Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* read.c - read a source file - |
d341ae3f | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
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 | |
8ff75001 ILT |
18 | along with GAS; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
fecd2382 | 21 | |
016e0d42 | 22 | #if 0 |
fecd2382 RP |
23 | #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will |
24 | change this a bit. But then, GNU isn't | |
25 | spozed to run on your machine anyway. | |
26 | (RMS is so shortsighted sometimes.) | |
27 | */ | |
016e0d42 ILT |
28 | #else |
29 | #define MASK_CHAR ((int)(unsigned char)-1) | |
30 | #endif | |
fecd2382 | 31 | |
9a7d824a | 32 | |
9471a360 KR |
33 | /* This is the largest known floating point format (for now). It will |
34 | grow when we do 4361 style flonums. */ | |
fecd2382 | 35 | |
9471a360 | 36 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
fecd2382 | 37 | |
016e0d42 ILT |
38 | /* Routines that read assembler source text to build spagetti in memory. |
39 | Another group of these functions is in the expr.c module. */ | |
fecd2382 | 40 | |
9471a360 | 41 | /* for isdigit() */ |
6efd877d KR |
42 | #include <ctype.h> |
43 | ||
fecd2382 | 44 | #include "as.h" |
9471a360 | 45 | #include "subsegs.h" |
7e047ac2 ILT |
46 | #include "sb.h" |
47 | #include "macro.h" | |
fecd2382 | 48 | #include "obstack.h" |
9a7d824a | 49 | #include "listing.h" |
a69e5977 | 50 | #include "ecoff.h" |
9a7d824a | 51 | |
9a7d824a ILT |
52 | #ifndef TC_START_LABEL |
53 | #define TC_START_LABEL(x,y) (x==':') | |
54 | #endif | |
fecd2382 | 55 | |
016e0d42 ILT |
56 | /* The NOP_OPCODE is for the alignment fill value. |
57 | * fill it a nop instruction so that the disassembler does not choke | |
58 | * on it | |
59 | */ | |
60 | #ifndef NOP_OPCODE | |
61 | #define NOP_OPCODE 0x00 | |
62 | #endif | |
63 | ||
64 | char *input_line_pointer; /*->next char of source file to parse. */ | |
fecd2382 RP |
65 | |
66 | #if BITS_PER_CHAR != 8 | |
6efd877d KR |
67 | /* The following table is indexed by[(char)] and will break if |
68 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
69 | die horribly; | |
fecd2382 | 70 | #endif |
f8701a3f | 71 | |
c978e704 ILT |
72 | #ifndef LEX_AT |
73 | /* The m88k unfortunately uses @ as a label beginner. */ | |
74 | #define LEX_AT 0 | |
75 | #endif | |
76 | ||
ddb393cf ILT |
77 | #ifndef LEX_BR |
78 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
79 | #define LEX_BR 0 | |
80 | #endif | |
81 | ||
6ef37255 KR |
82 | #ifndef LEX_PCT |
83 | /* The Delta 68k assembler permits % inside label names. */ | |
84 | #define LEX_PCT 0 | |
85 | #endif | |
86 | ||
18c9057f ILT |
87 | #ifndef LEX_QM |
88 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
89 | #define LEX_QM 0 | |
90 | #endif | |
91 | ||
6594d6b9 KR |
92 | #ifndef LEX_DOLLAR |
93 | /* The a29k assembler does not permits labels to start with $. */ | |
94 | #define LEX_DOLLAR 3 | |
95 | #endif | |
96 | ||
151c3ec0 ILT |
97 | #ifndef LEX_TILDE |
98 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
99 | #define LEX_TILDE 0 | |
100 | #endif | |
101 | ||
016e0d42 | 102 | /* used by is_... macros. our ctype[] */ |
1356d77d | 103 | char lex_type[256] = |
016e0d42 ILT |
104 | { |
105 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
106 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
6594d6b9 | 107 | 0, 0, 0, 0, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
18c9057f | 108 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
c978e704 | 109 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ |
ddb393cf | 110 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ |
016e0d42 | 111 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ |
151c3ec0 | 112 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
016e0d42 ILT |
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 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
117 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
118 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
119 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
120 | }; | |
121 | ||
122 | ||
123 | /* | |
fecd2382 RP |
124 | * In: a character. |
125 | * Out: 1 if this character ends a line. | |
126 | */ | |
127 | #define _ (0) | |
016e0d42 ILT |
128 | char is_end_of_line[256] = |
129 | { | |
fecd2382 | 130 | #ifdef CR_EOL |
d72d8c59 | 131 | 99, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */ |
fecd2382 | 132 | #else |
d72d8c59 | 133 | 99, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */ |
fecd2382 | 134 | #endif |
016e0d42 | 135 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
40324362 KR |
136 | #ifdef TC_HPPA |
137 | _,99, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* _!"#$%&'()*+,-./ */ | |
138 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* 0123456789:;<=>? */ | |
139 | #else | |
016e0d42 ILT |
140 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
141 | _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */ | |
40324362 | 142 | #endif |
016e0d42 ILT |
143 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
144 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
145 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
146 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
147 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
148 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
149 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
150 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
151 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
152 | }; | |
fecd2382 RP |
153 | #undef _ |
154 | ||
016e0d42 ILT |
155 | /* Functions private to this file. */ |
156 | ||
157 | static char *buffer; /* 1st char of each buffer of lines is here. */ | |
158 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
fecd2382 | 159 | |
d428c89f ILT |
160 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 in the |
161 | tc-<CPU>.h file. See the "Porting GAS" section of the internals manual. */ | |
2209b19c | 162 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
9c6d3f66 | 163 | |
9471a360 | 164 | static char *old_buffer; /* JF a hack */ |
016e0d42 ILT |
165 | static char *old_input; |
166 | static char *old_limit; | |
fecd2382 | 167 | |
d341ae3f | 168 | /* Variables for handling include file directory table. */ |
fecd2382 | 169 | |
d341ae3f | 170 | char **include_dirs; /* Table of pointers to directories to |
016e0d42 | 171 | search for .include's */ |
d341ae3f DE |
172 | int include_dir_count; /* How many are in the table */ |
173 | int include_dir_maxlen = 1;/* Length of longest in table */ | |
fecd2382 RP |
174 | |
175 | #ifndef WORKING_DOT_WORD | |
016e0d42 | 176 | struct broken_word *broken_words; |
9471a360 | 177 | int new_broken_words; |
fecd2382 RP |
178 | #endif |
179 | ||
e28c40d7 ILT |
180 | /* The current offset into the absolute section. We don't try to |
181 | build frags in the absolute section, since no data can be stored | |
182 | there. We just keep track of the current offset. */ | |
183 | addressT abs_section_offset; | |
184 | ||
1356d77d ILT |
185 | /* If this line had an MRI style label, it is stored in this variable. |
186 | This is used by some of the MRI pseudo-ops. */ | |
7e047ac2 | 187 | symbolS *line_label; |
1356d77d ILT |
188 | |
189 | /* This global variable is used to support MRI common sections. We | |
190 | translate such sections into a common symbol. This variable is | |
191 | non-NULL when we are in an MRI common section. */ | |
192 | symbolS *mri_common_symbol; | |
193 | ||
286cb27a ILT |
194 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we |
195 | need to align to an even byte boundary unless the next pseudo-op is | |
196 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
197 | may be needed. */ | |
198 | static int mri_pending_align; | |
199 | ||
d341ae3f DE |
200 | #ifndef NO_LISTING |
201 | #ifdef OBJ_ELF | |
202 | /* This variable is set to be non-zero if the next string we see might | |
203 | be the name of the source file in DWARF debugging information. See | |
204 | the comment in emit_expr for the format we look for. */ | |
205 | static int dwarf_file_string; | |
206 | #endif | |
207 | #endif | |
208 | ||
7cd06f44 | 209 | static void cons_worker PARAMS ((int, int)); |
86038ada | 210 | static int scrub_from_string PARAMS ((char **)); |
d428c89f ILT |
211 | static void do_align PARAMS ((int, char *, int, int)); |
212 | static void s_align PARAMS ((int, int)); | |
e28c40d7 ILT |
213 | static int hex_float PARAMS ((int, char *)); |
214 | static void do_org PARAMS ((segT, expressionS *, int)); | |
6ef37255 | 215 | char *demand_copy_string PARAMS ((int *lenP)); |
5ac34ac3 | 216 | static segT get_segmented_expression PARAMS ((expressionS *expP)); |
016e0d42 | 217 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); |
016e0d42 | 218 | static void pobegin PARAMS ((void)); |
7e047ac2 | 219 | static int get_line_sb PARAMS ((sb *)); |
fecd2382 | 220 | \f |
6efd877d | 221 | |
016e0d42 ILT |
222 | void |
223 | read_begin () | |
fecd2382 | 224 | { |
016e0d42 | 225 | const char *p; |
f8701a3f | 226 | |
6efd877d KR |
227 | pobegin (); |
228 | obj_read_begin_hook (); | |
f8701a3f | 229 | |
4380166d KR |
230 | /* Something close -- but not too close -- to a multiple of 1024. |
231 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
6594d6b9 KR |
232 | obstack_begin (¬es, chunksize); |
233 | obstack_begin (&cond_obstack, chunksize); | |
f8701a3f | 234 | |
f8701a3f SC |
235 | /* Use machine dependent syntax */ |
236 | for (p = line_separator_chars; *p; p++) | |
58d4951d | 237 | is_end_of_line[(unsigned char) *p] = 1; |
f8701a3f | 238 | /* Use more. FIXME-SOMEDAY. */ |
1356d77d ILT |
239 | |
240 | if (flag_mri) | |
241 | lex_type['?'] = 3; | |
fecd2382 RP |
242 | } |
243 | \f | |
244 | /* set up pseudo-op tables */ | |
245 | ||
1356d77d | 246 | static struct hash_control *po_hash; |
fecd2382 | 247 | |
016e0d42 | 248 | static const pseudo_typeS potable[] = |
fecd2382 | 249 | { |
6efd877d KR |
250 | {"abort", s_abort, 0}, |
251 | {"align", s_align_ptwo, 0}, | |
252 | {"ascii", stringer, 0}, | |
253 | {"asciz", stringer, 1}, | |
931a8fab | 254 | {"balign", s_align_bytes, 0}, |
4080c270 ILT |
255 | {"balignw", s_align_bytes, -2}, |
256 | {"balignl", s_align_bytes, -4}, | |
f8701a3f | 257 | /* block */ |
6efd877d KR |
258 | {"byte", cons, 1}, |
259 | {"comm", s_comm, 0}, | |
1356d77d ILT |
260 | {"common", s_mri_common, 0}, |
261 | {"common.s", s_mri_common, 1}, | |
6efd877d | 262 | {"data", s_data, 0}, |
1356d77d ILT |
263 | {"dc", cons, 2}, |
264 | {"dc.b", cons, 1}, | |
265 | {"dc.d", float_cons, 'd'}, | |
266 | {"dc.l", cons, 4}, | |
267 | {"dc.s", float_cons, 'f'}, | |
268 | {"dc.w", cons, 2}, | |
269 | {"dc.x", float_cons, 'x'}, | |
e28c40d7 ILT |
270 | {"dcb", s_space, 2}, |
271 | {"dcb.b", s_space, 1}, | |
272 | {"dcb.d", s_float_space, 'd'}, | |
273 | {"dcb.l", s_space, 4}, | |
274 | {"dcb.s", s_float_space, 'f'}, | |
275 | {"dcb.w", s_space, 2}, | |
276 | {"dcb.x", s_float_space, 'x'}, | |
1356d77d ILT |
277 | {"ds", s_space, 2}, |
278 | {"ds.b", s_space, 1}, | |
e28c40d7 | 279 | {"ds.d", s_space, 8}, |
1356d77d | 280 | {"ds.l", s_space, 4}, |
e28c40d7 ILT |
281 | {"ds.p", s_space, 12}, |
282 | {"ds.s", s_space, 4}, | |
1356d77d | 283 | {"ds.w", s_space, 2}, |
e28c40d7 | 284 | {"ds.x", s_space, 12}, |
42ac8fa8 | 285 | {"debug", s_ignore, 0}, |
604633ae | 286 | #ifdef S_SET_DESC |
4064305e | 287 | {"desc", s_desc, 0}, |
604633ae | 288 | #endif |
f8701a3f | 289 | /* dim */ |
6efd877d | 290 | {"double", float_cons, 'd'}, |
f8701a3f | 291 | /* dsect */ |
6efd877d KR |
292 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
293 | {"else", s_else, 0}, | |
e28c40d7 | 294 | {"elsec", s_else, 0}, |
6efd877d | 295 | {"end", s_end, 0}, |
e28c40d7 | 296 | {"endc", s_endif, 0}, |
6efd877d | 297 | {"endif", s_endif, 0}, |
f8701a3f | 298 | /* endef */ |
6efd877d | 299 | {"equ", s_set, 0}, |
cd924033 | 300 | {"equiv", s_set, 1}, |
42ac8fa8 | 301 | {"err", s_err, 0}, |
7e047ac2 | 302 | {"exitm", s_mexit, 0}, |
f8701a3f | 303 | /* extend */ |
6efd877d | 304 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
9a7d824a ILT |
305 | {"appfile", s_app_file, 1}, |
306 | {"appline", s_app_line, 0}, | |
e28c40d7 | 307 | {"fail", s_fail, 0}, |
6efd877d KR |
308 | {"file", s_app_file, 0}, |
309 | {"fill", s_fill, 0}, | |
310 | {"float", float_cons, 'f'}, | |
e28c40d7 | 311 | {"format", s_ignore, 0}, |
6efd877d KR |
312 | {"global", s_globl, 0}, |
313 | {"globl", s_globl, 0}, | |
314 | {"hword", cons, 2}, | |
e28c40d7 | 315 | {"if", s_if, (int) O_ne}, |
7e047ac2 | 316 | {"ifc", s_ifc, 0}, |
6efd877d | 317 | {"ifdef", s_ifdef, 0}, |
e28c40d7 | 318 | {"ifeq", s_if, (int) O_eq}, |
6efd877d | 319 | {"ifeqs", s_ifeqs, 0}, |
e28c40d7 ILT |
320 | {"ifge", s_if, (int) O_ge}, |
321 | {"ifgt", s_if, (int) O_gt}, | |
322 | {"ifle", s_if, (int) O_le}, | |
323 | {"iflt", s_if, (int) O_lt}, | |
7e047ac2 | 324 | {"ifnc", s_ifc, 1}, |
6efd877d | 325 | {"ifndef", s_ifdef, 1}, |
e28c40d7 | 326 | {"ifne", s_if, (int) O_ne}, |
6efd877d KR |
327 | {"ifnes", s_ifeqs, 1}, |
328 | {"ifnotdef", s_ifdef, 1}, | |
329 | {"include", s_include, 0}, | |
330 | {"int", cons, 4}, | |
7e047ac2 | 331 | {"irp", s_irp, 0}, |
42ac8fa8 | 332 | {"irep", s_irp, 0}, |
7e047ac2 | 333 | {"irpc", s_irp, 1}, |
42ac8fa8 | 334 | {"irepc", s_irp, 1}, |
6efd877d KR |
335 | {"lcomm", s_lcomm, 0}, |
336 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
7d3741ed | 337 | {"linkonce", s_linkonce, 0}, |
6efd877d | 338 | {"list", listing_list, 1}, /* Turn listing on */ |
e28c40d7 | 339 | {"llen", listing_psize, 1}, |
6efd877d KR |
340 | {"long", cons, 4}, |
341 | {"lsym", s_lsym, 0}, | |
7e047ac2 ILT |
342 | {"macro", s_macro, 0}, |
343 | {"mexit", s_mexit, 0}, | |
20710f1c ILT |
344 | {"mri", s_mri, 0}, |
345 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
cef72a92 | 346 | {"name", s_ignore, 0}, |
e28c40d7 | 347 | {"noformat", s_ignore, 0}, |
6efd877d | 348 | {"nolist", listing_list, 0}, /* Turn listing off */ |
69e077f3 | 349 | {"nopage", listing_nopage, 0}, |
80aab579 | 350 | {"octa", cons, 16}, |
e28c40d7 | 351 | {"offset", s_struct, 0}, |
6efd877d | 352 | {"org", s_org, 0}, |
931a8fab | 353 | {"p2align", s_align_ptwo, 0}, |
4080c270 ILT |
354 | {"p2alignw", s_align_ptwo, -2}, |
355 | {"p2alignl", s_align_ptwo, -4}, | |
69e077f3 ILT |
356 | {"page", listing_eject, 0}, |
357 | {"plen", listing_psize, 0}, | |
42ac8fa8 | 358 | {"print", s_print, 0}, |
6efd877d | 359 | {"psize", listing_psize, 0}, /* set paper size */ |
42ac8fa8 | 360 | {"purgem", s_purgem, 0}, |
80aab579 | 361 | {"quad", cons, 8}, |
42ac8fa8 | 362 | {"rep", s_rept, 0}, |
7e047ac2 | 363 | {"rept", s_rept, 0}, |
86038ada | 364 | {"rva", s_rva, 4}, |
6efd877d | 365 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ |
f8701a3f SC |
366 | /* scl */ |
367 | /* sect */ | |
6efd877d KR |
368 | {"set", s_set, 0}, |
369 | {"short", cons, 2}, | |
370 | {"single", float_cons, 'f'}, | |
f8701a3f | 371 | /* size */ |
6efd877d | 372 | {"space", s_space, 0}, |
adeab39b | 373 | {"skip", s_space, 0}, |
cd924033 | 374 | {"sleb128", s_leb128, 1}, |
e14994d9 | 375 | {"spc", s_ignore, 0}, |
4064305e SS |
376 | {"stabd", s_stab, 'd'}, |
377 | {"stabn", s_stab, 'n'}, | |
378 | {"stabs", s_stab, 's'}, | |
ba71c54d | 379 | {"string", stringer, 1}, |
e28c40d7 | 380 | {"struct", s_struct, 0}, |
f8701a3f | 381 | /* tag */ |
6efd877d | 382 | {"text", s_text, 0}, |
6ef37255 KR |
383 | |
384 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
385 | won't be able to use it for a while -- probably a year or more. | |
386 | But once this has been released, check with gcc maintainers | |
387 | before deleting it or even changing the spelling. */ | |
388 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
389 | /* If we're folding case -- done for some targets, not necessarily | |
390 | all -- the above string in an input file will be converted to | |
391 | this one. Match it either way... */ | |
392 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
393 | ||
6efd877d | 394 | {"title", listing_title, 0}, /* Listing title */ |
e14994d9 | 395 | {"ttl", listing_title, 0}, |
f8701a3f | 396 | /* type */ |
cd924033 | 397 | {"uleb128", s_leb128, 0}, |
f8701a3f SC |
398 | /* use */ |
399 | /* val */ | |
e14994d9 | 400 | {"xcom", s_comm, 0}, |
1356d77d | 401 | {"xdef", s_globl, 0}, |
e14994d9 | 402 | {"xref", s_ignore, 0}, |
4064305e | 403 | {"xstabs", s_xstab, 's'}, |
6efd877d | 404 | {"word", cons, 2}, |
c02fd8dc | 405 | {"zero", s_space, 0}, |
6efd877d | 406 | {NULL} /* end sentinel */ |
fecd2382 RP |
407 | }; |
408 | ||
2209b19c KR |
409 | static int pop_override_ok = 0; |
410 | static const char *pop_table_name; | |
411 | ||
412 | void | |
413 | pop_insert (table) | |
414 | const pseudo_typeS *table; | |
6efd877d | 415 | { |
2209b19c | 416 | const char *errtxt; |
6efd877d | 417 | const pseudo_typeS *pop; |
2209b19c KR |
418 | for (pop = table; pop->poc_name; pop++) |
419 | { | |
420 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
421 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
6594d6b9 KR |
422 | as_fatal ("error constructing %s pseudo-op table: %s", pop_table_name, |
423 | errtxt); | |
2209b19c KR |
424 | } |
425 | } | |
6efd877d | 426 | |
2209b19c KR |
427 | #ifndef md_pop_insert |
428 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
429 | #endif | |
430 | ||
431 | #ifndef obj_pop_insert | |
432 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
433 | #endif | |
434 | ||
435 | static void | |
436 | pobegin () | |
437 | { | |
6efd877d KR |
438 | po_hash = hash_new (); |
439 | ||
440 | /* Do the target-specific pseudo ops. */ | |
2209b19c KR |
441 | pop_table_name = "md"; |
442 | md_pop_insert (); | |
6efd877d KR |
443 | |
444 | /* Now object specific. Skip any that were in the target table. */ | |
2209b19c KR |
445 | pop_table_name = "obj"; |
446 | pop_override_ok = 1; | |
447 | obj_pop_insert (); | |
6efd877d KR |
448 | |
449 | /* Now portable ones. Skip any that we've seen already. */ | |
2209b19c KR |
450 | pop_table_name = "standard"; |
451 | pop_insert (potable); | |
452 | } | |
fecd2382 | 453 | \f |
58d4951d ILT |
454 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
455 | if (ignore_input ()) \ | |
456 | { \ | |
457 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
458 | if (input_line_pointer == buffer_limit) \ | |
459 | break; \ | |
460 | continue; \ | |
f8701a3f | 461 | } |
a39116f1 | 462 | |
fecd2382 | 463 | |
86038ada ILT |
464 | /* This function is used when scrubbing the characters between #APP |
465 | and #NO_APP. */ | |
466 | ||
467 | static char *scrub_string; | |
468 | static char *scrub_string_end; | |
469 | ||
470 | static int | |
471 | scrub_from_string (from) | |
472 | char **from; | |
473 | { | |
474 | int size; | |
475 | ||
476 | *from = scrub_string; | |
477 | size = scrub_string_end - scrub_string; | |
478 | scrub_string = scrub_string_end; | |
479 | return size; | |
480 | } | |
481 | ||
fecd2382 RP |
482 | /* read_a_source_file() |
483 | * | |
484 | * We read the file, putting things into a web that | |
485 | * represents what we have been reading. | |
486 | */ | |
6efd877d KR |
487 | void |
488 | read_a_source_file (name) | |
489 | char *name; | |
fecd2382 | 490 | { |
f8701a3f | 491 | register char c; |
6efd877d | 492 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 493 | register int temp; |
6efd877d | 494 | pseudo_typeS *pop; |
f8701a3f | 495 | |
6efd877d | 496 | buffer = input_scrub_new_file (name); |
f8701a3f | 497 | |
6efd877d | 498 | listing_file (name); |
96e0ff46 | 499 | listing_newline (NULL); |
cd924033 | 500 | register_dependency (name); |
f8701a3f | 501 | |
6efd877d KR |
502 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
503 | { /* We have another line to parse. */ | |
504 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
505 | contin: /* JF this goto is my fault I admit it. |
506 | Someone brave please re-write the whole | |
507 | input section here? Pleeze??? */ | |
6efd877d | 508 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
509 | { |
510 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
511 | |
512 | /* | |
513 | * We now have input_line_pointer->1st char of next line. | |
514 | * If input_line_pointer [-1] == '\n' then we just | |
