1 /* read.c - read a source file -
2 Copyright (C) 1986, 1987, 1990, 1991, 1993 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will
22 change this a bit. But then, GNU isn't
23 spozed to run on your machine anyway.
24 (RMS is so shortsighted sometimes.)
27 #define MASK_CHAR ((int)(unsigned char)-1)
31 /* This is the largest known floating point format (for now). It will
32 grow when we do 4361 style flonums. */
34 #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
36 /* Routines that read assembler source text to build spagetti in memory.
37 Another group of these functions is in the expr.c module. */
48 /* We need this, despite the apparent object format dependency, since
49 it defines stab types, which all object formats can use now. */
51 #include "aout/stab_gnu.h"
53 #ifndef TC_START_LABEL
54 #define TC_START_LABEL(x,y) (x==':')
57 /* The NOP_OPCODE is for the alignment fill value.
58 * fill it a nop instruction so that the disassembler does not choke
62 #define NOP_OPCODE 0x00
65 char *input_line_pointer; /*->next char of source file to parse. */
67 #if BITS_PER_CHAR != 8
68 /* The following table is indexed by[(char)] and will break if
69 a char does not have exactly 256 states (hopefully 0:255!)! */
74 /* The m88k unfortunately uses @ as a label beginner. */
78 /* used by is_... macros. our ctype[] */
79 const char lex_type[256] =
81 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
82 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
83 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
84 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
85 LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
86 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 3, /* PQRSTUVWXYZ[\]^_ */
87 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
88 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, /* pqrstuvwxyz{|}~. */
89 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
90 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
91 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
92 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
93 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
94 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
101 * Out: 1 if this character ends a line.
104 char is_end_of_line[256] =
107 _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */
109 _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */
111 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
113 _,99, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* _!"#$%&'()*+,-./ */
114 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* 0123456789:;<=>? */
116 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
117 _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */
119 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
120 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
121 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
122 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
123 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
124 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
125 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
126 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
127 _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
131 /* Functions private to this file. */
133 static char *buffer; /* 1st char of each buffer of lines is here. */
134 static char *buffer_limit; /*->1 + last char in buffer. */
136 static char *bignum_low; /* Lowest char of bignum. */
137 static char *bignum_limit; /* 1st illegal address of bignum. */
138 static char *bignum_high; /* Highest char of bignum. */
139 /* May point to (bignum_start-1). */
140 /* Never >= bignum_limit. */
142 int target_big_endian;
144 static char *old_buffer; /* JF a hack */
145 static char *old_input;
146 static char *old_limit;
148 /* Variables for handling include file directory list. */
150 char **include_dirs; /* List of pointers to directories to
151 search for .include's */
152 int include_dir_count; /* How many are in the list */
153 int include_dir_maxlen = 1;/* Length of longest in list */
155 #ifndef WORKING_DOT_WORD
156 struct broken_word *broken_words;
157 int new_broken_words;
160 static char *demand_copy_string PARAMS ((int *lenP));
161 int is_it_end_of_statement PARAMS ((void));
162 static segT get_segmented_expression PARAMS ((expressionS *expP));
163 static segT get_known_segmented_expression PARAMS ((expressionS * expP));
164 static void grow_bignum PARAMS ((void));
165 static void pobegin PARAMS ((void));
176 obj_read_begin_hook ();
178 /* Something close -- but not too close -- to a multiple of 1024.
179 The debugging malloc I'm using has 24 bytes of overhead. */
180 obstack_begin (¬es, 5090);
181 obstack_begin (&cond_obstack, 990);
183 #define BIGNUM_BEGIN_SIZE (16)
184 bignum_low = xmalloc ((long) BIGNUM_BEGIN_SIZE);
185 bignum_limit = bignum_low + BIGNUM_BEGIN_SIZE;
187 /* Use machine dependent syntax */
188 for (p = line_separator_chars; *p; p++)
189 is_end_of_line[(unsigned char) *p] = 1;
190 /* Use more. FIXME-SOMEDAY. */
193 /* set up pseudo-op tables */
195 struct hash_control *po_hash;
197 static const pseudo_typeS potable[] =
199 {"abort", s_abort, 0},
200 {"align", s_align_ptwo, 0},
201 {"ascii", stringer, 0},
202 {"asciz", stringer, 1},
211 {"double", float_cons, 'd'},
213 {"eject", listing_eject, 0}, /* Formfeed listing */
216 {"endif", s_endif, 0},
221 {"extern", s_ignore, 0}, /* We treat all undef as ext */
222 {"appfile", s_app_file, 1},
223 {"appline", s_app_line, 0},
224 {"file", s_app_file, 0},
226 {"float", float_cons, 'f'},
227 {"global", s_globl, 0},
228 {"globl", s_globl, 0},
231 {"ifdef", s_ifdef, 0},
232 {"ifeqs", s_ifeqs, 0},
233 {"ifndef", s_ifdef, 1},
234 {"ifnes", s_ifeqs, 1},
235 {"ifnotdef", s_ifdef, 1},
236 {"include", s_include, 0},
238 {"lcomm", s_lcomm, 0},
239 {"lflags", listing_flags, 0}, /* Listing flags */
240 {"list", listing_list, 1}, /* Turn listing on */
243 {"nolist", listing_list, 0}, /* Turn listing off */
244 {"octa", big_cons, 16},
246 {"psize", listing_psize, 0}, /* set paper size */
248 {"quad", big_cons, 8},
249 {"sbttl", listing_title, 1}, /* Subtitle of listing */
254 {"single", float_cons, 'f'},
256 {"space", s_space, 0},
257 {"stabd", s_stab, 'd'},
258 {"stabn", s_stab, 'n'},
259 {"stabs", s_stab, 's'},
260 {"string", stringer, 1},
263 {"title", listing_title, 0}, /* Listing title */
267 {"xstabs", s_xstab, 's'},
269 {NULL} /* end sentinel */
275 const char *errtxt; /* error text */
276 const pseudo_typeS *pop;
278 po_hash = hash_new ();
280 /* Do the target-specific pseudo ops. */
281 for (pop = md_pseudo_table; pop->poc_name; pop++)
283 errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
284 if (errtxt && *errtxt)
286 as_fatal ("error constructing md pseudo-op table");
290 /* Now object specific. Skip any that were in the target table. */
291 for (pop = obj_pseudo_table; pop->poc_name; pop++)
293 errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
294 if (errtxt && *errtxt)
296 if (!strcmp (errtxt, "exists"))
298 #ifdef DIE_ON_OVERRIDES
299 as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name);
300 #endif /* DIE_ON_OVERRIDES */
301 continue; /* OK if target table overrides. */
305 as_fatal ("error constructing obj pseudo-op table");
306 } /* if overridden */
310 /* Now portable ones. Skip any that we've seen already. */
311 for (pop = potable; pop->poc_name; pop++)
313 errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
314 if (errtxt && *errtxt)
316 if (!strcmp (errtxt, "exists"))
318 #ifdef DIE_ON_OVERRIDES
319 as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name);
320 #endif /* DIE_ON_OVERRIDES */
321 continue; /* OK if target table overrides. */
325 as_fatal ("error constructing obj pseudo-op table");
326 } /* if overridden */
333 #define HANDLE_CONDITIONAL_ASSEMBLY() \
334 if (ignore_input ()) \
336 while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \
337 if (input_line_pointer == buffer_limit) \
343 /* read_a_source_file()
345 * We read the file, putting things into a web that
346 * represents what we have been reading.
