5a4fa KR |
965 | |
966 | #ifdef md_after_pass_hook | |
967 | md_after_pass_hook (); | |
968 | #endif | |
969 | ||
6efd877d KR |
970 | if (old_buffer) |
971 | { | |
86038ada | 972 | free (buffer); |
6efd877d KR |
973 | bump_line_counters (); |
974 | if (old_input != 0) | |
975 | { | |
976 | buffer = old_buffer; | |
977 | input_line_pointer = old_input; | |
978 | buffer_limit = old_limit; | |
f8701a3f SC |
979 | old_buffer = 0; |
980 | goto contin; | |
981 | } | |
982 | } | |
6efd877d | 983 | } /* while (more buffers to scan) */ |
f8701a3f | 984 | |
e28c40d7 | 985 | quit: |
20868ec6 ILT |
986 | |
987 | #ifdef md_cleanup | |
988 | md_cleanup(); | |
989 | #endif | |
e28c40d7 | 990 | input_scrub_close (); /* Close the input file */ |
4075afe1 | 991 | } |
fecd2382 | 992 | |
18c9057f ILT |
993 | /* For most MRI pseudo-ops, the line actually ends at the first |
994 | nonquoted space. This function looks for that point, stuffs a null | |
995 | in, and sets *STOPCP to the character that used to be there, and | |
42ac8fa8 ILT |
996 | returns the location. |
997 | ||
998 | Until I hear otherwise, I am going to assume that this is only true | |
999 | for the m68k MRI assembler. */ | |
18c9057f ILT |
1000 | |
1001 | char * | |
1002 | mri_comment_field (stopcp) | |
1003 | char *stopcp; | |
1004 | { | |
42ac8fa8 ILT |
1005 | #ifdef TC_M68K |
1006 | ||
18c9057f ILT |
1007 | char *s; |
1008 | int inquote = 0; | |
1009 | ||
cef72a92 | 1010 | know (flag_m68k_mri); |
18c9057f ILT |
1011 | |
1012 | for (s = input_line_pointer; | |
1013 | ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') | |
1014 | || inquote); | |
1015 | s++) | |
1016 | { | |
1017 | if (*s == '\'') | |
1018 | inquote = ! inquote; | |
1019 | } | |
1020 | *stopcp = *s; | |
1021 | *s = '\0'; | |
1022 | return s; | |
42ac8fa8 ILT |
1023 | |
1024 | #else | |
1025 | ||
1026 | char *s; | |
1027 | ||
1028 | for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++) | |
1029 | ; | |
1030 | *stopcp = *s; | |
1031 | *s = '\0'; | |
1032 | return s; | |
1033 | ||
1034 | #endif | |
1035 | ||
18c9057f ILT |
1036 | } |
1037 | ||
1038 | /* Skip to the end of an MRI comment field. */ | |
1039 | ||
1040 | void | |
1041 | mri_comment_end (stop, stopc) | |
1042 | char *stop; | |
1043 | int stopc; | |
1044 | { | |
1045 | know (flag_mri); | |
1046 | ||
1047 | input_line_pointer = stop; | |
1048 | *stop = stopc; | |
1049 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1050 | ++input_line_pointer; | |
1051 | } | |
1052 | ||
6efd877d | 1053 | void |
604633ae ILT |
1054 | s_abort (ignore) |
1055 | int ignore; | |
6efd877d KR |
1056 | { |
1057 | as_fatal (".abort detected. Abandoning ship."); | |
4075afe1 KR |
1058 | } |
1059 | ||
1060 | /* Guts of .align directive. */ | |
1061 | static void | |
71dd3c40 | 1062 | do_align (n, fill, len) |
4075afe1 KR |
1063 | int n; |
1064 | char *fill; | |
71dd3c40 | 1065 | int len; |
4075afe1 KR |
1066 | { |
1067 | #ifdef md_do_align | |
71dd3c40 | 1068 | md_do_align (n, fill, len, just_record_alignment); |
4075afe1 KR |
1069 | #endif |
1070 | if (!fill) | |
1071 | { | |
1072 | /* @@ Fix this right for BFD! */ | |
1073 | static char zero; | |
1074 | static char nop_opcode = NOP_OPCODE; | |
1075 | ||
1076 | if (now_seg != data_section && now_seg != bss_section) | |
1077 | { | |
1078 | fill = &nop_opcode; | |
1079 | } | |
1080 | else | |
1081 | { | |
1082 | fill = &zero; | |
1083 | } | |
71dd3c40 | 1084 | len = 1; |
4075afe1 | 1085 | } |
71dd3c40 | 1086 | |
4075afe1 KR |
1087 | /* Only make a frag if we HAVE to. . . */ |
1088 | if (n && !need_pass_2) | |
71dd3c40 ILT |
1089 | { |
1090 | if (len <= 1) | |
1091 | frag_align (n, *fill); | |
1092 | else | |
1093 | frag_align_pattern (n, fill, len); | |
1094 | } | |
4075afe1 | 1095 | |
c02fd8dc | 1096 | #ifdef md_do_align |
4075afe1 | 1097 | just_record_alignment: |
c02fd8dc ILT |
1098 | #endif |
1099 | ||
4075afe1 KR |
1100 | record_alignment (now_seg, n); |
1101 | } | |
fecd2382 RP |
1102 | |
1103 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
1104 | void |
1105 | s_align_bytes (arg) | |
1106 | int arg; | |
fecd2382 | 1107 | { |
6efd877d | 1108 | register unsigned int temp; |
4075afe1 | 1109 | char temp_fill; |
6efd877d KR |
1110 | unsigned int i = 0; |
1111 | unsigned long max_alignment = 1 << 15; | |
18c9057f ILT |
1112 | char *stop = NULL; |
1113 | char stopc; | |
1114 | ||
1115 | if (flag_mri) | |
1116 | stop = mri_comment_field (&stopc); | |
f8701a3f | 1117 | |
58d4951d | 1118 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
4080c270 ILT |
1119 | { |
1120 | if (arg < 0) | |
1121 | temp = 0; | |
1122 | else | |
1123 | temp = arg; /* Default value from pseudo-op table */ | |
1124 | } | |
6efd877d KR |
1125 | else |
1126 | temp = get_absolute_expression (); | |
f8701a3f | 1127 | |
6efd877d KR |
1128 | if (temp > max_alignment) |
1129 | { | |
1130 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
1131 | } |
1132 | ||
4075afe1 KR |
1133 | /* For the sparc, `.align (1<<n)' actually means `.align n' so we |
1134 | have to convert it. */ | |
6efd877d KR |
1135 | if (temp != 0) |
1136 | { | |
1137 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
1138 | ; | |
f8701a3f | 1139 | } |
6efd877d KR |
1140 | if (temp != 1) |
1141 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 1142 | |
6efd877d KR |
1143 | temp = i; |
1144 | if (*input_line_pointer == ',') | |
1145 | { | |
71dd3c40 | 1146 | offsetT fillval; |
4080c270 | 1147 | int len; |
71dd3c40 | 1148 | |
6efd877d | 1149 | input_line_pointer++; |
71dd3c40 | 1150 | fillval = get_absolute_expression (); |
4080c270 ILT |
1151 | if (arg >= 0) |
1152 | len = 1; | |
1153 | else | |
1154 | len = - arg; | |
1155 | if (len <= 1) | |
71dd3c40 ILT |
1156 | { |
1157 | temp_fill = fillval; | |
4080c270 | 1158 | do_align (temp, &temp_fill, len); |
71dd3c40 ILT |
1159 | } |
1160 | else | |
1161 | { | |
1162 | char ab[16]; | |
1163 | ||
4080c270 | 1164 | if (len > sizeof ab) |
71dd3c40 | 1165 | abort (); |
4080c270 ILT |
1166 | md_number_to_chars (ab, fillval, len); |
1167 | do_align (temp, ab, len); | |
71dd3c40 | 1168 | } |
f8701a3f | 1169 | } |
6efd877d | 1170 | else |
71dd3c40 | 1171 | { |
4080c270 | 1172 | if (arg < 0) |
71dd3c40 ILT |
1173 | as_warn ("expected fill pattern missing"); |
1174 | do_align (temp, (char *) NULL, 0); | |
1175 | } | |
49864cfa | 1176 | |
18c9057f ILT |
1177 | if (flag_mri) |
1178 | mri_comment_end (stop, stopc); | |
1179 | ||
6efd877d | 1180 | demand_empty_rest_of_line (); |
4075afe1 | 1181 | } |
fecd2382 RP |
1182 | |
1183 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d | 1184 | void |
71dd3c40 ILT |
1185 | s_align_ptwo (arg) |
1186 | int arg; | |
6efd877d KR |
1187 | { |
1188 | register int temp; | |
4075afe1 | 1189 | char temp_fill; |
6efd877d | 1190 | long max_alignment = 15; |
18c9057f ILT |
1191 | char *stop = NULL; |
1192 | char stopc; | |
1193 | ||
1194 | if (flag_mri) | |
1195 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1196 | |
1197 | temp = get_absolute_expression (); | |
1198 | if (temp > max_alignment) | |
1199 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
1200 | else if (temp < 0) | |
1201 | { | |
1202 | as_bad ("Alignment negative. 0 assumed."); | |
1203 | temp = 0; | |
1204 | } | |
1205 | if (*input_line_pointer == ',') | |
1206 | { | |
71dd3c40 | 1207 | offsetT fillval; |
4080c270 | 1208 | int len; |
71dd3c40 | 1209 | |
6efd877d | 1210 | input_line_pointer++; |
71dd3c40 | 1211 | fillval = get_absolute_expression (); |
4080c270 ILT |
1212 | if (arg >= 0) |
1213 | len = 1; | |
1214 | else | |
1215 | len = - arg; | |
1216 | if (len <= 1) | |
71dd3c40 ILT |
1217 | { |
1218 | temp_fill = fillval; | |
4080c270 | 1219 | do_align (temp, &temp_fill, len); |
71dd3c40 ILT |
1220 | } |
1221 | else | |
1222 | { | |
1223 | char ab[16]; | |
1224 | ||
4080c270 | 1225 | if (len > sizeof ab) |
71dd3c40 | 1226 | abort (); |
4080c270 ILT |
1227 | md_number_to_chars (ab, fillval, len); |
1228 | do_align (temp, ab, len); | |
71dd3c40 | 1229 | } |
6efd877d KR |
1230 | } |
1231 | else | |
71dd3c40 | 1232 | { |
4080c270 | 1233 | if (arg < 0) |
71dd3c40 ILT |
1234 | as_warn ("expected fill pattern missing"); |
1235 | do_align (temp, (char *) NULL, 0); | |
1236 | } | |
6efd877d | 1237 | |
18c9057f ILT |
1238 | if (flag_mri) |
1239 | mri_comment_end (stop, stopc); | |
1240 | ||
6efd877d | 1241 | demand_empty_rest_of_line (); |
4075afe1 | 1242 | } |
6efd877d KR |
1243 | |
1244 | void | |
604633ae ILT |
1245 | s_comm (ignore) |
1246 | int ignore; | |
6efd877d KR |
1247 | { |
1248 | register char *name; | |
1249 | register char c; | |
1250 | register char *p; | |
58d4951d | 1251 | offsetT temp; |
6efd877d | 1252 | register symbolS *symbolP; |
18c9057f ILT |
1253 | char *stop = NULL; |
1254 | char stopc; | |
1255 | ||
1256 | if (flag_mri) | |
1257 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1258 | |
1259 | name = input_line_pointer; | |
1260 | c = get_symbol_end (); | |
1261 | /* just after name is now '\0' */ | |
1262 | p = input_line_pointer; | |
1263 | *p = c; | |
1264 | SKIP_WHITESPACE (); | |
1265 | if (*input_line_pointer != ',') | |
1266 | { | |
1267 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
18c9057f ILT |
1268 | if (flag_mri) |
1269 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1270 | ignore_rest_of_line (); |
1271 | return; | |
1272 | } | |
1273 | input_line_pointer++; /* skip ',' */ | |
1274 | if ((temp = get_absolute_expression ()) < 0) | |
1275 | { | |
58d4951d | 1276 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
18c9057f ILT |
1277 | if (flag_mri) |
1278 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1279 | ignore_rest_of_line (); |
1280 | return; | |
1281 | } | |
1282 | *p = 0; | |
1283 | symbolP = symbol_find_or_make (name); | |
1284 | *p = c; | |
1285 | if (S_IS_DEFINED (symbolP)) | |
1286 | { | |
6ef37255 KR |
1287 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1288 | S_GET_NAME (symbolP)); | |
18c9057f ILT |
1289 | if (flag_mri) |
1290 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1291 | ignore_rest_of_line (); |
1292 | return; | |
1293 | } | |
1294 | if (S_GET_VALUE (symbolP)) | |
1295 | { | |
58d4951d ILT |
1296 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
1297 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 1298 | S_GET_NAME (symbolP), |
58d4951d ILT |
1299 | (long) S_GET_VALUE (symbolP), |
1300 | (long) temp); | |
6efd877d KR |
1301 | } |
1302 | else | |
1303 | { | |
58d4951d | 1304 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
1305 | S_SET_EXTERNAL (symbolP); |
1306 | } | |
9471a360 | 1307 | #ifdef OBJ_VMS |
def66e24 DM |
1308 | { |
1309 | extern int flag_one; | |
1310 | if ( (!temp) || !flag_one) | |
1311 | S_GET_OTHER(symbolP) = const_flag; | |
1312 | } | |
9471a360 | 1313 | #endif /* not OBJ_VMS */ |
6efd877d | 1314 | know (symbolP->sy_frag == &zero_address_frag); |
18c9057f ILT |
1315 | |
1316 | if (flag_mri) | |
1317 | mri_comment_end (stop, stopc); | |
1318 | ||
6efd877d KR |
1319 | demand_empty_rest_of_line (); |
1320 | } /* s_comm() */ | |
fecd2382 | 1321 | |
1356d77d ILT |
1322 | /* The MRI COMMON pseudo-op. We handle this by creating a common |
1323 | symbol with the appropriate name. We make s_space do the right | |
1324 | thing by increasing the size. */ | |
1325 | ||
1326 | void | |
1327 | s_mri_common (small) | |
1328 | int small; | |
1329 | { | |
1330 | char *name; | |
1331 | char c; | |
1332 | char *alc = NULL; | |
1333 | symbolS *sym; | |
1334 | offsetT align; | |
18c9057f ILT |
1335 | char *stop = NULL; |
1336 | char stopc; | |
1356d77d ILT |
1337 | |
1338 | if (! flag_mri) | |
1339 | { | |
1340 | s_comm (0); | |
1341 | return; | |
1342 | } | |
1343 | ||
18c9057f ILT |
1344 | stop = mri_comment_field (&stopc); |
1345 | ||
1356d77d ILT |
1346 | SKIP_WHITESPACE (); |
1347 | ||
1348 | name = input_line_pointer; | |
1349 | if (! isdigit ((unsigned char) *name)) | |
1350 | c = get_symbol_end (); | |
1351 | else | |
1352 | { | |
1353 | do | |
1354 | { | |
1355 | ++input_line_pointer; | |
1356 | } | |
1357 | while (isdigit ((unsigned char) *input_line_pointer)); | |
1358 | c = *input_line_pointer; | |
1359 | *input_line_pointer = '\0'; | |
1360 | ||
7e047ac2 | 1361 | if (line_label != NULL) |
1356d77d | 1362 | { |
7e047ac2 | 1363 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) |
1356d77d ILT |
1364 | + (input_line_pointer - name) |
1365 | + 1); | |
7e047ac2 | 1366 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1356d77d ILT |
1367 | name = alc; |
1368 | } | |
1369 | } | |
1370 | ||
1371 | sym = symbol_find_or_make (name); | |
1372 | *input_line_pointer = c; | |
1373 | if (alc != NULL) | |
1374 | free (alc); | |
1375 | ||
1376 | if (*input_line_pointer != ',') | |
1377 | align = 0; | |
1378 | else | |
1379 | { | |
1380 | ++input_line_pointer; | |
1381 | align = get_absolute_expression (); | |
1382 | } | |
1383 | ||
1384 | if (S_IS_DEFINED (sym)) | |
1385 | { | |
1386 | #if defined (S_IS_COMMON) || defined (BFD_ASSEMBLER) | |
1387 | if (! S_IS_COMMON (sym)) | |
1388 | #endif | |
1389 | { | |
1390 | as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym)); | |
18c9057f | 1391 | mri_comment_end (stop, stopc); |
1356d77d ILT |
1392 | ignore_rest_of_line (); |
1393 | return; | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | S_SET_EXTERNAL (sym); | |
1398 | mri_common_symbol = sym; | |
1399 | ||
1400 | #ifdef S_SET_ALIGN | |
1401 | if (align != 0) | |
1402 | S_SET_ALIGN (sym, align); | |
1403 | #endif | |
1404 | ||
7e047ac2 | 1405 | if (line_label != NULL) |