515 | * scanned another line: so bump line counters. | |
516 | */ | |
d2550c72 | 517 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
6efd877d | 518 | { |
a2a5a4fa KR |
519 | #ifdef md_start_line_hook |
520 | md_start_line_hook (); | |
521 | #endif | |
522 | ||
385ce433 JL |
523 | if (input_line_pointer[-1] == '\n') |
524 | bump_line_counters (); | |
f8701a3f | 525 | |
7e047ac2 ILT |
526 | line_label = NULL; |
527 | ||
cef72a92 | 528 | if (flag_m68k_mri |
1356d77d ILT |
529 | #ifdef LABELS_WITHOUT_COLONS |
530 | || 1 | |
531 | #endif | |
532 | ) | |
6efd877d | 533 | { |
1356d77d ILT |
534 | /* Text at the start of a line must be a label, we |
535 | run down and stick a colon in. */ | |
536 | if (is_name_beginner (*input_line_pointer)) | |
537 | { | |
538 | char *line_start = input_line_pointer; | |
7e047ac2 | 539 | char c; |
8ff75001 | 540 | int mri_line_macro; |
7e047ac2 | 541 | |
d428c89f | 542 | LISTING_NEWLINE (); |
7e047ac2 | 543 | HANDLE_CONDITIONAL_ASSEMBLY (); |
1356d77d | 544 | |
7e047ac2 ILT |
545 | c = get_symbol_end (); |
546 | ||
8ff75001 ILT |
547 | /* In MRI mode, the EQU and MACRO pseudoops must |
548 | be handled specially. */ | |
549 | mri_line_macro = 0; | |
cef72a92 | 550 | if (flag_m68k_mri) |
1356d77d | 551 | { |
7e047ac2 ILT |
552 | char *rest = input_line_pointer + 1; |
553 | ||
554 | if (*rest == ':') | |
555 | ++rest; | |
556 | if (*rest == ' ' || *rest == '\t') | |
557 | ++rest; | |
558 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
559 | || strncasecmp (rest, "SET", 3) == 0) | |
560 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1356d77d | 561 | { |
7e047ac2 | 562 | input_line_pointer = rest + 3; |
d428c89f ILT |
563 | equals (line_start, |
564 | strncasecmp (rest, "SET", 3) == 0); | |
7e047ac2 | 565 | continue; |
1356d77d | 566 | } |
8ff75001 ILT |
567 | if (strncasecmp (rest, "MACRO", 5) == 0 |
568 | && (rest[5] == ' ' | |
569 | || rest[5] == '\t' | |
570 | || is_end_of_line[(unsigned char) rest[5]])) | |
571 | mri_line_macro = 1; | |
1356d77d | 572 | } |
6efd877d | 573 | |
8ff75001 ILT |
574 | /* In MRI mode, we need to handle the MACRO |
575 | pseudo-op specially: we don't want to put the | |
576 | symbol in the symbol table. */ | |
577 | if (! mri_line_macro) | |
578 | line_label = colon (line_start); | |
579 | else | |
580 | line_label = symbol_create (line_start, | |
581 | absolute_section, | |
582 | (valueT) 0, | |
583 | &zero_address_frag); | |
7e047ac2 | 584 | |
1356d77d ILT |
585 | *input_line_pointer = c; |
586 | if (c == ':') | |
587 | input_line_pointer++; | |
588 | } | |
6efd877d | 589 | } |
9471a360 | 590 | } |
f8701a3f | 591 | |
f8701a3f SC |
592 | /* |
593 | * We are at the begining of a line, or similar place. | |
594 | * We expect a well-formed assembler statement. | |
595 | * A "symbol-name:" is a statement. | |
596 | * | |
597 | * Depending on what compiler is used, the order of these tests | |
598 | * may vary to catch most common case 1st. | |
599 | * Each test is independent of all other tests at the (top) level. | |
600 | * PLEASE make a compiler that doesn't use this assembler. | |
601 | * It is crufty to waste a compiler's time encoding things for this | |
602 | * assembler, which then wastes more time decoding it. | |
603 | * (And communicating via (linear) files is silly! | |
604 | * If you must pass stuff, please pass a tree!) | |
605 | */ | |
9471a360 KR |
606 | if ((c = *input_line_pointer++) == '\t' |
607 | || c == ' ' | |
608 | || c == '\f' | |
609 | || c == 0) | |
6efd877d KR |
610 | { |
611 | c = *input_line_pointer++; | |
612 | } | |
613 | know (c != ' '); /* No further leading whitespace. */ | |
96e0ff46 RH |
614 | |
615 | #ifndef NO_LISTING | |
616 | /* If listing is on, and we are expanding a macro, then give | |
617 | the listing code the contents of the expanded line. */ | |
618 | if (listing) | |
619 | { | |
620 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
621 | { | |
622 | char *copy; | |
623 | int len; | |
624 | ||
625 | /* Find the end of the current expanded macro line. */ | |
626 | for (s = input_line_pointer-1; *s ; ++s) | |
627 | if (is_end_of_line[(unsigned char) *s]) | |
628 | break; | |
629 | ||
630 | /* Copy it for safe keeping. Also give an indication of | |
631 | how much macro nesting is involved at this point. */ | |
632 | len = s - (input_line_pointer-1); | |
633 | copy = (char *) xmalloc (len + macro_nest + 2); | |
634 | memset (copy, '>', macro_nest); | |
635 | copy[macro_nest] = ' '; | |
636 | memcpy (copy + macro_nest + 1, input_line_pointer-1, len); | |
637 | copy[macro_nest+1+len] = '\0'; | |
638 | ||
639 | /* Install the line with the listing facility. */ | |
640 | listing_newline (copy); | |
641 | } | |
642 | else | |
643 | listing_newline (NULL); | |
644 | } | |
645 | #endif | |
646 | ||
f8701a3f SC |
647 | /* |
648 | * C is the 1st significant character. | |
649 | * Input_line_pointer points after that character. | |
650 | */ | |
6efd877d | 651 | if (is_name_beginner (c)) |
6ef37255 KR |
652 | { |
653 | /* want user-defined label or pseudo/opcode */ | |
6efd877d KR |
654 | HANDLE_CONDITIONAL_ASSEMBLY (); |
655 | ||
f8701a3f | 656 | s = --input_line_pointer; |
6efd877d | 657 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
658 | /* |
659 | * C is character after symbol. | |
660 | * That character's place in the input line is now '\0'. | |
661 | * S points to the beginning of the symbol. | |
662 | * [In case of pseudo-op, s->'.'.] | |
663 | * Input_line_pointer->'\0' where c was. | |
664 | */ | |
9a7d824a | 665 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d | 666 | { |
cef72a92 | 667 | if (flag_m68k_mri) |
7e047ac2 ILT |
668 | { |
669 | char *rest = input_line_pointer + 1; | |
670 | ||
671 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
672 | ||
673 | if (*rest == ':') | |
674 | ++rest; | |
675 | if (*rest == ' ' || *rest == '\t') | |
676 | ++rest; | |
677 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
678 | || strncasecmp (rest, "SET", 3) == 0) | |
679 | && (rest[3] == ' ' || rest[3] == '\t')) | |
680 | { | |
681 | input_line_pointer = rest + 3; | |
d428c89f | 682 | equals (s, 1); |
7e047ac2 ILT |
683 | continue; |
684 | } | |
685 | } | |
686 | ||
687 | line_label = colon (s); /* user-defined label */ | |
6efd877d | 688 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ |
f8701a3f | 689 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
690 | SKIP_WHITESPACE (); |
691 | ||
f8701a3f | 692 | |
6efd877d | 693 | } |
4064305e | 694 | else if (c == '=' |
a6b200da ILT |
695 | || ((c == ' ' || c == '\t') |
696 | && input_line_pointer[1] == '=' | |
4064305e SS |
697 | #ifdef TC_EQUAL_IN_INSN |
698 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
699 | #endif | |
700 | )) | |
9c6d3f66 | 701 | { |
d428c89f | 702 | equals (s, 1); |
6efd877d KR |
703 | demand_empty_rest_of_line (); |
704 | } | |
705 | else | |
706 | { /* expect pseudo-op or machine instruction */ | |
8ff6f40e ILT |
707 | pop = NULL; |
708 | ||
d4c8cbd8 JL |
709 | #define IGNORE_OPCODE_CASE |
710 | #ifdef IGNORE_OPCODE_CASE | |
711 | { | |
712 | char *s2 = s; | |
713 | while (*s2) | |
714 | { | |
715 | if (isupper (*s2)) | |
716 | *s2 = tolower (*s2); | |
717 | s2++; | |
718 | } | |
719 | } | |
720 | #endif | |
721 | ||
cef72a92 | 722 | if (flag_m68k_mri |
8ff6f40e | 723 | #ifdef NO_PSEUDO_DOT |
1356d77d | 724 | || 1 |
8ff6f40e | 725 | #endif |
1356d77d ILT |
726 | ) |
727 | { | |
728 | /* The MRI assembler and the m88k use pseudo-ops | |
729 | without a period. */ | |
730 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
731 | if (pop != NULL && pop->poc_handler == NULL) | |
732 | pop = NULL; | |
733 | } | |
8ff6f40e | 734 | |
7e047ac2 | 735 | if (pop != NULL |
cef72a92 | 736 | || (! flag_m68k_mri && *s == '.')) |
6efd877d KR |
737 | { |
738 | /* | |
9471a360 KR |
739 | * PSEUDO - OP. |
740 | * | |
741 | * WARNING: c has next char, which may be end-of-line. | |
742 | * We lookup the pseudo-op table with s+1 because we | |
743 | * already know that the pseudo-op begins with a '.'. | |
744 | */ | |
6efd877d | 745 | |
8ff6f40e ILT |
746 | if (pop == NULL) |
747 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d | 748 | |
286cb27a ILT |
749 | /* In MRI mode, we may need to insert an |
750 | automatic alignment directive. What a hack | |
751 | this is. */ | |
752 | if (mri_pending_align | |
753 | && (pop == NULL | |
754 | || ! ((pop->poc_handler == cons | |
755 | && pop->poc_val == 1) | |
756 | || (pop->poc_handler == s_space | |
a986926b ILT |
757 | && pop->poc_val == 1) |
758 | #ifdef tc_conditional_pseudoop | |
759 | || tc_conditional_pseudoop (pop) | |
760 | #endif | |
761 | || pop->poc_handler == s_if | |
762 | || pop->poc_handler == s_ifdef | |
763 | || pop->poc_handler == s_ifc | |
764 | || pop->poc_handler == s_ifeqs | |
765 | || pop->poc_handler == s_else | |
a75abb6f ILT |
766 | || pop->poc_handler == s_endif |
767 | || pop->poc_handler == s_globl | |
768 | || pop->poc_handler == s_ignore))) | |
286cb27a | 769 | { |
d428c89f | 770 | do_align (1, (char *) NULL, 0, 0); |
286cb27a | 771 | mri_pending_align = 0; |
a6b200da ILT |
772 | if (line_label != NULL) |
773 | { | |
774 | line_label->sy_frag = frag_now; | |
775 | S_SET_VALUE (line_label, frag_now_fix ()); | |
776 | } | |
286cb27a ILT |
777 | } |
778 | ||
6efd877d | 779 | /* Print the error msg now, while we still can */ |
8ff6f40e | 780 | if (pop == NULL) |
6efd877d KR |
781 | { |
782 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 783 | *input_line_pointer = c; |
6efd877d | 784 | s_ignore (0); |
46b81190 | 785 | continue; |
6efd877d KR |
786 | } |
787 | ||
788 | /* Put it back for error messages etc. */ | |
789 | *input_line_pointer = c; | |
9c6d3f66 KR |
790 | /* The following skip of whitespace is compulsory. |
791 | A well shaped space is sometimes all that separates | |
792 | keyword from operands. */ | |
6efd877d | 793 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 794 | input_line_pointer++; |
6efd877d | 795 | /* |
9471a360 KR |
796 | * Input_line is restored. |
797 | * Input_line_pointer->1st non-blank char | |
798 | * after pseudo-operation. | |
799 | */ | |
46b81190 | 800 | (*pop->poc_handler) (pop->poc_val); |
e28c40d7 ILT |
801 | |
802 | /* If that was .end, just get out now. */ | |
803 | if (pop->poc_handler == s_end) | |
804 | goto quit; | |
6efd877d KR |
805 | } |
806 | else | |
20868ec6 | 807 | { |
4026c122 ILT |
808 | int inquote = 0; |
809 | ||
6efd877d KR |
810 | /* WARNING: c has char, which may be end-of-line. */ |
811 | /* Also: input_line_pointer->`\0` where c was. */ | |
812 | *input_line_pointer = c; | |
58d4951d | 813 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4026c122 | 814 | || inquote |
4064305e SS |
815 | #ifdef TC_EOL_IN_INSN |
816 | || TC_EOL_IN_INSN (input_line_pointer) | |
817 | #endif | |
818 | ) | |
6efd877d | 819 | { |
cef72a92 | 820 | if (flag_m68k_mri && *input_line_pointer == '\'') |
4026c122 | 821 | inquote = ! inquote; |
6efd877d KR |
822 | input_line_pointer++; |
823 | } | |
f8701a3f | 824 | |
6efd877d KR |
825 | c = *input_line_pointer; |
826 | *input_line_pointer = '\0'; | |
f8701a3f | 827 | |
cd924033 ILT |
828 | if (debug_type == DEBUG_STABS) |
829 | stabs_generate_asm_lineno (); | |
830 | ||
326d16ca | 831 | #ifdef OBJ_GENERATE_ASM_LINENO |
cd924033 ILT |
832 | #ifdef ECOFF_DEBUGGING |
833 | /* ECOFF assemblers automatically generate | |
834 | debugging information. FIXME: This should | |
835 | probably be handled elsewhere. */ | |
836 | if (debug_type == DEBUG_NONE) | |
326d16ca | 837 | { |
cd924033 ILT |
838 | if (ecoff_no_current_file ()) |
839 | debug_type = DEBUG_ECOFF; | |
326d16ca | 840 | } |
cd924033 ILT |
841 | |
842 | if (debug_type == DEBUG_ECOFF) | |
f10a96cb | 843 | { |
1b434ced ILT |
844 | unsigned int lineno; |
845 | char *s; | |
846 | ||
daad3bbf | 847 | as_where (&s, &lineno); |
326d16ca | 848 | OBJ_GENERATE_ASM_LINENO (s, lineno); |
cd924033 ILT |
849 | } |
850 | #endif | |
daad3bbf KH |
851 | #endif |
852 | ||
7e047ac2 ILT |
853 | if (macro_defined) |
854 | { | |
855 | sb out; | |
856 | const char *err; | |
857 | ||
858 | if (check_macro (s, &out, '\0', &err)) | |
859 | { | |
860 | if (err != NULL) | |
861 | as_bad (err); | |
862 | *input_line_pointer++ = c; | |
863 | input_scrub_include_sb (&out, | |
864 | input_line_pointer); | |
865 | sb_kill (&out); | |
866 | buffer_limit = | |
867 | input_scrub_next_buffer (&input_line_pointer); | |
868 | continue; | |
869 | } | |
870 | } | |
871 | ||
20868ec6 ILT |
872 | if (mri_pending_align) |
873 | { | |
d428c89f | 874 | do_align (1, (char *) NULL, 0, 0); |
20868ec6 | 875 | mri_pending_align = 0; |
a6b200da ILT |
876 | if (line_label != NULL) |
877 | { | |
878 | line_label->sy_frag = frag_now; | |
879 | S_SET_VALUE (line_label, frag_now_fix ()); | |
880 | } | |
20868ec6 ILT |
881 | } |
882 | ||
6efd877d | 883 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 884 | |
6efd877d | 885 | *input_line_pointer++ = c; |
f8701a3f | 886 | |
d4c8cbd8 JL |
887 | /* We resume loop AFTER the end-of-line from |
888 | this instruction. */ | |
6efd877d | 889 | } /* if (*s=='.') */ |
6efd877d | 890 | } /* if c==':' */ |
f8701a3f | 891 | continue; |
6efd877d | 892 | } /* if (is_name_beginner(c) */ |
f8701a3f | 893 | |
f8701a3f | 894 | |
d4c8cbd8 | 895 | /* Empty statement? */ |
58d4951d | 896 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 897 | continue; |
6efd877d | 898 | |
9777b772 KR |
899 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) |
900 | && isdigit (c)) | |
d4c8cbd8 JL |
901 | { |
902 | /* local label ("4:") */ | |
6efd877d KR |
903 | char *backup = input_line_pointer; |
904 | ||
905 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
906 | ||
907 | temp = c - '0'; | |
908 | ||
909 | while (isdigit (*input_line_pointer)) | |
910 | { | |
911 | temp = (temp * 10) + *input_line_pointer - '0'; | |
912 | ++input_line_pointer; | |
913 | } /* read the whole number */ | |
914 | ||
9777b772 KR |
915 | if (LOCAL_LABELS_DOLLAR |
916 | && *input_line_pointer == '$' | |
6efd877d KR |
917 | && *(input_line_pointer + 1) == ':') |
918 | { | |
919 | input_line_pointer += 2; | |
920 | ||
921 | if (dollar_label_defined (temp)) | |
922 | { | |
923 | as_fatal ("label \"%d$\" redefined", temp); | |
924 | } | |
925 | ||
926 | define_dollar_label (temp); | |
927 | colon (dollar_label_name (temp, 0)); | |
928 | continue; | |
929 | } | |
6efd877d | 930 | |
9777b772 KR |
931 | if (LOCAL_LABELS_FB |
932 | && *input_line_pointer++ == ':') | |
6efd877d KR |
933 | { |
934 | fb_label_instance_inc (temp); | |
935 | colon (fb_label_name (temp, 0)); | |
936 | continue; | |
937 | } | |
6efd877d KR |
938 | |
939 | input_line_pointer = backup; | |
940 | } /* local label ("4:") */ | |
f8701a3f | 941 | |
6efd877d KR |
942 | if (c && strchr (line_comment_chars, c)) |
943 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
944 | char *ends; |
945 | char *new_buf; | |
946 | char *new_tmp; | |
604633ae | 947 | unsigned int new_length; |
f8701a3f | 948 | char *tmp_buf = 0; |
6efd877d KR |
949 | |
950 | bump_line_counters (); | |
951 | s = input_line_pointer; | |
952 | if (strncmp (s, "APP\n", 4)) | |
953 | continue; /* We ignore it */ | |
954 | s += 4; | |
955 | ||
956 | ends = strstr (s, "#NO_APP\n"); | |
957 | ||
958 | if (!ends) | |
959 | { | |
604633ae ILT |
960 | unsigned int tmp_len; |
961 | unsigned int num; | |
6efd877d | 962 | |
f8701a3f SC |
963 | /* The end of the #APP wasn't in this buffer. We |
964 | keep reading in buffers until we find the #NO_APP | |
965 | that goes with this #APP There is one. The specs | |
966 | guarentee it. . . */ | |
6efd877d | 967 | tmp_len = buffer_limit - s; |
85825401 | 968 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 969 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
970 | do |
971 | { | |
972 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 973 | if (!new_tmp) |
6efd877d | 974 | break; |
f8701a3f | 975 | else |
6efd877d | 976 | buffer_limit = new_tmp; |
f8701a3f | 977 | input_line_pointer = buffer; |
6efd877d | 978 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 979 | if (ends) |
6efd877d | 980 | num = ends - buffer; |
f8701a3f | 981 | else |
6efd877d KR |
982 | num = buffer_limit - buffer; |
983 | ||
984 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
9eb5f4b8 | 985 | memcpy (tmp_buf + tmp_len, buffer, num); |
6efd877d KR |
986 | tmp_len += num; |
987 | } | |
988 | while (!ends); | |
989 | ||
990 | input_line_pointer = ends ? ends + 8 : NULL; | |
991 | ||
992 | s = tmp_buf; | |
993 | ends = s + tmp_len; | |
994 | ||
995 | } | |
996 | else | |
997 | { | |
998 | input_line_pointer = ends + 8; | |
999 | } | |
6efd877d KR |
1000 | |
1001 | scrub_string = s; | |
86038ada ILT |
1002 | scrub_string_end = ends; |
1003 | ||
1004 | new_length = ends - s; | |
1005 | new_buf = (char *) xmalloc (new_length); | |
1006 | new_tmp = new_buf; | |
6efd877d KR |
1007 | for (;;) |
1008 | { | |
86038ada ILT |
1009 | int space; |
1010 | int size; | |
f8701a3f | 1011 | |
86038ada ILT |
1012 | space = (new_buf + new_length) - new_tmp; |
1013 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1014 | ||
1015 | if (size < space) | |
6efd877d | 1016 | { |
86038ada ILT |
1017 | new_tmp += size; |
1018 | break; | |
f8701a3f | 1019 | } |
86038ada ILT |
1020 | |
1021 | new_buf = xrealloc (new_buf, new_length + 100); | |
1022 | new_tmp = new_buf + new_length; | |
1023 | new_length += 100; | |
fecd2382 | 1024 | } |
f8701a3f SC |
1025 | |
1026 | if (tmp_buf) | |
6efd877d KR |
1027 | free (tmp_buf); |
1028 | old_buffer = buffer; | |
1029 | old_input = input_line_pointer; | |
1030 | old_limit = buffer_limit; | |
1031 | buffer = new_buf; | |
1032 | input_line_pointer = new_buf; | |
1033 | buffer_limit = new_tmp; | |
f8701a3f SC |
1034 | continue; |
1035 | } | |
1036 | ||
6efd877d | 1037 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f | 1038 | |
cef72a92 ILT |
1039 | #ifdef tc_unrecognized_line |
1040 | if (tc_unrecognized_line (c)) | |
1041 | continue; | |
1042 | #endif | |
1043 | ||
f8701a3f SC |
1044 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ |
1045 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
1046 | ignore_rest_of_line (); |
1047 | } /* while (input_line_pointer<buffer_limit) */ | |
a2a5a4fa KR |
1048 | |
1049 | #ifdef md_after_pass_hook | |
1050 | md_after_pass_hook (); | |
1051 | #endif | |
1052 | ||
6efd877d KR |
1053 | if (old_buffer) |
1054 | { | |
86038ada | 1055 | free (buffer); |
6efd877d KR |
1056 | bump_line_counters (); |
1057 | if (old_input != 0) | |
1058 | { | |
1059 | buffer = old_buffer; | |
1060 | input_line_pointer = old_input; | |
1061 | buffer_limit = old_limit; | |
f8701a3f SC |
1062 | old_buffer = 0; |
1063 | goto contin; | |
1064 | } | |
1065 | } | |
6efd877d | 1066 | } /* while (more buffers to scan) */ |
f8701a3f | 1067 | |
e28c40d7 | 1068 | quit: |
20868ec6 ILT |
1069 | |
1070 | #ifdef md_cleanup | |
1071 | md_cleanup(); | |
1072 | #endif | |
e28c40d7 | 1073 | input_scrub_close (); /* Close the input file */ |
4075afe1 | 1074 | } |
fecd2382 | 1075 | |
18c9057f ILT |
1076 | /* For most MRI pseudo-ops, the line actually ends at the first |
1077 | nonquoted space. This function looks for that point, stuffs a null | |
1078 | in, and sets *STOPCP to the character that used to be there, and | |
42ac8fa8 ILT |
1079 | returns the location. |
1080 | ||
1081 | Until I hear otherwise, I am going to assume that this is only true | |
1082 | for the m68k MRI assembler. */ | |
18c9057f ILT |
1083 | |
1084 | char * | |
1085 | mri_comment_field (stopcp) | |
1086 | char *stopcp; | |
1087 | { | |
42ac8fa8 ILT |
1088 | #ifdef TC_M68K |
1089 | ||
18c9057f ILT |
1090 | char *s; |
1091 | int inquote = 0; | |
1092 | ||
cef72a92 | 1093 | know (flag_m68k_mri); |
18c9057f ILT |
1094 | |
1095 | for (s = input_line_pointer; | |
1096 | ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') | |
1097 | || inquote); | |
1098 | s++) | |
1099 | { | |
1100 | if (*s == '\'') | |
1101 | inquote = ! inquote; | |
1102 | } | |
1103 | *stopcp = *s; | |
1104 | *s = '\0'; | |
1105 | return s; | |
42ac8fa8 ILT |
1106 | |
1107 | #else | |
1108 | ||
1109 | char *s; | |
1110 | ||
1111 | for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++) | |
1112 | ; | |
1113 | *stopcp = *s; | |
1114 | *s = '\0'; | |
1115 | return s; | |
1116 | ||
1117 | #endif | |
1118 | ||