349 read_a_source_file (name)
353 register char *s; /* string of symbol, '\0' appended */
357 buffer = input_scrub_new_file (name);
360 listing_newline ("");
362 while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)
363 { /* We have another line to parse. */
364 know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */
365 contin: /* JF this goto is my fault I admit it.
366 Someone brave please re-write the whole
367 input section here? Pleeze??? */
368 while (input_line_pointer < buffer_limit)
370 /* We have more of this buffer to parse. */
373 * We now have input_line_pointer->1st char of next line.
374 * If input_line_pointer [-1] == '\n' then we just
375 * scanned another line: so bump line counters.
377 if (input_line_pointer[-1] == '\n')
379 bump_line_counters ();
382 /* Text at the start of a line must be a label, we run down and stick a colon in */
383 if (is_name_beginner (*input_line_pointer))
385 char *line_start = input_line_pointer;
386 char c = get_symbol_end ();
388 *input_line_pointer = c;
390 input_line_pointer++;
398 * We are at the begining of a line, or similar place.
399 * We expect a well-formed assembler statement.
400 * A "symbol-name:" is a statement.
402 * Depending on what compiler is used, the order of these tests
403 * may vary to catch most common case 1st.
404 * Each test is independent of all other tests at the (top) level.
405 * PLEASE make a compiler that doesn't use this assembler.
406 * It is crufty to waste a compiler's time encoding things for this
407 * assembler, which then wastes more time decoding it.
408 * (And communicating via (linear) files is silly!
409 * If you must pass stuff, please pass a tree!)
411 if ((c = *input_line_pointer++) == '\t'
416 c = *input_line_pointer++;
418 know (c != ' '); /* No further leading whitespace. */
421 * C is the 1st significant character.
422 * Input_line_pointer points after that character.
424 if (is_name_beginner (c))
425 { /* want user-defined label or pseudo/opcode */
426 HANDLE_CONDITIONAL_ASSEMBLY ();
428 s = --input_line_pointer;
429 c = get_symbol_end (); /* name's delimiter */
431 * C is character after symbol.
432 * That character's place in the input line is now '\0'.
433 * S points to the beginning of the symbol.
434 * [In case of pseudo-op, s->'.'.]
435 * Input_line_pointer->'\0' where c was.
437 if (TC_START_LABEL(c, input_line_pointer))
439 colon (s); /* user-defined label */
440 *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */
441 /* Input_line_pointer->after ':'. */
447 || (input_line_pointer[1] == '='
448 #ifdef TC_EQUAL_IN_INSN
449 && ! TC_EQUAL_IN_INSN (c, input_line_pointer)
454 demand_empty_rest_of_line ();
457 { /* expect pseudo-op or machine instruction */
459 if (!done_pseudo (s))
466 /* The m88k uses pseudo-ops without a period. */
467 pop = (pseudo_typeS *) hash_find (po_hash, s);
468 if (pop != NULL && pop->poc_handler == NULL)
472 if (pop != NULL || *s == '.')
477 * WARNING: c has next char, which may be end-of-line.
478 * We lookup the pseudo-op table with s+1 because we
479 * already know that the pseudo-op begins with a '.'.
483 pop = (pseudo_typeS *) hash_find (po_hash, s + 1);
485 /* Print the error msg now, while we still can */
488 as_bad ("Unknown pseudo-op: `%s'", s);
489 *input_line_pointer = c;
494 /* Put it back for error messages etc. */
495 *input_line_pointer = c;
496 /* The following skip of whitespace is compulsory.
497 A well shaped space is sometimes all that separates
498 keyword from operands. */
499 if (c == ' ' || c == '\t')
501 input_line_pointer++;
502 } /* Skip seperator after keyword. */
504 * Input_line is restored.
505 * Input_line_pointer->1st non-blank char
506 * after pseudo-operation.
510 ignore_rest_of_line ();
515 (*pop->poc_handler) (pop->poc_val);
516 } /* if we have one */
520 { /* machine instruction */
521 /* WARNING: c has char, which may be end-of-line. */
522 /* Also: input_line_pointer->`\0` where c was. */
523 *input_line_pointer = c;
524 while (!is_end_of_line[(unsigned char) *input_line_pointer]
525 #ifdef TC_EOL_IN_INSN
526 || TC_EOL_IN_INSN (input_line_pointer)
530 input_line_pointer++;
533 c = *input_line_pointer;
534 *input_line_pointer = '\0';
536 md_assemble (s); /* Assemble 1 instruction. */
538 *input_line_pointer++ = c;
540 /* We resume loop AFTER the end-of-line from this instruction */
545 } /* if (is_name_beginner(c) */
548 if (is_end_of_line[(unsigned char) c])
551 } /* empty statement */
554 #if defined(LOCAL_LABELS_DOLLAR) || defined(LOCAL_LABELS_FB)
556 { /* local label ("4:") */
557 char *backup = input_line_pointer;
559 HANDLE_CONDITIONAL_ASSEMBLY ();
563 while (isdigit (*input_line_pointer))
565 temp = (temp * 10) + *input_line_pointer - '0';
566 ++input_line_pointer;
567 } /* read the whole number */
569 #ifdef LOCAL_LABELS_DOLLAR
570 if (*input_line_pointer == '$'
571 && *(input_line_pointer + 1) == ':')
573 input_line_pointer += 2;
575 if (dollar_label_defined (temp))
577 as_fatal ("label \"%d$\" redefined", temp);
580 define_dollar_label (temp);
581 colon (dollar_label_name (temp, 0));
584 #endif /* LOCAL_LABELS_DOLLAR */
586 #ifdef LOCAL_LABELS_FB
587 if (*input_line_pointer++ == ':')
589 fb_label_instance_inc (temp);
590 colon (fb_label_name (temp, 0));
593 #endif /* LOCAL_LABELS_FB */
595 input_line_pointer = backup;
596 } /* local label ("4:") */
597 #endif /* LOCAL_LABELS_DOLLAR or LOCAL_LABELS_FB */
599 if (c && strchr (line_comment_chars, c))
600 { /* Its a comment. Better say APP or NO_APP */
604 unsigned int new_length;
606 extern char *scrub_string, *scrub_last_string;
608 bump_line_counters ();
609 s = input_line_pointer;
610 if (strncmp (s, "APP\n", 4))
611 continue; /* We ignore it */
614 ends = strstr (s, "#NO_APP\n");
618 unsigned int tmp_len;
621 /* The end of the #APP wasn't in this buffer. We
622 keep reading in buffers until we find the #NO_APP
623 that goes with this #APP There is one. The specs
625 tmp_len = buffer_limit - s;
626 tmp_buf = xmalloc (tmp_len + 1);
627 memcpy (tmp_buf, s, tmp_len);
630 new_tmp = input_scrub_next_buffer (&buffer);
634 buffer_limit = new_tmp;
635 input_line_pointer = buffer;
636 ends = strstr (buffer, "#NO_APP\n");
640 num = buffer_limit - buffer;
642 tmp_buf = xrealloc (tmp_buf, tmp_len + num);
643 memcpy (tmp_buf, buffer + tmp_len, num);
648 input_line_pointer = ends ? ends + 8 : NULL;
656 input_line_pointer = ends + 8;
658 new_buf = xmalloc (100);
663 scrub_last_string = ends;
668 ch = do_scrub_next_char (scrub_from_string, scrub_to_string);
672 if (new_tmp == new_buf + new_length)
674 new_buf = xrealloc (new_buf, new_length + 100);
675 new_tmp = new_buf + new_length;
683 old_input = input_line_pointer;
684 old_limit = buffer_limit;
686 input_line_pointer = new_buf;
687 buffer_limit = new_tmp;
691 HANDLE_CONDITIONAL_ASSEMBLY ();
693 /* as_warn("Junk character %d.",c); Now done by ignore_rest */
694 input_line_pointer--; /* Report unknown char as ignored. */
695 ignore_rest_of_line ();
696 } /* while (input_line_pointer<buffer_limit) */
699 bump_line_counters ();
703 input_line_pointer = old_input;
704 buffer_limit = old_limit;
709 } /* while (more buffers to scan) */
710 input_scrub_close (); /* Close the input file */
712 } /* read_a_source_file() */
718 as_fatal (".abort detected. Abandoning ship.");
721 /* For machines where ".align 4" means align to a 4 byte boundary. */
726 register unsigned int temp;
727 register long temp_fill;
729 unsigned long max_alignment = 1 << 15;
731 if (is_end_of_line[(unsigned char) *input_line_pointer])
732 temp = arg; /* Default value from pseudo-op table */
734 temp = get_absolute_expression ();
736 if (temp > max_alignment)
738 as_bad ("Alignment too large: %d. assumed.", temp = max_alignment);
742 * For the sparc, `.align (1<<n)' actually means `.align n'
743 * so we have to convert it.