1356d77d | 1406 | { |
7e047ac2 ILT |
1407 | line_label->sy_value.X_op = O_symbol; |
1408 | line_label->sy_value.X_add_symbol = sym; | |
1409 | line_label->sy_value.X_add_number = S_GET_VALUE (sym); | |
1410 | line_label->sy_frag = &zero_address_frag; | |
1411 | S_SET_SEGMENT (line_label, expr_section); | |
1356d77d ILT |
1412 | } |
1413 | ||
1414 | /* FIXME: We just ignore the small argument, which distinguishes | |
1415 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1416 | ||
1417 | /* Ignore the type and hptype. */ | |
1418 | if (*input_line_pointer == ',') | |
1419 | input_line_pointer += 2; | |
1420 | if (*input_line_pointer == ',') | |
1421 | input_line_pointer += 2; | |
18c9057f ILT |
1422 | |
1423 | mri_comment_end (stop, stopc); | |
1424 | ||
1356d77d ILT |
1425 | demand_empty_rest_of_line (); |
1426 | } | |
1427 | ||
fecd2382 | 1428 | void |
604633ae ILT |
1429 | s_data (ignore) |
1430 | int ignore; | |
fecd2382 | 1431 | { |
ffffc8fb | 1432 | segT section; |
6efd877d | 1433 | register int temp; |
f8701a3f | 1434 | |
6efd877d | 1435 | temp = get_absolute_expression (); |
def66e24 | 1436 | if (flag_readonly_data_in_text) |
ffffc8fb ILT |
1437 | { |
1438 | section = text_section; | |
1439 | temp += 1000; | |
1440 | } | |
1441 | else | |
1442 | section = data_section; | |
1443 | ||
ffffc8fb | 1444 | subseg_set (section, (subsegT) temp); |
f8701a3f | 1445 | |
9471a360 | 1446 | #ifdef OBJ_VMS |
6efd877d | 1447 | const_flag = 0; |
fecd2382 | 1448 | #endif |
6efd877d | 1449 | demand_empty_rest_of_line (); |
fecd2382 RP |
1450 | } |
1451 | ||
9a7d824a | 1452 | /* Handle the .appfile pseudo-op. This is automatically generated by |
86038ada ILT |
1453 | do_scrub_chars when a preprocessor # line comment is seen with a |
1454 | file name. This default definition may be overridden by the object | |
1455 | or CPU specific pseudo-ops. This function is also the default | |
1456 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1457 | .file. */ | |
9a7d824a | 1458 | |
6efd877d | 1459 | void |
9a7d824a ILT |
1460 | s_app_file (appfile) |
1461 | int appfile; | |
6efd877d KR |
1462 | { |
1463 | register char *s; | |
1464 | int length; | |
f8701a3f | 1465 | |
6efd877d KR |
1466 | /* Some assemblers tolerate immediately following '"' */ |
1467 | if ((s = demand_copy_string (&length)) != 0) | |
1468 | { | |
9a7d824a ILT |
1469 | /* If this is a fake .appfile, a fake newline was inserted into |
1470 | the buffer. Passing -2 to new_logical_line tells it to | |
1471 | account for it. */ | |
1472 | new_logical_line (s, appfile ? -2 : -1); | |
cef72a92 ILT |
1473 | |
1474 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
1475 | backquote. */ | |
1476 | if (flag_m68k_mri | |
1477 | && *input_line_pointer == '\'' | |
1478 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1479 | ++input_line_pointer; | |
1480 | ||
6efd877d | 1481 | demand_empty_rest_of_line (); |
9a7d824a ILT |
1482 | #ifdef LISTING |
1483 | if (listing) | |
1484 | listing_source_file (s); | |
1485 | #endif | |
6efd877d | 1486 | } |
2209b19c KR |
1487 | #ifdef obj_app_file |
1488 | obj_app_file (s); | |
40324362 KR |
1489 | #endif |
1490 | } | |
fecd2382 | 1491 | |
9a7d824a | 1492 | /* Handle the .appline pseudo-op. This is automatically generated by |
86038ada ILT |
1493 | do_scrub_chars when a preprocessor # line comment is seen. This |
1494 | default definition may be overridden by the object or CPU specific | |
1495 | pseudo-ops. */ | |
9a7d824a ILT |
1496 | |
1497 | void | |
604633ae ILT |
1498 | s_app_line (ignore) |
1499 | int ignore; | |
9a7d824a ILT |
1500 | { |
1501 | int l; | |
1502 | ||
1503 | /* The given number is that of the next line. */ | |
1504 | l = get_absolute_expression () - 1; | |
931a8fab KR |
1505 | if (l < 0) |
1506 | /* Some of the back ends can't deal with non-positive line numbers. | |
1507 | Besides, it's silly. */ | |
1508 | as_warn ("Line numbers must be positive; line number %d rejected.", l+1); | |
1509 | else | |
1510 | { | |
1511 | new_logical_line ((char *) NULL, l); | |
9a7d824a | 1512 | #ifdef LISTING |
931a8fab KR |
1513 | if (listing) |
1514 | listing_source_line (l); | |
9a7d824a | 1515 | #endif |
931a8fab | 1516 | } |
9a7d824a ILT |
1517 | demand_empty_rest_of_line (); |
1518 | } | |
1519 | ||
e28c40d7 ILT |
1520 | /* Handle the .end pseudo-op. Actually, the real work is done in |
1521 | read_a_source_file. */ | |
1522 | ||
1523 | void | |
1524 | s_end (ignore) | |
1525 | int ignore; | |
1526 | { | |
1527 | if (flag_mri) | |
1528 | { | |
1529 | /* The MRI assembler permits the start symbol to follow .end, | |
1530 | but we don't support that. */ | |
1531 | SKIP_WHITESPACE (); | |
18c9057f ILT |
1532 | if (! is_end_of_line[(unsigned char) *input_line_pointer] |
1533 | && *input_line_pointer != '*' | |
1534 | && *input_line_pointer != '!') | |
e28c40d7 ILT |
1535 | as_warn ("start address not supported"); |
1536 | } | |
1537 | } | |
1538 | ||
42ac8fa8 ILT |
1539 | /* Handle the .err pseudo-op. */ |
1540 | ||
1541 | void | |
1542 | s_err (ignore) | |
1543 | int ignore; | |
1544 | { | |
1545 | as_bad (".err encountered"); | |
1546 | demand_empty_rest_of_line (); | |
1547 | } | |
1548 | ||
e28c40d7 ILT |
1549 | /* Handle the MRI fail pseudo-op. */ |
1550 | ||
1551 | void | |
1552 | s_fail (ignore) | |
1553 | int ignore; | |
1554 | { | |
1555 | offsetT temp; | |
18c9057f ILT |
1556 | char *stop = NULL; |
1557 | char stopc; | |
1558 | ||
1559 | if (flag_mri) | |
1560 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
1561 | |
1562 | temp = get_absolute_expression (); | |
1563 | if (temp >= 500) | |
1564 | as_warn (".fail %ld encountered", (long) temp); | |
1565 | else | |
1566 | as_bad (".fail %ld encountered", (long) temp); | |
18c9057f ILT |
1567 | |
1568 | if (flag_mri) | |
1569 | mri_comment_end (stop, stopc); | |
1570 | ||
e28c40d7 ILT |
1571 | demand_empty_rest_of_line (); |
1572 | } | |
1573 | ||
6efd877d | 1574 | void |
604633ae ILT |
1575 | s_fill (ignore) |
1576 | int ignore; | |
6efd877d KR |
1577 | { |
1578 | long temp_repeat = 0; | |
1579 | long temp_size = 1; | |
1580 | register long temp_fill = 0; | |
1581 | char *p; | |
f8701a3f | 1582 | |
624c91d1 KR |
1583 | #ifdef md_flush_pending_output |
1584 | md_flush_pending_output (); | |
1585 | #endif | |
7c2d4011 | 1586 | |
6efd877d KR |
1587 | temp_repeat = get_absolute_expression (); |
1588 | if (*input_line_pointer == ',') | |
1589 | { | |
1590 | input_line_pointer++; | |
1591 | temp_size = get_absolute_expression (); | |
1592 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
1593 | { |
1594 | input_line_pointer++; | |
6efd877d | 1595 | temp_fill = get_absolute_expression (); |
fecd2382 | 1596 | } |
6efd877d | 1597 | } |
c8863a58 | 1598 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 1599 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
1600 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
1601 | { | |
1602 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
1603 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
1604 | } | |
1605 | if (temp_size < 0) | |
1606 | { | |
1607 | as_warn ("Size negative: .fill ignored."); | |
1608 | temp_size = 0; | |
1609 | } | |
1610 | else if (temp_repeat <= 0) | |
1611 | { | |
a69e5977 ILT |
1612 | if (temp_repeat < 0) |
1613 | as_warn ("Repeat < 0, .fill ignored"); | |
6efd877d KR |
1614 | temp_size = 0; |
1615 | } | |
7fd3560a | 1616 | |
6efd877d KR |
1617 | if (temp_size && !need_pass_2) |
1618 | { | |
1619 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
604633ae | 1620 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
1621 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
1622 | * flavoured AS. The following bizzare behaviour is to be | |
1623 | * compatible with above. I guess they tried to take up to 8 | |
1624 | * bytes from a 4-byte expression and they forgot to sign | |
1625 | * extend. Un*x Sux. */ | |
fecd2382 | 1626 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 1627 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
1628 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
1629 | ? BSD_FILL_SIZE_CROCK_4 | |
1630 | : (int) temp_size)); | |
1631 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
1632 | * but emits no error message because it seems a legal thing to do. | |
1633 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1634 | */ | |
6efd877d | 1635 | } |
6efd877d | 1636 | demand_empty_rest_of_line (); |
f8701a3f SC |
1637 | } |
1638 | ||
6efd877d | 1639 | void |
604633ae ILT |
1640 | s_globl (ignore) |
1641 | int ignore; | |
6efd877d | 1642 | { |
40324362 KR |
1643 | char *name; |
1644 | int c; | |
1645 | symbolS *symbolP; | |
18c9057f ILT |
1646 | char *stop = NULL; |
1647 | char stopc; | |
1648 | ||
1649 | if (flag_mri) | |
1650 | stop = mri_comment_field (&stopc); | |
fecd2382 | 1651 | |
6efd877d KR |
1652 | do |
1653 | { | |
1654 | name = input_line_pointer; | |
1655 | c = get_symbol_end (); | |
1656 | symbolP = symbol_find_or_make (name); | |
1657 | *input_line_pointer = c; | |
1658 | SKIP_WHITESPACE (); | |
1659 | S_SET_EXTERNAL (symbolP); | |
1660 | if (c == ',') | |
1661 | { | |
1662 | input_line_pointer++; | |
1663 | SKIP_WHITESPACE (); | |
1664 | if (*input_line_pointer == '\n') | |
1665 | c = '\n'; | |
1666 | } | |
1667 | } | |
1668 | while (c == ','); | |
18c9057f ILT |
1669 | |
1670 | if (flag_mri) | |
1671 | mri_comment_end (stop, stopc); | |
1672 | ||
6efd877d | 1673 | demand_empty_rest_of_line (); |
40324362 | 1674 | } |
6efd877d | 1675 | |
7e047ac2 ILT |
1676 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
1677 | ||
1678 | void | |
1679 | s_irp (irpc) | |
1680 | int irpc; | |
1681 | { | |
1682 | char *file; | |
1683 | unsigned int line; | |
1684 | sb s; | |
1685 | const char *err; | |
1686 | sb out; | |
1687 | ||
1688 | as_where (&file, &line); | |
1689 | ||
1690 | sb_new (&s); | |
1691 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1692 | sb_add_char (&s, *input_line_pointer++); | |
1693 | ||
1694 | sb_new (&out); | |
1695 | ||
1696 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1697 | if (err != NULL) | |
1698 | as_bad_where (file, line, "%s", err); | |
1699 | ||
1700 | sb_kill (&s); | |
1701 | ||
1702 | input_scrub_include_sb (&out, input_line_pointer); | |
1703 | sb_kill (&out); | |
1704 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1705 | } | |
1706 | ||
7d3741ed ILT |
1707 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark |
1708 | the section to only be linked once. However, this is not supported | |
1709 | by most object file formats. This takes an optional argument, | |
1710 | which is what to do about duplicates. */ | |
1711 | ||
1712 | void | |
1713 | s_linkonce (ignore) | |
1714 | int ignore; | |
1715 | { | |
1716 | enum linkonce_type type; | |
1717 | ||
1718 | SKIP_WHITESPACE (); | |
1719 | ||
1720 | type = LINKONCE_DISCARD; | |
1721 | ||
1722 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1723 | { | |
1724 | char *s; | |
1725 | char c; | |
1726 | ||
1727 | s = input_line_pointer; | |
1728 | c = get_symbol_end (); | |
1729 | if (strcasecmp (s, "discard") == 0) | |
1730 | type = LINKONCE_DISCARD; | |
1731 | else if (strcasecmp (s, "one_only") == 0) | |
1732 | type = LINKONCE_ONE_ONLY; | |
1733 | else if (strcasecmp (s, "same_size") == 0) | |
1734 | type = LINKONCE_SAME_SIZE; | |
1735 | else if (strcasecmp (s, "same_contents") == 0) | |
1736 | type = LINKONCE_SAME_CONTENTS; | |
1737 | else | |
1738 | as_warn ("unrecognized .linkonce type `%s'", s); | |
1739 | ||
1740 | *input_line_pointer = c; | |
1741 | } | |
1742 | ||
1743 | #ifdef obj_handle_link_once | |
1744 | obj_handle_link_once (type); | |
1745 | #else /* ! defined (obj_handle_link_once) */ | |
1746 | #ifdef BFD_ASSEMBLER | |
1747 | { | |
1748 | flagword flags; | |
1749 | ||
1750 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1751 | as_warn (".linkonce is not supported for this object file format"); | |
1752 | ||
1753 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1754 | flags |= SEC_LINK_ONCE; | |
1755 | switch (type) | |
1756 | { | |
1757 | default: | |
1758 | abort (); | |
1759 | case LINKONCE_DISCARD: | |
1760 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1761 | break; | |
1762 | case LINKONCE_ONE_ONLY: | |
1763 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1764 | break; | |
1765 | case LINKONCE_SAME_SIZE: | |
1766 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
1767 | break; | |
1768 | case LINKONCE_SAME_CONTENTS: | |
1769 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
1770 | break; | |
1771 | } | |
1772 | if (! bfd_set_section_flags (stdoutput, now_seg, flags)) | |
1773 | as_bad ("bfd_set_section_flags: %s", | |
1774 | bfd_errmsg (bfd_get_error ())); | |
1775 | } | |
1776 | #else /* ! defined (BFD_ASSEMBLER) */ | |
1777 | as_warn (".linkonce is not supported for this object file format"); | |
1778 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
1779 | #endif /* ! defined (obj_handle_link_once) */ | |
1780 | ||
1781 | demand_empty_rest_of_line (); | |
1782 | } | |
1783 | ||
6efd877d KR |
1784 | void |
1785 | s_lcomm (needs_align) | |
c8863a58 KR |
1786 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1787 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1788 | int needs_align; | |
fecd2382 | 1789 | { |
6efd877d KR |
1790 | register char *name; |
1791 | register char c; | |
1792 | register char *p; | |
1793 | register int temp; | |
1794 | register symbolS *symbolP; | |
9a7d824a ILT |
1795 | segT current_seg = now_seg; |