18c9057f ILT |
1119 | } |
1120 | ||
1121 | /* Skip to the end of an MRI comment field. */ | |
1122 | ||
1123 | void | |
1124 | mri_comment_end (stop, stopc) | |
1125 | char *stop; | |
1126 | int stopc; | |
1127 | { | |
1128 | know (flag_mri); | |
1129 | ||
1130 | input_line_pointer = stop; | |
1131 | *stop = stopc; | |
1132 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1133 | ++input_line_pointer; | |
1134 | } | |
1135 | ||
6efd877d | 1136 | void |
604633ae ILT |
1137 | s_abort (ignore) |
1138 | int ignore; | |
6efd877d KR |
1139 | { |
1140 | as_fatal (".abort detected. Abandoning ship."); | |
4075afe1 KR |
1141 | } |
1142 | ||
d428c89f ILT |
1143 | /* Guts of .align directive. N is the power of two to which to align. |
1144 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1145 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1146 | the maximum number of characters to skip when doing the alignment, | |
1147 | or 0 if there is no maximum. */ | |
1148 | ||
4075afe1 | 1149 | static void |
d428c89f | 1150 | do_align (n, fill, len, max) |
4075afe1 KR |
1151 | int n; |
1152 | char *fill; | |
71dd3c40 | 1153 | int len; |
d428c89f | 1154 | int max; |
4075afe1 | 1155 | { |
d428c89f ILT |
1156 | char default_fill; |
1157 | ||
4075afe1 | 1158 | #ifdef md_do_align |
d428c89f | 1159 | md_do_align (n, fill, len, max, just_record_alignment); |
4075afe1 | 1160 | #endif |
4075afe1 | 1161 | |
d428c89f ILT |
1162 | if (fill == NULL) |
1163 | { | |
cd924033 ILT |
1164 | int maybe_text; |
1165 | ||
1166 | #ifdef BFD_ASSEMBLER | |
1167 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) | |
1168 | maybe_text = 1; | |
1169 | else | |
1170 | maybe_text = 0; | |
1171 | #else | |
4075afe1 | 1172 | if (now_seg != data_section && now_seg != bss_section) |
cd924033 ILT |
1173 | maybe_text = 1; |
1174 | else | |
1175 | maybe_text = 0; | |
1176 | #endif | |
1177 | ||
1178 | if (maybe_text) | |
d428c89f | 1179 | default_fill = NOP_OPCODE; |
4075afe1 | 1180 | else |
d428c89f ILT |
1181 | default_fill = 0; |
1182 | fill = &default_fill; | |
71dd3c40 | 1183 | len = 1; |
4075afe1 | 1184 | } |
71dd3c40 | 1185 | |
4075afe1 | 1186 | /* Only make a frag if we HAVE to. . . */ |
d428c89f | 1187 | if (n != 0 && !need_pass_2) |
71dd3c40 ILT |
1188 | { |
1189 | if (len <= 1) | |
d428c89f | 1190 | frag_align (n, *fill, max); |
71dd3c40 | 1191 | else |
d428c89f | 1192 | frag_align_pattern (n, fill, len, max); |
71dd3c40 | 1193 | } |
4075afe1 | 1194 | |
c02fd8dc | 1195 | #ifdef md_do_align |
4075afe1 | 1196 | just_record_alignment: |
c02fd8dc ILT |
1197 | #endif |
1198 | ||
4075afe1 KR |
1199 | record_alignment (now_seg, n); |
1200 | } | |
fecd2382 | 1201 | |
d428c89f ILT |
1202 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1203 | (in bytes). A negative ARG is the negative of the length of the | |
1204 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1205 | interpreted as the byte boundary, rather than the power of 2. */ | |
1206 | ||
1207 | static void | |
1208 | s_align (arg, bytes_p) | |
6efd877d | 1209 | int arg; |
d428c89f | 1210 | int bytes_p; |
fecd2382 | 1211 | { |
d428c89f | 1212 | register unsigned int align; |
18c9057f ILT |
1213 | char *stop = NULL; |
1214 | char stopc; | |
d428c89f ILT |
1215 | offsetT fill = 0; |
1216 | int max; | |
1217 | int fill_p; | |
18c9057f ILT |
1218 | |
1219 | if (flag_mri) | |
1220 | stop = mri_comment_field (&stopc); | |
f8701a3f | 1221 | |
58d4951d | 1222 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
4080c270 ILT |
1223 | { |
1224 | if (arg < 0) | |
d428c89f | 1225 | align = 0; |
4080c270 | 1226 | else |
d428c89f | 1227 | align = arg; /* Default value from pseudo-op table */ |
4080c270 | 1228 | } |
6efd877d | 1229 | else |
6efd877d | 1230 | { |
d428c89f ILT |
1231 | align = get_absolute_expression (); |
1232 | SKIP_WHITESPACE (); | |
f8701a3f SC |
1233 | } |
1234 | ||
d428c89f | 1235 | if (bytes_p) |
6efd877d | 1236 | { |
d428c89f ILT |
1237 | /* Convert to a power of 2. */ |
1238 | if (align != 0) | |
1239 | { | |
1240 | unsigned int i; | |
1241 | ||
1242 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1243 | ; | |
1244 | if (align != 1) | |
1245 | as_bad ("Alignment not a power of 2"); | |
1246 | align = i; | |
1247 | } | |
f8701a3f | 1248 | } |
f8701a3f | 1249 | |
d428c89f | 1250 | if (align > 15) |
6efd877d | 1251 | { |
d428c89f ILT |
1252 | align = 15; |
1253 | as_bad ("Alignment too large: %u assumed", align); | |
1254 | } | |
71dd3c40 | 1255 | |
d428c89f ILT |
1256 | if (*input_line_pointer != ',') |
1257 | { | |
1258 | fill_p = 0; | |
1259 | max = 0; | |
1260 | } | |
1261 | else | |
1262 | { | |
1263 | ++input_line_pointer; | |
1264 | if (*input_line_pointer == ',') | |
1265 | fill_p = 0; | |
4080c270 | 1266 | else |
71dd3c40 | 1267 | { |
d428c89f ILT |
1268 | fill = get_absolute_expression (); |
1269 | SKIP_WHITESPACE (); | |
1270 | fill_p = 1; | |
71dd3c40 | 1271 | } |
d428c89f ILT |
1272 | |
1273 | if (*input_line_pointer != ',') | |
1274 | max = 0; | |
71dd3c40 ILT |
1275 | else |
1276 | { | |
d428c89f ILT |
1277 | ++input_line_pointer; |
1278 | max = get_absolute_expression (); | |
71dd3c40 | 1279 | } |
f8701a3f | 1280 | } |
d428c89f ILT |
1281 | |
1282 | if (! fill_p) | |
71dd3c40 | 1283 | { |
4080c270 | 1284 | if (arg < 0) |
71dd3c40 | 1285 | as_warn ("expected fill pattern missing"); |
d428c89f | 1286 | do_align (align, (char *) NULL, 0, max); |
6efd877d | 1287 | } |
d428c89f | 1288 | else |
6efd877d | 1289 | { |
d428c89f | 1290 | int fill_len; |
71dd3c40 | 1291 | |
4080c270 | 1292 | if (arg >= 0) |
d428c89f | 1293 | fill_len = 1; |
4080c270 | 1294 | else |
d428c89f ILT |
1295 | fill_len = - arg; |
1296 | if (fill_len <= 1) | |
71dd3c40 | 1297 | { |
d428c89f ILT |
1298 | char fill_char; |
1299 | ||
1300 | fill_char = fill; | |
1301 | do_align (align, &fill_char, fill_len, max); | |
71dd3c40 ILT |
1302 | } |
1303 | else | |
1304 | { | |
1305 | char ab[16]; | |
1306 | ||
d428c89f | 1307 | if (fill_len > sizeof ab) |
71dd3c40 | 1308 | abort (); |
d428c89f ILT |
1309 | md_number_to_chars (ab, fill, fill_len); |
1310 | do_align (align, ab, fill_len, max); | |
71dd3c40 | 1311 | } |
6efd877d | 1312 | } |
6efd877d | 1313 | |
18c9057f ILT |
1314 | if (flag_mri) |
1315 | mri_comment_end (stop, stopc); | |
1316 | ||
6efd877d | 1317 | demand_empty_rest_of_line (); |
4075afe1 | 1318 | } |
6efd877d | 1319 | |
d428c89f ILT |
1320 | /* Handle the .align pseudo-op on machines where ".align 4" means |
1321 | align to a 4 byte boundary. */ | |
1322 | ||
1323 | void | |
1324 | s_align_bytes (arg) | |
1325 | int arg; | |
1326 | { | |
1327 | s_align (arg, 1); | |
1328 | } | |
1329 | ||
d72d8c59 | 1330 | /* Handle the .align pseudo-op on machines where ".align 4" means align |
d428c89f ILT |
1331 | to a 2**4 boundary. */ |
1332 | ||
1333 | void | |
1334 | s_align_ptwo (arg) | |
1335 | int arg; | |
1336 | { | |
1337 | s_align (arg, 0); | |
1338 | } | |
1339 | ||
6efd877d | 1340 | void |
604633ae ILT |
1341 | s_comm (ignore) |
1342 | int ignore; | |
6efd877d KR |
1343 | { |
1344 | register char *name; | |
1345 | register char c; | |
1346 | register char *p; | |
58d4951d | 1347 | offsetT temp; |
6efd877d | 1348 | register symbolS *symbolP; |
18c9057f ILT |
1349 | char *stop = NULL; |
1350 | char stopc; | |
1351 | ||
1352 | if (flag_mri) | |
1353 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1354 | |
1355 | name = input_line_pointer; | |
1356 | c = get_symbol_end (); | |
1357 | /* just after name is now '\0' */ | |
1358 | p = input_line_pointer; | |
1359 | *p = c; | |
1360 | SKIP_WHITESPACE (); | |
1361 | if (*input_line_pointer != ',') | |
1362 | { | |
1363 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
18c9057f ILT |
1364 | if (flag_mri) |
1365 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1366 | ignore_rest_of_line (); |
1367 | return; | |
1368 | } | |
1369 | input_line_pointer++; /* skip ',' */ | |
1370 | if ((temp = get_absolute_expression ()) < 0) | |
1371 | { | |
58d4951d | 1372 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
18c9057f ILT |
1373 | if (flag_mri) |
1374 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1375 | ignore_rest_of_line (); |
1376 | return; | |
1377 | } | |
1378 | *p = 0; | |
1379 | symbolP = symbol_find_or_make (name); | |
1380 | *p = c; | |
cd924033 | 1381 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) |
6efd877d | 1382 | { |
6ef37255 KR |
1383 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1384 | S_GET_NAME (symbolP)); | |
18c9057f ILT |
1385 | if (flag_mri) |
1386 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1387 | ignore_rest_of_line (); |
1388 | return; | |
1389 | } | |
1390 | if (S_GET_VALUE (symbolP)) | |
1391 | { | |
58d4951d ILT |
1392 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
1393 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 1394 | S_GET_NAME (symbolP), |
58d4951d ILT |
1395 | (long) S_GET_VALUE (symbolP), |
1396 | (long) temp); | |
6efd877d KR |
1397 | } |
1398 | else | |
1399 | { | |
58d4951d | 1400 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
1401 | S_SET_EXTERNAL (symbolP); |
1402 | } | |
9471a360 | 1403 | #ifdef OBJ_VMS |
def66e24 DM |
1404 | { |
1405 | extern int flag_one; | |
1406 | if ( (!temp) || !flag_one) | |
1407 | S_GET_OTHER(symbolP) = const_flag; | |
1408 | } | |
9471a360 | 1409 | #endif /* not OBJ_VMS */ |
6efd877d | 1410 | know (symbolP->sy_frag == &zero_address_frag); |
18c9057f ILT |
1411 | |
1412 | if (flag_mri) | |
1413 | mri_comment_end (stop, stopc); | |
1414 | ||
6efd877d KR |
1415 | demand_empty_rest_of_line (); |
1416 | } /* s_comm() */ | |
fecd2382 | 1417 | |
1356d77d ILT |
1418 | /* The MRI COMMON pseudo-op. We handle this by creating a common |
1419 | symbol with the appropriate name. We make s_space do the right | |
1420 | thing by increasing the size. */ | |
1421 | ||
1422 | void | |
1423 | s_mri_common (small) | |
1424 | int small; | |
1425 | { | |
1426 | char *name; | |
1427 | char c; | |
1428 | char *alc = NULL; | |
1429 | symbolS *sym; | |
1430 | offsetT align; | |
18c9057f ILT |
1431 | char *stop = NULL; |
1432 | char stopc; | |
1356d77d ILT |
1433 | |
1434 | if (! flag_mri) | |
1435 | { | |
1436 | s_comm (0); | |
1437 | return; | |
1438 | } | |
1439 | ||
18c9057f ILT |
1440 | stop = mri_comment_field (&stopc); |
1441 | ||
1356d77d ILT |
1442 | SKIP_WHITESPACE (); |
1443 | ||
1444 | name = input_line_pointer; | |
1445 | if (! isdigit ((unsigned char) *name)) | |
1446 | c = get_symbol_end (); | |
1447 | else | |
1448 | { | |
1449 | do | |
1450 | { | |
1451 | ++input_line_pointer; | |
1452 | } | |
1453 | while (isdigit ((unsigned char) *input_line_pointer)); | |
1454 | c = *input_line_pointer; | |
1455 | *input_line_pointer = '\0'; | |
1456 | ||
7e047ac2 | 1457 | if (line_label != NULL) |
1356d77d | 1458 | { |
7e047ac2 | 1459 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) |
1356d77d ILT |
1460 | + (input_line_pointer - name) |
1461 | + 1); | |
7e047ac2 | 1462 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1356d77d ILT |
1463 | name = alc; |
1464 | } | |
1465 | } | |
1466 | ||
1467 | sym = symbol_find_or_make (name); | |
1468 | *input_line_pointer = c; | |
1469 | if (alc != NULL) | |
1470 | free (alc); | |
1471 | ||
1472 | if (*input_line_pointer != ',') | |
1473 | align = 0; | |
1474 | else | |
1475 | { | |
1476 | ++input_line_pointer; | |
1477 | align = get_absolute_expression (); | |
1478 | } | |
1479 | ||
cd924033 | 1480 | if (S_IS_DEFINED (sym) && ! S_IS_COMMON (sym)) |
1356d77d | 1481 | { |
cd924033 ILT |
1482 | as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym)); |
1483 | mri_comment_end (stop, stopc); | |
1484 | ignore_rest_of_line (); | |
1485 | return; | |
1356d77d ILT |
1486 | } |
1487 | ||
1488 | S_SET_EXTERNAL (sym); | |
1489 | mri_common_symbol = sym; | |
1490 | ||
1491 | #ifdef S_SET_ALIGN | |
1492 | if (align != 0) | |
1493 | S_SET_ALIGN (sym, align); | |
1494 | #endif | |
1495 | ||
7e047ac2 | 1496 | if (line_label != NULL) |
1356d77d | 1497 | { |
7e047ac2 ILT |
1498 | line_label->sy_value.X_op = O_symbol; |
1499 | line_label->sy_value.X_add_symbol = sym; | |
1500 | line_label->sy_value.X_add_number = S_GET_VALUE (sym); | |
1501 | line_label->sy_frag = &zero_address_frag; | |
1502 | S_SET_SEGMENT (line_label, expr_section); | |
1356d77d ILT |
1503 | } |
1504 | ||
1505 | /* FIXME: We just ignore the small argument, which distinguishes | |
1506 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1507 | ||
1508 | /* Ignore the type and hptype. */ | |
1509 | if (*input_line_pointer == ',') | |
1510 | input_line_pointer += 2; | |
1511 | if (*input_line_pointer == ',') | |
1512 | input_line_pointer += 2; | |
18c9057f ILT |
1513 | |
1514 | mri_comment_end (stop, stopc); | |
1515 | ||
1356d77d ILT |
1516 | demand_empty_rest_of_line (); |
1517 | } | |
1518 | ||
fecd2382 | 1519 | void |
604633ae ILT |
1520 | s_data (ignore) |
1521 | int ignore; | |
fecd2382 | 1522 | { |
ffffc8fb | 1523 | segT section; |
6efd877d | 1524 | register int temp; |
f8701a3f | 1525 | |
6efd877d | 1526 | temp = get_absolute_expression (); |
def66e24 | 1527 | if (flag_readonly_data_in_text) |
ffffc8fb ILT |
1528 | { |
1529 | section = text_section; | |
1530 | temp += 1000; | |
1531 | } | |
1532 | else | |
1533 | section = data_section; | |
1534 | ||
ffffc8fb | 1535 | subseg_set (section, (subsegT) temp); |
f8701a3f | 1536 | |
9471a360 | 1537 | #ifdef OBJ_VMS |
6efd877d | 1538 | const_flag = 0; |
fecd2382 | 1539 | #endif |
6efd877d | 1540 | demand_empty_rest_of_line (); |
fecd2382 RP |
1541 | } |
1542 | ||
9a7d824a | 1543 | /* Handle the .appfile pseudo-op. This is automatically generated by |
86038ada ILT |
1544 | do_scrub_chars when a preprocessor # line comment is seen with a |
1545 | file name. This default definition may be overridden by the object | |
1546 | or CPU specific pseudo-ops. This function is also the default | |
1547 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1548 | .file. */ | |
9a7d824a | 1549 | |
6efd877d | 1550 | void |
9a7d824a ILT |
1551 | s_app_file (appfile) |
1552 | int appfile; | |
6efd877d KR |
1553 | { |
1554 | register char *s; | |
1555 | int length; | |
f8701a3f | 1556 | |
6efd877d KR |
1557 | /* Some assemblers tolerate immediately following '"' */ |
1558 | if ((s = demand_copy_string (&length)) != 0) | |
1559 | { | |
9a7d824a ILT |
1560 | /* If this is a fake .appfile, a fake newline was inserted into |
1561 | the buffer. Passing -2 to new_logical_line tells it to | |
1562 | account for it. */ | |
08ce71f5 RH |
1563 | int may_omit |
1564 | = (! new_logical_line (s, appfile ? -2 : -1) && appfile); | |
cef72a92 ILT |
1565 | |
1566 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
1567 | backquote. */ | |
1568 | if (flag_m68k_mri | |
1569 | && *input_line_pointer == '\'' | |
1570 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1571 | ++input_line_pointer; | |
1572 | ||
6efd877d | 1573 | demand_empty_rest_of_line (); |
08ce71f5 RH |
1574 | if (! may_omit) |
1575 | { | |
9a7d824a | 1576 | #ifdef LISTING |
08ce71f5 RH |
1577 | if (listing) |
1578 | listing_source_file (s); | |
9a7d824a | 1579 | #endif |
08ce71f5 | 1580 | register_dependency (s); |
2209b19c | 1581 | #ifdef obj_app_file |
08ce71f5 | 1582 | obj_app_file (s); |
40324362 | 1583 | #endif |
08ce71f5 RH |
1584 | } |
1585 | } | |
40324362 | 1586 | } |
fecd2382 | 1587 | |
9a7d824a | 1588 | /* Handle the .appline pseudo-op. This is automatically generated by |
86038ada ILT |
1589 | do_scrub_chars when a preprocessor # line comment is seen. This |
1590 | default definition may be overridden by the object or CPU specific | |
1591 | pseudo-ops. */ | |
9a7d824a ILT |
1592 | |
1593 | void | |
604633ae ILT |
1594 | s_app_line (ignore) |
1595 | int ignore; | |
9a7d824a ILT |
1596 | { |
1597 | int l; | |
1598 | ||
1599 | /* The given number is that of the next line. */ | |
1600 | l = get_absolute_expression () - 1; | |
931a8fab KR |
1601 | if (l < 0) |
1602 | /* Some of the back ends can't deal with non-positive line numbers. | |
1603 | Besides, it's silly. */ | |
1604 | as_warn ("Line numbers must be positive; line number %d rejected.", l+1); | |
1605 | else | |
1606 | { | |
1607 | new_logical_line ((char *) NULL, l); | |
9a7d824a | 1608 | #ifdef LISTING |
931a8fab KR |
1609 | if (listing) |
1610 | listing_source_line (l); | |
9a7d824a | 1611 | #endif |
931a8fab | 1612 | } |
9a7d824a ILT |
1613 | demand_empty_rest_of_line (); |
1614 | } | |
1615 | ||
e28c40d7 ILT |
1616 | /* Handle the .end pseudo-op. Actually, the real work is done in |
1617 | read_a_source_file. */ | |
1618 | ||
1619 | void | |
1620 | s_end (ignore) | |
1621 | int ignore; | |
1622 | { | |
1623 | if (flag_mri) | |
1624 | { | |
1625 | /* The MRI assembler permits the start symbol to follow .end, | |
1626 | but we don't support that. */ | |
1627 | SKIP_WHITESPACE (); | |
18c9057f ILT |
1628 | if (! is_end_of_line[(unsigned char) *input_line_pointer] |
1629 | && *input_line_pointer != '*' | |
1630 | && *input_line_pointer != '!') | |
e28c40d7 ILT |
1631 | as_warn ("start address not supported"); |
1632 | } | |
1633 | } | |
1634 | ||
42ac8fa8 ILT |
1635 | /* Handle the .err pseudo-op. */ |
1636 | ||
1637 | void | |
1638 | s_err (ignore) | |
1639 | int ignore; | |
1640 | { | |
1641 | as_bad (".err encountered"); | |
1642 | demand_empty_rest_of_line (); | |
1643 | } | |
1644 | ||
e28c40d7 ILT |
1645 | /* Handle the MRI fail pseudo-op. */ |
1646 | ||
1647 | void | |
1648 | s_fail (ignore) | |
1649 | int ignore; | |
1650 | { | |
1651 | offsetT temp; | |
18c9057f ILT |
1652 | char *stop = NULL; |
1653 | char stopc; | |
1654 | ||
1655 | if (flag_mri) | |
1656 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
1657 | |
1658 | temp = get_absolute_expression (); | |
1659 | if (temp >= 500) | |
1660 | as_warn (".fail %ld encountered", (long) temp); | |
1661 | else | |
1662 | as_bad (".fail %ld encountered", (long) temp); | |
18c9057f ILT |
1663 | |
1664 | if (flag_mri) | |
1665 | mri_comment_end (stop, stopc); | |
1666 | ||
e28c40d7 ILT |
1667 | demand_empty_rest_of_line (); |
1668 | } | |
1669 | ||
6efd877d | 1670 | void |
604633ae ILT |
1671 | s_fill (ignore) |
1672 | int ignore; | |
6efd877d KR |
1673 | { |
1674 | long temp_repeat = 0; | |
1675 | long temp_size = 1; | |
1676 | register long temp_fill = 0; | |
1677 | char *p; | |
f8701a3f | 1678 | |
624c91d1 KR |
1679 | #ifdef md_flush_pending_output |
1680 | md_flush_pending_output (); | |
1681 | #endif | |
7c2d4011 | 1682 | |
6efd877d KR |
1683 | temp_repeat = get_absolute_expression (); |
1684 | if (*input_line_pointer == ',') | |
1685 | { | |
1686 | input_line_pointer++; | |
1687 | temp_size = get_absolute_expression (); | |
1688 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
1689 | { |
1690 | input_line_pointer++; | |
6efd877d | 1691 | temp_fill = get_absolute_expression (); |
fecd2382 | 1692 | } |
6efd877d | 1693 | } |
c8863a58 | 1694 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 1695 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
1696 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
1697 | { | |
1698 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
1699 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
1700 | } | |
1701 | if (temp_size < 0) | |
1702 | { | |
1703 | as_warn ("Size negative: .fill ignored."); | |
1704 | temp_size = 0; | |
1705 | } | |
1706 | else if (temp_repeat <= 0) | |
1707 | { | |
a69e5977 ILT |
1708 | if (temp_repeat < 0) |
1709 | as_warn ("Repeat < 0, .fill ignored"); | |
6efd877d KR |
1710 | temp_size = 0; |
1711 | } | |
7fd3560a | 1712 | |
6efd877d KR |
1713 | if (temp_size && !need_pass_2) |
1714 | { | |
cd924033 ILT |
1715 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, |
1716 | (relax_substateT) 0, (symbolS *) 0, (offsetT) temp_repeat, | |
1717 | (char *) 0); | |
604633ae | 1718 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
1719 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
1720 | * flavoured AS. The following bizzare behaviour is to be | |
1721 | * compatible with above. I guess they tried to take up to 8 | |
1722 | * bytes from a 4-byte expression and they forgot to sign | |
1723 | * extend. Un*x Sux. */ | |
fecd2382 | 1724 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 1725 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
1726 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