747 for (i = 0; (temp & 1) == 0; temp >>= 1, ++i)
751 as_bad ("Alignment not a power of 2");
754 if (*input_line_pointer == ',')
756 input_line_pointer++;
757 temp_fill = get_absolute_expression ();
759 else if (now_seg != data_section && now_seg != bss_section)
760 temp_fill = NOP_OPCODE;
763 /* Only make a frag if we HAVE to. . . */
764 if (temp && !need_pass_2)
765 frag_align ((int) temp, (int) temp_fill);
767 record_alignment (now_seg, (int) temp);
769 demand_empty_rest_of_line ();
770 } /* s_align_bytes() */
772 /* For machines where ".align 4" means align to 2**4 boundary. */
774 s_align_ptwo (ignore)
778 register long temp_fill;
779 long max_alignment = 15;
781 temp = get_absolute_expression ();
782 if (temp > max_alignment)
783 as_bad ("Alignment too large: %d. assumed.", temp = max_alignment);
786 as_bad ("Alignment negative. 0 assumed.");
789 if (*input_line_pointer == ',')
791 input_line_pointer++;
792 temp_fill = get_absolute_expression ();
794 /* @@ Fix this right for BFD! */
795 else if (now_seg != data_section && now_seg != bss_section)
796 temp_fill = NOP_OPCODE;
799 /* Only make a frag if we HAVE to. . . */
800 if (temp && !need_pass_2)
801 frag_align (temp, (int) temp_fill);
803 record_alignment (now_seg, temp);
805 demand_empty_rest_of_line ();
806 } /* s_align_ptwo() */
816 register symbolS *symbolP;
818 name = input_line_pointer;
819 c = get_symbol_end ();
820 /* just after name is now '\0' */
821 p = input_line_pointer;
824 if (*input_line_pointer != ',')
826 as_bad ("Expected comma after symbol-name: rest of line ignored.");
827 ignore_rest_of_line ();
830 input_line_pointer++; /* skip ',' */
831 if ((temp = get_absolute_expression ()) < 0)
833 as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp);
834 ignore_rest_of_line ();
838 symbolP = symbol_find_or_make (name);
840 if (S_IS_DEFINED (symbolP))
842 as_bad ("Ignoring attempt to re-define symbol");
843 ignore_rest_of_line ();
846 if (S_GET_VALUE (symbolP))
848 if (S_GET_VALUE (symbolP) != (valueT) temp)
849 as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.",
850 S_GET_NAME (symbolP),
851 (long) S_GET_VALUE (symbolP),
856 S_SET_VALUE (symbolP, (valueT) temp);
857 S_SET_EXTERNAL (symbolP);
860 if ( (!temp) || !flagseen['1'])
861 S_GET_OTHER(symbolP) = const_flag;
862 #endif /* not OBJ_VMS */
863 know (symbolP->sy_frag == &zero_address_frag);
864 demand_empty_rest_of_line ();
874 temp = get_absolute_expression ();
877 section = text_section;
881 section = data_section;
883 subseg_set (section, (subsegT) temp);
888 demand_empty_rest_of_line ();
891 /* Handle the .appfile pseudo-op. This is automatically generated by
892 do_scrub_next_char when a preprocessor # line comment is seen with
893 a file name. This default definition may be overridden by the
894 object or CPU specific pseudo-ops. This function is also the
895 default definition for .file; the APPFILE argument is 1 for
896 .appfile, 0 for .file. */
905 /* Some assemblers tolerate immediately following '"' */
906 if ((s = demand_copy_string (&length)) != 0)
908 /* If this is a fake .appfile, a fake newline was inserted into
909 the buffer. Passing -2 to new_logical_line tells it to
911 new_logical_line (s, appfile ? -2 : -1);
912 demand_empty_rest_of_line ();
915 listing_source_file (s);
919 c_dot_file_symbol (s);
920 #endif /* OBJ_COFF */
926 /* Handle the .appline pseudo-op. This is automatically generated by
927 do_scrub_next_char when a preprocessor # line comment is seen.
928 This default definition may be overridden by the object or CPU
929 specific pseudo-ops. */
937 /* The given number is that of the next line. */
938 l = get_absolute_expression () - 1;
939 new_logical_line ((char *) NULL, l);
942 listing_source_line (l);
944 demand_empty_rest_of_line ();
951 long temp_repeat = 0;
953 register long temp_fill = 0;
957 temp_repeat = get_absolute_expression ();
958 if (*input_line_pointer == ',')
960 input_line_pointer++;
961 temp_size = get_absolute_expression ();
962 if (*input_line_pointer == ',')
964 input_line_pointer++;
965 temp_fill = get_absolute_expression ();
968 /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
969 #define BSD_FILL_SIZE_CROCK_8 (8)
970 if (temp_size > BSD_FILL_SIZE_CROCK_8)
972 as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8);
973 temp_size = BSD_FILL_SIZE_CROCK_8;
977 as_warn ("Size negative: .fill ignored.");
980 else if (temp_repeat <= 0)
982 as_warn ("Repeat < 0, .fill ignored");
986 if (temp_size && !need_pass_2)
988 p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0);
989 memset (p, 0, (unsigned int) temp_size);
990 /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
991 * flavoured AS. The following bizzare behaviour is to be
992 * compatible with above. I guess they tried to take up to 8
993 * bytes from a 4-byte expression and they forgot to sign
994 * extend. Un*x Sux. */
995 #define BSD_FILL_SIZE_CROCK_4 (4)
996 md_number_to_chars (p, (valueT) temp_fill,
997 (temp_size > BSD_FILL_SIZE_CROCK_4
998 ? BSD_FILL_SIZE_CROCK_4
1000 /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
1001 * but emits no error message because it seems a legal thing to do.