1796 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1797 | const int max_alignment = 15; |
1798 | int align = 0; | |
9a7d824a | 1799 | segT bss_seg = bss_section; |
6efd877d KR |
1800 | |
1801 | name = input_line_pointer; | |
1802 | c = get_symbol_end (); | |
1803 | p = input_line_pointer; | |
1804 | *p = c; | |
1805 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1806 | |
1807 | /* Accept an optional comma after the name. The comma used to be | |
1808 | required, but Irix 5 cc does not generate it. */ | |
1809 | if (*input_line_pointer == ',') | |
6efd877d | 1810 | { |
46b81190 ILT |
1811 | ++input_line_pointer; |
1812 | SKIP_WHITESPACE (); | |
6efd877d | 1813 | } |
f8701a3f | 1814 | |
6efd877d KR |
1815 | if (*input_line_pointer == '\n') |
1816 | { | |
1817 | as_bad ("Missing size expression"); | |
1818 | return; | |
1819 | } | |
f8701a3f | 1820 | |
6efd877d KR |
1821 | if ((temp = get_absolute_expression ()) < 0) |
1822 | { | |
1823 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1824 | ignore_rest_of_line (); | |
1825 | return; | |
1826 | } | |
f8701a3f | 1827 | |
2ef7731d | 1828 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
a2a5a4fa KR |
1829 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
1830 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
46b81190 | 1831 | { |
a2a5a4fa KR |
1832 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ |
1833 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1834 | { | |
1835 | bss_seg = subseg_new (".sbss", 1); | |
1836 | seg_info (bss_seg)->bss = 1; | |
b95bee13 ILT |
1837 | #ifdef BFD_ASSEMBLER |
1838 | if (! bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) | |
1839 | as_warn ("error setting flags for \".sbss\": %s", | |
1840 | bfd_errmsg (bfd_get_error ())); | |
1841 | #endif | |
a2a5a4fa | 1842 | } |
46b81190 | 1843 | } |
9a7d824a | 1844 | #endif |
ede7bc1c SC |
1845 | if (!needs_align) |
1846 | { | |
1847 | /* FIXME. This needs to be machine independent. */ | |
9d90491e ILT |
1848 | if (temp >= 8) |
1849 | align = 3; | |
1850 | else if (temp >= 4) | |
ede7bc1c SC |
1851 | align = 2; |
1852 | else if (temp >= 2) | |
1853 | align = 1; | |
1854 | else | |
c71a604a | 1855 | align = 0; |
ede7bc1c | 1856 | |
a69e5977 ILT |
1857 | #ifdef OBJ_EVAX |
1858 | /* FIXME: This needs to be done in a more general fashion. */ | |
1859 | align = 3; | |
1860 | #endif | |
1861 | ||
ede7bc1c SC |
1862 | record_alignment(bss_seg, align); |
1863 | } | |
9a7d824a | 1864 | |
6efd877d KR |
1865 | if (needs_align) |
1866 | { | |
1867 | align = 0; | |
1868 | SKIP_WHITESPACE (); | |
1869 | if (*input_line_pointer != ',') | |
1870 | { | |
1871 | as_bad ("Expected comma after size"); | |
1872 | ignore_rest_of_line (); | |
1873 | return; | |
1874 | } | |
1875 | input_line_pointer++; | |
1876 | SKIP_WHITESPACE (); | |
1877 | if (*input_line_pointer == '\n') | |
1878 | { | |
1879 | as_bad ("Missing alignment"); | |
1880 | return; | |
1881 | } | |
1882 | align = get_absolute_expression (); | |
1883 | if (align > max_alignment) | |
1884 | { | |
1885 | align = max_alignment; | |
1886 | as_warn ("Alignment too large: %d. assumed.", align); | |
1887 | } | |
1888 | else if (align < 0) | |
1889 | { | |
1890 | align = 0; | |
1891 | as_warn ("Alignment negative. 0 assumed."); | |
1892 | } | |
9a7d824a | 1893 | record_alignment (bss_seg, align); |
6efd877d | 1894 | } /* if needs align */ |
4075afe1 KR |
1895 | else |
1896 | { | |
1897 | /* Assume some objects may require alignment on some systems. */ | |
a69e5977 | 1898 | #if defined (TC_ALPHA) && ! defined (VMS) |
4075afe1 KR |
1899 | if (temp > 1) |
1900 | { | |
1901 | align = ffs (temp) - 1; | |
1902 | if (temp % (1 << align)) | |
1903 | abort (); | |
1904 | } | |
1905 | #endif | |
1906 | } | |
f8701a3f | 1907 | |
6efd877d KR |
1908 | *p = 0; |
1909 | symbolP = symbol_find_or_make (name); | |
1910 | *p = c; | |
f8701a3f | 1911 | |
6efd877d | 1912 | if ( |
fecd2382 | 1913 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1914 | S_GET_OTHER (symbolP) == 0 && |
1915 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1916 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 1917 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
1918 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
1919 | { | |
604633ae | 1920 | char *pfrag; |
85825401 | 1921 | |
9a7d824a | 1922 | subseg_set (bss_seg, 1); |
85825401 ILT |
1923 | |
1924 | if (align) | |
1925 | frag_align (align, 0); | |
1926 | /* detach from old frag */ | |
9a7d824a | 1927 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
1928 | symbolP->sy_frag->fr_symbol = NULL; |
1929 | ||
1930 | symbolP->sy_frag = frag_now; | |
604633ae ILT |
1931 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
1932 | temp, (char *)0); | |
1933 | *pfrag = 0; | |
f8701a3f | 1934 | |
9a7d824a | 1935 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 1936 | |
fecd2382 | 1937 | #ifdef OBJ_COFF |
6efd877d | 1938 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
1939 | ".globl" directive -- be careful not to step on storage class |
1940 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
1941 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1942 | { | |
1943 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1944 | } |
6efd877d | 1945 | #endif /* OBJ_COFF */ |
cef72a92 ILT |
1946 | |
1947 | #ifdef S_SET_SIZE | |
1948 | S_SET_SIZE (symbolP, temp); | |
1949 | #endif | |
6efd877d KR |
1950 | } |
1951 | else | |
6ef37255 KR |
1952 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1953 | S_GET_NAME (symbolP)); | |
f8701a3f | 1954 | |
9a7d824a | 1955 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
1956 | |
1957 | demand_empty_rest_of_line (); | |
6efd877d | 1958 | } /* s_lcomm() */ |
fecd2382 | 1959 | |
6efd877d | 1960 | void |
604633ae ILT |
1961 | s_lsym (ignore) |
1962 | int ignore; | |
6efd877d KR |
1963 | { |
1964 | register char *name; | |
1965 | register char c; | |
1966 | register char *p; | |
6efd877d KR |
1967 | expressionS exp; |
1968 | register symbolS *symbolP; | |
1969 | ||
1970 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1971 | name = input_line_pointer; | |
1972 | c = get_symbol_end (); | |
1973 | p = input_line_pointer; | |
1974 | *p = c; | |
1975 | SKIP_WHITESPACE (); | |
1976 | if (*input_line_pointer != ',') | |
1977 | { | |
1978 | *p = 0; | |
1979 | as_bad ("Expected comma after name \"%s\"", name); | |
1980 | *p = c; | |
1981 | ignore_rest_of_line (); | |
1982 | return; | |
1983 | } | |
1984 | input_line_pointer++; | |
b31f2abb KR |
1985 | expression (&exp); |
1986 | if (exp.X_op != O_constant | |
1987 | && exp.X_op != O_register) | |
1988 | { | |
1989 | as_bad ("bad expression"); | |
1990 | ignore_rest_of_line (); | |
1991 | return; | |
1992 | } | |
6efd877d KR |
1993 | *p = 0; |
1994 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1995 | |
c8863a58 KR |
1996 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
1997 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
1998 | those fields, and I can't see when they'd ever be tripped. I | |
1999 | don't think I understand why they were here so I may have | |
2000 | introduced a bug. As recently as 1.37 didn't have this test | |
2001 | anyway. xoxorich. */ | |
f8701a3f | 2002 | |
9471a360 | 2003 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
2004 | && S_GET_VALUE (symbolP) == 0) |
2005 | { | |
c8863a58 KR |
2006 | /* The name might be an undefined .global symbol; be sure to |
2007 | keep the "external" bit. */ | |
b31f2abb KR |
2008 | S_SET_SEGMENT (symbolP, |
2009 | (exp.X_op == O_constant | |
2010 | ? absolute_section | |
2011 | : reg_section)); | |
2012 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
2013 | } |
2014 | else | |
2015 | { | |
2016 | as_bad ("Symbol %s already defined", name); | |
2017 | } | |
2018 | *p = c; | |
2019 | demand_empty_rest_of_line (); | |
2020 | } /* s_lsym() */ | |
2021 | ||
7e047ac2 ILT |
2022 | /* Read a line into an sb. */ |
2023 | ||
2024 | static int | |
2025 | get_line_sb (line) | |
2026 | sb *line; | |
2027 | { | |
adeab39b MM |
2028 | if (input_line_pointer[-1] == '\n') |
2029 | bump_line_counters (); | |
2030 | ||
7e047ac2 ILT |
2031 | if (input_line_pointer >= buffer_limit) |
2032 | { | |
2033 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2034 | if (buffer_limit == 0) | |
2035 | return 0; | |
2036 | } | |
2037 | ||
2038 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2039 | sb_add_char (line, *input_line_pointer++); | |
42ac8fa8 ILT |
2040 | while (input_line_pointer < buffer_limit |
2041 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
7e047ac2 | 2042 | { |
adeab39b MM |
2043 | if (input_line_pointer[-1] == '\n') |
2044 | bump_line_counters (); | |
7e047ac2 ILT |
2045 | ++input_line_pointer; |
2046 | } | |
2047 | return 1; | |
2048 | } | |
2049 | ||
2050 | /* Define a macro. This is an interface to macro.c, which is shared | |
2051 | between gas and gasp. */ | |
2052 | ||
2053 | void | |
2054 | s_macro (ignore) | |
2055 | int ignore; | |
2056 | { | |
2057 | char *file; | |
2058 | unsigned int line; | |
2059 | sb s; | |
2060 | sb label; | |
2061 | const char *err; | |
a69e5977 | 2062 | const char *name; |
7e047ac2 ILT |
2063 | |
2064 | as_where (&file, &line); | |
2065 | ||
2066 | sb_new (&s); | |
2067 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2068 | sb_add_char (&s, *input_line_pointer++); | |
2069 | ||
2070 | sb_new (&label); | |
2071 | if (line_label != NULL) | |
2072 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2073 | ||
a69e5977 | 2074 | err = define_macro (0, &s, &label, get_line_sb, &name); |
7e047ac2 ILT |
2075 | if (err != NULL) |
2076 | as_bad_where (file, line, "%s", err); | |
2077 | else | |
2078 | { | |
2079 | if (line_label != NULL) | |
2080 | { | |
2081 | S_SET_SEGMENT (line_label, undefined_section); | |
2082 | S_SET_VALUE (line_label, 0); | |
2083 | line_label->sy_frag = &zero_address_frag; | |
2084 | } | |
a69e5977 ILT |
2085 | |
2086 | if (((flag_m68k_mri | |
2087 | #ifdef NO_PSEUDO_DOT | |
2088 | || 1 | |
2089 | #endif | |
2090 | ) | |
2091 | && hash_find (po_hash, name) != NULL) | |
2092 | || (! flag_m68k_mri | |
2093 | && *name == '.' | |
2094 | && hash_find (po_hash, name + 1) != NULL)) | |
2095 | as_warn ("attempt to redefine pseudo-op `%s' ignored", | |
2096 | name); | |
7e047ac2 ILT |
2097 | } |
2098 | ||
2099 | sb_kill (&s); | |
2100 | } | |
2101 | ||
2102 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2103 | expansion. */ | |
2104 | ||
2105 | void | |
2106 | s_mexit (ignore) | |
2107 | int ignore; | |
2108 | { | |
2109 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2110 | } | |
2111 | ||
20710f1c ILT |
2112 | /* Switch in and out of MRI mode. */ |
2113 | ||
2114 | void | |
2115 | s_mri (ignore) | |
2116 | int ignore; | |
2117 | { | |
2118 | int on, old_flag; | |
2119 | ||
2120 | on = get_absolute_expression (); | |
2121 | old_flag = flag_mri; | |
2122 | if (on != 0) | |
2123 | { | |
2124 | flag_mri = 1; | |
2125 | #ifdef TC_M68K | |
2126 | flag_m68k_mri = 1; | |
2127 | #endif | |
2128 | } | |
2129 | else | |
2130 | { | |
2131 | flag_mri = 0; | |
2132 | flag_m68k_mri = 0; | |
2133 | } | |
2134 | ||
2135 | #ifdef MRI_MODE_CHANGE | |
2136 | if (on != old_flag) | |
2137 | MRI_MODE_CHANGE (on); | |
2138 | #endif | |
2139 | ||
2140 | demand_empty_rest_of_line (); | |
2141 | } | |
2142 | ||
e28c40d7 ILT |
2143 | /* Handle changing the location counter. */ |
2144 | ||
2145 | static void | |
2146 | do_org (segment, exp, fill) | |
2147 | segT segment; | |
2148 | expressionS *exp; | |
2149 | int fill; | |
2150 | { | |
2151 | if (segment != now_seg && segment != absolute_section) | |
2152 | as_bad ("invalid segment \"%s\"; segment \"%s\" assumed", | |
2153 | segment_name (segment), segment_name (now_seg)); | |
2154 | ||
2155 | if (now_seg == absolute_section) | |
2156 | { | |
2157 | if (fill != 0) | |
2158 | as_warn ("ignoring fill value in absolute section"); | |
2159 | if (exp->X_op != O_constant) | |
2160 | { | |
2161 | as_bad ("only constant offsets supported in absolute section"); | |
2162 | exp->X_add_number = 0; | |
2163 | } | |
2164 | abs_section_offset = exp->X_add_number; | |
2165 | } | |
2166 | else | |
2167 | { | |
2168 | char *p; | |
2169 | ||
2170 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
2171 | exp->X_add_number, (char *) NULL); | |
2172 | *p = fill; | |
2173 | } | |
2174 | } | |
2175 | ||
6efd877d | 2176 | void |
604633ae ILT |
2177 | s_org (ignore) |
2178 | int ignore; | |
6efd877d KR |
2179 | { |
2180 | register segT segment; | |
2181 | expressionS exp; | |
2182 | register long temp_fill; | |
e28c40d7 | 2183 | |
42ac8fa8 ILT |
2184 | /* The m68k MRI assembler has a different meaning for .org. It |
2185 | means to create an absolute section at a given address. We can't | |
2186 | support that--use a linker script instead. */ | |
cef72a92 | 2187 | if (flag_m68k_mri) |
69e077f3 ILT |
2188 | { |
2189 | as_bad ("MRI style ORG pseudo-op not supported"); | |
2190 | ignore_rest_of_line (); | |
2191 | return; | |
2192 | } | |
2193 | ||
9471a360 KR |
2194 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
2195 | thing as a sub-segment-relative origin. Any absolute origin is | |
2196 | given a warning, then assumed to be segment-relative. Any | |
2197 | segmented origin expression ("foo+42") had better be in the right | |
2198 | segment or the .org is ignored. | |
2199 | ||
2200 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2201 | we never know sub-segment sizes when we are reading code. BSD | |