1727 | ? BSD_FILL_SIZE_CROCK_4 | |
1728 | : (int) temp_size)); | |
1729 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
1730 | * but emits no error message because it seems a legal thing to do. | |
1731 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1732 | */ | |
6efd877d | 1733 | } |
6efd877d | 1734 | demand_empty_rest_of_line (); |
f8701a3f SC |
1735 | } |
1736 | ||
6efd877d | 1737 | void |
604633ae ILT |
1738 | s_globl (ignore) |
1739 | int ignore; | |
6efd877d | 1740 | { |
40324362 KR |
1741 | char *name; |
1742 | int c; | |
1743 | symbolS *symbolP; | |
18c9057f ILT |
1744 | char *stop = NULL; |
1745 | char stopc; | |
1746 | ||
1747 | if (flag_mri) | |
1748 | stop = mri_comment_field (&stopc); | |
fecd2382 | 1749 | |
6efd877d KR |
1750 | do |
1751 | { | |
1752 | name = input_line_pointer; | |
1753 | c = get_symbol_end (); | |
1754 | symbolP = symbol_find_or_make (name); | |
1755 | *input_line_pointer = c; | |
1756 | SKIP_WHITESPACE (); | |
1757 | S_SET_EXTERNAL (symbolP); | |
1758 | if (c == ',') | |
1759 | { | |
1760 | input_line_pointer++; | |
1761 | SKIP_WHITESPACE (); | |
1762 | if (*input_line_pointer == '\n') | |
1763 | c = '\n'; | |
1764 | } | |
1765 | } | |
1766 | while (c == ','); | |
18c9057f ILT |
1767 | |
1768 | if (flag_mri) | |
1769 | mri_comment_end (stop, stopc); | |
1770 | ||
6efd877d | 1771 | demand_empty_rest_of_line (); |
40324362 | 1772 | } |
6efd877d | 1773 | |
7e047ac2 ILT |
1774 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
1775 | ||
1776 | void | |
1777 | s_irp (irpc) | |
1778 | int irpc; | |
1779 | { | |
1780 | char *file; | |
1781 | unsigned int line; | |
1782 | sb s; | |
1783 | const char *err; | |
1784 | sb out; | |
1785 | ||
1786 | as_where (&file, &line); | |
1787 | ||
1788 | sb_new (&s); | |
1789 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1790 | sb_add_char (&s, *input_line_pointer++); | |
1791 | ||
1792 | sb_new (&out); | |
1793 | ||
1794 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1795 | if (err != NULL) | |
1796 | as_bad_where (file, line, "%s", err); | |
1797 | ||
1798 | sb_kill (&s); | |
1799 | ||
1800 | input_scrub_include_sb (&out, input_line_pointer); | |
1801 | sb_kill (&out); | |
1802 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1803 | } | |
1804 | ||
7d3741ed ILT |
1805 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark |
1806 | the section to only be linked once. However, this is not supported | |
1807 | by most object file formats. This takes an optional argument, | |
1808 | which is what to do about duplicates. */ | |
1809 | ||
1810 | void | |
1811 | s_linkonce (ignore) | |
1812 | int ignore; | |
1813 | { | |
1814 | enum linkonce_type type; | |
1815 | ||
1816 | SKIP_WHITESPACE (); | |
1817 | ||
1818 | type = LINKONCE_DISCARD; | |
1819 | ||
1820 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1821 | { | |
1822 | char *s; | |
1823 | char c; | |
1824 | ||
1825 | s = input_line_pointer; | |
1826 | c = get_symbol_end (); | |
1827 | if (strcasecmp (s, "discard") == 0) | |
1828 | type = LINKONCE_DISCARD; | |
1829 | else if (strcasecmp (s, "one_only") == 0) | |
1830 | type = LINKONCE_ONE_ONLY; | |
1831 | else if (strcasecmp (s, "same_size") == 0) | |
1832 | type = LINKONCE_SAME_SIZE; | |
1833 | else if (strcasecmp (s, "same_contents") == 0) | |
1834 | type = LINKONCE_SAME_CONTENTS; | |
1835 | else | |
1836 | as_warn ("unrecognized .linkonce type `%s'", s); | |
1837 | ||
1838 | *input_line_pointer = c; | |
1839 | } | |
1840 | ||
1841 | #ifdef obj_handle_link_once | |
1842 | obj_handle_link_once (type); | |
1843 | #else /* ! defined (obj_handle_link_once) */ | |
1844 | #ifdef BFD_ASSEMBLER | |
1845 | { | |
1846 | flagword flags; | |
1847 | ||
1848 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1849 | as_warn (".linkonce is not supported for this object file format"); | |
1850 | ||
1851 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1852 | flags |= SEC_LINK_ONCE; | |
1853 | switch (type) | |
1854 | { | |
1855 | default: | |
1856 | abort (); | |
1857 | case LINKONCE_DISCARD: | |
1858 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1859 | break; | |
1860 | case LINKONCE_ONE_ONLY: | |
1861 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1862 | break; | |
1863 | case LINKONCE_SAME_SIZE: | |
1864 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
1865 | break; | |
1866 | case LINKONCE_SAME_CONTENTS: | |
1867 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
1868 | break; | |
1869 | } | |
1870 | if (! bfd_set_section_flags (stdoutput, now_seg, flags)) | |
1871 | as_bad ("bfd_set_section_flags: %s", | |
1872 | bfd_errmsg (bfd_get_error ())); | |
1873 | } | |
1874 | #else /* ! defined (BFD_ASSEMBLER) */ | |
1875 | as_warn (".linkonce is not supported for this object file format"); | |
1876 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
1877 | #endif /* ! defined (obj_handle_link_once) */ | |
1878 | ||
1879 | demand_empty_rest_of_line (); | |
1880 | } | |
1881 | ||
d72d8c59 NC |
1882 | static void |
1883 | s_lcomm_internal (needs_align, bytes_p) | |
c8863a58 KR |
1884 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1885 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1886 | int needs_align; | |
d72d8c59 NC |
1887 | /* 1 if the alignment value should be interpreted as the byte boundary, |
1888 | rather than the power of 2. */ | |
1889 | int bytes_p; | |
fecd2382 | 1890 | { |
6efd877d KR |
1891 | register char *name; |
1892 | register char c; | |
1893 | register char *p; | |
1894 | register int temp; | |
1895 | register symbolS *symbolP; | |
9a7d824a ILT |
1896 | segT current_seg = now_seg; |
1897 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1898 | const int max_alignment = 15; |
1899 | int align = 0; | |
9a7d824a | 1900 | segT bss_seg = bss_section; |
6efd877d KR |
1901 | |
1902 | name = input_line_pointer; | |
1903 | c = get_symbol_end (); | |
1904 | p = input_line_pointer; | |
1905 | *p = c; | |
1906 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1907 | |
1908 | /* Accept an optional comma after the name. The comma used to be | |
1909 | required, but Irix 5 cc does not generate it. */ | |
1910 | if (*input_line_pointer == ',') | |
6efd877d | 1911 | { |
46b81190 ILT |
1912 | ++input_line_pointer; |
1913 | SKIP_WHITESPACE (); | |
6efd877d | 1914 | } |
f8701a3f | 1915 | |
6efd877d KR |
1916 | if (*input_line_pointer == '\n') |
1917 | { | |
1918 | as_bad ("Missing size expression"); | |
1919 | return; | |
1920 | } | |
f8701a3f | 1921 | |
6efd877d KR |
1922 | if ((temp = get_absolute_expression ()) < 0) |
1923 | { | |
1924 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1925 | ignore_rest_of_line (); | |
1926 | return; | |
1927 | } | |
f8701a3f | 1928 | |
2ef7731d | 1929 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
a2a5a4fa KR |
1930 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
1931 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
46b81190 | 1932 | { |
a2a5a4fa KR |
1933 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ |
1934 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1935 | { | |
1936 | bss_seg = subseg_new (".sbss", 1); | |
1937 | seg_info (bss_seg)->bss = 1; | |
b95bee13 ILT |
1938 | #ifdef BFD_ASSEMBLER |
1939 | if (! bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) | |
1940 | as_warn ("error setting flags for \".sbss\": %s", | |
1941 | bfd_errmsg (bfd_get_error ())); | |
1942 | #endif | |
a2a5a4fa | 1943 | } |
46b81190 | 1944 | } |
9a7d824a | 1945 | #endif |
ede7bc1c SC |
1946 | if (!needs_align) |
1947 | { | |
1948 | /* FIXME. This needs to be machine independent. */ | |
9d90491e ILT |
1949 | if (temp >= 8) |
1950 | align = 3; | |
1951 | else if (temp >= 4) | |
ede7bc1c SC |
1952 | align = 2; |
1953 | else if (temp >= 2) | |
1954 | align = 1; | |
1955 | else | |
c71a604a | 1956 | align = 0; |
ede7bc1c | 1957 | |
a69e5977 ILT |
1958 | #ifdef OBJ_EVAX |
1959 | /* FIXME: This needs to be done in a more general fashion. */ | |
1960 | align = 3; | |
1961 | #endif | |
1962 | ||
ede7bc1c SC |
1963 | record_alignment(bss_seg, align); |
1964 | } | |
9a7d824a | 1965 | |
6efd877d KR |
1966 | if (needs_align) |
1967 | { | |
1968 | align = 0; | |
1969 | SKIP_WHITESPACE (); | |
1970 | if (*input_line_pointer != ',') | |
1971 | { | |
1972 | as_bad ("Expected comma after size"); | |
1973 | ignore_rest_of_line (); | |
1974 | return; | |
1975 | } | |
1976 | input_line_pointer++; | |
1977 | SKIP_WHITESPACE (); | |
1978 | if (*input_line_pointer == '\n') | |
1979 | { | |
1980 | as_bad ("Missing alignment"); | |
1981 | return; | |
1982 | } | |
1983 | align = get_absolute_expression (); | |
d72d8c59 NC |
1984 | if (bytes_p) |
1985 | { | |
1986 | /* Convert to a power of 2. */ | |
1987 | if (align != 0) | |
1988 | { | |
1989 | unsigned int i; | |
1990 | ||
1991 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1992 | ; | |
1993 | if (align != 1) | |
1994 | as_bad ("Alignment not a power of 2"); | |
1995 | align = i; | |
1996 | } | |
1997 | } | |
6efd877d KR |
1998 | if (align > max_alignment) |
1999 | { | |
2000 | align = max_alignment; | |
2001 | as_warn ("Alignment too large: %d. assumed.", align); | |
2002 | } | |
2003 | else if (align < 0) | |
2004 | { | |
2005 | align = 0; | |
2006 | as_warn ("Alignment negative. 0 assumed."); | |
2007 | } | |
9a7d824a | 2008 | record_alignment (bss_seg, align); |
6efd877d | 2009 | } /* if needs align */ |
4075afe1 KR |
2010 | else |
2011 | { | |
2012 | /* Assume some objects may require alignment on some systems. */ | |
a69e5977 | 2013 | #if defined (TC_ALPHA) && ! defined (VMS) |
4075afe1 KR |
2014 | if (temp > 1) |
2015 | { | |
2016 | align = ffs (temp) - 1; | |
2017 | if (temp % (1 << align)) | |
2018 | abort (); | |
2019 | } | |
2020 | #endif | |
2021 | } | |
f8701a3f | 2022 | |
6efd877d KR |
2023 | *p = 0; |
2024 | symbolP = symbol_find_or_make (name); | |
2025 | *p = c; | |
f8701a3f | 2026 | |
6efd877d | 2027 | if ( |
fecd2382 | 2028 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
2029 | S_GET_OTHER (symbolP) == 0 && |
2030 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 2031 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 2032 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
2033 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
2034 | { | |
604633ae | 2035 | char *pfrag; |
85825401 | 2036 | |
9a7d824a | 2037 | subseg_set (bss_seg, 1); |
85825401 ILT |
2038 | |
2039 | if (align) | |
d428c89f | 2040 | frag_align (align, 0, 0); |
85825401 | 2041 | /* detach from old frag */ |
9a7d824a | 2042 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
2043 | symbolP->sy_frag->fr_symbol = NULL; |
2044 | ||
2045 | symbolP->sy_frag = frag_now; | |
604633ae | 2046 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
cd924033 | 2047 | (offsetT) temp, (char *) 0); |
604633ae | 2048 | *pfrag = 0; |
f8701a3f | 2049 | |
9a7d824a | 2050 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 2051 | |
fecd2382 | 2052 | #ifdef OBJ_COFF |
6efd877d | 2053 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
2054 | ".globl" directive -- be careful not to step on storage class |
2055 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
2056 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
2057 | { | |
2058 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 2059 | } |
6efd877d | 2060 | #endif /* OBJ_COFF */ |
cef72a92 ILT |
2061 | |
2062 | #ifdef S_SET_SIZE | |
2063 | S_SET_SIZE (symbolP, temp); | |
2064 | #endif | |
6efd877d KR |
2065 | } |
2066 | else | |
6ef37255 KR |
2067 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
2068 | S_GET_NAME (symbolP)); | |
f8701a3f | 2069 | |
9a7d824a | 2070 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
2071 | |
2072 | demand_empty_rest_of_line (); | |
d72d8c59 NC |
2073 | } /* s_lcomm_internal() */ |
2074 | ||
2075 | void | |
2076 | s_lcomm (needs_align) | |
2077 | int needs_align; | |
2078 | { | |
2079 | s_lcomm_internal (needs_align, 0); | |
2080 | } | |
2081 | ||
2082 | void s_lcomm_bytes (needs_align) | |
2083 | int needs_align; | |
2084 | { | |
2085 | s_lcomm_internal (needs_align, 1); | |
2086 | } | |
fecd2382 | 2087 | |
6efd877d | 2088 | void |
604633ae ILT |
2089 | s_lsym (ignore) |
2090 | int ignore; | |
6efd877d KR |
2091 | { |
2092 | register char *name; | |
2093 | register char c; | |
2094 | register char *p; | |
6efd877d KR |
2095 | expressionS exp; |
2096 | register symbolS *symbolP; | |
2097 | ||
2098 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
2099 | name = input_line_pointer; | |
2100 | c = get_symbol_end (); | |
2101 | p = input_line_pointer; | |
2102 | *p = c; | |
2103 | SKIP_WHITESPACE (); | |
2104 | if (*input_line_pointer != ',') | |
2105 | { | |
2106 | *p = 0; | |
2107 | as_bad ("Expected comma after name \"%s\"", name); | |
2108 | *p = c; | |
2109 | ignore_rest_of_line (); | |
2110 | return; | |
2111 | } | |
2112 | input_line_pointer++; | |
b31f2abb KR |
2113 | expression (&exp); |
2114 | if (exp.X_op != O_constant | |
2115 | && exp.X_op != O_register) | |
2116 | { | |
2117 | as_bad ("bad expression"); | |
2118 | ignore_rest_of_line (); | |
2119 | return; | |
2120 | } | |
6efd877d KR |
2121 | *p = 0; |
2122 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 2123 | |
c8863a58 KR |
2124 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
2125 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2126 | those fields, and I can't see when they'd ever be tripped. I | |
2127 | don't think I understand why they were here so I may have | |
2128 | introduced a bug. As recently as 1.37 didn't have this test | |
2129 | anyway. xoxorich. */ | |
f8701a3f | 2130 | |
9471a360 | 2131 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
2132 | && S_GET_VALUE (symbolP) == 0) |
2133 | { | |
c8863a58 KR |
2134 | /* The name might be an undefined .global symbol; be sure to |
2135 | keep the "external" bit. */ | |
b31f2abb KR |
2136 | S_SET_SEGMENT (symbolP, |
2137 | (exp.X_op == O_constant | |
2138 | ? absolute_section | |
2139 | : reg_section)); | |
2140 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
2141 | } |
2142 | else | |
2143 | { | |
2144 | as_bad ("Symbol %s already defined", name); | |
2145 | } | |
2146 | *p = c; | |
2147 | demand_empty_rest_of_line (); | |
2148 | } /* s_lsym() */ | |
2149 | ||
7e047ac2 ILT |
2150 | /* Read a line into an sb. */ |
2151 | ||
2152 | static int | |
2153 | get_line_sb (line) | |
2154 | sb *line; | |
2155 | { | |
d428c89f ILT |
2156 | char quote1, quote2, inquote; |
2157 | ||
adeab39b MM |
2158 | if (input_line_pointer[-1] == '\n') |
2159 | bump_line_counters (); | |
2160 | ||
7e047ac2 ILT |
2161 | if (input_line_pointer >= buffer_limit) |
2162 | { | |
2163 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2164 | if (buffer_limit == 0) | |
2165 | return 0; | |
2166 | } | |
2167 | ||
d428c89f ILT |
2168 | /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this |
2169 | code needs to be changed. */ | |
2170 | if (! flag_m68k_mri) | |
2171 | quote1 = '"'; | |
2172 | else | |
2173 | quote1 = '\0'; | |
2174 | ||
2175 | quote2 = '\0'; | |
2176 | if (flag_m68k_mri) | |
2177 | quote2 = '\''; | |
2178 | #ifdef LEX_IS_STRINGQUOTE | |
2179 | quote2 = '\''; | |
2180 | #endif | |
2181 | ||
2182 | inquote = '\0'; | |
2183 | while (! is_end_of_line[(unsigned char) *input_line_pointer] | |
2184 | || (inquote != '\0' && *input_line_pointer != '\n')) | |
2185 | { | |
2186 | if (inquote == *input_line_pointer) | |
2187 | inquote = '\0'; | |
2188 | else if (inquote == '\0') | |
2189 | { | |
2190 | if (*input_line_pointer == quote1) | |
2191 | inquote = quote1; | |
2192 | else if (*input_line_pointer == quote2) | |
2193 | inquote = quote2; | |
2194 | } | |
2195 | sb_add_char (line, *input_line_pointer++); | |
2196 | } | |
08ce71f5 RH |
2197 | while (input_line_pointer < buffer_limit |
2198 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
7e047ac2 | 2199 | { |
adeab39b MM |
2200 | if (input_line_pointer[-1] == '\n') |
2201 | bump_line_counters (); | |
7e047ac2 ILT |
2202 | ++input_line_pointer; |
2203 | } | |
2204 | return 1; | |
2205 | } | |
2206 | ||
2207 | /* Define a macro. This is an interface to macro.c, which is shared | |
2208 | between gas and gasp. */ | |
2209 | ||
2210 | void | |
2211 | s_macro (ignore) | |
2212 | int ignore; | |
2213 | { | |
2214 | char *file; | |
2215 | unsigned int line; | |
2216 | sb s; | |
2217 | sb label; | |
2218 | const char *err; | |
a69e5977 | 2219 | const char *name; |
7e047ac2 ILT |
2220 | |
2221 | as_where (&file, &line); | |
2222 | ||
2223 | sb_new (&s); | |
2224 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2225 | sb_add_char (&s, *input_line_pointer++); | |
2226 | ||
2227 | sb_new (&label); | |
2228 | if (line_label != NULL) | |
2229 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2230 | ||
a69e5977 | 2231 | err = define_macro (0, &s, &label, get_line_sb, &name); |
7e047ac2 ILT |
2232 | if (err != NULL) |
2233 | as_bad_where (file, line, "%s", err); | |
2234 | else | |
2235 | { | |
2236 | if (line_label != NULL) | |
2237 | { | |
2238 | S_SET_SEGMENT (line_label, undefined_section); | |
2239 | S_SET_VALUE (line_label, 0); | |
2240 | line_label->sy_frag = &zero_address_frag; | |
2241 | } | |
a69e5977 ILT |
2242 | |
2243 | if (((flag_m68k_mri | |
2244 | #ifdef NO_PSEUDO_DOT | |
2245 | || 1 | |
2246 | #endif | |
2247 | ) | |
2248 | && hash_find (po_hash, name) != NULL) | |
2249 | || (! flag_m68k_mri | |
2250 | && *name == '.' | |
2251 | && hash_find (po_hash, name + 1) != NULL)) | |
2252 | as_warn ("attempt to redefine pseudo-op `%s' ignored", | |
2253 | name); | |
7e047ac2 ILT |
2254 | } |
2255 | ||
2256 | sb_kill (&s); | |
2257 | } | |
2258 | ||
2259 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2260 | expansion. */ | |
2261 | ||
2262 | void | |
2263 | s_mexit (ignore) | |
2264 | int ignore; | |
2265 | { | |
cd924033 | 2266 | cond_exit_macro (macro_nest); |
7e047ac2 ILT |
2267 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); |
2268 | } | |
2269 | ||
20710f1c ILT |
2270 | /* Switch in and out of MRI mode. */ |
2271 | ||
2272 | void | |
2273 | s_mri (ignore) | |
2274 | int ignore; | |
2275 | { | |
2276 | int on, old_flag; | |
2277 | ||
2278 | on = get_absolute_expression (); | |
2279 | old_flag = flag_mri; | |
2280 | if (on != 0) | |
2281 | { | |
2282 | flag_mri = 1; | |
2283 | #ifdef TC_M68K | |
2284 | flag_m68k_mri = 1; | |
2285 | #endif | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | flag_mri = 0; | |
2290 | flag_m68k_mri = 0; | |
2291 | } | |
2292 | ||
2293 | #ifdef MRI_MODE_CHANGE | |
2294 | if (on != old_flag) | |
2295 | MRI_MODE_CHANGE (on); | |
2296 | #endif | |
2297 | ||
2298 | demand_empty_rest_of_line (); | |
2299 | } | |
2300 | ||
e28c40d7 ILT |
2301 | /* Handle changing the location counter. */ |
2302 | ||
2303 | static void | |
2304 | do_org (segment, exp, fill) | |
2305 | segT segment; | |
2306 | expressionS *exp; | |
2307 | int fill; | |
2308 | { | |
2309 | if (segment != now_seg && segment != absolute_section) | |
2310 | as_bad ("invalid segment \"%s\"; segment \"%s\" assumed", | |
2311 | segment_name (segment), segment_name (now_seg)); | |
2312 | ||
2313 | if (now_seg == absolute_section) | |
2314 | { | |
2315 | if (fill != 0) | |
2316 | as_warn ("ignoring fill value in absolute section"); | |
2317 | if (exp->X_op != O_constant) | |
2318 | { | |
2319 | as_bad ("only constant offsets supported in absolute section"); | |
2320 | exp->X_add_number = 0; | |
2321 | } | |
2322 | abs_section_offset = exp->X_add_number; | |
2323 | } | |
2324 | else | |
2325 | { | |
2326 | char *p; | |
2327 | ||
2328 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
2329 | exp->X_add_number, (char *) NULL); | |
2330 | *p = fill; | |
2331 | } | |
2332 | } | |
2333 | ||
6efd877d | 2334 | void |
604633ae ILT |
2335 | s_org (ignore) |
2336 | int ignore; | |
6efd877d KR |
2337 | { |
2338 | register segT segment; | |
2339 | expressionS exp; | |
2340 | register long temp_fill; | |
e28c40d7 | 2341 | |
42ac8fa8 ILT |
2342 | /* The m68k MRI assembler has a different meaning for .org. It |
2343 | means to create an absolute section at a given address. We can't | |
2344 | support that--use a linker script instead. */ | |
cef72a92 | 2345 | if (flag_m68k_mri) |
69e077f3 ILT |
2346 | { |
2347 | as_bad ("MRI style ORG pseudo-op not supported"); | |
2348 | ignore_rest_of_line (); | |
2349 | return; | |
2350 | } | |