1002 * It is a degenerate case of .fill but could be emitted by a compiler.
1005 demand_empty_rest_of_line ();
1018 name = input_line_pointer;
1019 c = get_symbol_end ();
1020 symbolP = symbol_find_or_make (name);
1021 *input_line_pointer = c;
1023 S_SET_EXTERNAL (symbolP);
1026 input_line_pointer++;
1028 if (*input_line_pointer == '\n')
1033 demand_empty_rest_of_line ();
1037 s_lcomm (needs_align)
1038 /* 1 if this was a ".bss" directive, which may require a 3rd argument
1039 (alignment); 0 if it was an ".lcomm" (2 args only) */
1042 register char *name;
1046 register symbolS *symbolP;
1047 segT current_seg = now_seg;
1048 subsegT current_subseg = now_subseg;
1049 const int max_alignment = 15;
1051 segT bss_seg = bss_section;
1053 name = input_line_pointer;
1054 c = get_symbol_end ();
1055 p = input_line_pointer;
1058 if (*input_line_pointer != ',')
1060 as_bad ("Expected comma after name");
1061 ignore_rest_of_line ();
1065 ++input_line_pointer;
1067 if (*input_line_pointer == '\n')
1069 as_bad ("Missing size expression");
1073 if ((temp = get_absolute_expression ()) < 0)
1075 as_warn ("BSS length (%d.) <0! Ignored.", temp);
1076 ignore_rest_of_line ();
1082 /* For MIPS ECOFF, small objects are put in .sbss. */
1083 if (temp <= bfd_get_gp_size (stdoutput))
1084 bss_seg = subseg_new (".sbss", 1);
1092 if (*input_line_pointer != ',')
1094 as_bad ("Expected comma after size");
1095 ignore_rest_of_line ();
1098 input_line_pointer++;
1100 if (*input_line_pointer == '\n')
1102 as_bad ("Missing alignment");
1105 align = get_absolute_expression ();
1106 if (align > max_alignment)
1108 align = max_alignment;
1109 as_warn ("Alignment too large: %d. assumed.", align);
1114 as_warn ("Alignment negative. 0 assumed.");
1116 record_alignment (bss_seg, align);
1117 } /* if needs align */
1120 symbolP = symbol_find_or_make (name);
1124 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
1125 S_GET_OTHER (symbolP) == 0 &&
1126 S_GET_DESC (symbolP) == 0 &&
1127 #endif /* OBJ_AOUT or OBJ_BOUT */
1128 (S_GET_SEGMENT (symbolP) == bss_seg
1129 || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0)))
1133 subseg_set (bss_seg, 1);
1136 frag_align (align, 0);
1137 /* detach from old frag */
1138 if (S_GET_SEGMENT (symbolP) == bss_seg)
1139 symbolP->sy_frag->fr_symbol = NULL;
1141 symbolP->sy_frag = frag_now;
1142 pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP,
1146 S_SET_SEGMENT (symbolP, bss_seg);
1149 /* The symbol may already have been created with a preceding
1150 ".globl" directive -- be careful not to step on storage class
1151 in that case. Otherwise, set it to static. */
1152 if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
1154 S_SET_STORAGE_CLASS (symbolP, C_STAT);
1156 #endif /* OBJ_COFF */
1160 as_bad ("Ignoring attempt to re-define symbol %s.", name);
1163 subseg_set (current_seg, current_subseg);
1165 demand_empty_rest_of_line ();
1172 register char *name;
1176 register symbolS *symbolP;
1178 /* we permit ANY defined expression: BSD4.2 demands constants */
1179 name = input_line_pointer;
1180 c = get_symbol_end ();
1181 p = input_line_pointer;
1184 if (*input_line_pointer != ',')
1187 as_bad ("Expected comma after name \"%s\"", name);
1189 ignore_rest_of_line ();
1192 input_line_pointer++;
1194 if (exp.X_op != O_constant
1195 && exp.X_op != O_register)
1197 as_bad ("bad expression");
1198 ignore_rest_of_line ();
1202 symbolP = symbol_find_or_make (name);
1204 /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 &&
1205 symbolP->sy_desc == 0) out of this test because coff doesn't have
1206 those fields, and I can't see when they'd ever be tripped. I
1207 don't think I understand why they were here so I may have
1208 introduced a bug. As recently as 1.37 didn't have this test
1209 anyway. xoxorich. */
1211 if (S_GET_SEGMENT (symbolP) == undefined_section
1212 && S_GET_VALUE (symbolP) == 0)
1214 /* The name might be an undefined .global symbol; be sure to
1215 keep the "external" bit. */
1216 S_SET_SEGMENT (symbolP,
1217 (exp.X_op == O_constant
1220 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
1224 as_bad ("Symbol %s already defined", name);
1227 demand_empty_rest_of_line ();
1234 register segT segment;
1236 register long temp_fill;
1238 /* Don't believe the documentation of BSD 4.2 AS. There is no such
1239 thing as a sub-segment-relative origin. Any absolute origin is
1240 given a warning, then assumed to be segment-relative. Any
1241 segmented origin expression ("foo+42") had better be in the right
1242 segment or the .org is ignored.
1244 BSD 4.2 AS warns if you try to .org backwards. We cannot because
1245 we never know sub-segment sizes when we are reading code. BSD
1246 will crash trying to emit negative numbers of filler bytes in
1247 certain .orgs. We don't crash, but see as-write for that code.
1249 Don't make frag if need_pass_2==1. */
1250 segment = get_known_segmented_expression (&exp);
1251 if (*input_line_pointer == ',')
1253 input_line_pointer++;
1254 temp_fill = get_absolute_expression ();
1260 if (segment != now_seg && segment != absolute_section)
1261 as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.",
1262 segment_name (segment), segment_name (now_seg));
1263 p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol,
1264 exp.X_add_number, (char *) 0);
1266 } /* if (ok to make frag) */
1267 demand_empty_rest_of_line ();
1274 register char *name;
1275 register char delim;
1276 register char *end_name;
1277 register symbolS *symbolP;
1280 * Especial apologies for the random logic:
1281 * this just grew, and could be parsed much more simply!