2202 | will crash trying to emit negative numbers of filler bytes in | |
2203 | certain .orgs. We don't crash, but see as-write for that code. | |
2204 | ||
2205 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
2206 | segment = get_known_segmented_expression (&exp); |
2207 | if (*input_line_pointer == ',') | |
2208 | { | |
2209 | input_line_pointer++; | |
2210 | temp_fill = get_absolute_expression (); | |
2211 | } | |
2212 | else | |
2213 | temp_fill = 0; | |
e28c40d7 | 2214 | |
6efd877d | 2215 | if (!need_pass_2) |
e28c40d7 ILT |
2216 | do_org (segment, &exp, temp_fill); |
2217 | ||
6efd877d KR |
2218 | demand_empty_rest_of_line (); |
2219 | } /* s_org() */ | |
2220 | ||
e14994d9 ILT |
2221 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be |
2222 | called by the obj-format routine which handles section changing | |
2223 | when in MRI mode. It will create a new section, and return it. It | |
c7a89bde ILT |
2224 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), |
2225 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2226 | flags will be set in the section. */ | |
e14994d9 ILT |
2227 | |
2228 | void | |
2229 | s_mri_sect (type) | |
2230 | char *type; | |
2231 | { | |
42ac8fa8 ILT |
2232 | #ifdef TC_M68K |
2233 | ||
e14994d9 ILT |
2234 | char *name; |
2235 | char c; | |
2236 | segT seg; | |
2237 | ||
2238 | SKIP_WHITESPACE (); | |
2239 | ||
2240 | name = input_line_pointer; | |
2241 | if (! isdigit ((unsigned char) *name)) | |
2242 | c = get_symbol_end (); | |
2243 | else | |
2244 | { | |
2245 | do | |
2246 | { | |
2247 | ++input_line_pointer; | |
2248 | } | |
2249 | while (isdigit ((unsigned char) *input_line_pointer)); | |
2250 | c = *input_line_pointer; | |
2251 | *input_line_pointer = '\0'; | |
2252 | } | |
2253 | ||
c7a89bde | 2254 | name = xstrdup (name); |
e14994d9 ILT |
2255 | |
2256 | *input_line_pointer = c; | |
2257 | ||
2258 | seg = subseg_new (name, 0); | |
2259 | ||
2260 | if (*input_line_pointer == ',') | |
2261 | { | |
2262 | int align; | |
2263 | ||
2264 | ++input_line_pointer; | |
2265 | align = get_absolute_expression (); | |
2266 | record_alignment (seg, align); | |
2267 | } | |
2268 | ||
c7a89bde | 2269 | *type = 'C'; |
e14994d9 ILT |
2270 | if (*input_line_pointer == ',') |
2271 | { | |
2272 | c = *++input_line_pointer; | |
2273 | c = toupper ((unsigned char) c); | |
2274 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | |
2275 | *type = c; | |
2276 | else | |
2277 | as_bad ("unrecognized section type"); | |
2278 | ++input_line_pointer; | |
2279 | ||
2280 | #ifdef BFD_ASSEMBLER | |
2281 | { | |
2282 | flagword flags; | |
2283 | ||
2284 | flags = SEC_NO_FLAGS; | |
ca232972 | 2285 | if (*type == 'C') |
c7a89bde ILT |
2286 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; |
2287 | else if (*type == 'D' || *type == 'M') | |
2288 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
ca232972 | 2289 | else if (*type == 'R') |
c7a89bde | 2290 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; |
e14994d9 ILT |
2291 | if (flags != SEC_NO_FLAGS) |
2292 | { | |
2293 | if (! bfd_set_section_flags (stdoutput, seg, flags)) | |
2294 | as_warn ("error setting flags for \"%s\": %s", | |
ca232972 | 2295 | bfd_section_name (stdoutput, seg), |
e14994d9 ILT |
2296 | bfd_errmsg (bfd_get_error ())); |
2297 | } | |
2298 | } | |
2299 | #endif | |
2300 | } | |
2301 | ||
2302 | /* Ignore the HP type. */ | |
2303 | if (*input_line_pointer == ',') | |
2304 | input_line_pointer += 2; | |
2305 | ||
2306 | demand_empty_rest_of_line (); | |
42ac8fa8 ILT |
2307 | |
2308 | #else /* ! TC_M68K */ | |
2309 | #ifdef TC_I960 | |
2310 | ||
2311 | char *name; | |
2312 | char c; | |
2313 | segT seg; | |
2314 | ||
2315 | SKIP_WHITESPACE (); | |
2316 | ||
2317 | name = input_line_pointer; | |
2318 | c = get_symbol_end (); | |
2319 | ||
c7a89bde | 2320 | name = xstrdup (name); |
42ac8fa8 ILT |
2321 | |
2322 | *input_line_pointer = c; | |
2323 | ||
2324 | seg = subseg_new (name, 0); | |
2325 | ||
2326 | if (*input_line_pointer != ',') | |
2327 | *type = 'C'; | |
2328 | else | |
2329 | { | |
2330 | char *sectype; | |
2331 | ||
2332 | ++input_line_pointer; | |
2333 | SKIP_WHITESPACE (); | |
2334 | sectype = input_line_pointer; | |
2335 | c = get_symbol_end (); | |
2336 | if (*sectype == '\0') | |
2337 | *type = 'C'; | |
2338 | else if (strcasecmp (sectype, "text") == 0) | |
2339 | *type = 'C'; | |
2340 | else if (strcasecmp (sectype, "data") == 0) | |
2341 | *type = 'D'; | |
2342 | else if (strcasecmp (sectype, "romdata") == 0) | |
2343 | *type = 'R'; | |
2344 | else | |
2345 | as_warn ("unrecognized section type `%s'", sectype); | |
2346 | *input_line_pointer = c; | |
2347 | } | |
2348 | ||
2349 | if (*input_line_pointer == ',') | |
2350 | { | |
2351 | char *seccmd; | |
2352 | ||
2353 | ++input_line_pointer; | |
2354 | SKIP_WHITESPACE (); | |
2355 | seccmd = input_line_pointer; | |
2356 | c = get_symbol_end (); | |
2357 | if (strcasecmp (seccmd, "absolute") == 0) | |
2358 | { | |
2359 | as_bad ("absolute sections are not supported"); | |
2360 | *input_line_pointer = c; | |
2361 | ignore_rest_of_line (); | |
2362 | return; | |
2363 | } | |
2364 | else if (strcasecmp (seccmd, "align") == 0) | |
2365 | { | |
2366 | int align; | |
2367 | ||
2368 | *input_line_pointer = c; | |
2369 | align = get_absolute_expression (); | |
2370 | record_alignment (seg, align); | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | as_warn ("unrecognized section command `%s'", seccmd); | |
2375 | *input_line_pointer = c; | |
2376 | } | |
2377 | } | |
2378 | ||
2379 | demand_empty_rest_of_line (); | |
2380 | ||
2381 | #else /* ! TC_I960 */ | |
2382 | /* The MRI assembler seems to use different forms of .sect for | |
2383 | different targets. */ | |
2384 | abort (); | |
2385 | #endif /* ! TC_I960 */ | |
2386 | #endif /* ! TC_M68K */ | |
2387 | } | |
2388 | ||
2389 | /* Handle the .print pseudo-op. */ | |
2390 | ||
2391 | void | |
2392 | s_print (ignore) | |
2393 | int ignore; | |
2394 | { | |
2395 | char *s; | |
2396 | int len; | |
2397 | ||
2398 | s = demand_copy_C_string (&len); | |
2399 | printf ("%s\n", s); | |
2400 | demand_empty_rest_of_line (); | |
2401 | } | |
2402 | ||
2403 | /* Handle the .purgem pseudo-op. */ | |
2404 | ||
2405 | void | |
2406 | s_purgem (ignore) | |
2407 | int ignore; | |
2408 | { | |
2409 | if (is_it_end_of_statement ()) | |
2410 | { | |
2411 | demand_empty_rest_of_line (); | |
2412 | return; | |
2413 | } | |
2414 | ||
2415 | do | |
2416 | { | |
2417 | char *name; | |
2418 | char c; | |
2419 | ||
2420 | SKIP_WHITESPACE (); | |
2421 | name = input_line_pointer; | |
2422 | c = get_symbol_end (); | |
2423 | delete_macro (name); | |
2424 | *input_line_pointer = c; | |
2425 | SKIP_WHITESPACE (); | |
2426 | } | |
2427 | while (*input_line_pointer++ == ','); | |
2428 | ||
2429 | --input_line_pointer; | |
2430 | demand_empty_rest_of_line (); | |
e14994d9 ILT |
2431 | } |
2432 | ||
7e047ac2 ILT |
2433 | /* Handle the .rept pseudo-op. */ |
2434 | ||
2435 | void | |
2436 | s_rept (ignore) | |
2437 | int ignore; | |
2438 | { | |
2439 | int count; | |
2440 | sb one; | |
2441 | sb many; | |
2442 | ||
2443 | count = get_absolute_expression (); | |
2444 | ||
2445 | sb_new (&one); | |
2446 | if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb)) | |
2447 | { | |
2448 | as_bad ("rept without endr"); | |
2449 | return; | |
2450 | } | |
2451 | ||
2452 | sb_new (&many); | |
2453 | while (count-- > 0) | |
2454 | sb_add_sb (&many, &one); | |
2455 | ||
2456 | sb_kill (&one); | |
2457 | ||
2458 | input_scrub_include_sb (&many, input_line_pointer); | |
2459 | sb_kill (&many); | |
2460 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2461 | } | |
2462 | ||
6efd877d | 2463 | void |
604633ae ILT |
2464 | s_set (ignore) |
2465 | int ignore; | |
6efd877d KR |
2466 | { |
2467 | register char *name; | |
2468 | register char delim; | |
2469 | register char *end_name; | |
2470 | register symbolS *symbolP; | |
2471 | ||
2472 | /* | |
c8863a58 KR |
2473 | * Especial apologies for the random logic: |
2474 | * this just grew, and could be parsed much more simply! | |
2475 | * Dean in haste. | |
2476 | */ | |
6efd877d KR |
2477 | name = input_line_pointer; |
2478 | delim = get_symbol_end (); | |
2479 | end_name = input_line_pointer; | |
2480 | *end_name = delim; | |
2481 | SKIP_WHITESPACE (); | |
f8701a3f | 2482 | |
6efd877d KR |
2483 | if (*input_line_pointer != ',') |
2484 | { | |
2485 | *end_name = 0; | |
2486 | as_bad ("Expected comma after name \"%s\"", name); | |
2487 | *end_name = delim; | |
2488 | ignore_rest_of_line (); | |
2489 | return; | |
2490 | } | |
2491 | ||
2492 | input_line_pointer++; | |
2493 | *end_name = 0; | |
2494 | ||
2495 | if (name[0] == '.' && name[1] == '\0') | |
2496 | { | |
2497 | /* Turn '. = mumble' into a .org mumble */ | |
2498 | register segT segment; | |
2499 | expressionS exp; | |
6efd877d KR |
2500 | |
2501 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 2502 | |
6efd877d | 2503 | if (!need_pass_2) |
e28c40d7 | 2504 | do_org (segment, &exp, 0); |
6efd877d KR |
2505 | |
2506 | *end_name = delim; | |
2507 | return; | |
2508 | } | |
2509 | ||
2510 | if ((symbolP = symbol_find (name)) == NULL | |
2511 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2512 | { | |
9471a360 | 2513 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 2514 | #ifdef OBJ_COFF |
6efd877d KR |
2515 | /* "set" symbols are local unless otherwise specified. */ |
2516 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 2517 | #endif /* OBJ_COFF */ |
f8701a3f | 2518 | |
6efd877d | 2519 | } /* make a new symbol */ |
f8701a3f | 2520 | |
6efd877d | 2521 | symbol_table_insert (symbolP); |
f8701a3f | 2522 | |
6efd877d KR |
2523 | *end_name = delim; |
2524 | pseudo_set (symbolP); | |
2525 | demand_empty_rest_of_line (); | |
2526 | } /* s_set() */ | |
fecd2382 | 2527 | |
6efd877d KR |
2528 | void |
2529 | s_space (mult) | |
2530 | int mult; | |
b53ccaac | 2531 | { |
cd3b81bd | 2532 | expressionS exp; |
adeab39b | 2533 | expressionS val; |
cd3b81bd | 2534 | char *p = 0; |
3dce804d ILT |
2535 | char *stop = NULL; |
2536 | char stopc; | |
6efd877d | 2537 | |
a2a5a4fa KR |
2538 | #ifdef md_flush_pending_output |
2539 | md_flush_pending_output (); | |
2540 | #endif | |
2541 | ||
3dce804d | 2542 | if (flag_mri) |
18c9057f | 2543 | stop = mri_comment_field (&stopc); |
3dce804d | 2544 | |
a69e5977 ILT |
2545 | /* In m68k MRI mode, we need to align to a word boundary, unless |
2546 | this is ds.b. */ | |
2547 | if (flag_m68k_mri && mult > 1) | |
2548 | { | |
2549 | if (now_seg == absolute_section) | |
2550 | { | |
2551 | abs_section_offset += abs_section_offset & 1; | |
2552 | if (line_label != NULL) | |
2553 | S_SET_VALUE (line_label, abs_section_offset); | |
2554 | } | |
2555 | else if (mri_common_symbol != NULL) | |
2556 | { | |
2557 | valueT val; | |
2558 | ||
2559 | val = S_GET_VALUE (mri_common_symbol); | |
2560 | if ((val & 1) != 0) | |
2561 | { | |
2562 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2563 | if (line_label != NULL) | |
2564 | { | |
2565 | know (line_label->sy_value.X_op == O_symbol); | |
2566 | know (line_label->sy_value.X_add_symbol == mri_common_symbol); | |
2567 | line_label->sy_value.X_add_number += 1; | |
2568 | } | |
2569 | } | |
2570 | } | |
2571 | else | |
2572 | { | |
2573 | do_align (1, (char *) NULL, 0); | |
2574 | if (line_label != NULL) | |
2575 | { | |
2576 | line_label->sy_frag = frag_now; | |
2577 | S_SET_VALUE (line_label, frag_now_fix ()); | |
2578 | } | |
2579 | } | |
2580 | } | |
2581 | ||
cd3b81bd | 2582 | expression (&exp); |
cd3b81bd | 2583 | |
adeab39b MM |
2584 | SKIP_WHITESPACE (); |
2585 | if (*input_line_pointer == ',') | |
2586 | { | |
2587 | ++input_line_pointer; | |
2588 | expression (&val); | |
2589 | } | |
2590 | else | |
2591 | { | |
2592 | val.X_op = O_constant; | |
2593 | val.X_add_number = 0; | |
2594 | } | |
cd3b81bd | 2595 | |
adeab39b MM |
2596 | if (val.X_op != O_constant |
2597 | || val.X_add_number < - 0x80 | |
2598 | || val.X_add_number > 0xff | |
2599 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2600 | { | |
2601 | if (exp.X_op != O_constant) | |
2602 | as_bad ("Unsupported variable size or fill value"); | |
2603 | else | |
e28c40d7 | 2604 | { |
adeab39b | 2605 | offsetT i; |
e28c40d7 | 2606 | |
adeab39b MM |
2607 | if (mult == 0) |
2608 | mult = 1; | |
2609 | for (i = 0; i < exp.X_add_number; i++) | |
2610 | emit_expr (&val, mult); | |
1356d77d | 2611 | } |
6efd877d KR |
2612 | } |
2613 | else | |
2614 | { | |
adeab39b | 2615 | if (exp.X_op == O_constant) |
e28c40d7 | 2616 | { |
adeab39b MM |
2617 | long repeat; |
2618 | ||
2619 | repeat = exp.X_add_number; | |
2620 | if (mult) | |
2621 | repeat *= mult; | |
2622 | if (repeat <= 0) | |
2623 | { | |
2624 | if (! flag_mri || repeat < 0) | |
2625 | as_warn (".space repeat count is %s, ignored", | |
2626 | repeat ? "negative" : "zero"); | |
2627 | goto getout; | |
2628 | } | |
2629 | ||
2630 | /* If we are in the absolute section, just bump the offset. */ | |
2631 | if (now_seg == absolute_section) | |
2632 | { | |
2633 | abs_section_offset += repeat; | |
2634 | goto getout; | |
2635 | } | |
2636 | ||
2637 | /* If we are secretly in an MRI common section, then | |
2638 | creating space just increases the size of the common | |
2639 | symbol. */ | |
2640 | if (mri_common_symbol != NULL) | |
2641 | { | |
2642 | S_SET_VALUE (mri_common_symbol, | |
2643 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2644 | goto getout; | |
2645 | } | |
2646 | ||