2351 | ||
9471a360 KR |
2352 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
2353 | thing as a sub-segment-relative origin. Any absolute origin is | |
2354 | given a warning, then assumed to be segment-relative. Any | |
2355 | segmented origin expression ("foo+42") had better be in the right | |
2356 | segment or the .org is ignored. | |
2357 | ||
2358 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2359 | we never know sub-segment sizes when we are reading code. BSD | |
2360 | will crash trying to emit negative numbers of filler bytes in | |
2361 | certain .orgs. We don't crash, but see as-write for that code. | |
2362 | ||
2363 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
2364 | segment = get_known_segmented_expression (&exp); |
2365 | if (*input_line_pointer == ',') | |
2366 | { | |
2367 | input_line_pointer++; | |
2368 | temp_fill = get_absolute_expression (); | |
2369 | } | |
2370 | else | |
2371 | temp_fill = 0; | |
e28c40d7 | 2372 | |
6efd877d | 2373 | if (!need_pass_2) |
e28c40d7 ILT |
2374 | do_org (segment, &exp, temp_fill); |
2375 | ||
6efd877d KR |
2376 | demand_empty_rest_of_line (); |
2377 | } /* s_org() */ | |
2378 | ||
e14994d9 ILT |
2379 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be |
2380 | called by the obj-format routine which handles section changing | |
2381 | when in MRI mode. It will create a new section, and return it. It | |
c7a89bde ILT |
2382 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), |
2383 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2384 | flags will be set in the section. */ | |
e14994d9 ILT |
2385 | |
2386 | void | |
2387 | s_mri_sect (type) | |
2388 | char *type; | |
2389 | { | |
42ac8fa8 ILT |
2390 | #ifdef TC_M68K |
2391 | ||
e14994d9 ILT |
2392 | char *name; |
2393 | char c; | |
2394 | segT seg; | |
2395 | ||
2396 | SKIP_WHITESPACE (); | |
2397 | ||
2398 | name = input_line_pointer; | |
2399 | if (! isdigit ((unsigned char) *name)) | |
2400 | c = get_symbol_end (); | |
2401 | else | |
2402 | { | |
2403 | do | |
2404 | { | |
2405 | ++input_line_pointer; | |
2406 | } | |
2407 | while (isdigit ((unsigned char) *input_line_pointer)); | |
2408 | c = *input_line_pointer; | |
2409 | *input_line_pointer = '\0'; | |
2410 | } | |
2411 | ||
c7a89bde | 2412 | name = xstrdup (name); |
e14994d9 ILT |
2413 | |
2414 | *input_line_pointer = c; | |
2415 | ||
2416 | seg = subseg_new (name, 0); | |
2417 | ||
2418 | if (*input_line_pointer == ',') | |
2419 | { | |
2420 | int align; | |
2421 | ||
2422 | ++input_line_pointer; | |
2423 | align = get_absolute_expression (); | |
2424 | record_alignment (seg, align); | |
2425 | } | |
2426 | ||
c7a89bde | 2427 | *type = 'C'; |
e14994d9 ILT |
2428 | if (*input_line_pointer == ',') |
2429 | { | |
2430 | c = *++input_line_pointer; | |
2431 | c = toupper ((unsigned char) c); | |
2432 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | |
2433 | *type = c; | |
2434 | else | |
2435 | as_bad ("unrecognized section type"); | |
2436 | ++input_line_pointer; | |
2437 | ||
2438 | #ifdef BFD_ASSEMBLER | |
2439 | { | |
2440 | flagword flags; | |
2441 | ||
2442 | flags = SEC_NO_FLAGS; | |
ca232972 | 2443 | if (*type == 'C') |
c7a89bde ILT |
2444 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; |
2445 | else if (*type == 'D' || *type == 'M') | |
2446 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
ca232972 | 2447 | else if (*type == 'R') |
c7a89bde | 2448 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; |
e14994d9 ILT |
2449 | if (flags != SEC_NO_FLAGS) |
2450 | { | |
2451 | if (! bfd_set_section_flags (stdoutput, seg, flags)) | |
2452 | as_warn ("error setting flags for \"%s\": %s", | |
ca232972 | 2453 | bfd_section_name (stdoutput, seg), |
e14994d9 ILT |
2454 | bfd_errmsg (bfd_get_error ())); |
2455 | } | |
2456 | } | |
2457 | #endif | |
2458 | } | |
2459 | ||
2460 | /* Ignore the HP type. */ | |
2461 | if (*input_line_pointer == ',') | |
2462 | input_line_pointer += 2; | |
2463 | ||
2464 | demand_empty_rest_of_line (); | |
42ac8fa8 ILT |
2465 | |
2466 | #else /* ! TC_M68K */ | |
2467 | #ifdef TC_I960 | |
2468 | ||
2469 | char *name; | |
2470 | char c; | |
2471 | segT seg; | |
2472 | ||
2473 | SKIP_WHITESPACE (); | |
2474 | ||
2475 | name = input_line_pointer; | |
2476 | c = get_symbol_end (); | |
2477 | ||
c7a89bde | 2478 | name = xstrdup (name); |
42ac8fa8 ILT |
2479 | |
2480 | *input_line_pointer = c; | |
2481 | ||
2482 | seg = subseg_new (name, 0); | |
2483 | ||
2484 | if (*input_line_pointer != ',') | |
2485 | *type = 'C'; | |
2486 | else | |
2487 | { | |
2488 | char *sectype; | |
2489 | ||
2490 | ++input_line_pointer; | |
2491 | SKIP_WHITESPACE (); | |
2492 | sectype = input_line_pointer; | |
2493 | c = get_symbol_end (); | |
2494 | if (*sectype == '\0') | |
2495 | *type = 'C'; | |
2496 | else if (strcasecmp (sectype, "text") == 0) | |
2497 | *type = 'C'; | |
2498 | else if (strcasecmp (sectype, "data") == 0) | |
2499 | *type = 'D'; | |
2500 | else if (strcasecmp (sectype, "romdata") == 0) | |
2501 | *type = 'R'; | |
2502 | else | |
2503 | as_warn ("unrecognized section type `%s'", sectype); | |
2504 | *input_line_pointer = c; | |
2505 | } | |
2506 | ||
2507 | if (*input_line_pointer == ',') | |
2508 | { | |
2509 | char *seccmd; | |
2510 | ||
2511 | ++input_line_pointer; | |
2512 | SKIP_WHITESPACE (); | |
2513 | seccmd = input_line_pointer; | |
2514 | c = get_symbol_end (); | |
2515 | if (strcasecmp (seccmd, "absolute") == 0) | |
2516 | { | |
2517 | as_bad ("absolute sections are not supported"); | |
2518 | *input_line_pointer = c; | |
2519 | ignore_rest_of_line (); | |
2520 | return; | |
2521 | } | |
2522 | else if (strcasecmp (seccmd, "align") == 0) | |
2523 | { | |
2524 | int align; | |
2525 | ||
2526 | *input_line_pointer = c; | |
2527 | align = get_absolute_expression (); | |
2528 | record_alignment (seg, align); | |
2529 | } | |
2530 | else | |
2531 | { | |
2532 | as_warn ("unrecognized section command `%s'", seccmd); | |
2533 | *input_line_pointer = c; | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | demand_empty_rest_of_line (); | |
2538 | ||
2539 | #else /* ! TC_I960 */ | |
2540 | /* The MRI assembler seems to use different forms of .sect for | |
2541 | different targets. */ | |
2542 | abort (); | |
2543 | #endif /* ! TC_I960 */ | |
2544 | #endif /* ! TC_M68K */ | |
2545 | } | |
2546 | ||
2547 | /* Handle the .print pseudo-op. */ | |
2548 | ||
2549 | void | |
2550 | s_print (ignore) | |
2551 | int ignore; | |
2552 | { | |
2553 | char *s; | |
2554 | int len; | |
2555 | ||
2556 | s = demand_copy_C_string (&len); | |
2557 | printf ("%s\n", s); | |
2558 | demand_empty_rest_of_line (); | |
2559 | } | |
2560 | ||
2561 | /* Handle the .purgem pseudo-op. */ | |
2562 | ||
2563 | void | |
2564 | s_purgem (ignore) | |
2565 | int ignore; | |
2566 | { | |
2567 | if (is_it_end_of_statement ()) | |
2568 | { | |
2569 | demand_empty_rest_of_line (); | |
2570 | return; | |
2571 | } | |
2572 | ||
2573 | do | |
2574 | { | |
2575 | char *name; | |
2576 | char c; | |
2577 | ||
2578 | SKIP_WHITESPACE (); | |
2579 | name = input_line_pointer; | |
2580 | c = get_symbol_end (); | |
2581 | delete_macro (name); | |
2582 | *input_line_pointer = c; | |
2583 | SKIP_WHITESPACE (); | |
2584 | } | |
2585 | while (*input_line_pointer++ == ','); | |
2586 | ||
2587 | --input_line_pointer; | |
2588 | demand_empty_rest_of_line (); | |
e14994d9 ILT |
2589 | } |
2590 | ||
7e047ac2 ILT |
2591 | /* Handle the .rept pseudo-op. */ |
2592 | ||
2593 | void | |
2594 | s_rept (ignore) | |
2595 | int ignore; | |
2596 | { | |
2597 | int count; | |
2598 | sb one; | |
2599 | sb many; | |
2600 | ||
2601 | count = get_absolute_expression (); | |
2602 | ||
2603 | sb_new (&one); | |
2604 | if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb)) | |
2605 | { | |
2606 | as_bad ("rept without endr"); | |
2607 | return; | |
2608 | } | |
2609 | ||
2610 | sb_new (&many); | |
2611 | while (count-- > 0) | |
2612 | sb_add_sb (&many, &one); | |
2613 | ||
2614 | sb_kill (&one); | |
2615 | ||
2616 | input_scrub_include_sb (&many, input_line_pointer); | |
2617 | sb_kill (&many); | |
2618 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2619 | } | |
2620 | ||
cd924033 ILT |
2621 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2622 | this is .equiv, and it is an error if the symbol is already | |
2623 | defined. */ | |
2624 | ||
6efd877d | 2625 | void |
cd924033 ILT |
2626 | s_set (equiv) |
2627 | int equiv; | |
6efd877d KR |
2628 | { |
2629 | register char *name; | |
2630 | register char delim; | |
2631 | register char *end_name; | |
2632 | register symbolS *symbolP; | |
2633 | ||
2634 | /* | |
c8863a58 KR |
2635 | * Especial apologies for the random logic: |
2636 | * this just grew, and could be parsed much more simply! | |
2637 | * Dean in haste. | |
2638 | */ | |
6efd877d KR |
2639 | name = input_line_pointer; |
2640 | delim = get_symbol_end (); | |
2641 | end_name = input_line_pointer; | |
2642 | *end_name = delim; | |
2643 | SKIP_WHITESPACE (); | |
f8701a3f | 2644 | |
6efd877d KR |
2645 | if (*input_line_pointer != ',') |
2646 | { | |
2647 | *end_name = 0; | |
2648 | as_bad ("Expected comma after name \"%s\"", name); | |
2649 | *end_name = delim; | |
2650 | ignore_rest_of_line (); | |
2651 | return; | |
2652 | } | |
2653 | ||
2654 | input_line_pointer++; | |
2655 | *end_name = 0; | |
2656 | ||
2657 | if (name[0] == '.' && name[1] == '\0') | |
2658 | { | |
2659 | /* Turn '. = mumble' into a .org mumble */ | |
2660 | register segT segment; | |
2661 | expressionS exp; | |
6efd877d KR |
2662 | |
2663 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 2664 | |
6efd877d | 2665 | if (!need_pass_2) |
e28c40d7 | 2666 | do_org (segment, &exp, 0); |
6efd877d KR |
2667 | |
2668 | *end_name = delim; | |
2669 | return; | |
2670 | } | |
2671 | ||
2672 | if ((symbolP = symbol_find (name)) == NULL | |
2673 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2674 | { | |
9471a360 | 2675 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 2676 | #ifdef OBJ_COFF |
6efd877d KR |
2677 | /* "set" symbols are local unless otherwise specified. */ |
2678 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 2679 | #endif /* OBJ_COFF */ |
f8701a3f | 2680 | |
6efd877d | 2681 | } /* make a new symbol */ |
f8701a3f | 2682 | |
6efd877d | 2683 | symbol_table_insert (symbolP); |
f8701a3f | 2684 | |
6efd877d | 2685 | *end_name = delim; |
cd924033 ILT |
2686 | |
2687 | if (equiv | |
2688 | && S_IS_DEFINED (symbolP) | |
2689 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2690 | as_bad ("symbol `%s' already defined", S_GET_NAME (symbolP)); | |
2691 | ||
6efd877d KR |
2692 | pseudo_set (symbolP); |
2693 | demand_empty_rest_of_line (); | |
2694 | } /* s_set() */ | |
fecd2382 | 2695 | |
6efd877d KR |
2696 | void |
2697 | s_space (mult) | |
2698 | int mult; | |
b53ccaac | 2699 | { |
cd3b81bd | 2700 | expressionS exp; |
adeab39b | 2701 | expressionS val; |
cd3b81bd | 2702 | char *p = 0; |
3dce804d ILT |
2703 | char *stop = NULL; |
2704 | char stopc; | |
a6b200da | 2705 | int bytes; |
6efd877d | 2706 | |
a2a5a4fa KR |
2707 | #ifdef md_flush_pending_output |
2708 | md_flush_pending_output (); | |
2709 | #endif | |
2710 | ||
3dce804d | 2711 | if (flag_mri) |
18c9057f | 2712 | stop = mri_comment_field (&stopc); |
3dce804d | 2713 | |
a69e5977 ILT |
2714 | /* In m68k MRI mode, we need to align to a word boundary, unless |
2715 | this is ds.b. */ | |
2716 | if (flag_m68k_mri && mult > 1) | |
2717 | { | |
2718 | if (now_seg == absolute_section) | |
2719 | { | |
2720 | abs_section_offset += abs_section_offset & 1; | |
2721 | if (line_label != NULL) | |
2722 | S_SET_VALUE (line_label, abs_section_offset); | |
2723 | } | |
2724 | else if (mri_common_symbol != NULL) | |
2725 | { | |
2726 | valueT val; | |
2727 | ||
2728 | val = S_GET_VALUE (mri_common_symbol); | |
2729 | if ((val & 1) != 0) | |
2730 | { | |
2731 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2732 | if (line_label != NULL) | |
2733 | { | |
2734 | know (line_label->sy_value.X_op == O_symbol); | |
2735 | know (line_label->sy_value.X_add_symbol == mri_common_symbol); | |
2736 | line_label->sy_value.X_add_number += 1; | |
2737 | } | |
2738 | } | |
2739 | } | |
2740 | else | |
2741 | { | |
d428c89f | 2742 | do_align (1, (char *) NULL, 0, 0); |
a69e5977 ILT |
2743 | if (line_label != NULL) |
2744 | { | |
2745 | line_label->sy_frag = frag_now; | |
2746 | S_SET_VALUE (line_label, frag_now_fix ()); | |
2747 | } | |
2748 | } | |
2749 | } | |
2750 | ||
a6b200da ILT |
2751 | bytes = mult; |
2752 | ||
cd3b81bd | 2753 | expression (&exp); |
cd3b81bd | 2754 | |
adeab39b MM |
2755 | SKIP_WHITESPACE (); |
2756 | if (*input_line_pointer == ',') | |
2757 | { | |
2758 | ++input_line_pointer; | |
2759 | expression (&val); | |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | val.X_op = O_constant; | |
2764 | val.X_add_number = 0; | |
2765 | } | |
cd3b81bd | 2766 | |
adeab39b MM |
2767 | if (val.X_op != O_constant |
2768 | || val.X_add_number < - 0x80 | |
2769 | || val.X_add_number > 0xff | |
2770 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2771 | { | |
2772 | if (exp.X_op != O_constant) | |
2773 | as_bad ("Unsupported variable size or fill value"); | |
2774 | else | |
e28c40d7 | 2775 | { |
adeab39b | 2776 | offsetT i; |
e28c40d7 | 2777 | |
adeab39b MM |
2778 | if (mult == 0) |
2779 | mult = 1; | |
a6b200da | 2780 | bytes = mult * exp.X_add_number; |
adeab39b MM |
2781 | for (i = 0; i < exp.X_add_number; i++) |
2782 | emit_expr (&val, mult); | |
1356d77d | 2783 | } |
6efd877d KR |
2784 | } |
2785 | else | |
2786 | { | |
adeab39b | 2787 | if (exp.X_op == O_constant) |
e28c40d7 | 2788 | { |
adeab39b MM |
2789 | long repeat; |
2790 | ||
2791 | repeat = exp.X_add_number; | |
2792 | if (mult) | |
2793 | repeat *= mult; | |
a6b200da | 2794 | bytes = repeat; |
adeab39b MM |
2795 | if (repeat <= 0) |
2796 | { | |
2797 | if (! flag_mri || repeat < 0) | |
2798 | as_warn (".space repeat count is %s, ignored", | |
2799 | repeat ? "negative" : "zero"); | |
2800 | goto getout; | |
2801 | } | |
2802 | ||
2803 | /* If we are in the absolute section, just bump the offset. */ | |
2804 | if (now_seg == absolute_section) | |
2805 | { | |
2806 | abs_section_offset += repeat; | |
2807 | goto getout; | |
2808 | } | |
2809 | ||
2810 | /* If we are secretly in an MRI common section, then | |
2811 | creating space just increases the size of the common | |
2812 | symbol. */ | |
2813 | if (mri_common_symbol != NULL) | |
2814 | { | |
2815 | S_SET_VALUE (mri_common_symbol, | |
2816 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2817 | goto getout; | |
2818 | } | |
2819 | ||
2820 | if (!need_pass_2) | |
2821 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
cd924033 | 2822 | (offsetT) repeat, (char *) 0); |
e28c40d7 | 2823 | } |
adeab39b | 2824 | else |
1356d77d | 2825 | { |
adeab39b MM |
2826 | if (now_seg == absolute_section) |
2827 | { | |
2828 | as_bad ("space allocation too complex in absolute section"); | |
2829 | subseg_set (text_section, 0); | |
2830 | } | |
2831 | if (mri_common_symbol != NULL) | |
2832 | { | |
2833 | as_bad ("space allocation too complex in common section"); | |
2834 | mri_common_symbol = NULL; | |
2835 | } | |
2836 | if (!need_pass_2) | |
2837 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
cd924033 | 2838 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); |
1356d77d | 2839 | } |
adeab39b MM |
2840 | |
2841 | if (p) | |
2842 | *p = val.X_add_number; | |
6efd877d | 2843 | } |
3dce804d ILT |
2844 | |
2845 | getout: | |
a6b200da ILT |
2846 | |
2847 | /* In MRI mode, after an odd number of bytes, we must align to an | |
2848 | even word boundary, unless the next instruction is a dc.b, ds.b | |
2849 | or dcb.b. */ | |
2850 | if (flag_mri && (bytes & 1) != 0) | |
2851 | mri_pending_align = 1; | |
2852 | ||
3dce804d | 2853 | if (flag_mri) |
18c9057f | 2854 | mri_comment_end (stop, stopc); |
3dce804d | 2855 | |
6efd877d | 2856 | demand_empty_rest_of_line (); |
cd3b81bd | 2857 | } |
fecd2382 | 2858 | |
e28c40d7 ILT |
2859 | /* This is like s_space, but the value is a floating point number with |
2860 | the given precision. This is for the MRI dcb.s pseudo-op and | |
2861 | friends. */ | |
2862 | ||
2863 | void | |
2864 | s_float_space (float_type) | |
2865 | int float_type; | |
2866 | { | |
2867 | offsetT count; | |
2868 | int flen; | |
2869 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
18c9057f ILT |
2870 | char *stop = NULL; |
2871 | char stopc; | |
2872 | ||
2873 | if (flag_mri) | |
2874 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2875 | |
2876 | count = get_absolute_expression (); | |
2877 | ||
2878 | SKIP_WHITESPACE (); | |
2879 | if (*input_line_pointer != ',') | |
2880 | { | |
2881 | as_bad ("missing value"); | |
18c9057f ILT |
2882 | if (flag_mri) |
2883 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2884 | ignore_rest_of_line (); |
2885 | return; | |
2886 | } | |
2887 | ||
2888 | ++input_line_pointer; | |
2889 | ||
2890 | SKIP_WHITESPACE (); | |
2891 | ||
2892 | /* Skip any 0{letter} that may be present. Don't even check if the | |
2893 | * letter is legal. */ | |
2894 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) | |
2895 | input_line_pointer += 2; | |
2896 | ||
2897 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
2898 | with the exact digits specified. */ | |
2899 | if (input_line_pointer[0] == ':') | |
2900 | { | |
2901 | flen = hex_float (float_type, temp); | |
2902 | if (flen < 0) | |
2903 | { | |
18c9057f ILT |
2904 | if (flag_mri) |
2905 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2906 | ignore_rest_of_line (); |
2907 | return; | |
2908 | } | |
2909 | } | |
2910 | else | |
2911 | { | |
2912 | char *err; | |
2913 | ||
2914 | err = md_atof (float_type, temp, &flen); | |
2915 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
2916 | know (flen > 0); | |
2917 | if (err) | |
2918 | { | |
2919 | as_bad ("Bad floating literal: %s", err); | |
18c9057f ILT |
2920 | if (flag_mri) |
2921 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2922 | ignore_rest_of_line (); |
2923 | return; | |
2924 | } | |
2925 | } | |
2926 | ||
2927 | while (--count >= 0) | |
2928 | { | |
2929 | char *p; | |
2930 | ||
2931 | p = frag_more (flen); | |
2932 | memcpy (p, temp, (unsigned int) flen); | |
2933 | } | |
2934 | ||
18c9057f ILT |
2935 | if (flag_mri) |
2936 | mri_comment_end (stop, stopc); | |
2937 | ||
e28c40d7 ILT |
2938 | demand_empty_rest_of_line (); |
2939 | } | |
2940 | ||
2941 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
2942 | ||
2943 | void | |
2944 | s_struct (ignore) | |
2945 | int ignore; | |
2946 | { | |
18c9057f ILT |
2947 | char *stop = NULL; |
2948 | char stopc; | |
2949 | ||
2950 | if (flag_mri) | |
2951 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2952 | abs_section_offset = get_absolute_expression (); |
2953 | subseg_set (absolute_section, 0); | |
18c9057f ILT |
2954 | if (flag_mri) |
2955 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2956 | demand_empty_rest_of_line (); |
2957 | } | |
2958 | ||
fecd2382 | 2959 | void |
604633ae ILT |
2960 | s_text (ignore) |
2961 | int ignore; | |
fecd2382 | 2962 | { |
6efd877d | 2963 | register int temp; |
f8701a3f | 2964 | |
6efd877d | 2965 | temp = get_absolute_expression (); |
9471a360 | 2966 | subseg_set (text_section, (subsegT) temp); |
6efd877d | 2967 | demand_empty_rest_of_line (); |
80d80c64 KR |
2968 | #ifdef OBJ_VMS |
2969 | const_flag &= ~IN_DEFAULT_SECTION; | |
2970 | #endif | |
6efd877d | 2971 | } /* s_text() */ |
fecd2382 | 2972 | \f |
6efd877d | 2973 | |
6efd877d KR |
2974 | void |
2975 | demand_empty_rest_of_line () | |
2976 | { | |
2977 | SKIP_WHITESPACE (); | |
58d4951d | 2978 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
2979 | { |
2980 | input_line_pointer++; | |
2981 | } | |
2982 | else | |
2983 | { | |
2984 | ignore_rest_of_line (); | |
2985 | } | |
2986 | /* Return having already swallowed end-of-line. */ | |
2987 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
2988 | |
2989 | void | |
6efd877d | 2990 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 2991 | { |
58d4951d | 2992 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2993 | { |
6efd877d KR |
2994 | if (isprint (*input_line_pointer)) |
2995 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
2996 | *input_line_pointer); |
2997 | else | |