1284 name = input_line_pointer;
1285 delim = get_symbol_end ();
1286 end_name = input_line_pointer;
1290 if (*input_line_pointer != ',')
1293 as_bad ("Expected comma after name \"%s\"", name);
1295 ignore_rest_of_line ();
1299 input_line_pointer++;
1302 if (name[0] == '.' && name[1] == '\0')
1304 /* Turn '. = mumble' into a .org mumble */
1305 register segT segment;
1309 segment = get_known_segmented_expression (&exp);
1313 if (segment != now_seg && segment != absolute_section)
1314 as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.",
1315 segment_name (segment),
1316 segment_name (now_seg));
1317 ptr = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol,
1318 exp.X_add_number, (char *) 0);
1320 } /* if (ok to make frag) */
1326 if ((symbolP = symbol_find (name)) == NULL
1327 && (symbolP = md_undefined_symbol (name)) == NULL)
1329 symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag);
1331 /* "set" symbols are local unless otherwise specified. */
1332 SF_SET_LOCAL (symbolP);
1333 #endif /* OBJ_COFF */
1335 } /* make a new symbol */
1337 symbol_table_insert (symbolP);
1340 pseudo_set (symbolP);
1341 demand_empty_rest_of_line ();
1349 register long temp_fill;
1352 /* Just like .fill, but temp_size = 1 */
1353 if (get_absolute_expression_and_terminator (&temp_repeat) == ',')
1355 temp_fill = get_absolute_expression ();
1359 input_line_pointer--; /* Backup over what was not a ','. */
1364 temp_repeat *= mult;
1366 if (temp_repeat <= 0)
1368 as_warn ("Repeat < 0, .space ignored");
1369 ignore_rest_of_line ();
1374 p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0,
1375 temp_repeat, (char *) 0);
1378 demand_empty_rest_of_line ();
1387 temp = get_absolute_expression ();
1388 subseg_set (text_section, (subsegT) temp);
1389 demand_empty_rest_of_line ();
1394 demand_empty_rest_of_line ()
1397 if (is_end_of_line[(unsigned char) *input_line_pointer])
1399 input_line_pointer++;
1403 ignore_rest_of_line ();
1405 /* Return having already swallowed end-of-line. */
1406 } /* Return pointing just after end-of-line. */
1409 ignore_rest_of_line () /* For suspect lines: gives warning. */
1411 if (!is_end_of_line[(unsigned char) *input_line_pointer])
1413 if (isprint (*input_line_pointer))
1414 as_bad ("Rest of line ignored. First ignored character is `%c'.",
1415 *input_line_pointer);
1417 as_bad ("Rest of line ignored. First ignored character valued 0x%x.",
1418 *input_line_pointer);
1419 while (input_line_pointer < buffer_limit
1420 && !is_end_of_line[(unsigned char) *input_line_pointer])
1422 input_line_pointer++;
1425 input_line_pointer++; /* Return pointing just after end-of-line. */
1426 know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
1432 * In: Pointer to a symbol.
1433 * Input_line_pointer->expression.
1435 * Out: Input_line_pointer->just after any whitespace after expression.
1436 * Tried to set symbol to value of expression.
1437 * Will change symbols type, value, and frag;
1440 pseudo_set (symbolP)
1444 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
1446 #endif /* OBJ_AOUT or OBJ_BOUT */
1448 know (symbolP); /* NULL pointer is logic error. */
1449 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
1450 /* @@ Fix this right for BFD. */
1451 ext = S_IS_EXTERNAL (symbolP);
1452 #endif /* OBJ_AOUT or OBJ_BOUT */
1454 (void) expression (&exp);
1456 if (exp.X_op == O_illegal)
1457 as_bad ("illegal expression; zero assumed");
1458 else if (exp.X_op == O_absent)
1459 as_bad ("missing expression; zero assumed");
1460 else if (exp.X_op == O_big)
1461 as_bad ("%s number invalid; zero assumed",
1462 exp.X_add_number > 0 ? "bignum" : "floating point");
1463 else if (exp.X_op == O_subtract
1464 && (S_GET_SEGMENT (exp.X_add_symbol)
1465 == S_GET_SEGMENT (exp.X_op_symbol))
1466 && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
1467 && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag)
1469 exp.X_op = O_constant;
1470 exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)
1471 - S_GET_VALUE (exp.X_op_symbol));
1479 exp.X_add_number = 0;
1482 S_SET_SEGMENT (symbolP, absolute_section);
1483 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
1484 /* @@ Fix this right for BFD. */
1486 S_SET_EXTERNAL (symbolP);
1488 S_CLEAR_EXTERNAL (symbolP);
1489 #endif /* OBJ_AOUT or OBJ_BOUT */
1490 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
1491 symbolP->sy_frag = &zero_address_frag;
1495 S_SET_SEGMENT (symbolP, reg_section);
1496 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
1497 symbolP->sy_frag = &zero_address_frag;
1501 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
1502 symbolP->sy_value = exp;
1505 S_SET_SEGMENT (symbolP, S_GET_SEGMENT (exp.X_add_symbol));
1506 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
1507 /* @@ Fix this right for BFD! */
1509 S_SET_EXTERNAL (symbolP);
1511 S_CLEAR_EXTERNAL (symbolP);
1512 #endif /* OBJ_AOUT or OBJ_BOUT */
1513 S_SET_VALUE (symbolP,
1514 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
1515 symbolP->sy_frag = exp.X_add_symbol->sy_frag;
1520 /* The value is some complex expression.
1521 FIXME: Should we set the segment to anything? */
1522 symbolP->sy_value = exp;
1530 * CONStruct more frag of .bytes, or .words etc.
1531 * Should need_pass_2 be 1 then emit no frag(s).
1532 * This understands EXPRESSIONS, as opposed to big_cons().
1536 * This has a split personality. We use expression() to read the
1537 * value. We can detect if the value won't fit in a byte or word.
1538 * But we can't detect if expression() discarded significant digits
1539 * in the case of a long. Not worth the crocks required to fix it.
1542 /* Select a parser for cons expressions. */
1544 /* Some targets need to parse the expression in various fancy ways.