2647 | if (!need_pass_2) | |
2648 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2649 | repeat, (char *) 0); | |
e28c40d7 | 2650 | } |
adeab39b | 2651 | else |
1356d77d | 2652 | { |
adeab39b MM |
2653 | if (now_seg == absolute_section) |
2654 | { | |
2655 | as_bad ("space allocation too complex in absolute section"); | |
2656 | subseg_set (text_section, 0); | |
2657 | } | |
2658 | if (mri_common_symbol != NULL) | |
2659 | { | |
2660 | as_bad ("space allocation too complex in common section"); | |
2661 | mri_common_symbol = NULL; | |
2662 | } | |
2663 | if (!need_pass_2) | |
2664 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2665 | make_expr_symbol (&exp), 0L, (char *) 0); | |
1356d77d | 2666 | } |
adeab39b MM |
2667 | |
2668 | if (p) | |
2669 | *p = val.X_add_number; | |
6efd877d | 2670 | } |
3dce804d ILT |
2671 | |
2672 | getout: | |
2673 | if (flag_mri) | |
18c9057f | 2674 | mri_comment_end (stop, stopc); |
3dce804d | 2675 | |
6efd877d | 2676 | demand_empty_rest_of_line (); |
cd3b81bd | 2677 | } |
fecd2382 | 2678 | |
e28c40d7 ILT |
2679 | /* This is like s_space, but the value is a floating point number with |
2680 | the given precision. This is for the MRI dcb.s pseudo-op and | |
2681 | friends. */ | |
2682 | ||
2683 | void | |
2684 | s_float_space (float_type) | |
2685 | int float_type; | |
2686 | { | |
2687 | offsetT count; | |
2688 | int flen; | |
2689 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
18c9057f ILT |
2690 | char *stop = NULL; |
2691 | char stopc; | |
2692 | ||
2693 | if (flag_mri) | |
2694 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2695 | |
2696 | count = get_absolute_expression (); | |
2697 | ||
2698 | SKIP_WHITESPACE (); | |
2699 | if (*input_line_pointer != ',') | |
2700 | { | |
2701 | as_bad ("missing value"); | |
18c9057f ILT |
2702 | if (flag_mri) |
2703 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2704 | ignore_rest_of_line (); |
2705 | return; | |
2706 | } | |
2707 | ||
2708 | ++input_line_pointer; | |
2709 | ||
2710 | SKIP_WHITESPACE (); | |
2711 | ||
2712 | /* Skip any 0{letter} that may be present. Don't even check if the | |
2713 | * letter is legal. */ | |
2714 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) | |
2715 | input_line_pointer += 2; | |
2716 | ||
2717 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
2718 | with the exact digits specified. */ | |
2719 | if (input_line_pointer[0] == ':') | |
2720 | { | |
2721 | flen = hex_float (float_type, temp); | |
2722 | if (flen < 0) | |
2723 | { | |
18c9057f ILT |
2724 | if (flag_mri) |
2725 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2726 | ignore_rest_of_line (); |
2727 | return; | |
2728 | } | |
2729 | } | |
2730 | else | |
2731 | { | |
2732 | char *err; | |
2733 | ||
2734 | err = md_atof (float_type, temp, &flen); | |
2735 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
2736 | know (flen > 0); | |
2737 | if (err) | |
2738 | { | |
2739 | as_bad ("Bad floating literal: %s", err); | |
18c9057f ILT |
2740 | if (flag_mri) |
2741 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2742 | ignore_rest_of_line (); |
2743 | return; | |
2744 | } | |
2745 | } | |
2746 | ||
2747 | while (--count >= 0) | |
2748 | { | |
2749 | char *p; | |
2750 | ||
2751 | p = frag_more (flen); | |
2752 | memcpy (p, temp, (unsigned int) flen); | |
2753 | } | |
2754 | ||
18c9057f ILT |
2755 | if (flag_mri) |
2756 | mri_comment_end (stop, stopc); | |
2757 | ||
e28c40d7 ILT |
2758 | demand_empty_rest_of_line (); |
2759 | } | |
2760 | ||
2761 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
2762 | ||
2763 | void | |
2764 | s_struct (ignore) | |
2765 | int ignore; | |
2766 | { | |
18c9057f ILT |
2767 | char *stop = NULL; |
2768 | char stopc; | |
2769 | ||
2770 | if (flag_mri) | |
2771 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2772 | abs_section_offset = get_absolute_expression (); |
2773 | subseg_set (absolute_section, 0); | |
18c9057f ILT |
2774 | if (flag_mri) |
2775 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2776 | demand_empty_rest_of_line (); |
2777 | } | |
2778 | ||
fecd2382 | 2779 | void |
604633ae ILT |
2780 | s_text (ignore) |
2781 | int ignore; | |
fecd2382 | 2782 | { |
6efd877d | 2783 | register int temp; |
f8701a3f | 2784 | |
6efd877d | 2785 | temp = get_absolute_expression (); |
9471a360 | 2786 | subseg_set (text_section, (subsegT) temp); |
6efd877d | 2787 | demand_empty_rest_of_line (); |
80d80c64 KR |
2788 | #ifdef OBJ_VMS |
2789 | const_flag &= ~IN_DEFAULT_SECTION; | |
2790 | #endif | |
6efd877d | 2791 | } /* s_text() */ |
fecd2382 | 2792 | \f |
6efd877d | 2793 | |
6efd877d KR |
2794 | void |
2795 | demand_empty_rest_of_line () | |
2796 | { | |
2797 | SKIP_WHITESPACE (); | |
58d4951d | 2798 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
2799 | { |
2800 | input_line_pointer++; | |
2801 | } | |
2802 | else | |
2803 | { | |
2804 | ignore_rest_of_line (); | |
2805 | } | |
2806 | /* Return having already swallowed end-of-line. */ | |
2807 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
2808 | |
2809 | void | |
6efd877d | 2810 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 2811 | { |
58d4951d | 2812 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2813 | { |
6efd877d KR |
2814 | if (isprint (*input_line_pointer)) |
2815 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
2816 | *input_line_pointer); |
2817 | else | |
6efd877d | 2818 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
2819 | *input_line_pointer); |
2820 | while (input_line_pointer < buffer_limit | |
58d4951d | 2821 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2822 | { |
6efd877d | 2823 | input_line_pointer++; |
f8701a3f SC |
2824 | } |
2825 | } | |
6efd877d | 2826 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 2827 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
2828 | } |
2829 | ||
2830 | /* | |
2831 | * pseudo_set() | |
2832 | * | |
2833 | * In: Pointer to a symbol. | |
2834 | * Input_line_pointer->expression. | |
2835 | * | |
2836 | * Out: Input_line_pointer->just after any whitespace after expression. | |
2837 | * Tried to set symbol to value of expression. | |
2838 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
2839 | */ |
2840 | void | |
f8701a3f | 2841 | pseudo_set (symbolP) |
6efd877d | 2842 | symbolS *symbolP; |
fecd2382 | 2843 | { |
6efd877d | 2844 | expressionS exp; |
daad3bbf | 2845 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
f8701a3f | 2846 | int ext; |
fecd2382 | 2847 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2848 | |
6efd877d | 2849 | know (symbolP); /* NULL pointer is logic error. */ |
daad3bbf | 2850 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
6efd877d | 2851 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 2852 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2853 | |
5ac34ac3 | 2854 | (void) expression (&exp); |
f8701a3f | 2855 | |
5ac34ac3 ILT |
2856 | if (exp.X_op == O_illegal) |
2857 | as_bad ("illegal expression; zero assumed"); | |
2858 | else if (exp.X_op == O_absent) | |
2859 | as_bad ("missing expression; zero assumed"); | |
2860 | else if (exp.X_op == O_big) | |
2861 | as_bad ("%s number invalid; zero assumed", | |
2862 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
2863 | else if (exp.X_op == O_subtract | |
2864 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
2865 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
2866 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
2867 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 2868 | { |
5ac34ac3 ILT |
2869 | exp.X_op = O_constant; |
2870 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
2871 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 2872 | } |
5ac34ac3 ILT |
2873 | |
2874 | switch (exp.X_op) | |
9471a360 | 2875 | { |
5ac34ac3 ILT |
2876 | case O_illegal: |
2877 | case O_absent: | |
2878 | case O_big: | |
2879 | exp.X_add_number = 0; | |
2880 | /* Fall through. */ | |
2881 | case O_constant: | |
9471a360 | 2882 | S_SET_SEGMENT (symbolP, absolute_section); |
daad3bbf | 2883 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2884 | if (ext) |
2885 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 2886 | else |
6efd877d | 2887 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 2888 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 2889 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 2890 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 2891 | break; |
f8701a3f | 2892 | |
5ac34ac3 ILT |
2893 | case O_register: |
2894 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 2895 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
2896 | symbolP->sy_frag = &zero_address_frag; |
2897 | break; | |
2898 | ||
2899 | case O_symbol: | |
ef198870 KR |
2900 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section |
2901 | || exp.X_add_number != 0) | |
5ac34ac3 | 2902 | symbolP->sy_value = exp; |
6efd877d KR |
2903 | else |
2904 | { | |
80d80c64 KR |
2905 | symbolS *s = exp.X_add_symbol; |
2906 | ||
2907 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
daad3bbf | 2908 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2909 | if (ext) |
2910 | S_SET_EXTERNAL (symbolP); | |
2911 | else | |
2912 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 2913 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 | 2914 | S_SET_VALUE (symbolP, |
80d80c64 KR |
2915 | exp.X_add_number + S_GET_VALUE (s)); |
2916 | symbolP->sy_frag = s->sy_frag; | |
ef198870 | 2917 | copy_symbol_attributes (symbolP, s); |
5ac34ac3 ILT |
2918 | } |
2919 | break; | |
f8701a3f | 2920 | |
5ac34ac3 ILT |
2921 | default: |
2922 | /* The value is some complex expression. | |
2923 | FIXME: Should we set the segment to anything? */ | |
2924 | symbolP->sy_value = exp; | |
2925 | break; | |
f8701a3f | 2926 | } |
fecd2382 RP |
2927 | } |
2928 | \f | |
2929 | /* | |
2930 | * cons() | |
2931 | * | |
2932 | * CONStruct more frag of .bytes, or .words etc. | |
2933 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 2934 | * This understands EXPRESSIONS. |
fecd2382 RP |
2935 | * |
2936 | * Bug (?) | |
2937 | * | |
2938 | * This has a split personality. We use expression() to read the | |
2939 | * value. We can detect if the value won't fit in a byte or word. | |
2940 | * But we can't detect if expression() discarded significant digits | |
2941 | * in the case of a long. Not worth the crocks required to fix it. | |
2942 | */ | |
2943 | ||
40324362 KR |
2944 | /* Select a parser for cons expressions. */ |
2945 | ||
2946 | /* Some targets need to parse the expression in various fancy ways. | |
2947 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
2948 | (for example, the HPPA does this). Otherwise, you can define | |
2949 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
2950 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
2951 | are defined, which is the normal case, then only simple expressions | |
2952 | are permitted. */ | |
2953 | ||
1356d77d ILT |
2954 | static void |
2955 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2956 | ||
40324362 KR |
2957 | #ifndef TC_PARSE_CONS_EXPRESSION |
2958 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
2959 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
2960 | static void | |
2961 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2962 | #endif | |
40324362 KR |
2963 | #ifdef REPEAT_CONS_EXPRESSIONS |
2964 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
2965 | static void | |
2966 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2967 | #endif | |
2968 | ||
2969 | /* If we haven't gotten one yet, just call expression. */ | |
2970 | #ifndef TC_PARSE_CONS_EXPRESSION | |
2971 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
2972 | #endif | |
2973 | #endif | |
2974 | ||
6efd877d KR |
2975 | /* worker to do .byte etc statements */ |
2976 | /* clobbers input_line_pointer, checks */ | |
2977 | /* end-of-line. */ | |
86038ada ILT |
2978 | static void |
2979 | cons_worker (nbytes, rva) | |
604633ae | 2980 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
86038ada | 2981 | int rva; |
fecd2382 | 2982 | { |
286cb27a | 2983 | int c; |
6efd877d | 2984 | expressionS exp; |
86038ada | 2985 | char *stop = NULL; |
3dce804d | 2986 | char stopc; |
f8701a3f | 2987 | |
a2a5a4fa KR |
2988 | #ifdef md_flush_pending_output |
2989 | md_flush_pending_output (); | |
2990 | #endif | |
2991 | ||
18c9057f ILT |
2992 | if (flag_mri) |
2993 | stop = mri_comment_field (&stopc); | |
2994 | ||
40324362 | 2995 | if (is_it_end_of_statement ()) |
6efd877d | 2996 | { |
cef72a92 ILT |
2997 | if (flag_mri) |
2998 | mri_comment_end (stop, stopc); | |
40324362 KR |
2999 | demand_empty_rest_of_line (); |
3000 | return; | |
6efd877d | 3001 | } |
40324362 | 3002 | |
a69e5977 ILT |
3003 | #ifdef md_cons_align |
3004 | md_cons_align (nbytes); | |
3005 | #endif | |
3006 | ||
286cb27a | 3007 | c = 0; |
40324362 | 3008 | do |
6efd877d | 3009 | { |
cef72a92 | 3010 | if (flag_m68k_mri) |
1356d77d ILT |
3011 | parse_mri_cons (&exp, (unsigned int) nbytes); |
3012 | else | |
3013 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
6594d6b9 KR |
3014 | |
3015 | if (rva) | |
3016 | { | |
3017 | if (exp.X_op == O_symbol) | |
3018 | exp.X_op = O_symbol_rva; | |
3019 | else | |
3020 | as_fatal ("rva without symbol"); | |
3021 | } | |
3022 | emit_expr (&exp, (unsigned int) nbytes); | |
286cb27a | 3023 | ++c; |
40324362 | 3024 | } |
18c9057f | 3025 | while (*input_line_pointer++ == ','); |
40324362 | 3026 | |
286cb27a ILT |