6efd877d | 2998 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
2999 | *input_line_pointer); |
3000 | while (input_line_pointer < buffer_limit | |
58d4951d | 3001 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 3002 | { |
6efd877d | 3003 | input_line_pointer++; |
f8701a3f SC |
3004 | } |
3005 | } | |
6efd877d | 3006 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 3007 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
3008 | } |
3009 | ||
3010 | /* | |
3011 | * pseudo_set() | |
3012 | * | |
3013 | * In: Pointer to a symbol. | |
3014 | * Input_line_pointer->expression. | |
3015 | * | |
3016 | * Out: Input_line_pointer->just after any whitespace after expression. | |
3017 | * Tried to set symbol to value of expression. | |
3018 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
3019 | */ |
3020 | void | |
f8701a3f | 3021 | pseudo_set (symbolP) |
6efd877d | 3022 | symbolS *symbolP; |
fecd2382 | 3023 | { |
6efd877d | 3024 | expressionS exp; |
daad3bbf | 3025 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
f8701a3f | 3026 | int ext; |
fecd2382 | 3027 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 3028 | |
6efd877d | 3029 | know (symbolP); /* NULL pointer is logic error. */ |
daad3bbf | 3030 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
6efd877d | 3031 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 3032 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 3033 | |
5ac34ac3 | 3034 | (void) expression (&exp); |
f8701a3f | 3035 | |
5ac34ac3 ILT |
3036 | if (exp.X_op == O_illegal) |
3037 | as_bad ("illegal expression; zero assumed"); | |
3038 | else if (exp.X_op == O_absent) | |
3039 | as_bad ("missing expression; zero assumed"); | |
3040 | else if (exp.X_op == O_big) | |
3041 | as_bad ("%s number invalid; zero assumed", | |
3042 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
3043 | else if (exp.X_op == O_subtract | |
3044 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
3045 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
3046 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
3047 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 3048 | { |
5ac34ac3 ILT |
3049 | exp.X_op = O_constant; |
3050 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3051 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 3052 | } |
5ac34ac3 ILT |
3053 | |
3054 | switch (exp.X_op) | |
9471a360 | 3055 | { |
5ac34ac3 ILT |
3056 | case O_illegal: |
3057 | case O_absent: | |
3058 | case O_big: | |
3059 | exp.X_add_number = 0; | |
3060 | /* Fall through. */ | |
3061 | case O_constant: | |
9471a360 | 3062 | S_SET_SEGMENT (symbolP, absolute_section); |
daad3bbf | 3063 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
3064 | if (ext) |
3065 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 3066 | else |
6efd877d | 3067 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 3068 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 3069 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 3070 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 3071 | break; |
f8701a3f | 3072 | |
5ac34ac3 ILT |
3073 | case O_register: |
3074 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 3075 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
3076 | symbolP->sy_frag = &zero_address_frag; |
3077 | break; | |
3078 | ||
3079 | case O_symbol: | |
ef198870 KR |
3080 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section |
3081 | || exp.X_add_number != 0) | |
5ac34ac3 | 3082 | symbolP->sy_value = exp; |
6efd877d KR |
3083 | else |
3084 | { | |
80d80c64 KR |
3085 | symbolS *s = exp.X_add_symbol; |
3086 | ||
3087 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
daad3bbf | 3088 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
3089 | if (ext) |
3090 | S_SET_EXTERNAL (symbolP); | |
3091 | else | |
3092 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 3093 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 | 3094 | S_SET_VALUE (symbolP, |
80d80c64 KR |
3095 | exp.X_add_number + S_GET_VALUE (s)); |
3096 | symbolP->sy_frag = s->sy_frag; | |
ef198870 | 3097 | copy_symbol_attributes (symbolP, s); |
5ac34ac3 ILT |
3098 | } |
3099 | break; | |
f8701a3f | 3100 | |
5ac34ac3 ILT |
3101 | default: |
3102 | /* The value is some complex expression. | |
3103 | FIXME: Should we set the segment to anything? */ | |
3104 | symbolP->sy_value = exp; | |
3105 | break; | |
f8701a3f | 3106 | } |
fecd2382 RP |
3107 | } |
3108 | \f | |
3109 | /* | |
3110 | * cons() | |
3111 | * | |
3112 | * CONStruct more frag of .bytes, or .words etc. | |
3113 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 3114 | * This understands EXPRESSIONS. |
fecd2382 RP |
3115 | * |
3116 | * Bug (?) | |
3117 | * | |
3118 | * This has a split personality. We use expression() to read the | |
3119 | * value. We can detect if the value won't fit in a byte or word. | |
3120 | * But we can't detect if expression() discarded significant digits | |
3121 | * in the case of a long. Not worth the crocks required to fix it. | |
3122 | */ | |
3123 | ||
40324362 KR |
3124 | /* Select a parser for cons expressions. */ |
3125 | ||
3126 | /* Some targets need to parse the expression in various fancy ways. | |
3127 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3128 | (for example, the HPPA does this). Otherwise, you can define | |
3129 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3130 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3131 | are defined, which is the normal case, then only simple expressions | |
3132 | are permitted. */ | |
3133 | ||
1356d77d ILT |
3134 | static void |
3135 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
3136 | ||
40324362 KR |
3137 | #ifndef TC_PARSE_CONS_EXPRESSION |
3138 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3139 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
3140 | static void | |
3141 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
3142 | #endif | |
40324362 KR |
3143 | #ifdef REPEAT_CONS_EXPRESSIONS |
3144 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3145 | static void | |
3146 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
3147 | #endif | |
3148 | ||
3149 | /* If we haven't gotten one yet, just call expression. */ | |
3150 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3151 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3152 | #endif | |
3153 | #endif | |
3154 | ||
6efd877d KR |
3155 | /* worker to do .byte etc statements */ |
3156 | /* clobbers input_line_pointer, checks */ | |
3157 | /* end-of-line. */ | |
86038ada ILT |
3158 | static void |
3159 | cons_worker (nbytes, rva) | |
604633ae | 3160 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
86038ada | 3161 | int rva; |
fecd2382 | 3162 | { |
286cb27a | 3163 | int c; |
6efd877d | 3164 | expressionS exp; |
86038ada | 3165 | char *stop = NULL; |
3dce804d | 3166 | char stopc; |
f8701a3f | 3167 | |
a2a5a4fa KR |
3168 | #ifdef md_flush_pending_output |
3169 | md_flush_pending_output (); | |
3170 | #endif | |
3171 | ||
18c9057f ILT |
3172 | if (flag_mri) |
3173 | stop = mri_comment_field (&stopc); | |
3174 | ||
40324362 | 3175 | if (is_it_end_of_statement ()) |
6efd877d | 3176 | { |
cef72a92 ILT |
3177 | if (flag_mri) |
3178 | mri_comment_end (stop, stopc); | |
40324362 KR |
3179 | demand_empty_rest_of_line (); |
3180 | return; | |
6efd877d | 3181 | } |
40324362 | 3182 | |
a69e5977 ILT |
3183 | #ifdef md_cons_align |
3184 | md_cons_align (nbytes); | |
3185 | #endif | |
3186 | ||
286cb27a | 3187 | c = 0; |
40324362 | 3188 | do |
6efd877d | 3189 | { |
cef72a92 | 3190 | if (flag_m68k_mri) |
1356d77d ILT |
3191 | parse_mri_cons (&exp, (unsigned int) nbytes); |
3192 | else | |
3193 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
6594d6b9 KR |
3194 | |
3195 | if (rva) | |
3196 | { | |
3197 | if (exp.X_op == O_symbol) | |
3198 | exp.X_op = O_symbol_rva; | |
3199 | else | |
3200 | as_fatal ("rva without symbol"); | |
3201 | } | |
3202 | emit_expr (&exp, (unsigned int) nbytes); | |
286cb27a | 3203 | ++c; |
40324362 | 3204 | } |
18c9057f | 3205 | while (*input_line_pointer++ == ','); |
40324362 | 3206 | |
286cb27a ILT |
3207 | /* In MRI mode, after an odd number of bytes, we must align to an |
3208 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3209 | or dcb.b. */ | |
3210 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3211 | mri_pending_align = 1; | |
3212 | ||
40324362 | 3213 | input_line_pointer--; /* Put terminator back into stream. */ |
86038ada ILT |
3214 | |
3215 | if (flag_mri) | |
18c9057f | 3216 | mri_comment_end (stop, stopc); |
86038ada | 3217 | |
40324362 | 3218 | demand_empty_rest_of_line (); |
30d3a445 | 3219 | } |
f8701a3f | 3220 | |
86038ada ILT |
3221 | |
3222 | void | |
3223 | cons (size) | |
3224 | int size; | |
3225 | { | |
3226 | cons_worker (size, 0); | |
3227 | } | |
3228 | ||
3229 | void | |
3230 | s_rva (size) | |
3231 | int size; | |
3232 | { | |
3233 | cons_worker (size, 1); | |
3234 | } | |
3235 | ||
3236 | ||
40324362 KR |
3237 | /* Put the contents of expression EXP into the object file using |
3238 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 3239 | |
40324362 KR |
3240 | void |
3241 | emit_expr (exp, nbytes) | |
3242 | expressionS *exp; | |
3243 | unsigned int nbytes; | |
3244 | { | |
5ac34ac3 | 3245 | operatorT op; |
40324362 | 3246 | register char *p; |
80aab579 | 3247 | valueT extra_digit = 0; |
f8701a3f | 3248 | |
40324362 KR |
3249 | /* Don't do anything if we are going to make another pass. */ |
3250 | if (need_pass_2) | |
3251 | return; | |
3252 | ||
08ce71f5 RH |
3253 | #ifndef NO_LISTING |
3254 | #ifdef OBJ_ELF | |
3255 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3256 | appear as a four byte positive constant in the .line section, | |
3257 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3258 | { | |
3259 | static int dwarf_line = -1; | |
3260 | ||
3261 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3262 | dwarf_line = -1; | |
3263 | else if (dwarf_line >= 0 | |
3264 | && nbytes == 2 | |
3265 | && exp->X_op == O_constant | |
3266 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3267 | listing_source_line ((unsigned int) dwarf_line); | |
3268 | else if (nbytes == 4 | |
3269 | && exp->X_op == O_constant | |
3270 | && exp->X_add_number >= 0) | |
3271 | dwarf_line = exp->X_add_number; | |
3272 | else | |
3273 | dwarf_line = -1; | |
3274 | } | |
d341ae3f DE |
3275 | |
3276 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3277 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3278 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3279 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3280 | file. We look for that case here. */ | |
3281 | { | |
3282 | static int dwarf_file = 0; | |
3283 | ||
3284 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3285 | dwarf_file = 0; | |
3286 | else if (dwarf_file == 0 | |
3287 | && nbytes == 2 | |
3288 | && exp->X_op == O_constant | |
3289 | && exp->X_add_number == 0x11) | |
3290 | dwarf_file = 1; | |
3291 | else if (dwarf_file == 1 | |
3292 | && nbytes == 2 | |
3293 | && exp->X_op == O_constant | |
3294 | && exp->X_add_number == 0x12) | |
3295 | dwarf_file = 2; | |
3296 | else if (dwarf_file == 2 | |
3297 | && nbytes == 4) | |
3298 | dwarf_file = 3; | |
3299 | else if (dwarf_file == 3 | |
3300 | && nbytes == 2 | |
3301 | && exp->X_op == O_constant | |
3302 | && exp->X_add_number == 0x38) | |
3303 | dwarf_file = 4; | |
3304 | else | |
3305 | dwarf_file = 0; | |
3306 | ||
3307 | /* The variable dwarf_file_string tells stringer that the string | |
3308 | may be the name of the source file. */ | |
3309 | if (dwarf_file == 4) | |
3310 | dwarf_file_string = 1; | |
3311 | else | |
3312 | dwarf_file_string = 0; | |
3313 | } | |
08ce71f5 RH |
3314 | #endif |
3315 | #endif | |
3316 | ||
5ac34ac3 | 3317 | op = exp->X_op; |
40324362 | 3318 | |
e28c40d7 ILT |
3319 | /* Allow `.word 0' in the absolute section. */ |
3320 | if (now_seg == absolute_section) | |
3321 | { | |
3322 | if (op != O_constant || exp->X_add_number != 0) | |
3323 | as_bad ("attempt to store value in absolute section"); | |
3324 | abs_section_offset += nbytes; | |
3325 | return; | |
3326 | } | |
3327 | ||
80aab579 ILT |
3328 | /* Handle a negative bignum. */ |
3329 | if (op == O_uminus | |
3330 | && exp->X_add_number == 0 | |
3331 | && exp->X_add_symbol->sy_value.X_op == O_big | |
3332 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
3333 | { | |
3334 | int i; | |
3335 | unsigned long carry; | |
3336 | ||
3337 | exp = &exp->X_add_symbol->sy_value; | |
3338 | ||
3339 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3340 | carry = 1; | |
3341 | for (i = 0; i < exp->X_add_number; i++) | |
3342 | { | |
3343 | unsigned long next; | |
3344 | ||
3345 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
3346 | & LITTLENUM_MASK) | |
3347 | + carry); | |
3348 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3349 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3350 | } | |
3351 | ||
3352 | /* We can ignore any carry out, because it will be handled by | |
3353 | extra_digit if it is needed. */ | |
3354 | ||
3355 | extra_digit = (valueT) -1; | |
3356 | op = O_big; | |
3357 | } | |
3358 | ||
5ac34ac3 | 3359 | if (op == O_absent || op == O_illegal) |
6efd877d | 3360 | { |
5ac34ac3 ILT |
3361 | as_warn ("zero assumed for missing expression"); |
3362 | exp->X_add_number = 0; | |
3363 | op = O_constant; | |
6efd877d | 3364 | } |
80aab579 | 3365 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 3366 | { |
80aab579 | 3367 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 3368 | exp->X_add_number = 0; |
5ac34ac3 | 3369 | op = O_constant; |
40324362 | 3370 | } |
5ac34ac3 | 3371 | else if (op == O_register) |
6efd877d | 3372 | { |
5ac34ac3 ILT |
3373 | as_warn ("register value used as expression"); |
3374 | op = O_constant; | |
40324362 | 3375 | } |
6efd877d | 3376 | |
604633ae | 3377 | p = frag_more ((int) nbytes); |
6efd877d | 3378 | |
40324362 KR |
3379 | #ifndef WORKING_DOT_WORD |
3380 | /* If we have the difference of two symbols in a word, save it on | |
3381 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 3382 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
3383 | { |
3384 | struct broken_word *x; | |
3385 | ||
3386 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3387 | x->next_broken_word = broken_words; | |
3388 | broken_words = x; | |
3389 | x->frag = frag_now; | |
3390 | x->word_goes_here = p; | |
3391 | x->dispfrag = 0; | |
3392 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 3393 | x->sub = exp->X_op_symbol; |
40324362 KR |
3394 | x->addnum = exp->X_add_number; |
3395 | x->added = 0; | |
3396 | new_broken_words++; | |
3397 | return; | |
3398 | } | |
f8701a3f | 3399 | #endif |
6efd877d | 3400 | |
80aab579 ILT |
3401 | /* If we have an integer, but the number of bytes is too large to |
3402 | pass to md_number_to_chars, handle it as a bignum. */ | |
3403 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3404 | { | |
3405 | valueT val; | |
3406 | int gencnt; | |
3407 | ||
3408 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
3409 | extra_digit = (valueT) -1; | |
3410 | val = (valueT) exp->X_add_number; | |
3411 | gencnt = 0; | |
3412 | do | |
3413 | { | |
3414 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
3415 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
3416 | ++gencnt; | |
3417 | } | |
3418 | while (val != 0); | |
3419 | op = exp->X_op = O_big; | |
3420 | exp->X_add_number = gencnt; | |
3421 | } | |
3422 | ||
5ac34ac3 | 3423 | if (op == O_constant) |
40324362 | 3424 | { |
44ce2f32 DE |
3425 | register valueT get; |
3426 | register valueT use; | |
3427 | register valueT mask; | |
6468dabd | 3428 | valueT hibit; |
44ce2f32 | 3429 | register valueT unmask; |
40324362 KR |
3430 | |
3431 | /* JF << of >= number of bits in the object is undefined. In | |
3432 | particular SPARC (Sun 4) has problems */ | |
44ce2f32 | 3433 | if (nbytes >= sizeof (valueT)) |
6468dabd ILT |
3434 | { |
3435 | mask = 0; | |
3436 | if (nbytes > sizeof (valueT)) | |
3437 | hibit = 0; | |
3438 | else | |
3439 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3440 | } | |
40324362 | 3441 | else |
6468dabd ILT |
3442 | { |
3443 | /* Don't store these bits. */ | |
3444 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); | |
3445 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3446 | } | |
6efd877d | 3447 | |
40324362 | 3448 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 3449 | |
40324362 KR |
3450 | #ifdef NEVER |
3451 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
3452 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
3453 | #endif | |
6efd877d | 3454 | |
40324362 KR |
3455 | get = exp->X_add_number; |
3456 | use = get & unmask; | |
6468dabd ILT |
3457 | if ((get & mask) != 0 |
3458 | && ((get & mask) != mask | |
3459 | || (get & hibit) == 0)) | |
40324362 | 3460 | { /* Leading bits contain both 0s & 1s. */ |
a69e5977 ILT |
3461 | as_warn ("Value 0x%lx truncated to 0x%lx.", |
3462 | (unsigned long) get, (unsigned long) use); | |
40324362 | 3463 | } |
604633ae | 3464 | /* put bytes in right order. */ |
44ce2f32 | 3465 | md_number_to_chars (p, use, (int) nbytes); |
40324362 | 3466 | } |
80aab579 ILT |
3467 | else if (op == O_big) |
3468 | { | |
3469 | int size; | |
3470 | LITTLENUM_TYPE *nums; | |
3471 | ||
3472 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3473 | ||
3474 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3475 | if (nbytes < size) | |
3476 | { | |
3477 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
3478 | size = nbytes; | |
3479 | } | |
3480 | ||
3481 | if (target_big_endian) | |
3482 | { | |
3483 | while (nbytes > size) | |
3484 | { | |
3485 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3486 | nbytes -= CHARS_PER_LITTLENUM; | |
3487 | p += CHARS_PER_LITTLENUM; | |
3488 | } | |
3489 | ||
3490 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
3491 | while (size > 0) | |
3492 | { | |
3493 | --nums; | |
3494 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3495 | size -= CHARS_PER_LITTLENUM; | |
3496 | p += CHARS_PER_LITTLENUM; | |
3497 | } | |
3498 | } | |
3499 | else | |
3500 | { | |
3501 | nums = generic_bignum; | |
3502 | while (size > 0) | |
3503 | { | |
3504 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3505 | ++nums; | |
3506 | size -= CHARS_PER_LITTLENUM; | |
3507 | p += CHARS_PER_LITTLENUM; | |
3508 | nbytes -= CHARS_PER_LITTLENUM; | |
3509 | } | |
3510 | ||
3511 | while (nbytes > 0) | |
3512 | { | |
3513 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3514 | nbytes -= CHARS_PER_LITTLENUM; | |
3515 | p += CHARS_PER_LITTLENUM; | |
3516 | } | |
3517 | } | |
3518 | } | |
40324362 KR |
3519 | else |
3520 | { | |
1fbfe108 | 3521 | memset (p, 0, nbytes); |
6efd877d | 3522 | |
40324362 KR |
3523 | /* Now we need to generate a fixS to record the symbol value. |
3524 | This is easy for BFD. For other targets it can be more | |
3525 | complex. For very complex cases (currently, the HPPA and | |
3526 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3527 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3528 | the name of the reloc code that should be stored in the fixS. | |
3529 | If neither is defined, the code uses NO_RELOC if it is | |
3530 | defined, and otherwise uses 0. */ | |
6efd877d | 3531 | |
40324362 | 3532 | #ifdef BFD_ASSEMBLER |
4064305e SS |
3533 | #ifdef TC_CONS_FIX_NEW |
3534 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3535 | #else | |
a69e5977 ILT |
3536 | { |
3537 | bfd_reloc_code_real_type r; | |
3538 | ||
3539 | switch (nbytes) | |
3540 | { | |
3541 | case 1: | |
3542 | r = BFD_RELOC_8; | |
3543 | break; | |
3544 | case 2: | |
3545 | r = BFD_RELOC_16; | |
3546 | break; | |
3547 | case 4: | |
3548 | r = BFD_RELOC_32; | |
3549 | break; | |
3550 | case 8: | |
3551 | r = BFD_RELOC_64; | |
3552 | break; | |
3553 | default: | |
3554 | as_bad ("unsupported BFD relocation size %u", nbytes); | |
3555 | r = BFD_RELOC_32; | |
3556 | break; | |
3557 | } | |
3558 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3559 | 0, r); | |
3560 | } | |
4064305e | 3561 | #endif |
40324362 KR |
3562 | #else |
3563 | #ifdef TC_CONS_FIX_NEW | |
3564 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3565 | #else | |
3566 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3567 | it is defined, otherwise use NO_RELOC if it is defined, | |