1545 You can define TC_PARSE_CONS_EXPRESSION to do whatever you like
1546 (for example, the HPPA does this). Otherwise, you can define
1547 BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or
1548 REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these
1549 are defined, which is the normal case, then only simple expressions
1552 #ifndef TC_PARSE_CONS_EXPRESSION
1553 #ifdef BITFIELD_CONS_EXPRESSIONS
1554 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)
1556 parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes));
1559 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_mri_cons (EXP)
1561 parse_mri_cons PARAMS ((expressionS *exp));
1563 #ifdef REPEAT_CONS_EXPRESSIONS
1564 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)
1566 parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes));
1569 /* If we haven't gotten one yet, just call expression. */
1570 #ifndef TC_PARSE_CONS_EXPRESSION
1571 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)
1575 /* worker to do .byte etc statements */
1576 /* clobbers input_line_pointer, checks */
1580 register int nbytes; /* 1=.byte, 2=.word, 4=.long */
1584 if (is_it_end_of_statement ())
1586 demand_empty_rest_of_line ();
1592 TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);
1593 emit_expr (&exp, (unsigned int) nbytes);
1595 while (*input_line_pointer++ == ',');
1597 input_line_pointer--; /* Put terminator back into stream. */
1598 demand_empty_rest_of_line ();
1601 /* Put the contents of expression EXP into the object file using
1602 NBYTES bytes. If need_pass_2 is 1, this does nothing. */
1605 emit_expr (exp, nbytes)
1607 unsigned int nbytes;
1612 /* Don't do anything if we are going to make another pass. */
1618 if (op == O_absent || op == O_illegal)
1620 as_warn ("zero assumed for missing expression");
1621 exp->X_add_number = 0;
1624 else if (op == O_big)
1626 as_bad ("%s number invalid; zero assumed",
1627 exp->X_add_number > 0 ? "bignum" : "floating point");
1628 exp->X_add_number = 0;
1631 else if (op == O_register)
1633 as_warn ("register value used as expression");
1637 p = frag_more ((int) nbytes);
1639 #ifndef WORKING_DOT_WORD
1640 /* If we have the difference of two symbols in a word, save it on
1641 the broken_words list. See the code in write.c. */
1642 if (op == O_subtract && nbytes == 2)
1644 struct broken_word *x;
1646 x = (struct broken_word *) xmalloc (sizeof (struct broken_word));
1647 x->next_broken_word = broken_words;
1650 x->word_goes_here = p;
1652 x->add = exp->X_add_symbol;
1653 x->sub = exp->X_op_symbol;
1654 x->addnum = exp->X_add_number;
1661 if (op == O_constant)
1666 register long unmask;
1668 /* JF << of >= number of bits in the object is undefined. In
1669 particular SPARC (Sun 4) has problems */
1670 if (nbytes >= sizeof (long))
1673 mask = ~0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */
1675 unmask = ~mask; /* Do store these bits. */
1678 "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
1679 mask = ~(unmask >> 1); /* Includes sign bit now. */
1682 get = exp->X_add_number;
1684 if ((get & mask) != 0 && (get & mask) != mask)
1685 { /* Leading bits contain both 0s & 1s. */
1686 as_warn ("Value 0x%lx truncated to 0x%lx.", get, use);
1688 /* put bytes in right order. */
1689 md_number_to_chars (p, (valueT) use, (int) nbytes);
1693 md_number_to_chars (p, (valueT) 0, (int) nbytes);
1695 /* Now we need to generate a fixS to record the symbol value.
1696 This is easy for BFD. For other targets it can be more
1697 complex. For very complex cases (currently, the HPPA and
1698 NS32K), you can define TC_CONS_FIX_NEW to do whatever you
1699 want. For simpler cases, you can define TC_CONS_RELOC to be
1700 the name of the reloc code that should be stored in the fixS.
1701 If neither is defined, the code uses NO_RELOC if it is
1702 defined, and otherwise uses 0. */
1704 #ifdef BFD_ASSEMBLER
1705 #ifdef TC_CONS_FIX_NEW
1706 TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
1708 fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0,
1709 /* @@ Should look at CPU word size. */
1710 nbytes == 2 ? BFD_RELOC_16
1711 : nbytes == 8 ? BFD_RELOC_64
1715 #ifdef TC_CONS_FIX_NEW
1716 TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
1718 /* Figure out which reloc number to use. Use TC_CONS_RELOC if
1719 it is defined, otherwise use NO_RELOC if it is defined,
1721 #ifndef TC_CONS_RELOC
1723 #define TC_CONS_RELOC NO_RELOC
1725 #define TC_CONS_RELOC 0
1728 fix_new_exp (frag_now, p - frag_now->fr_literal, nbytes, exp, 0,
1730 #endif /* TC_CONS_FIX_NEW */
1731 #endif /* BFD_ASSEMBLER */
1735 #ifdef BITFIELD_CONS_EXPRESSIONS
1737 /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as
1738 w:x,y:z, where w and y are bitwidths and x and y are values. They
1739 then pack them all together. We do a little better in that we allow
1740 them in words, longs, etc. and we'll pack them in target byte order
1743 The rules are: pack least significat bit first, if a field doesn't
1744 entirely fit, put it in the next unit. Overflowing the bitfield is
1745 explicitly *not* even a warning. The bitwidth should be considered
1748 To use this function the tc-XXX.h file should define
1749 BITFIELD_CONS_EXPRESSIONS. */
1752 parse_bitfield_cons (exp, nbytes)
1754 unsigned int nbytes;
1756 unsigned int bits_available = BITS_PER_CHAR * nbytes;
1757 char *hold = input_line_pointer;
1759 (void) expression (exp);
1761 if (*input_line_pointer == ':')
1767 unsigned long width;
1769 if (*input_line_pointer != ':')
1771 input_line_pointer = hold;
1773 } /* next piece is not a bitfield */
1775 /* In the general case, we can't allow
1776 full expressions with symbol
1777 differences and such. The relocation
1778 entries for symbols not defined in this
1779 assembly would require arbitrary field
1780 widths, positions, and masks which most
1781 of our current object formats don't
1784 In the specific case where a symbol
1785 *is* defined in this assembly, we
1786 *could* build fixups and track it, but
1787 this could lead to confusion for the
1788 backends. I'm lazy. I'll take any
1789 SEG_ABSOLUTE. I think that means that
1790 you can use a previous .set or
1791 .equ type symbol. xoxorich. */
1793 if (exp->X_op == O_absent)
1795 as_warn ("using a bit field width of zero");
1796 exp->X_add_number = 0;
1797 exp->X_op = O_constant;
1798 } /* implied zero width bitfield */
1800 if (exp->X_op != O_constant)
1802 *input_line_pointer = '\0';
1803 as_bad ("field width \"%s\" too complex for a bitfield", hold);
1804 *input_line_pointer = ':';
1805 demand_empty_rest_of_line ();
1809 if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes))
1811 as_warn ("field width %d too big to fit in %d bytes: truncated to %d bits",
1812 width, nbytes, (BITS_PER_CHAR * nbytes));
1813 width = BITS_PER_CHAR * nbytes;
1816 if (width > bits_available)
1818 /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */
1819 input_line_pointer = hold;
1820 exp->X_add_number = value;
1824 hold = ++input_line_pointer; /* skip ':' */
1826 (void) expression (exp);
1827 if (exp->X_op != O_constant)
1829 char cache = *input_line_pointer;
1831 *input_line_pointer = '\0';
1832 as_bad ("field value \"%s\" too complex for a bitfield", hold);
1833 *input_line_pointer = cache;
1834 demand_empty_rest_of_line ();
1838 value |= ((~(-1 << width) & exp->X_add_number)
1839 << ((BITS_PER_CHAR * nbytes) - bits_available));
1841 if ((bits_available -= width) == 0
1842 || is_it_end_of_statement ()
1843 || *input_line_pointer != ',')
1846 } /* all the bitfields we're gonna get */
1848 hold = ++input_line_pointer;
1849 (void) expression (exp);
1850 } /* forever loop */
1852 exp->X_add_number = value;
1853 exp->X_op = O_constant;
1854 } /* if looks like a bitfield */
1855 } /* parse_bitfield_cons() */
1857 #endif /* BITFIELD_CONS_EXPRESSIONS */
1862 parse_mri_cons (exp, nbytes)
1864 unsigned int nbytes;
1866 if (*input_line_pointer == '\'')
1868 /* An MRI style string, cut into as many bytes as will fit into
1869 a nbyte chunk, left justify if necessary, and separate with
1870 commas so we can try again later */
1872 unsigned int result = 0;
1873 input_line_pointer++;
1874 for (scan = 0; scan < nbytes; scan++)
1876 if (*input_line_pointer == '\'')
1878 if (input_line_pointer[1] == '\'')
1880 input_line_pointer++;
1885 result = (result << 8) | (*input_line_pointer++);
1889 while (scan < nbytes)
1894 /* Create correct expression */
1895 exp->X_op = O_constant;
1896 exp->X_add_number = result;
1897 /* Fake it so that we can read the next char too */
1898 if (input_line_pointer[0] != '\'' ||
1899 (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))
1901 input_line_pointer -= 2;
1902 input_line_pointer[0] = ',';
1903 input_line_pointer[1] = '\'';
1906 input_line_pointer++;
1914 #ifdef REPEAT_CONS_EXPRESSIONS
1916 /* Parse a repeat expression for cons. This is used by the MIPS
1917 assembler. The format is NUMBER:COUNT; NUMBER appears in the
1918 object file COUNT times.