3027 | /* In MRI mode, after an odd number of bytes, we must align to an |
3028 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3029 | or dcb.b. */ | |
3030 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3031 | mri_pending_align = 1; | |
3032 | ||
40324362 | 3033 | input_line_pointer--; /* Put terminator back into stream. */ |
86038ada ILT |
3034 | |
3035 | if (flag_mri) | |
18c9057f | 3036 | mri_comment_end (stop, stopc); |
86038ada | 3037 | |
40324362 | 3038 | demand_empty_rest_of_line (); |
30d3a445 | 3039 | } |
f8701a3f | 3040 | |
86038ada ILT |
3041 | |
3042 | void | |
3043 | cons (size) | |
3044 | int size; | |
3045 | { | |
3046 | cons_worker (size, 0); | |
3047 | } | |
3048 | ||
3049 | void | |
3050 | s_rva (size) | |
3051 | int size; | |
3052 | { | |
3053 | cons_worker (size, 1); | |
3054 | } | |
3055 | ||
3056 | ||
40324362 KR |
3057 | /* Put the contents of expression EXP into the object file using |
3058 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 3059 | |
40324362 KR |
3060 | void |
3061 | emit_expr (exp, nbytes) | |
3062 | expressionS *exp; | |
3063 | unsigned int nbytes; | |
3064 | { | |
5ac34ac3 | 3065 | operatorT op; |
40324362 | 3066 | register char *p; |
80aab579 | 3067 | valueT extra_digit = 0; |
f8701a3f | 3068 | |
40324362 KR |
3069 | /* Don't do anything if we are going to make another pass. */ |
3070 | if (need_pass_2) | |
3071 | return; | |
3072 | ||
5ac34ac3 | 3073 | op = exp->X_op; |
40324362 | 3074 | |
e28c40d7 ILT |
3075 | /* Allow `.word 0' in the absolute section. */ |
3076 | if (now_seg == absolute_section) | |
3077 | { | |
3078 | if (op != O_constant || exp->X_add_number != 0) | |
3079 | as_bad ("attempt to store value in absolute section"); | |
3080 | abs_section_offset += nbytes; | |
3081 | return; | |
3082 | } | |
3083 | ||
80aab579 ILT |
3084 | /* Handle a negative bignum. */ |
3085 | if (op == O_uminus | |
3086 | && exp->X_add_number == 0 | |
3087 | && exp->X_add_symbol->sy_value.X_op == O_big | |
3088 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
3089 | { | |
3090 | int i; | |
3091 | unsigned long carry; | |
3092 | ||
3093 | exp = &exp->X_add_symbol->sy_value; | |
3094 | ||
3095 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3096 | carry = 1; | |
3097 | for (i = 0; i < exp->X_add_number; i++) | |
3098 | { | |
3099 | unsigned long next; | |
3100 | ||
3101 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
3102 | & LITTLENUM_MASK) | |
3103 | + carry); | |
3104 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3105 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3106 | } | |
3107 | ||
3108 | /* We can ignore any carry out, because it will be handled by | |
3109 | extra_digit if it is needed. */ | |
3110 | ||
3111 | extra_digit = (valueT) -1; | |
3112 | op = O_big; | |
3113 | } | |
3114 | ||
5ac34ac3 | 3115 | if (op == O_absent || op == O_illegal) |
6efd877d | 3116 | { |
5ac34ac3 ILT |
3117 | as_warn ("zero assumed for missing expression"); |
3118 | exp->X_add_number = 0; | |
3119 | op = O_constant; | |
6efd877d | 3120 | } |
80aab579 | 3121 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 3122 | { |
80aab579 | 3123 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 3124 | exp->X_add_number = 0; |
5ac34ac3 | 3125 | op = O_constant; |
40324362 | 3126 | } |
5ac34ac3 | 3127 | else if (op == O_register) |
6efd877d | 3128 | { |
5ac34ac3 ILT |
3129 | as_warn ("register value used as expression"); |
3130 | op = O_constant; | |
40324362 | 3131 | } |
6efd877d | 3132 | |
604633ae | 3133 | p = frag_more ((int) nbytes); |
6efd877d | 3134 | |
40324362 KR |
3135 | #ifndef WORKING_DOT_WORD |
3136 | /* If we have the difference of two symbols in a word, save it on | |
3137 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 3138 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
3139 | { |
3140 | struct broken_word *x; | |
3141 | ||
3142 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3143 | x->next_broken_word = broken_words; | |
3144 | broken_words = x; | |
3145 | x->frag = frag_now; | |
3146 | x->word_goes_here = p; | |
3147 | x->dispfrag = 0; | |
3148 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 3149 | x->sub = exp->X_op_symbol; |
40324362 KR |
3150 | x->addnum = exp->X_add_number; |
3151 | x->added = 0; | |
3152 | new_broken_words++; | |
3153 | return; | |
3154 | } | |
f8701a3f | 3155 | #endif |
6efd877d | 3156 | |
80aab579 ILT |
3157 | /* If we have an integer, but the number of bytes is too large to |
3158 | pass to md_number_to_chars, handle it as a bignum. */ | |
3159 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3160 | { | |
3161 | valueT val; | |
3162 | int gencnt; | |
3163 | ||
3164 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
3165 | extra_digit = (valueT) -1; | |
3166 | val = (valueT) exp->X_add_number; | |
3167 | gencnt = 0; | |
3168 | do | |
3169 | { | |
3170 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
3171 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
3172 | ++gencnt; | |
3173 | } | |
3174 | while (val != 0); | |
3175 | op = exp->X_op = O_big; | |
3176 | exp->X_add_number = gencnt; | |
3177 | } | |
3178 | ||
5ac34ac3 | 3179 | if (op == O_constant) |
40324362 | 3180 | { |
44ce2f32 DE |
3181 | register valueT get; |
3182 | register valueT use; | |
3183 | register valueT mask; | |
3184 | register valueT unmask; | |
40324362 KR |
3185 | |
3186 | /* JF << of >= number of bits in the object is undefined. In | |
3187 | particular SPARC (Sun 4) has problems */ | |
44ce2f32 | 3188 | if (nbytes >= sizeof (valueT)) |
40324362 KR |
3189 | mask = 0; |
3190 | else | |
d2550c72 | 3191 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ |
6efd877d | 3192 | |
40324362 | 3193 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 3194 | |
40324362 KR |
3195 | #ifdef NEVER |
3196 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
3197 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
3198 | #endif | |
6efd877d | 3199 | |
40324362 KR |
3200 | get = exp->X_add_number; |
3201 | use = get & unmask; | |
3202 | if ((get & mask) != 0 && (get & mask) != mask) | |
3203 | { /* Leading bits contain both 0s & 1s. */ | |
a69e5977 ILT |
3204 | as_warn ("Value 0x%lx truncated to 0x%lx.", |
3205 | (unsigned long) get, (unsigned long) use); | |
40324362 | 3206 | } |
604633ae | 3207 | /* put bytes in right order. */ |
44ce2f32 | 3208 | md_number_to_chars (p, use, (int) nbytes); |
40324362 | 3209 | } |
80aab579 ILT |
3210 | else if (op == O_big) |
3211 | { | |
3212 | int size; | |
3213 | LITTLENUM_TYPE *nums; | |
3214 | ||
3215 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3216 | ||
3217 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3218 | if (nbytes < size) | |
3219 | { | |
3220 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
3221 | size = nbytes; | |
3222 | } | |
3223 | ||
3224 | if (target_big_endian) | |
3225 | { | |
3226 | while (nbytes > size) | |
3227 | { | |
3228 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3229 | nbytes -= CHARS_PER_LITTLENUM; | |
3230 | p += CHARS_PER_LITTLENUM; | |
3231 | } | |
3232 | ||
3233 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
3234 | while (size > 0) | |
3235 | { | |
3236 | --nums; | |
3237 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3238 | size -= CHARS_PER_LITTLENUM; | |
3239 | p += CHARS_PER_LITTLENUM; | |
3240 | } | |
3241 | } | |
3242 | else | |
3243 | { | |
3244 | nums = generic_bignum; | |
3245 | while (size > 0) | |
3246 | { | |
3247 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3248 | ++nums; | |
3249 | size -= CHARS_PER_LITTLENUM; | |
3250 | p += CHARS_PER_LITTLENUM; | |
3251 | nbytes -= CHARS_PER_LITTLENUM; | |
3252 | } | |
3253 | ||
3254 | while (nbytes > 0) | |
3255 | { | |
3256 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3257 | nbytes -= CHARS_PER_LITTLENUM; | |
3258 | p += CHARS_PER_LITTLENUM; | |
3259 | } | |
3260 | } | |
3261 | } | |
40324362 KR |
3262 | else |
3263 | { | |
1fbfe108 | 3264 | memset (p, 0, nbytes); |
6efd877d | 3265 | |
40324362 KR |
3266 | /* Now we need to generate a fixS to record the symbol value. |
3267 | This is easy for BFD. For other targets it can be more | |
3268 | complex. For very complex cases (currently, the HPPA and | |
3269 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3270 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3271 | the name of the reloc code that should be stored in the fixS. | |
3272 | If neither is defined, the code uses NO_RELOC if it is | |
3273 | defined, and otherwise uses 0. */ | |
6efd877d | 3274 | |
40324362 | 3275 | #ifdef BFD_ASSEMBLER |
4064305e SS |
3276 | #ifdef TC_CONS_FIX_NEW |
3277 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3278 | #else | |
a69e5977 ILT |
3279 | { |
3280 | bfd_reloc_code_real_type r; | |
3281 | ||
3282 | switch (nbytes) | |
3283 | { | |
3284 | case 1: | |
3285 | r = BFD_RELOC_8; | |
3286 | break; | |
3287 | case 2: | |
3288 | r = BFD_RELOC_16; | |
3289 | break; | |
3290 | case 4: | |
3291 | r = BFD_RELOC_32; | |
3292 | break; | |
3293 | case 8: | |
3294 | r = BFD_RELOC_64; | |
3295 | break; | |
3296 | default: | |
3297 | as_bad ("unsupported BFD relocation size %u", nbytes); | |
3298 | r = BFD_RELOC_32; | |
3299 | break; | |
3300 | } | |
3301 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3302 | 0, r); | |
3303 | } | |
4064305e | 3304 | #endif |
40324362 KR |
3305 | #else |
3306 | #ifdef TC_CONS_FIX_NEW | |
3307 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3308 | #else | |
3309 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3310 | it is defined, otherwise use NO_RELOC if it is defined, | |
3311 | otherwise use 0. */ | |
3312 | #ifndef TC_CONS_RELOC | |
3313 | #ifdef NO_RELOC | |
3314 | #define TC_CONS_RELOC NO_RELOC | |
3315 | #else | |
3316 | #define TC_CONS_RELOC 0 | |
3317 | #endif | |
3318 | #endif | |
80aab579 | 3319 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3320 | TC_CONS_RELOC); |
40324362 KR |
3321 | #endif /* TC_CONS_FIX_NEW */ |
3322 | #endif /* BFD_ASSEMBLER */ | |
3323 | } | |
3324 | } | |
3325 | \f | |
3326 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 3327 | |
40324362 KR |
3328 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
3329 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3330 | then pack them all together. We do a little better in that we allow | |
3331 | them in words, longs, etc. and we'll pack them in target byte order | |
3332 | for you. | |
6efd877d | 3333 | |
40324362 KR |
3334 | The rules are: pack least significat bit first, if a field doesn't |
3335 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3336 | explicitly *not* even a warning. The bitwidth should be considered | |
3337 | a "mask". | |
6efd877d | 3338 | |
40324362 KR |
3339 | To use this function the tc-XXX.h file should define |
3340 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 3341 | |
40324362 KR |
3342 | static void |
3343 | parse_bitfield_cons (exp, nbytes) | |
3344 | expressionS *exp; | |
3345 | unsigned int nbytes; | |
3346 | { | |
3347 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3348 | char *hold = input_line_pointer; | |
f8701a3f | 3349 | |
5ac34ac3 | 3350 | (void) expression (exp); |
f8701a3f | 3351 | |
40324362 KR |
3352 | if (*input_line_pointer == ':') |
3353 | { /* bitfields */ | |
3354 | long value = 0; | |
f8701a3f | 3355 | |
40324362 KR |
3356 | for (;;) |
3357 | { | |
3358 | unsigned long width; | |
f8701a3f | 3359 | |
40324362 KR |
3360 | if (*input_line_pointer != ':') |
3361 | { | |
3362 | input_line_pointer = hold; | |
3363 | break; | |
3364 | } /* next piece is not a bitfield */ | |
3365 | ||
3366 | /* In the general case, we can't allow | |
3367 | full expressions with symbol | |
3368 | differences and such. The relocation | |
3369 | entries for symbols not defined in this | |
3370 | assembly would require arbitrary field | |
3371 | widths, positions, and masks which most | |
3372 | of our current object formats don't | |
3373 | support. | |
cd3b81bd | 3374 | |
40324362 KR |
3375 | In the specific case where a symbol |
3376 | *is* defined in this assembly, we | |
3377 | *could* build fixups and track it, but | |
3378 | this could lead to confusion for the | |
3379 | backends. I'm lazy. I'll take any | |
3380 | SEG_ABSOLUTE. I think that means that | |
3381 | you can use a previous .set or | |
3382 | .equ type symbol. xoxorich. */ | |
3383 | ||
5ac34ac3 | 3384 | if (exp->X_op == O_absent) |
6efd877d | 3385 | { |
5ac34ac3 | 3386 | as_warn ("using a bit field width of zero"); |
40324362 | 3387 | exp->X_add_number = 0; |
5ac34ac3 | 3388 | exp->X_op = O_constant; |
40324362 KR |
3389 | } /* implied zero width bitfield */ |
3390 | ||
5ac34ac3 | 3391 | if (exp->X_op != O_constant) |
6efd877d | 3392 | { |
40324362 | 3393 | *input_line_pointer = '\0'; |
5ac34ac3 | 3394 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3395 | *input_line_pointer = ':'; |
3396 | demand_empty_rest_of_line (); | |
3397 | return; | |
3398 | } /* too complex */ | |
3399 | ||
3400 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 3401 | { |
80aab579 | 3402 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
3403 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
3404 | width = BITS_PER_CHAR * nbytes; | |
3405 | } /* too big */ | |
3406 | ||
3407 | if (width > bits_available) | |
9471a360 | 3408 | { |
40324362 KR |
3409 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
3410 | input_line_pointer = hold; | |
3411 | exp->X_add_number = value; | |
3412 | break; | |
3413 | } /* won't fit */ | |
3414 | ||