3568 | otherwise use 0. */ | |
3569 | #ifndef TC_CONS_RELOC | |
3570 | #ifdef NO_RELOC | |
3571 | #define TC_CONS_RELOC NO_RELOC | |
3572 | #else | |
3573 | #define TC_CONS_RELOC 0 | |
3574 | #endif | |
3575 | #endif | |
80aab579 | 3576 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3577 | TC_CONS_RELOC); |
40324362 KR |
3578 | #endif /* TC_CONS_FIX_NEW */ |
3579 | #endif /* BFD_ASSEMBLER */ | |
3580 | } | |
3581 | } | |
3582 | \f | |
3583 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 3584 | |
40324362 KR |
3585 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
3586 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3587 | then pack them all together. We do a little better in that we allow | |
3588 | them in words, longs, etc. and we'll pack them in target byte order | |
3589 | for you. | |
6efd877d | 3590 | |
40324362 KR |
3591 | The rules are: pack least significat bit first, if a field doesn't |
3592 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3593 | explicitly *not* even a warning. The bitwidth should be considered | |
3594 | a "mask". | |
6efd877d | 3595 | |
40324362 KR |
3596 | To use this function the tc-XXX.h file should define |
3597 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 3598 | |
40324362 KR |
3599 | static void |
3600 | parse_bitfield_cons (exp, nbytes) | |
3601 | expressionS *exp; | |
3602 | unsigned int nbytes; | |
3603 | { | |
3604 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3605 | char *hold = input_line_pointer; | |
f8701a3f | 3606 | |
5ac34ac3 | 3607 | (void) expression (exp); |
f8701a3f | 3608 | |
40324362 KR |
3609 | if (*input_line_pointer == ':') |
3610 | { /* bitfields */ | |
3611 | long value = 0; | |
f8701a3f | 3612 | |
40324362 KR |
3613 | for (;;) |
3614 | { | |
3615 | unsigned long width; | |
f8701a3f | 3616 | |
40324362 KR |
3617 | if (*input_line_pointer != ':') |
3618 | { | |
3619 | input_line_pointer = hold; | |
3620 | break; | |
3621 | } /* next piece is not a bitfield */ | |
3622 | ||
3623 | /* In the general case, we can't allow | |
3624 | full expressions with symbol | |
3625 | differences and such. The relocation | |
3626 | entries for symbols not defined in this | |
3627 | assembly would require arbitrary field | |
3628 | widths, positions, and masks which most | |
3629 | of our current object formats don't | |
3630 | support. | |
cd3b81bd | 3631 | |
40324362 KR |
3632 | In the specific case where a symbol |
3633 | *is* defined in this assembly, we | |
3634 | *could* build fixups and track it, but | |
3635 | this could lead to confusion for the | |
3636 | backends. I'm lazy. I'll take any | |
3637 | SEG_ABSOLUTE. I think that means that | |
3638 | you can use a previous .set or | |
3639 | .equ type symbol. xoxorich. */ | |
3640 | ||
5ac34ac3 | 3641 | if (exp->X_op == O_absent) |
6efd877d | 3642 | { |
5ac34ac3 | 3643 | as_warn ("using a bit field width of zero"); |
40324362 | 3644 | exp->X_add_number = 0; |
5ac34ac3 | 3645 | exp->X_op = O_constant; |
40324362 KR |
3646 | } /* implied zero width bitfield */ |
3647 | ||
5ac34ac3 | 3648 | if (exp->X_op != O_constant) |
6efd877d | 3649 | { |
40324362 | 3650 | *input_line_pointer = '\0'; |
5ac34ac3 | 3651 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3652 | *input_line_pointer = ':'; |
3653 | demand_empty_rest_of_line (); | |
3654 | return; | |
3655 | } /* too complex */ | |
3656 | ||
3657 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 3658 | { |
80aab579 | 3659 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
3660 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
3661 | width = BITS_PER_CHAR * nbytes; | |
3662 | } /* too big */ | |
3663 | ||
3664 | if (width > bits_available) | |
9471a360 | 3665 | { |
40324362 KR |
3666 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
3667 | input_line_pointer = hold; | |
3668 | exp->X_add_number = value; | |
3669 | break; | |
3670 | } /* won't fit */ | |
3671 | ||
3672 | hold = ++input_line_pointer; /* skip ':' */ | |
3673 | ||
5ac34ac3 ILT |
3674 | (void) expression (exp); |
3675 | if (exp->X_op != O_constant) | |
9471a360 | 3676 | { |
40324362 KR |
3677 | char cache = *input_line_pointer; |
3678 | ||
3679 | *input_line_pointer = '\0'; | |
5ac34ac3 | 3680 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3681 | *input_line_pointer = cache; |
3682 | demand_empty_rest_of_line (); | |
3683 | return; | |
3684 | } /* too complex */ | |
3685 | ||
5ac34ac3 ILT |
3686 | value |= ((~(-1 << width) & exp->X_add_number) |
3687 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
3688 | |
3689 | if ((bits_available -= width) == 0 | |
3690 | || is_it_end_of_statement () | |
3691 | || *input_line_pointer != ',') | |
3692 | { | |
3693 | break; | |
3694 | } /* all the bitfields we're gonna get */ | |
3695 | ||
3696 | hold = ++input_line_pointer; | |
5ac34ac3 | 3697 | (void) expression (exp); |
40324362 KR |
3698 | } /* forever loop */ |
3699 | ||
3700 | exp->X_add_number = value; | |
5ac34ac3 | 3701 | exp->X_op = O_constant; |
80aab579 | 3702 | exp->X_unsigned = 1; |
40324362 KR |
3703 | } /* if looks like a bitfield */ |
3704 | } /* parse_bitfield_cons() */ | |
3705 | ||
3706 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3707 | \f | |
1356d77d | 3708 | /* Handle an MRI style string expression. */ |
40324362 KR |
3709 | |
3710 | static void | |
3711 | parse_mri_cons (exp, nbytes) | |
3712 | expressionS *exp; | |
3713 | unsigned int nbytes; | |
3714 | { | |
1356d77d ILT |
3715 | if (*input_line_pointer != '\'' |
3716 | && (input_line_pointer[1] != '\'' | |
3717 | || (*input_line_pointer != 'A' | |
3718 | && *input_line_pointer != 'E'))) | |
3719 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3720 | else | |
40324362 | 3721 | { |
40324362 KR |
3722 | int scan = 0; |
3723 | unsigned int result = 0; | |
1356d77d ILT |
3724 | |
3725 | /* An MRI style string. Cut into as many bytes as will fit into | |
3726 | a nbyte chunk, left justify if necessary, and separate with | |
3727 | commas so we can try again later. */ | |
3728 | if (*input_line_pointer == 'A') | |
3729 | ++input_line_pointer; | |
3730 | else if (*input_line_pointer == 'E') | |
3731 | { | |
3732 | as_bad ("EBCDIC constants are not supported"); | |
3733 | ++input_line_pointer; | |
3734 | } | |
3735 | ||
40324362 KR |
3736 | input_line_pointer++; |
3737 | for (scan = 0; scan < nbytes; scan++) | |
3738 | { | |
3739 | if (*input_line_pointer == '\'') | |
3740 | { | |
3741 | if (input_line_pointer[1] == '\'') | |
6efd877d | 3742 | { |
40324362 | 3743 | input_line_pointer++; |
f8701a3f | 3744 | } |
40324362 KR |
3745 | else |
3746 | break; | |
9471a360 | 3747 | } |
40324362 KR |
3748 | result = (result << 8) | (*input_line_pointer++); |
3749 | } | |
f8701a3f | 3750 | |
40324362 KR |
3751 | /* Left justify */ |
3752 | while (scan < nbytes) | |
3753 | { | |
3754 | result <<= 8; | |
3755 | scan++; | |
3756 | } | |
3757 | /* Create correct expression */ | |
5ac34ac3 | 3758 | exp->X_op = O_constant; |
40324362 | 3759 | exp->X_add_number = result; |
40324362 KR |
3760 | /* Fake it so that we can read the next char too */ |
3761 | if (input_line_pointer[0] != '\'' || | |
3762 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3763 | { | |
3764 | input_line_pointer -= 2; | |
3765 | input_line_pointer[0] = ','; | |
3766 | input_line_pointer[1] = '\''; | |
3767 | } | |
3768 | else | |
3769 | input_line_pointer++; | |
3770 | } | |
40324362 | 3771 | } |
40324362 KR |
3772 | \f |
3773 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3774 | ||
3775 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3776 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3777 | object file COUNT times. | |
3778 | ||
3779 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3780 | ||
3781 | static void | |
3782 | parse_repeat_cons (exp, nbytes) | |
3783 | expressionS *exp; | |
3784 | unsigned int nbytes; | |
3785 | { | |
3786 | expressionS count; | |
40324362 KR |
3787 | register int i; |
3788 | ||
3789 | expression (exp); | |
3790 | ||
3791 | if (*input_line_pointer != ':') | |
3792 | { | |
3793 | /* No repeat count. */ | |
3794 | return; | |
3795 | } | |
3796 | ||
3797 | ++input_line_pointer; | |
5ac34ac3 ILT |
3798 | expression (&count); |
3799 | if (count.X_op != O_constant | |
40324362 KR |
3800 | || count.X_add_number <= 0) |
3801 | { | |
3802 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
3803 | return; | |
3804 | } | |
3805 | ||
3806 | /* The cons function is going to output this expression once. So we | |
3807 | output it count - 1 times. */ | |
3808 | for (i = count.X_add_number - 1; i > 0; i--) | |
3809 | emit_expr (exp, nbytes); | |
3810 | } | |
3811 | ||
3812 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 3813 | \f |
e28c40d7 ILT |
3814 | /* Parse a floating point number represented as a hex constant. This |
3815 | permits users to specify the exact bits they want in the floating | |
3816 | point number. */ | |
3817 | ||
3818 | static int | |
3819 | hex_float (float_type, bytes) | |
3820 | int float_type; | |
3821 | char *bytes; | |
3822 | { | |
3823 | int length; | |
3824 | int i; | |
3825 | ||
3826 | switch (float_type) | |
3827 | { | |
3828 | case 'f': | |
3829 | case 'F': | |
3830 | case 's': | |
3831 | case 'S': | |
3832 | length = 4; | |
3833 | break; | |
3834 | ||
3835 | case 'd': | |
3836 | case 'D': | |
3837 | case 'r': | |
3838 | case 'R': | |
3839 | length = 8; | |
3840 | break; | |
3841 | ||
3842 | case 'x': | |
3843 | case 'X': | |
3844 | length = 12; | |
3845 | break; | |
3846 | ||
3847 | case 'p': | |
3848 | case 'P': | |
3849 | length = 12; | |
3850 | break; | |
3851 | ||
3852 | default: | |
3853 | as_bad ("Unknown floating type type '%c'", float_type); | |
3854 | return -1; | |
3855 | } | |
3856 | ||
3857 | /* It would be nice if we could go through expression to parse the | |
3858 | hex constant, but if we get a bignum it's a pain to sort it into | |
3859 | the buffer correctly. */ | |
3860 | i = 0; | |
3861 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
3862 | { | |
3863 | int d; | |
3864 | ||
3865 | /* The MRI assembler accepts arbitrary underscores strewn about | |
3866 | through the hex constant, so we ignore them as well. */ | |
3867 | if (*input_line_pointer == '_') | |
3868 | { | |
3869 | ++input_line_pointer; | |
3870 | continue; | |
3871 | } | |
3872 | ||
3873 | if (i >= length) | |
3874 | { | |
3875 | as_warn ("Floating point constant too large"); | |
3876 | return -1; | |
3877 | } | |
3878 | d = hex_value (*input_line_pointer) << 4; | |
3879 | ++input_line_pointer; | |
3880 | while (*input_line_pointer == '_') | |
3881 | ++input_line_pointer; | |
3882 | if (hex_p (*input_line_pointer)) | |
3883 | { | |
3884 | d += hex_value (*input_line_pointer); | |
3885 | ++input_line_pointer; | |
3886 | } | |
a920b693 ILT |
3887 | if (target_big_endian) |
3888 | bytes[i] = d; | |
3889 | else | |
3890 | bytes[length - i - 1] = d; | |
3891 | ++i; | |
e28c40d7 ILT |
3892 | } |
3893 | ||
3894 | if (i < length) | |
a920b693 ILT |
3895 | { |
3896 | if (target_big_endian) | |
3897 | memset (bytes + i, 0, length - i); | |
3898 | else | |
3899 | memset (bytes, 0, length - i); | |
3900 | } | |
e28c40d7 ILT |
3901 | |
3902 | return length; | |
3903 | } | |
3904 | ||
fecd2382 RP |
3905 | /* |
3906 | * float_cons() | |
3907 | * | |
3908 | * CONStruct some more frag chars of .floats .ffloats etc. | |
3909 | * Makes 0 or more new frags. | |
3910 | * If need_pass_2 == 1, no frags are emitted. | |
3911 | * This understands only floating literals, not expressions. Sorry. | |
3912 | * | |
3913 | * A floating constant is defined by atof_generic(), except it is preceded | |
3914 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
3915 | * reading, I decided to be incompatible. This always tries to give you | |
3916 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
3917 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
3918 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
3919 | * scanners you directed AS to use. | |
3920 | * | |
3921 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
3922 | * | |
3923 | */ | |
3924 | ||
ba71c54d KR |
3925 | void |
3926 | float_cons (float_type) | |
6efd877d | 3927 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 3928 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 3929 | { |
6efd877d | 3930 | register char *p; |
6efd877d KR |
3931 | int length; /* Number of chars in an object. */ |
3932 | register char *err; /* Error from scanning floating literal. */ | |
3933 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 3934 | |
6efd877d | 3935 | if (is_it_end_of_statement ()) |
f8701a3f | 3936 | { |
1e9cf565 ILT |
3937 | demand_empty_rest_of_line (); |
3938 | return; | |
f8701a3f | 3939 | } |
1e9cf565 | 3940 | |
a69e5977 ILT |
3941 | #ifdef md_flush_pending_output |
3942 | md_flush_pending_output (); | |
3943 | #endif | |
3944 | ||
1e9cf565 | 3945 | do |
f8701a3f SC |
3946 | { |
3947 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 3948 | SKIP_WHITESPACE (); |
1e9cf565 | 3949 | |
f8701a3f SC |
3950 | /* Skip any 0{letter} that may be present. Don't even check if the |
3951 | * letter is legal. Someone may invent a "z" format and this routine | |
3952 | * has no use for such information. Lusers beware: you get | |
3953 | * diagnostics if your input is ill-conditioned. | |
3954 | */ | |
6efd877d KR |
3955 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
3956 | input_line_pointer += 2; | |
f8701a3f | 3957 | |
1356d77d ILT |
3958 | /* Accept :xxxx, where the x's are hex digits, for a floating |
3959 | point with the exact digits specified. */ | |
3960 | if (input_line_pointer[0] == ':') | |
f8701a3f | 3961 | { |
e28c40d7 ILT |
3962 | ++input_line_pointer; |
3963 | length = hex_float (float_type, temp); | |
3964 | if (length < 0) | |
1356d77d | 3965 | { |
1356d77d ILT |
3966 | ignore_rest_of_line (); |
3967 | return; | |
3968 | } | |
1356d77d ILT |
3969 | } |
3970 | else | |
3971 | { | |
3972 | err = md_atof (float_type, temp, &length); | |
3973 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3974 | know (length > 0); | |
3975 | if (err) | |
3976 | { | |
3977 | as_bad ("Bad floating literal: %s", err); | |
3978 | ignore_rest_of_line (); | |
3979 | return; | |
3980 | } | |
f8701a3f | 3981 | } |
1e9cf565 ILT |
3982 | |
3983 | if (!need_pass_2) | |
f8701a3f | 3984 | { |
1e9cf565 ILT |
3985 | int count; |
3986 | ||
3987 | count = 1; | |
3988 | ||
3989 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3990 | if (*input_line_pointer == ':') | |
3991 | { | |
1e9cf565 ILT |
3992 | expressionS count_exp; |
3993 | ||
3994 | ++input_line_pointer; | |
5ac34ac3 ILT |
3995 | expression (&count_exp); |
3996 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
3997 | || count_exp.X_add_number <= 0) |
3998 | { | |
5ac34ac3 | 3999 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
4000 | } |
4001 | else | |
4002 | count = count_exp.X_add_number; | |
4003 | } | |
4004 | #endif | |
4005 | ||
4006 | while (--count >= 0) | |
a39116f1 | 4007 | { |
f8701a3f | 4008 | p = frag_more (length); |
604633ae | 4009 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 4010 | } |
542e1629 | 4011 | } |
1e9cf565 | 4012 | SKIP_WHITESPACE (); |
f8701a3f | 4013 | } |
1e9cf565 ILT |
4014 | while (*input_line_pointer++ == ','); |
4015 | ||
4016 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 4017 | demand_empty_rest_of_line (); |
f8701a3f | 4018 | } /* float_cons() */ |
fecd2382 | 4019 | \f |
cd924033 ILT |
4020 | /* Return the size of a LEB128 value */ |
4021 | ||
4022 | static inline int | |
4023 | sizeof_sleb128 (value) | |
4024 | offsetT value; | |
4025 | { | |
4026 | register int size = 0; | |
4027 | register unsigned byte; | |
4028 | ||
4029 | do | |
4030 | { | |
4031 | byte = (value & 0x7f); | |
4032 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4033 | Fortunately, we can structure things so that the extra work reduces | |
4034 | to a noop on systems that do things "properly". */ | |
4035 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4036 | size += 1; | |
4037 | } | |
4038 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4039 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4040 | ||
4041 | return size; | |
4042 | } | |
4043 | ||
4044 | static inline int | |
4045 | sizeof_uleb128 (value) | |
4046 | valueT value; | |
4047 | { | |
4048 | register int size = 0; | |
4049 | register unsigned byte; | |
4050 | ||
4051 | do | |
4052 | { | |
4053 | byte = (value & 0x7f); | |
4054 | value >>= 7; | |
4055 | size += 1; | |
4056 | } | |
4057 | while (value != 0); | |
4058 | ||
4059 | return size; | |
4060 | } | |
4061 | ||
4062 | inline int | |
4063 | sizeof_leb128 (value, sign) | |
4064 | valueT value; | |
4065 | int sign; | |
4066 | { | |
4067 | if (sign) | |
4068 | return sizeof_sleb128 ((offsetT) value); | |
4069 | else | |
4070 | return sizeof_uleb128 (value); | |
4071 | } | |
4072 | ||
4073 | /* Output a LEB128 value. */ | |
4074 | ||
4075 | static inline int | |
4076 | output_sleb128 (p, value) | |
4077 | char *p; | |
4078 | offsetT value; | |
4079 | { | |
4080 | register char *orig = p; | |
4081 | register int more; | |
4082 | ||
4083 | do | |
4084 | { | |
4085 | unsigned byte = (value & 0x7f); | |
4086 | ||
4087 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4088 | Fortunately, we can structure things so that the extra work reduces | |
4089 | to a noop on systems that do things "properly". */ | |
4090 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4091 | ||
4092 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4093 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4094 | if (more) | |
4095 | byte |= 0x80; | |
4096 | ||
4097 | *p++ = byte; | |
4098 | } | |
4099 | while (more); | |
4100 | ||
4101 | return p - orig; | |
4102 | } | |
4103 | ||
4104 | static inline int | |
4105 | output_uleb128 (p, value) | |
4106 | char *p; | |
4107 | valueT value; | |
4108 | { | |
4109 | char *orig = p; | |
4110 | ||
4111 | do | |
4112 | { | |
4113 | unsigned byte = (value & 0x7f); | |
4114 | value >>= 7; | |
4115 | if (value != 0) | |
4116 | /* More bytes to follow. */ | |
4117 | byte |= 0x80; | |
4118 | ||
4119 | *p++ = byte; | |
4120 | } | |
4121 | while (value != 0); | |
4122 | ||
4123 | return p - orig; | |
4124 | } | |
4125 | ||
4126 | inline int | |
4127 | output_leb128 (p, value, sign) | |
4128 | char *p; | |
4129 | valueT value; | |
4130 | int sign; | |
4131 | { | |
4132 | if (sign) | |
4133 | return output_sleb128 (p, (offsetT) value); | |
4134 | else | |
4135 | return output_uleb128 (p, value); | |
4136 | } | |
4137 | ||
4138 | /* Do the same for bignums. We combine sizeof with output here in that | |
4139 | we don't output for NULL values of P. It isn't really as critical as | |
4140 | for "normal" values that this be streamlined. */ | |
4141 | ||
4142 | static int | |
4143 | output_big_sleb128 (p, bignum, size) | |
4144 | char *p; | |
4145 | LITTLENUM_TYPE *bignum; | |
4146 | int size; | |
4147 | { | |
4148 | char *orig = p; | |
4149 | valueT val; | |
4150 | int loaded = 0; | |
4151 | unsigned byte; | |
4152 | ||
4153 | /* Strip leading sign extensions off the bignum. */ | |
4154 | while (size > 0 && bignum[size-1] == (LITTLENUM_TYPE)-1) | |
4155 | size--; | |
4156 | ||
4157 | do | |
4158 | { | |
4159 | if (loaded < 7 && size > 0) | |
4160 | { | |
4161 | val |= (*bignum << loaded); | |
4162 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4163 | size--; | |
4164 | bignum++; | |
4165 | } | |
4166 | ||
4167 | byte = val & 0x7f; | |
4168 | loaded -= 7; | |
4169 | val >>= 7; | |
4170 | ||
4171 | if (size == 0) | |
4172 | { | |
4173 | if ((val == 0 && (byte & 0x40) == 0) | |
4174 | || (~(val | ~(((valueT)1 << loaded) - 1)) == 0 | |
4175 | && (byte & 0x40) != 0)) | |
4176 | byte |= 0x80; | |
4177 | } | |
4178 | ||
4179 | if (orig) | |
4180 | *p = byte; | |
4181 | p++; | |
4182 | } | |
4183 | while (byte & 0x80); | |
4184 | ||
4185 | return p - orig; | |
4186 | } | |
4187 | ||
4188 | static int | |
4189 | output_big_uleb128 (p, bignum, size) | |
4190 | char *p; | |
4191 | LITTLENUM_TYPE *bignum; | |
4192 | int size; | |
4193 | { | |
4194 | char *orig = p; | |
4195 | valueT val; | |
4196 | int loaded = 0; | |
4197 | unsigned byte; | |
4198 | ||
4199 | /* Strip leading zeros off the bignum. */ | |
4200 | /* XXX: Is this needed? */ | |