1920 To use this for a target, define REPEAT_CONS_EXPRESSIONS. */
1923 parse_repeat_cons (exp, nbytes)
1925 unsigned int nbytes;
1932 if (*input_line_pointer != ':')
1934 /* No repeat count. */
1938 ++input_line_pointer;
1939 expression (&count);
1940 if (count.X_op != O_constant
1941 || count.X_add_number <= 0)
1943 as_warn ("Unresolvable or nonpositive repeat count; using 1");
1947 /* The cons function is going to output this expression once. So we
1948 output it count - 1 times. */
1949 for (i = count.X_add_number - 1; i > 0; i--)
1950 emit_expr (exp, nbytes);
1953 #endif /* REPEAT_CONS_EXPRESSIONS */
1958 * CONStruct more frag(s) of .quads, or .octa etc.
1959 * Makes 0 or more new frags.
1960 * If need_pass_2 == 1, generate no frag.
1961 * This understands only bignums, not expressions. Cons() understands
1964 * Constants recognised are '0...'(octal) '0x...'(hex) '...'(decimal).
1966 * This creates objects with struct obstack_control objs, destroying
1967 * any context objs held about a partially completed object. Beware!
1970 * I think it sucks to have 2 different types of integers, with 2
1971 * routines to read them, store them etc.
1972 * It would be nicer to permit bignums in expressions and only
1973 * complain if the result overflowed. However, due to "efficiency"...
1975 /* Worker to do .quad etc statements. Clobbers input_line_pointer, checks
1976 end-of-line. 8=.quad 16=.octa ... */
1980 register int nbytes;
1982 register char c; /* input_line_pointer->c. */
1984 register long length; /* Number of chars in an object. */
1985 register int digit; /* Value of 1 digit. */
1986 register int carry; /* For multi-precision arithmetic. */
1987 register int work; /* For multi-precision arithmetic. */
1988 register char *p; /* For multi-precision arithmetic. */
1990 extern const char hex_value[]; /* In hex_value.c. */
1993 * The following awkward logic is to parse ZERO or more strings,
1994 * comma seperated. Recall an expression includes its leading &
1995 * trailing blanks. We fake a leading ',' if there is (supposed to
1996 * be) a 1st expression, and keep demanding 1 expression for each ','.
1998 if (is_it_end_of_statement ())
2000 c = 0; /* Skip loop. */
2004 c = ','; /* Do loop. */
2005 --input_line_pointer;
2009 ++input_line_pointer;
2011 c = *input_line_pointer;
2012 /* C contains 1st non-blank character of what we hope is a number. */
2015 c = *++input_line_pointer;
2016 if (c == 'x' || c == 'X')
2018 c = *++input_line_pointer;
2031 * This feature (?) is here to stop people worrying about
2032 * mysterious zero constants: which is what they get when
2033 * they completely omit digits.
2035 if (hex_value[(unsigned char) c] >= radix)
2037 as_bad ("Missing digits. 0 assumed.");
2039 bignum_high = bignum_low - 1; /* Start constant with 0 chars. */
2041 (digit = hex_value[(unsigned char) c]) < radix;
2042 c = *++input_line_pointer)
2044 /* Multiply existing number by radix, then add digit. */
2046 for (p = bignum_low; p <= bignum_high; p++)
2048 work = (*p & MASK_CHAR) * radix + carry;
2049 *p = work & MASK_CHAR;
2050 carry = work >> BITS_PER_CHAR;
2055 *bignum_high = carry & MASK_CHAR;
2056 know ((carry & ~MASK_CHAR) == 0);
2059 length = bignum_high - bignum_low + 1;
2060 if (length > nbytes)
2062 as_warn ("Most significant bits truncated in integer constant.");
2066 register long leading_zeroes;
2068 for (leading_zeroes = nbytes - length;
2078 char *src = bignum_low;
2079 p = frag_more (nbytes);
2080 if (target_big_endian)
2083 for (i = nbytes - 1; i >= 0; i--)
2087 memcpy (p, bignum_low, (unsigned int) nbytes);
2089 /* C contains character after number. */
2091 c = *input_line_pointer;
2092 /* C contains 1st non-blank character after number. */
2094 demand_empty_rest_of_line ();
2097 /* Extend bignum by 1 char. */
2101 register unsigned long length;
2104 if (bignum_high >= bignum_limit)
2106 length = bignum_limit - bignum_low;
2107 bignum_low = xrealloc (bignum_low, length + length);
2108 bignum_high = bignum_low + length;
2109 bignum_limit = bignum_low + length + length;
2111 } /* grow_bignum(); */
2116 * CONStruct some more frag chars of .floats .ffloats etc.
2117 * Makes 0 or more new frags.
2118 * If need_pass_2 == 1, no frags are emitted.
2119 * This understands only floating literals, not expressions. Sorry.
2121 * A floating constant is defined by atof_generic(), except it is preceded
2122 * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
2123 * reading, I decided to be incompatible. This always tries to give you
2124 * rounded bits to the precision of the pseudo-op. Former AS did premature
2125 * truncatation, restored noisy bits instead of trailing 0s AND gave you
2126 * a choice of 2 flavours of noise according to which of 2 floating-point
2127 * scanners you directed AS to use.
2129 * In: input_line_pointer->whitespace before, or '0' of flonum.
2134 float_cons (float_type)
2135 /* Clobbers input_line-pointer, checks end-of-line. */
2136 register int float_type; /* 'f':.ffloat ... 'F':.float ... */
2139 int length; /* Number of chars in an object. */
2140 register char *err; /* Error from scanning floating literal. */
2141 char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
2143 if (is_it_end_of_statement ())
2145 demand_empty_rest_of_line ();
2151 /* input_line_pointer->1st char of a flonum (we hope!). */
2154 /* Skip any 0{letter} that may be present. Don't even check if the
2155 * letter is legal. Someone may invent a "z" format and this routine
2156 * has no use for such information. Lusers beware: you get
2157 * diagnostics if your input is ill-conditioned.