3415 | hold = ++input_line_pointer; /* skip ':' */ | |
3416 | ||
5ac34ac3 ILT |
3417 | (void) expression (exp); |
3418 | if (exp->X_op != O_constant) | |
9471a360 | 3419 | { |
40324362 KR |
3420 | char cache = *input_line_pointer; |
3421 | ||
3422 | *input_line_pointer = '\0'; | |
5ac34ac3 | 3423 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3424 | *input_line_pointer = cache; |
3425 | demand_empty_rest_of_line (); | |
3426 | return; | |
3427 | } /* too complex */ | |
3428 | ||
5ac34ac3 ILT |
3429 | value |= ((~(-1 << width) & exp->X_add_number) |
3430 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
3431 | |
3432 | if ((bits_available -= width) == 0 | |
3433 | || is_it_end_of_statement () | |
3434 | || *input_line_pointer != ',') | |
3435 | { | |
3436 | break; | |
3437 | } /* all the bitfields we're gonna get */ | |
3438 | ||
3439 | hold = ++input_line_pointer; | |
5ac34ac3 | 3440 | (void) expression (exp); |
40324362 KR |
3441 | } /* forever loop */ |
3442 | ||
3443 | exp->X_add_number = value; | |
5ac34ac3 | 3444 | exp->X_op = O_constant; |
80aab579 | 3445 | exp->X_unsigned = 1; |
40324362 KR |
3446 | } /* if looks like a bitfield */ |
3447 | } /* parse_bitfield_cons() */ | |
3448 | ||
3449 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3450 | \f | |
1356d77d | 3451 | /* Handle an MRI style string expression. */ |
40324362 KR |
3452 | |
3453 | static void | |
3454 | parse_mri_cons (exp, nbytes) | |
3455 | expressionS *exp; | |
3456 | unsigned int nbytes; | |
3457 | { | |
1356d77d ILT |
3458 | if (*input_line_pointer != '\'' |
3459 | && (input_line_pointer[1] != '\'' | |
3460 | || (*input_line_pointer != 'A' | |
3461 | && *input_line_pointer != 'E'))) | |
3462 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3463 | else | |
40324362 | 3464 | { |
40324362 KR |
3465 | int scan = 0; |
3466 | unsigned int result = 0; | |
1356d77d ILT |
3467 | |
3468 | /* An MRI style string. Cut into as many bytes as will fit into | |
3469 | a nbyte chunk, left justify if necessary, and separate with | |
3470 | commas so we can try again later. */ | |
3471 | if (*input_line_pointer == 'A') | |
3472 | ++input_line_pointer; | |
3473 | else if (*input_line_pointer == 'E') | |
3474 | { | |
3475 | as_bad ("EBCDIC constants are not supported"); | |
3476 | ++input_line_pointer; | |
3477 | } | |
3478 | ||
40324362 KR |
3479 | input_line_pointer++; |
3480 | for (scan = 0; scan < nbytes; scan++) | |
3481 | { | |
3482 | if (*input_line_pointer == '\'') | |
3483 | { | |
3484 | if (input_line_pointer[1] == '\'') | |
6efd877d | 3485 | { |
40324362 | 3486 | input_line_pointer++; |
f8701a3f | 3487 | } |
40324362 KR |
3488 | else |
3489 | break; | |
9471a360 | 3490 | } |
40324362 KR |
3491 | result = (result << 8) | (*input_line_pointer++); |
3492 | } | |
f8701a3f | 3493 | |
40324362 KR |
3494 | /* Left justify */ |
3495 | while (scan < nbytes) | |
3496 | { | |
3497 | result <<= 8; | |
3498 | scan++; | |
3499 | } | |
3500 | /* Create correct expression */ | |
5ac34ac3 | 3501 | exp->X_op = O_constant; |
40324362 | 3502 | exp->X_add_number = result; |
40324362 KR |
3503 | /* Fake it so that we can read the next char too */ |
3504 | if (input_line_pointer[0] != '\'' || | |
3505 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3506 | { | |
3507 | input_line_pointer -= 2; | |
3508 | input_line_pointer[0] = ','; | |
3509 | input_line_pointer[1] = '\''; | |
3510 | } | |
3511 | else | |
3512 | input_line_pointer++; | |
3513 | } | |
40324362 | 3514 | } |
40324362 KR |
3515 | \f |
3516 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3517 | ||
3518 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3519 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3520 | object file COUNT times. | |
3521 | ||
3522 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3523 | ||
3524 | static void | |
3525 | parse_repeat_cons (exp, nbytes) | |
3526 | expressionS *exp; | |
3527 | unsigned int nbytes; | |
3528 | { | |
3529 | expressionS count; | |
40324362 KR |
3530 | register int i; |
3531 | ||
3532 | expression (exp); | |
3533 | ||
3534 | if (*input_line_pointer != ':') | |
3535 | { | |
3536 | /* No repeat count. */ | |
3537 | return; | |
3538 | } | |
3539 | ||
3540 | ++input_line_pointer; | |
5ac34ac3 ILT |
3541 | expression (&count); |
3542 | if (count.X_op != O_constant | |
40324362 KR |
3543 | || count.X_add_number <= 0) |
3544 | { | |
3545 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
3546 | return; | |
3547 | } | |
3548 | ||
3549 | /* The cons function is going to output this expression once. So we | |
3550 | output it count - 1 times. */ | |
3551 | for (i = count.X_add_number - 1; i > 0; i--) | |
3552 | emit_expr (exp, nbytes); | |
3553 | } | |
3554 | ||
3555 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 3556 | \f |
e28c40d7 ILT |
3557 | /* Parse a floating point number represented as a hex constant. This |
3558 | permits users to specify the exact bits they want in the floating | |
3559 | point number. */ | |
3560 | ||
3561 | static int | |
3562 | hex_float (float_type, bytes) | |
3563 | int float_type; | |
3564 | char *bytes; | |
3565 | { | |
3566 | int length; | |
3567 | int i; | |
3568 | ||
3569 | switch (float_type) | |
3570 | { | |
3571 | case 'f': | |
3572 | case 'F': | |
3573 | case 's': | |
3574 | case 'S': | |
3575 | length = 4; | |
3576 | break; | |
3577 | ||
3578 | case 'd': | |
3579 | case 'D': | |
3580 | case 'r': | |
3581 | case 'R': | |
3582 | length = 8; | |
3583 | break; | |
3584 | ||
3585 | case 'x': | |
3586 | case 'X': | |
3587 | length = 12; | |
3588 | break; | |
3589 | ||
3590 | case 'p': | |
3591 | case 'P': | |
3592 | length = 12; | |
3593 | break; | |
3594 | ||
3595 | default: | |
3596 | as_bad ("Unknown floating type type '%c'", float_type); | |
3597 | return -1; | |
3598 | } | |
3599 | ||
3600 | /* It would be nice if we could go through expression to parse the | |
3601 | hex constant, but if we get a bignum it's a pain to sort it into | |
3602 | the buffer correctly. */ | |
3603 | i = 0; | |
3604 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
3605 | { | |
3606 | int d; | |
3607 | ||
3608 | /* The MRI assembler accepts arbitrary underscores strewn about | |
3609 | through the hex constant, so we ignore them as well. */ | |
3610 | if (*input_line_pointer == '_') | |
3611 | { | |
3612 | ++input_line_pointer; | |
3613 | continue; | |
3614 | } | |
3615 | ||
3616 | if (i >= length) | |
3617 | { | |
3618 | as_warn ("Floating point constant too large"); | |
3619 | return -1; | |
3620 | } | |
3621 | d = hex_value (*input_line_pointer) << 4; | |
3622 | ++input_line_pointer; | |
3623 | while (*input_line_pointer == '_') | |
3624 | ++input_line_pointer; | |
3625 | if (hex_p (*input_line_pointer)) | |
3626 | { | |
3627 | d += hex_value (*input_line_pointer); | |
3628 | ++input_line_pointer; | |
3629 | } | |
a920b693 ILT |
3630 | if (target_big_endian) |
3631 | bytes[i] = d; | |
3632 | else | |
3633 | bytes[length - i - 1] = d; | |
3634 | ++i; | |
e28c40d7 ILT |
3635 | } |
3636 | ||
3637 | if (i < length) | |
a920b693 ILT |
3638 | { |
3639 | if (target_big_endian) | |
3640 | memset (bytes + i, 0, length - i); | |
3641 | else | |
3642 | memset (bytes, 0, length - i); | |
3643 | } | |
e28c40d7 ILT |
3644 | |
3645 | return length; | |
3646 | } | |
3647 | ||
fecd2382 RP |
3648 | /* |
3649 | * float_cons() | |
3650 | * | |
3651 | * CONStruct some more frag chars of .floats .ffloats etc. | |
3652 | * Makes 0 or more new frags. | |
3653 | * If need_pass_2 == 1, no frags are emitted. | |
3654 | * This understands only floating literals, not expressions. Sorry. | |
3655 | * | |
3656 | * A floating constant is defined by atof_generic(), except it is preceded | |
3657 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
3658 | * reading, I decided to be incompatible. This always tries to give you | |
3659 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
3660 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
3661 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
3662 | * scanners you directed AS to use. | |
3663 | * | |
3664 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
3665 | * | |
3666 | */ | |
3667 | ||
ba71c54d KR |
3668 | void |
3669 | float_cons (float_type) | |
6efd877d | 3670 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 3671 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 3672 | { |
6efd877d | 3673 | register char *p; |
6efd877d KR |
3674 | int length; /* Number of chars in an object. */ |
3675 | register char *err; /* Error from scanning floating literal. */ | |
3676 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 3677 | |
6efd877d | 3678 | if (is_it_end_of_statement ()) |
f8701a3f | 3679 | { |
1e9cf565 ILT |
3680 | demand_empty_rest_of_line (); |
3681 | return; | |
f8701a3f | 3682 | } |
1e9cf565 | 3683 | |
a69e5977 ILT |
3684 | #ifdef md_flush_pending_output |
3685 | md_flush_pending_output (); | |
3686 | #endif | |
3687 | ||
1e9cf565 | 3688 | do |
f8701a3f SC |
3689 | { |
3690 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 3691 | SKIP_WHITESPACE (); |
1e9cf565 | 3692 | |
f8701a3f SC |
3693 | /* Skip any 0{letter} that may be present. Don't even check if the |
3694 | * letter is legal. Someone may invent a "z" format and this routine | |
3695 | * has no use for such information. Lusers beware: you get | |
3696 | * diagnostics if your input is ill-conditioned. | |
3697 | */ | |
6efd877d KR |
3698 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
3699 | input_line_pointer += 2; | |
f8701a3f | 3700 | |
1356d77d ILT |
3701 | /* Accept :xxxx, where the x's are hex digits, for a floating |
3702 | point with the exact digits specified. */ | |
3703 | if (input_line_pointer[0] == ':') | |
f8701a3f | 3704 | { |
e28c40d7 ILT |
3705 | ++input_line_pointer; |
3706 | length = hex_float (float_type, temp); | |
3707 | if (length < 0) | |
1356d77d | 3708 | { |
1356d77d ILT |
3709 | ignore_rest_of_line (); |
3710 | return; | |
3711 | } | |
1356d77d ILT |
3712 | } |
3713 | else | |
3714 | { | |
3715 | err = md_atof (float_type, temp, &length); | |
3716 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3717 | know (length > 0); | |
3718 | if (err) | |
3719 | { | |
3720 | as_bad ("Bad floating literal: %s", err); | |
3721 | ignore_rest_of_line (); | |
3722 | return; | |
3723 | } | |
f8701a3f | 3724 | } |
1e9cf565 ILT |
3725 | |
3726 | if (!need_pass_2) | |
f8701a3f | 3727 | { |
1e9cf565 ILT |
3728 | int count; |
3729 | ||
3730 | count = 1; | |
3731 | ||
3732 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3733 | if (*input_line_pointer == ':') | |
3734 | { | |
1e9cf565 ILT |
3735 | expressionS count_exp; |
3736 | ||
3737 | ++input_line_pointer; | |
5ac34ac3 ILT |
3738 | expression (&count_exp); |
3739 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
3740 | || count_exp.X_add_number <= 0) |
3741 | { | |
5ac34ac3 | 3742 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
3743 | } |
3744 | else | |
3745 | count = count_exp.X_add_number; | |
3746 | } | |
3747 | #endif | |
3748 | ||
3749 | while (--count >= 0) | |
a39116f1 | 3750 | { |
f8701a3f | 3751 | p = frag_more (length); |
604633ae | 3752 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 3753 | } |
542e1629 | 3754 | } |
1e9cf565 | 3755 | SKIP_WHITESPACE (); |
f8701a3f | 3756 | } |
1e9cf565 ILT |
3757 | while (*input_line_pointer++ == ','); |
3758 | ||
3759 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 3760 | demand_empty_rest_of_line (); |
f8701a3f | 3761 | } /* float_cons() */ |
fecd2382 RP |
3762 | \f |
3763 | /* | |
3764 | * stringer() | |
3765 | * | |
3766 | * We read 0 or more ',' seperated, double-quoted strings. | |
3767 | * | |
3768 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
3769 | */ | |
a39116f1 RP |
3770 | |
3771 | ||
6efd877d KR |
3772 | void |
3773 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
3774 | /* Checks end-of-line. */ | |
f8701a3f | 3775 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 3776 | { |
f8701a3f | 3777 | register unsigned int c; |
6efd877d | 3778 | |
a2a5a4fa KR |
3779 | #ifdef md_flush_pending_output |
3780 | md_flush_pending_output (); | |
3781 | #endif | |
3782 | ||
f8701a3f SC |
3783 | /* |
3784 | * The following awkward logic is to parse ZERO or more strings, | |
3785 | * comma seperated. Recall a string expression includes spaces | |
3786 | * before the opening '\"' and spaces after the closing '\"'. | |
3787 | * We fake a leading ',' if there is (supposed to be) | |
3788 | * a 1st, expression. We keep demanding expressions for each | |
3789 | * ','. | |
3790 | */ | |
6efd877d KR |
3791 | if (is_it_end_of_statement ()) |
3792 | { | |
3793 | c = 0; /* Skip loop. */ | |
3794 | ++input_line_pointer; /* Compensate for end of loop. */ | |
3795 | } | |
f8701a3f | 3796 | else |
6efd877d KR |
3797 | { |
3798 | c = ','; /* Do loop. */ | |
3799 | } | |
3800 | while (c == ',' || c == '<' || c == '"') | |
3801 | { | |
3802 | SKIP_WHITESPACE (); | |
3803 | switch (*input_line_pointer) | |
3804 | { | |
3805 | case '\"': | |
3806 | ++input_line_pointer; /*->1st char of string. */ | |
3807 | while (is_a_char (c = next_char_of_string ())) | |
3808 | { | |
3809 | FRAG_APPEND_1_CHAR (c); | |
3810 | } | |
3811 | if (append_zero) | |
3812 | { | |
3813 | FRAG_APPEND_1_CHAR (0); | |
3814 | } | |
3815 | know (input_line_pointer[-1] == '\"'); | |
3816 | break; | |
3817 | case '<': | |
3818 | input_line_pointer++; | |
3819 | c = get_single_number (); | |
3820 | FRAG_APPEND_1_CHAR (c); | |
3821 | if (*input_line_pointer != '>') | |