4201 | while (size > 0 && bignum[size-1] == 0) | |
4202 | size--; | |
4203 | ||
4204 | do | |
4205 | { | |
4206 | if (loaded < 7 && size > 0) | |
4207 | { | |
4208 | val |= (*bignum << loaded); | |
4209 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4210 | size--; | |
4211 | bignum++; | |
4212 | } | |
4213 | ||
4214 | byte = val & 0x7f; | |
4215 | loaded -= 7; | |
4216 | val >>= 7; | |
4217 | ||
4218 | if (size > 0 || val) | |
4219 | byte |= 0x80; | |
4220 | ||
4221 | if (orig) | |
4222 | *p = byte; | |
4223 | p++; | |
4224 | } | |
4225 | while (byte & 0x80); | |
4226 | ||
4227 | return p - orig; | |
4228 | } | |
4229 | ||
4230 | static inline int | |
4231 | output_big_leb128 (p, bignum, size, sign) | |
4232 | char *p; | |
4233 | LITTLENUM_TYPE *bignum; | |
4234 | int size, sign; | |
4235 | { | |
4236 | if (sign) | |
4237 | return output_big_sleb128 (p, bignum, size); | |
4238 | else | |
4239 | return output_big_uleb128 (p, bignum, size); | |
4240 | } | |
4241 | ||
4242 | /* Generate the appropriate fragments for a given expression to emit a | |
4243 | leb128 value. */ | |
4244 | ||
4245 | void | |
4246 | emit_leb128_expr(exp, sign) | |
4247 | expressionS *exp; | |
4248 | int sign; | |
4249 | { | |
4250 | operatorT op = exp->X_op; | |
4251 | ||
4252 | if (op == O_absent || op == O_illegal) | |
4253 | { | |
4254 | as_warn ("zero assumed for missing expression"); | |
4255 | exp->X_add_number = 0; | |
4256 | op = O_constant; | |
4257 | } | |
4258 | else if (op == O_big && exp->X_add_number <= 0) | |
4259 | { | |
4260 | as_bad ("floating point number invalid; zero assumed"); | |
4261 | exp->X_add_number = 0; | |
4262 | op = O_constant; | |
4263 | } | |
4264 | else if (op == O_register) | |
4265 | { | |
4266 | as_warn ("register value used as expression"); | |
4267 | op = O_constant; | |
4268 | } | |
4269 | ||
4270 | if (op == O_constant) | |
4271 | { | |
4272 | /* If we've got a constant, emit the thing directly right now. */ | |
4273 | ||
4274 | valueT value = exp->X_add_number; | |
4275 | int size; | |
4276 | char *p; | |
4277 | ||
4278 | size = sizeof_leb128 (value, sign); | |
4279 | p = frag_more (size); | |
4280 | output_leb128 (p, value, sign); | |
4281 | } | |
4282 | else if (op == O_big) | |
4283 | { | |
4284 | /* O_big is a different sort of constant. */ | |
4285 | ||
4286 | int size; | |
4287 | char *p; | |
4288 | ||
4289 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4290 | p = frag_more (size); | |
4291 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4292 | } | |
4293 | else | |
4294 | { | |
4295 | /* Otherwise, we have to create a variable sized fragment and | |
4296 | resolve things later. */ | |
4297 | ||
4298 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT)0), 0, sign, | |
4299 | make_expr_symbol (exp), 0, (char *) NULL); | |
4300 | } | |
4301 | } | |
4302 | ||
4303 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4304 | ||
4305 | void | |
4306 | s_leb128 (sign) | |
4307 | int sign; | |
4308 | { | |
4309 | expressionS exp; | |
4310 | ||
4311 | do { | |
4312 | expression (&exp); | |
4313 | emit_leb128_expr (&exp, sign); | |
4314 | } while (*input_line_pointer++ == ','); | |
4315 | ||
4316 | input_line_pointer--; | |
4317 | demand_empty_rest_of_line (); | |
4318 | } | |
4319 | \f | |
fecd2382 RP |
4320 | /* |
4321 | * stringer() | |
4322 | * | |
4323 | * We read 0 or more ',' seperated, double-quoted strings. | |
4324 | * | |
4325 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
4326 | */ | |
a39116f1 RP |
4327 | |
4328 | ||
6efd877d KR |
4329 | void |
4330 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
4331 | /* Checks end-of-line. */ | |
f8701a3f | 4332 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 4333 | { |
f8701a3f | 4334 | register unsigned int c; |
08ce71f5 | 4335 | char *start; |
6efd877d | 4336 | |
a2a5a4fa KR |
4337 | #ifdef md_flush_pending_output |
4338 | md_flush_pending_output (); | |
4339 | #endif | |
4340 | ||
f8701a3f SC |
4341 | /* |
4342 | * The following awkward logic is to parse ZERO or more strings, | |
4343 | * comma seperated. Recall a string expression includes spaces | |
4344 | * before the opening '\"' and spaces after the closing '\"'. | |
4345 | * We fake a leading ',' if there is (supposed to be) | |
4346 | * a 1st, expression. We keep demanding expressions for each | |
4347 | * ','. | |
4348 | */ | |
6efd877d KR |
4349 | if (is_it_end_of_statement ()) |
4350 | { | |
4351 | c = 0; /* Skip loop. */ | |
4352 | ++input_line_pointer; /* Compensate for end of loop. */ | |
4353 | } | |
f8701a3f | 4354 | else |
6efd877d KR |
4355 | { |
4356 | c = ','; /* Do loop. */ | |
4357 | } | |
4358 | while (c == ',' || c == '<' || c == '"') | |
4359 | { | |
4360 | SKIP_WHITESPACE (); | |
4361 | switch (*input_line_pointer) | |
4362 | { | |
4363 | case '\"': | |
4364 | ++input_line_pointer; /*->1st char of string. */ | |
08ce71f5 | 4365 | start = input_line_pointer; |
6efd877d KR |
4366 | while (is_a_char (c = next_char_of_string ())) |
4367 | { | |
4368 | FRAG_APPEND_1_CHAR (c); | |
4369 | } | |
4370 | if (append_zero) | |
4371 | { | |
4372 | FRAG_APPEND_1_CHAR (0); | |
4373 | } | |
4374 | know (input_line_pointer[-1] == '\"'); | |
08ce71f5 RH |
4375 | |
4376 | #ifndef NO_LISTING | |
4377 | #ifdef OBJ_ELF | |
4378 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d341ae3f DE |
4379 | will emit .string with a filename in the .debug section |
4380 | after a sequence of constants. See the comment in | |
4381 | emit_expr for the sequence. emit_expr will set | |
4382 | dwarf_file_string to non-zero if this string might be a | |
4383 | source file name. */ | |
4384 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4385 | dwarf_file_string = 0; | |
4386 | else if (dwarf_file_string) | |
08ce71f5 RH |
4387 | { |
4388 | c = input_line_pointer[-1]; | |
4389 | input_line_pointer[-1] = '\0'; | |
4390 | listing_source_file (start); | |
4391 | input_line_pointer[-1] = c; | |
4392 | } | |
4393 | #endif | |
4394 | #endif | |
4395 | ||
6efd877d KR |
4396 | break; |
4397 | case '<': | |
4398 | input_line_pointer++; | |
4399 | c = get_single_number (); | |
4400 | FRAG_APPEND_1_CHAR (c); | |
4401 | if (*input_line_pointer != '>') | |
4402 | { | |
4403 | as_bad ("Expected <nn>"); | |
4404 | } | |
4405 | input_line_pointer++; | |
4406 | break; | |
4407 | case ',': | |
4408 | input_line_pointer++; | |
4409 | break; | |
4410 | } | |
4411 | SKIP_WHITESPACE (); | |
4412 | c = *input_line_pointer; | |
f8701a3f | 4413 | } |
f8701a3f | 4414 | |
6efd877d KR |
4415 | demand_empty_rest_of_line (); |
4416 | } /* stringer() */ | |
fecd2382 | 4417 | \f |
6efd877d | 4418 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
4419 | high bits set. We'll probably also have trouble with |
4420 | multibyte chars, wide chars, etc. Also be careful about | |
4421 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 4422 | |
6efd877d KR |
4423 | unsigned int |
4424 | next_char_of_string () | |
4425 | { | |
4426 | register unsigned int c; | |
4427 | ||
4428 | c = *input_line_pointer++ & CHAR_MASK; | |
4429 | switch (c) | |
4430 | { | |
4431 | case '\"': | |
4432 | c = NOT_A_CHAR; | |
4433 | break; | |
4434 | ||
a69e5977 ILT |
4435 | case '\n': |
4436 | as_warn ("Unterminated string: Newline inserted."); | |
4437 | bump_line_counters (); | |
4438 | break; | |
4439 | ||
ddb393cf | 4440 | #ifndef NO_STRING_ESCAPES |
6efd877d KR |
4441 | case '\\': |
4442 | switch (c = *input_line_pointer++) | |
4443 | { | |
4444 | case 'b': | |
4445 | c = '\b'; | |
4446 | break; | |
4447 | ||
4448 | case 'f': | |
4449 | c = '\f'; | |
4450 | break; | |
4451 | ||
4452 | case 'n': | |
4453 | c = '\n'; | |
4454 | break; | |
4455 | ||
4456 | case 'r': | |
4457 | c = '\r'; | |
4458 | break; | |
4459 | ||
4460 | case 't': | |
4461 | c = '\t'; | |
4462 | break; | |
4463 | ||
6efd877d KR |
4464 | case 'v': |
4465 | c = '\013'; | |
4466 | break; | |
6efd877d KR |
4467 | |
4468 | case '\\': | |
4469 | case '"': | |
4470 | break; /* As itself. */ | |
4471 | ||
4472 | case '0': | |
4473 | case '1': | |
4474 | case '2': | |
4475 | case '3': | |
4476 | case '4': | |
4477 | case '5': | |
4478 | case '6': | |
4479 | case '7': | |
4480 | case '8': | |
4481 | case '9': | |
4482 | { | |
4483 | long number; | |
d4c8cbd8 | 4484 | int i; |
6efd877d | 4485 | |
d4c8cbd8 | 4486 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
4487 | { |
4488 | number = number * 8 + c - '0'; | |
4489 | } | |
4490 | c = number & 0xff; | |
4491 | } | |
4492 | --input_line_pointer; | |
4493 | break; | |
4494 | ||
d4c8cbd8 JL |
4495 | case 'x': |
4496 | case 'X': | |
4497 | { | |
4498 | long number; | |
4499 | ||
4500 | number = 0; | |
4501 | c = *input_line_pointer++; | |
4502 | while (isxdigit (c)) | |
4503 | { | |
4504 | if (isdigit (c)) | |
4505 | number = number * 16 + c - '0'; | |
4506 | else if (isupper (c)) | |
4507 | number = number * 16 + c - 'A' + 10; | |
4508 | else | |
4509 | number = number * 16 + c - 'a' + 10; | |
4510 | c = *input_line_pointer++; | |
4511 | } | |
4512 | c = number & 0xff; | |
4513 | --input_line_pointer; | |
4514 | } | |
4515 | break; | |
4516 | ||
6efd877d KR |
4517 | case '\n': |
4518 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
4519 | as_warn ("Unterminated string: Newline inserted."); | |
4520 | c = '\n'; | |
a69e5977 | 4521 | bump_line_counters (); |
6efd877d KR |
4522 | break; |
4523 | ||
4524 | default: | |
4525 | ||
fecd2382 | 4526 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
4527 | as_bad ("Bad escaped character in string, '?' assumed"); |
4528 | c = '?'; | |
fecd2382 | 4529 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
4530 | |
4531 | break; | |
4532 | } /* switch on escaped char */ | |
4533 | break; | |
ddb393cf | 4534 | #endif /* ! defined (NO_STRING_ESCAPES) */ |
6efd877d KR |
4535 | |
4536 | default: | |
4537 | break; | |
4538 | } /* switch on char */ | |
4539 | return (c); | |
4540 | } /* next_char_of_string() */ | |
fecd2382 RP |
4541 | \f |
4542 | static segT | |
f8701a3f | 4543 | get_segmented_expression (expP) |
6efd877d | 4544 | register expressionS *expP; |
fecd2382 | 4545 | { |
6efd877d | 4546 | register segT retval; |
f8701a3f | 4547 | |
9471a360 | 4548 | retval = expression (expP); |
5ac34ac3 ILT |
4549 | if (expP->X_op == O_illegal |
4550 | || expP->X_op == O_absent | |
4551 | || expP->X_op == O_big) | |
f8701a3f | 4552 | { |
5ac34ac3 ILT |
4553 | as_bad ("expected address expression; zero assumed"); |
4554 | expP->X_op = O_constant; | |
6efd877d | 4555 | expP->X_add_number = 0; |
5ac34ac3 | 4556 | retval = absolute_section; |
f8701a3f | 4557 | } |
5ac34ac3 | 4558 | return retval; |
fecd2382 RP |
4559 | } |
4560 | ||
6efd877d KR |
4561 | static segT |
4562 | get_known_segmented_expression (expP) | |
4563 | register expressionS *expP; | |
fecd2382 | 4564 | { |
6efd877d | 4565 | register segT retval; |
f8701a3f | 4566 | |
9471a360 | 4567 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 4568 | { |
5ac34ac3 ILT |
4569 | /* There is no easy way to extract the undefined symbol from the |
4570 | expression. */ | |
4571 | if (expP->X_add_symbol != NULL | |
4572 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4573 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
4574 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 4575 | else |
5ac34ac3 ILT |
4576 | as_warn ("some symbol undefined; zero assumed"); |
4577 | retval = absolute_section; | |
4578 | expP->X_op = O_constant; | |
6efd877d | 4579 | expP->X_add_number = 0; |
f8701a3f | 4580 | } |
5ac34ac3 | 4581 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 4582 | return (retval); |
fecd2382 RP |
4583 | } /* get_known_segmented_expression() */ |
4584 | ||
58d4951d | 4585 | offsetT |
f8701a3f | 4586 | get_absolute_expression () |
fecd2382 | 4587 | { |
6efd877d | 4588 | expressionS exp; |
f8701a3f | 4589 | |
5ac34ac3 ILT |
4590 | expression (&exp); |
4591 | if (exp.X_op != O_constant) | |
f8701a3f | 4592 | { |
5ac34ac3 | 4593 | if (exp.X_op != O_absent) |
cd3b81bd | 4594 | as_bad ("bad or irreducible absolute expression; zero assumed"); |
6efd877d | 4595 | exp.X_add_number = 0; |
f8701a3f | 4596 | } |
5ac34ac3 | 4597 | return exp.X_add_number; |
fecd2382 RP |
4598 | } |
4599 | ||
6efd877d KR |
4600 | char /* return terminator */ |
4601 | get_absolute_expression_and_terminator (val_pointer) | |
4602 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 4603 | { |
58d4951d ILT |
4604 | /* FIXME: val_pointer should probably be offsetT *. */ |
4605 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 4606 | return (*input_line_pointer++); |
fecd2382 RP |
4607 | } |
4608 | \f | |
4609 | /* | |
4610 | * demand_copy_C_string() | |
4611 | * | |
4612 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
4613 | * Give a warning if that happens. | |
4614 | */ | |
4615 | char * | |
f8701a3f | 4616 | demand_copy_C_string (len_pointer) |
6efd877d | 4617 | int *len_pointer; |
fecd2382 | 4618 | { |
6efd877d | 4619 | register char *s; |
f8701a3f | 4620 | |
6efd877d | 4621 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
4622 | { |
4623 | register int len; | |
4624 | ||
6594d6b9 | 4625 | for (len = *len_pointer; len > 0; len--) |
f8701a3f | 4626 | { |
6efd877d | 4627 | if (*s == 0) |
fecd2382 | 4628 | { |
f8701a3f SC |
4629 | s = 0; |
4630 | len = 1; | |
6efd877d KR |
4631 | *len_pointer = 0; |
4632 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 4633 | } |
f8701a3f SC |
4634 | } |
4635 | } | |
6594d6b9 | 4636 | return s; |
fecd2382 RP |
4637 | } |
4638 | \f | |
4639 | /* | |
4640 | * demand_copy_string() | |
4641 | * | |
4642 | * Demand string, but return a safe (=private) copy of the string. | |
4643 | * Return NULL if we can't read a string here. | |
4644 | */ | |
6ef37255 | 4645 | char * |
6efd877d KR |
4646 | demand_copy_string (lenP) |
4647 | int *lenP; | |
fecd2382 | 4648 | { |
6efd877d KR |
4649 | register unsigned int c; |
4650 | register int len; | |
4651 | char *retval; | |
4652 | ||
4653 | len = 0; | |
4654 | SKIP_WHITESPACE (); | |
4655 | if (*input_line_pointer == '\"') | |
4656 | { | |
4657 | input_line_pointer++; /* Skip opening quote. */ | |
4658 | ||
4659 | while (is_a_char (c = next_char_of_string ())) | |
4660 | { | |
4661 | obstack_1grow (¬es, c); | |
4662 | len++; | |
fecd2382 | 4663 | } |
42ac8fa8 ILT |
4664 | /* JF this next line is so demand_copy_C_string will return a |
4665 | null terminated string. */ | |
6efd877d KR |
4666 | obstack_1grow (¬es, '\0'); |
4667 | retval = obstack_finish (¬es); | |
4668 | } | |
4669 | else | |
4670 | { | |
4671 | as_warn ("Missing string"); | |
4672 | retval = NULL; | |
4673 | ignore_rest_of_line (); | |
4674 | } | |
4675 | *lenP = len; | |
4676 | return (retval); | |
4677 | } /* demand_copy_string() */ | |
fecd2382 RP |
4678 | \f |
4679 | /* | |
4680 | * is_it_end_of_statement() | |
4681 | * | |
4682 | * In: Input_line_pointer->next character. | |
4683 | * | |
4684 | * Do: Skip input_line_pointer over all whitespace. | |
4685 | * | |
4686 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 4687 | */ |
6efd877d KR |
4688 | int |
4689 | is_it_end_of_statement () | |
4690 | { | |
4691 | SKIP_WHITESPACE (); | |
58d4951d | 4692 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 4693 | } /* is_it_end_of_statement() */ |
fecd2382 | 4694 | |
6efd877d | 4695 | void |
d428c89f | 4696 | equals (sym_name, reassign) |
6efd877d | 4697 | char *sym_name; |
d428c89f | 4698 | int reassign; |
fecd2382 | 4699 | { |
6efd877d | 4700 | register symbolS *symbolP; /* symbol we are working with */ |
86038ada | 4701 | char *stop; |
18c9057f | 4702 | char stopc; |
f8701a3f SC |
4703 | |
4704 | input_line_pointer++; | |
6efd877d | 4705 | if (*input_line_pointer == '=') |
f8701a3f SC |
4706 | input_line_pointer++; |
4707 | ||
6efd877d | 4708 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
4709 | input_line_pointer++; |
4710 | ||
86038ada | 4711 | if (flag_mri) |
18c9057f | 4712 | stop = mri_comment_field (&stopc); |
86038ada | 4713 | |
6efd877d KR |
4714 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
4715 | { | |
4716 | /* Turn '. = mumble' into a .org mumble */ | |
4717 | register segT segment; | |
4718 | expressionS exp; | |
f8701a3f | 4719 | |
6efd877d KR |
4720 | segment = get_known_segmented_expression (&exp); |
4721 | if (!need_pass_2) | |
e28c40d7 | 4722 | do_org (segment, &exp, 0); |
6efd877d KR |
4723 | } |
4724 | else | |
4725 | { | |
4726 | symbolP = symbol_find_or_make (sym_name); | |
d428c89f ILT |
4727 | /* Permit register names to be redefined. */ |
4728 | if (! reassign | |
4729 | && S_IS_DEFINED (symbolP) | |
4730 | && S_GET_SEGMENT (symbolP) != reg_section) | |
4731 | as_bad ("symbol `%s' already defined", S_GET_NAME (symbolP)); | |
6efd877d KR |
4732 | pseudo_set (symbolP); |
4733 | } | |
86038ada ILT |
4734 | |
4735 | if (flag_mri) | |
18c9057f | 4736 | mri_comment_end (stop, stopc); |
6efd877d | 4737 | } /* equals() */ |
fecd2382 RP |
4738 | |
4739 | /* .include -- include a file at this point. */ | |
4740 | ||
4741 | /* ARGSUSED */ | |
6efd877d KR |
4742 | void |
4743 | s_include (arg) | |
4744 | int arg; | |
fecd2382 | 4745 | { |
f8701a3f SC |
4746 | char *newbuf; |
4747 | char *filename; | |
4748 | int i; | |
4749 | FILE *try; | |
4750 | char *path; | |
4751 | ||
cef72a92 | 4752 | if (! flag_m68k_mri) |
d341ae3f DE |
4753 | { |
4754 | filename = demand_copy_string (&i); | |
4755 | if (filename == NULL) | |
4756 | { | |
4757 | /* demand_copy_string has already printed an error and | |
4758 | called ignore_rest_of_line. */ | |
4759 | return; | |
4760 | } | |
4761 | } | |
ca232972 ILT |
4762 | else |
4763 | { | |
4764 | SKIP_WHITESPACE (); | |
4765 | i = 0; | |
4766 | while (! is_end_of_line[(unsigned char) *input_line_pointer] | |
4767 | && *input_line_pointer != ' ' | |
4768 | && *input_line_pointer != '\t') | |
4769 | { | |
4770 | obstack_1grow (¬es, *input_line_pointer); | |
4771 | ++input_line_pointer; | |
4772 | ++i; | |
4773 | } | |
4774 | obstack_1grow (¬es, '\0'); | |
4775 | filename = obstack_finish (¬es); | |
42ac8fa8 ILT |
4776 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
4777 | ++input_line_pointer; | |
ca232972 | 4778 | } |
6efd877d | 4779 | demand_empty_rest_of_line (); |
604633ae | 4780 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
4781 | for (i = 0; i < include_dir_count; i++) |
4782 | { | |
4783 | strcpy (path, include_dirs[i]); | |
4784 | strcat (path, "/"); | |
4785 | strcat (path, filename); | |
f2889110 | 4786 | if (0 != (try = fopen (path, "r"))) |
6efd877d KR |
4787 | { |
4788 | fclose (try); | |
4789 | goto gotit; | |
4790 | } | |
4791 | } | |
4792 | free (path); | |
f8701a3f SC |
4793 | path = filename; |
4794 | gotit: | |
4795 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
cd924033 | 4796 | register_dependency (path); |
f8701a3f SC |
4797 | newbuf = input_scrub_include_file (path, input_line_pointer); |
4798 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 4799 | } /* s_include() */ |
fecd2382 | 4800 | |
6efd877d KR |
4801 | void |
4802 | add_include_dir (path) | |
4803 | char *path; | |
fecd2382 | 4804 | { |
f8701a3f SC |
4805 | int i; |
4806 | ||
4807 | if (include_dir_count == 0) | |
4808 | { | |
6efd877d | 4809 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
4810 | include_dirs[0] = "."; /* Current dir */ |
4811 | include_dir_count = 2; | |
4812 | } | |
4813 | else | |
4814 | { | |
4815 | include_dir_count++; | |
6efd877d KR |
4816 | include_dirs = (char **) realloc (include_dirs, |
4817 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
4818 | } |
4819 | ||
6efd877d | 4820 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 4821 | |
6efd877d KR |
4822 | i = strlen (path); |
4823 | if (i > include_dir_maxlen) | |
4824 | include_dir_maxlen = i; | |
4825 | } /* add_include_dir() */ | |
fecd2382 | 4826 | |
6efd877d KR |
4827 | void |
4828 | s_ignore (arg) | |
4829 | int arg; | |
fecd2382 | 4830 | { |
58d4951d | 4831 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
4832 | { |
4833 | ++input_line_pointer; | |
4834 | } | |
4835 | ++input_line_pointer; | |
4064305e SS |
4836 | } |
4837 | ||
604633ae | 4838 | |
6594d6b9 KR |
4839 | void |
4840 | read_print_statistics (file) | |
4841 | FILE *file; | |
4842 | { | |
4843 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
4844 | } | |
4845 | ||
fecd2382 | 4846 | /* end of read.c */ |