3822 | { | |
3823 | as_bad ("Expected <nn>"); | |
3824 | } | |
3825 | input_line_pointer++; | |
3826 | break; | |
3827 | case ',': | |
3828 | input_line_pointer++; | |
3829 | break; | |
3830 | } | |
3831 | SKIP_WHITESPACE (); | |
3832 | c = *input_line_pointer; | |
f8701a3f | 3833 | } |
f8701a3f | 3834 | |
6efd877d KR |
3835 | demand_empty_rest_of_line (); |
3836 | } /* stringer() */ | |
fecd2382 | 3837 | \f |
6efd877d | 3838 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
3839 | high bits set. We'll probably also have trouble with |
3840 | multibyte chars, wide chars, etc. Also be careful about | |
3841 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 3842 | |
6efd877d KR |
3843 | unsigned int |
3844 | next_char_of_string () | |
3845 | { | |
3846 | register unsigned int c; | |
3847 | ||
3848 | c = *input_line_pointer++ & CHAR_MASK; | |
3849 | switch (c) | |
3850 | { | |
3851 | case '\"': | |
3852 | c = NOT_A_CHAR; | |
3853 | break; | |
3854 | ||
a69e5977 ILT |
3855 | case '\n': |
3856 | as_warn ("Unterminated string: Newline inserted."); | |
3857 | bump_line_counters (); | |
3858 | break; | |
3859 | ||
ddb393cf | 3860 | #ifndef NO_STRING_ESCAPES |
6efd877d KR |
3861 | case '\\': |
3862 | switch (c = *input_line_pointer++) | |
3863 | { | |
3864 | case 'b': | |
3865 | c = '\b'; | |
3866 | break; | |
3867 | ||
3868 | case 'f': | |
3869 | c = '\f'; | |
3870 | break; | |
3871 | ||
3872 | case 'n': | |
3873 | c = '\n'; | |
3874 | break; | |
3875 | ||
3876 | case 'r': | |
3877 | c = '\r'; | |
3878 | break; | |
3879 | ||
3880 | case 't': | |
3881 | c = '\t'; | |
3882 | break; | |
3883 | ||
6efd877d KR |
3884 | case 'v': |
3885 | c = '\013'; | |
3886 | break; | |
6efd877d KR |
3887 | |
3888 | case '\\': | |
3889 | case '"': | |
3890 | break; /* As itself. */ | |
3891 | ||
3892 | case '0': | |
3893 | case '1': | |
3894 | case '2': | |
3895 | case '3': | |
3896 | case '4': | |
3897 | case '5': | |
3898 | case '6': | |
3899 | case '7': | |
3900 | case '8': | |
3901 | case '9': | |
3902 | { | |
3903 | long number; | |
d4c8cbd8 | 3904 | int i; |
6efd877d | 3905 | |
d4c8cbd8 | 3906 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
3907 | { |
3908 | number = number * 8 + c - '0'; | |
3909 | } | |
3910 | c = number & 0xff; | |
3911 | } | |
3912 | --input_line_pointer; | |
3913 | break; | |
3914 | ||
d4c8cbd8 JL |
3915 | case 'x': |
3916 | case 'X': | |
3917 | { | |
3918 | long number; | |
3919 | ||
3920 | number = 0; | |
3921 | c = *input_line_pointer++; | |
3922 | while (isxdigit (c)) | |
3923 | { | |
3924 | if (isdigit (c)) | |
3925 | number = number * 16 + c - '0'; | |
3926 | else if (isupper (c)) | |
3927 | number = number * 16 + c - 'A' + 10; | |
3928 | else | |
3929 | number = number * 16 + c - 'a' + 10; | |
3930 | c = *input_line_pointer++; | |
3931 | } | |
3932 | c = number & 0xff; | |
3933 | --input_line_pointer; | |
3934 | } | |
3935 | break; | |
3936 | ||
6efd877d KR |
3937 | case '\n': |
3938 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
3939 | as_warn ("Unterminated string: Newline inserted."); | |
3940 | c = '\n'; | |
a69e5977 | 3941 | bump_line_counters (); |
6efd877d KR |
3942 | break; |
3943 | ||
3944 | default: | |
3945 | ||
fecd2382 | 3946 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
3947 | as_bad ("Bad escaped character in string, '?' assumed"); |
3948 | c = '?'; | |
fecd2382 | 3949 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
3950 | |
3951 | break; | |
3952 | } /* switch on escaped char */ | |
3953 | break; | |
ddb393cf | 3954 | #endif /* ! defined (NO_STRING_ESCAPES) */ |
6efd877d KR |
3955 | |
3956 | default: | |
3957 | break; | |
3958 | } /* switch on char */ | |
3959 | return (c); | |
3960 | } /* next_char_of_string() */ | |
fecd2382 RP |
3961 | \f |
3962 | static segT | |
f8701a3f | 3963 | get_segmented_expression (expP) |
6efd877d | 3964 | register expressionS *expP; |
fecd2382 | 3965 | { |
6efd877d | 3966 | register segT retval; |
f8701a3f | 3967 | |
9471a360 | 3968 | retval = expression (expP); |
5ac34ac3 ILT |
3969 | if (expP->X_op == O_illegal |
3970 | || expP->X_op == O_absent | |
3971 | || expP->X_op == O_big) | |
f8701a3f | 3972 | { |
5ac34ac3 ILT |
3973 | as_bad ("expected address expression; zero assumed"); |
3974 | expP->X_op = O_constant; | |
6efd877d | 3975 | expP->X_add_number = 0; |
5ac34ac3 | 3976 | retval = absolute_section; |
f8701a3f | 3977 | } |
5ac34ac3 | 3978 | return retval; |
fecd2382 RP |
3979 | } |
3980 | ||
6efd877d KR |
3981 | static segT |
3982 | get_known_segmented_expression (expP) | |
3983 | register expressionS *expP; | |
fecd2382 | 3984 | { |
6efd877d | 3985 | register segT retval; |
f8701a3f | 3986 | |
9471a360 | 3987 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 3988 | { |
5ac34ac3 ILT |
3989 | /* There is no easy way to extract the undefined symbol from the |
3990 | expression. */ | |
3991 | if (expP->X_add_symbol != NULL | |
3992 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
3993 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
3994 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 3995 | else |
5ac34ac3 ILT |
3996 | as_warn ("some symbol undefined; zero assumed"); |
3997 | retval = absolute_section; | |
3998 | expP->X_op = O_constant; | |
6efd877d | 3999 | expP->X_add_number = 0; |
f8701a3f | 4000 | } |
5ac34ac3 | 4001 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 4002 | return (retval); |
fecd2382 RP |
4003 | } /* get_known_segmented_expression() */ |
4004 | ||
58d4951d | 4005 | offsetT |
f8701a3f | 4006 | get_absolute_expression () |
fecd2382 | 4007 | { |
6efd877d | 4008 | expressionS exp; |
f8701a3f | 4009 | |
5ac34ac3 ILT |
4010 | expression (&exp); |
4011 | if (exp.X_op != O_constant) | |
f8701a3f | 4012 | { |
5ac34ac3 | 4013 | if (exp.X_op != O_absent) |
cd3b81bd | 4014 | as_bad ("bad or irreducible absolute expression; zero assumed"); |
6efd877d | 4015 | exp.X_add_number = 0; |
f8701a3f | 4016 | } |
5ac34ac3 | 4017 | return exp.X_add_number; |
fecd2382 RP |
4018 | } |
4019 | ||
6efd877d KR |
4020 | char /* return terminator */ |
4021 | get_absolute_expression_and_terminator (val_pointer) | |
4022 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 4023 | { |
58d4951d ILT |
4024 | /* FIXME: val_pointer should probably be offsetT *. */ |
4025 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 4026 | return (*input_line_pointer++); |
fecd2382 RP |
4027 | } |
4028 | \f | |
4029 | /* | |
4030 | * demand_copy_C_string() | |
4031 | * | |
4032 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
4033 | * Give a warning if that happens. | |
4034 | */ | |
4035 | char * | |
f8701a3f | 4036 | demand_copy_C_string (len_pointer) |
6efd877d | 4037 | int *len_pointer; |
fecd2382 | 4038 | { |
6efd877d | 4039 | register char *s; |
f8701a3f | 4040 | |
6efd877d | 4041 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
4042 | { |
4043 | register int len; | |
4044 | ||
6594d6b9 | 4045 | for (len = *len_pointer; len > 0; len--) |
f8701a3f | 4046 | { |
6efd877d | 4047 | if (*s == 0) |
fecd2382 | 4048 | { |
f8701a3f SC |
4049 | s = 0; |
4050 | len = 1; | |
6efd877d KR |
4051 | *len_pointer = 0; |
4052 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 4053 | } |
f8701a3f SC |
4054 | } |
4055 | } | |
6594d6b9 | 4056 | return s; |
fecd2382 RP |
4057 | } |
4058 | \f | |
4059 | /* | |
4060 | * demand_copy_string() | |
4061 | * | |
4062 | * Demand string, but return a safe (=private) copy of the string. | |
4063 | * Return NULL if we can't read a string here. | |
4064 | */ | |
6ef37255 | 4065 | char * |
6efd877d KR |
4066 | demand_copy_string (lenP) |
4067 | int *lenP; | |
fecd2382 | 4068 | { |
6efd877d KR |
4069 | register unsigned int c; |
4070 | register int len; | |
4071 | char *retval; | |
4072 | ||
4073 | len = 0; | |
4074 | SKIP_WHITESPACE (); | |
4075 | if (*input_line_pointer == '\"') | |
4076 | { | |
4077 | input_line_pointer++; /* Skip opening quote. */ | |
4078 | ||
4079 | while (is_a_char (c = next_char_of_string ())) | |
4080 | { | |
4081 | obstack_1grow (¬es, c); | |
4082 | len++; | |
fecd2382 | 4083 | } |
42ac8fa8 ILT |
4084 | /* JF this next line is so demand_copy_C_string will return a |
4085 | null terminated string. */ | |
6efd877d KR |
4086 | obstack_1grow (¬es, '\0'); |
4087 | retval = obstack_finish (¬es); | |
4088 | } | |
4089 | else | |
4090 | { | |
4091 | as_warn ("Missing string"); | |
4092 | retval = NULL; | |
4093 | ignore_rest_of_line (); | |
4094 | } | |
4095 | *lenP = len; | |
4096 | return (retval); | |
4097 | } /* demand_copy_string() */ | |
fecd2382 RP |
4098 | \f |
4099 | /* | |
4100 | * is_it_end_of_statement() | |
4101 | * | |
4102 | * In: Input_line_pointer->next character. | |
4103 | * | |
4104 | * Do: Skip input_line_pointer over all whitespace. | |
4105 | * | |
4106 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 4107 | */ |
6efd877d KR |
4108 | int |
4109 | is_it_end_of_statement () | |
4110 | { | |
4111 | SKIP_WHITESPACE (); | |
58d4951d | 4112 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 4113 | } /* is_it_end_of_statement() */ |
fecd2382 | 4114 | |
6efd877d KR |
4115 | void |
4116 | equals (sym_name) | |
4117 | char *sym_name; | |
fecd2382 | 4118 | { |
6efd877d | 4119 | register symbolS *symbolP; /* symbol we are working with */ |
86038ada | 4120 | char *stop; |
18c9057f | 4121 | char stopc; |
f8701a3f SC |
4122 | |
4123 | input_line_pointer++; | |
6efd877d | 4124 | if (*input_line_pointer == '=') |
f8701a3f SC |
4125 | input_line_pointer++; |
4126 | ||
6efd877d | 4127 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
4128 | input_line_pointer++; |
4129 | ||
86038ada | 4130 | if (flag_mri) |
18c9057f | 4131 | stop = mri_comment_field (&stopc); |
86038ada | 4132 | |
6efd877d KR |
4133 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
4134 | { | |
4135 | /* Turn '. = mumble' into a .org mumble */ | |
4136 | register segT segment; | |
4137 | expressionS exp; | |
f8701a3f | 4138 | |
6efd877d KR |
4139 | segment = get_known_segmented_expression (&exp); |
4140 | if (!need_pass_2) | |
e28c40d7 | 4141 | do_org (segment, &exp, 0); |
6efd877d KR |
4142 | } |
4143 | else | |
4144 | { | |
4145 | symbolP = symbol_find_or_make (sym_name); | |
4146 | pseudo_set (symbolP); | |
4147 | } | |
86038ada ILT |
4148 | |
4149 | if (flag_mri) | |
18c9057f | 4150 | mri_comment_end (stop, stopc); |
6efd877d | 4151 | } /* equals() */ |
fecd2382 RP |
4152 | |
4153 | /* .include -- include a file at this point. */ | |
4154 | ||
4155 | /* ARGSUSED */ | |
6efd877d KR |
4156 | void |
4157 | s_include (arg) | |
4158 | int arg; | |
fecd2382 | 4159 | { |
f8701a3f SC |
4160 | char *newbuf; |
4161 | char *filename; | |
4162 | int i; | |
4163 | FILE *try; | |
4164 | char *path; | |
4165 | ||
cef72a92 | 4166 | if (! flag_m68k_mri) |
ca232972 ILT |
4167 | filename = demand_copy_string (&i); |
4168 | else | |
4169 | { | |
4170 | SKIP_WHITESPACE (); | |
4171 | i = 0; | |
4172 | while (! is_end_of_line[(unsigned char) *input_line_pointer] | |
4173 | && *input_line_pointer != ' ' | |
4174 | && *input_line_pointer != '\t') | |
4175 | { | |
4176 | obstack_1grow (¬es, *input_line_pointer); | |
4177 | ++input_line_pointer; | |
4178 | ++i; | |
4179 | } | |
4180 | obstack_1grow (¬es, '\0'); | |
4181 | filename = obstack_finish (¬es); | |
42ac8fa8 ILT |
4182 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
4183 | ++input_line_pointer; | |
ca232972 | 4184 | } |
6efd877d | 4185 | demand_empty_rest_of_line (); |
604633ae | 4186 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
4187 | for (i = 0; i < include_dir_count; i++) |
4188 | { | |
4189 | strcpy (path, include_dirs[i]); | |
4190 | strcat (path, "/"); | |
4191 | strcat (path, filename); | |
f2889110 | 4192 | if (0 != (try = fopen (path, "r"))) |
6efd877d KR |
4193 | { |
4194 | fclose (try); | |
4195 | goto gotit; | |
4196 | } | |
4197 | } | |
4198 | free (path); | |
f8701a3f SC |
4199 | path = filename; |
4200 | gotit: | |
4201 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
4202 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
4203 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 4204 | } /* s_include() */ |
fecd2382 | 4205 | |
6efd877d KR |
4206 | void |
4207 | add_include_dir (path) | |
4208 | char *path; | |
fecd2382 | 4209 | { |
f8701a3f SC |
4210 | int i; |
4211 | ||
4212 | if (include_dir_count == 0) | |
4213 | { | |
6efd877d | 4214 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
4215 | include_dirs[0] = "."; /* Current dir */ |
4216 | include_dir_count = 2; | |
4217 | } | |
4218 | else | |
4219 | { | |
4220 | include_dir_count++; | |
6efd877d KR |
4221 | include_dirs = (char **) realloc (include_dirs, |
4222 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
4223 | } |
4224 | ||
6efd877d | 4225 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 4226 | |
6efd877d KR |
4227 | i = strlen (path); |
4228 | if (i > include_dir_maxlen) | |
4229 | include_dir_maxlen = i; | |
4230 | } /* add_include_dir() */ | |
fecd2382 | 4231 | |
6efd877d KR |
4232 | void |
4233 | s_ignore (arg) | |
4234 | int arg; | |
fecd2382 | 4235 | { |
58d4951d | 4236 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
4237 | { |
4238 | ++input_line_pointer; | |
4239 | } | |
4240 | ++input_line_pointer; | |
4064305e SS |
4241 | } |
4242 | ||
604633ae | 4243 | |
6594d6b9 KR |
4244 | void |
4245 | read_print_statistics (file) | |
4246 | FILE *file; | |
4247 | { | |
4248 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
4249 | } | |
4250 | ||
fecd2382 | 4251 | /* end of read.c */ |