2159 if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1]))
2160 input_line_pointer += 2;
2162 err = md_atof (float_type, temp, &length);
2163 know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
2167 as_bad ("Bad floating literal: %s", err);
2168 ignore_rest_of_line ();
2178 #ifdef REPEAT_CONS_EXPRESSIONS
2179 if (*input_line_pointer == ':')
2181 expressionS count_exp;
2183 ++input_line_pointer;
2184 expression (&count_exp);
2185 if (count_exp.X_op != O_constant
2186 || count_exp.X_add_number <= 0)
2188 as_warn ("unresolvable or nonpositive repeat count; using 1");
2191 count = count_exp.X_add_number;
2195 while (--count >= 0)
2197 p = frag_more (length);
2198 memcpy (p, temp, (unsigned int) length);
2203 while (*input_line_pointer++ == ',');
2205 --input_line_pointer; /* Put terminator back into stream. */
2206 demand_empty_rest_of_line ();
2207 } /* float_cons() */
2212 * We read 0 or more ',' seperated, double-quoted strings.
2214 * Caller should have checked need_pass_2 is FALSE because we don't check it.
2219 stringer (append_zero) /* Worker to do .ascii etc statements. */
2220 /* Checks end-of-line. */
2221 register int append_zero; /* 0: don't append '\0', else 1 */
2223 register unsigned int c;
2226 * The following awkward logic is to parse ZERO or more strings,
2227 * comma seperated. Recall a string expression includes spaces
2228 * before the opening '\"' and spaces after the closing '\"'.
2229 * We fake a leading ',' if there is (supposed to be)
2230 * a 1st, expression. We keep demanding expressions for each
2233 if (is_it_end_of_statement ())
2235 c = 0; /* Skip loop. */
2236 ++input_line_pointer; /* Compensate for end of loop. */
2240 c = ','; /* Do loop. */
2242 while (c == ',' || c == '<' || c == '"')
2245 switch (*input_line_pointer)
2248 ++input_line_pointer; /*->1st char of string. */
2249 while (is_a_char (c = next_char_of_string ()))
2251 FRAG_APPEND_1_CHAR (c);
2255 FRAG_APPEND_1_CHAR (0);
2257 know (input_line_pointer[-1] == '\"');
2260 input_line_pointer++;
2261 c = get_single_number ();
2262 FRAG_APPEND_1_CHAR (c);
2263 if (*input_line_pointer != '>')
2265 as_bad ("Expected <nn>");
2267 input_line_pointer++;
2270 input_line_pointer++;
2274 c = *input_line_pointer;
2277 demand_empty_rest_of_line ();
2280 /* FIXME-SOMEDAY: I had trouble here on characters with the
2281 high bits set. We'll probably also have trouble with
2282 multibyte chars, wide chars, etc. Also be careful about
2283 returning values bigger than 1 byte. xoxorich. */
2286 next_char_of_string ()
2288 register unsigned int c;
2290 c = *input_line_pointer++ & CHAR_MASK;
2298 switch (c = *input_line_pointer++)
2328 break; /* As itself. */
2343 for (number = 0; isdigit (c); c = *input_line_pointer++)
2345 number = number * 8 + c - '0';
2349 --input_line_pointer;
2353 /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
2354 as_warn ("Unterminated string: Newline inserted.");
2360 #ifdef ONLY_STANDARD_ESCAPES
2361 as_bad ("Bad escaped character in string, '?' assumed");
2363 #endif /* ONLY_STANDARD_ESCAPES */
2366 } /* switch on escaped char */
2371 } /* switch on char */
2373 } /* next_char_of_string() */
2376 get_segmented_expression (expP)
2377 register expressionS *expP;
2379 register segT retval;
2381 retval = expression (expP);
2382 if (expP->X_op == O_illegal
2383 || expP->X_op == O_absent
2384 || expP->X_op == O_big)
2386 as_bad ("expected address expression; zero assumed");
2387 expP->X_op = O_constant;
2388 expP->X_add_number = 0;
2389 retval = absolute_section;
2395 get_known_segmented_expression (expP)
2396 register expressionS *expP;
2398 register segT retval;
2400 if ((retval = get_segmented_expression (expP)) == undefined_section)
2402 /* There is no easy way to extract the undefined symbol from the
2404 if (expP->X_add_symbol != NULL
2405 && S_GET_SEGMENT (expP->X_add_symbol) != expr_section)
2406 as_warn ("symbol \"%s\" undefined; zero assumed",
2407 S_GET_NAME (expP->X_add_symbol));
2409 as_warn ("some symbol undefined; zero assumed");
2410 retval = absolute_section;
2411 expP->X_op = O_constant;
2412 expP->X_add_number = 0;
2414 know (retval == absolute_section || SEG_NORMAL (retval));
2416 } /* get_known_segmented_expression() */
2419 get_absolute_expression ()
2424 if (exp.X_op != O_constant)
2426 if (exp.X_op != O_absent)
2427 as_bad ("bad absolute expression; zero assumed");
2428 exp.X_add_number = 0;
2430 return exp.X_add_number;
2433 char /* return terminator */
2434 get_absolute_expression_and_terminator (val_pointer)
2435 long *val_pointer; /* return value of expression */
2437 /* FIXME: val_pointer should probably be offsetT *. */
2438 *val_pointer = (long) get_absolute_expression ();
2439 return (*input_line_pointer++);
2443 * demand_copy_C_string()
2445 * Like demand_copy_string, but return NULL if the string contains any '\0's.
2446 * Give a warning if that happens.
2449 demand_copy_C_string (len_pointer)
2454 if ((s = demand_copy_string (len_pointer)) != 0)
2458 for (len = *len_pointer;
2467 as_bad ("This string may not contain \'\\0\'");
2475 * demand_copy_string()
2477 * Demand string, but return a safe (=private) copy of the string.
2478 * Return NULL if we can't read a string here.
2481 demand_copy_string (lenP)
2484 register unsigned int c;
2490 if (*input_line_pointer == '\"')
2492 input_line_pointer++; /* Skip opening quote. */
2494 while (is_a_char (c = next_char_of_string ()))
2496 obstack_1grow (¬es, c);
2499 /* JF this next line is so demand_copy_C_string will return a null
2500 termanated string. */
2501 obstack_1grow (¬es, '\0');
2502 retval = obstack_finish (¬es);
2506 as_warn ("Missing string");
2508 ignore_rest_of_line ();
2512 } /* demand_copy_string() */
2515 * is_it_end_of_statement()
2517 * In: Input_line_pointer->next character.
2519 * Do: Skip input_line_pointer over all whitespace.
2521 * Out: 1 if input_line_pointer->end-of-line.
2524 is_it_end_of_statement ()
2527 return (is_end_of_line[(unsigned char) *input_line_pointer]);
2528 } /* is_it_end_of_statement() */
2534 register symbolS *symbolP; /* symbol we are working with */
2536 input_line_pointer++;
2537 if (*input_line_pointer == '=')
2538 input_line_pointer++;
2540 while (*input_line_pointer == ' ' || *input_line_pointer == '\t')
2541 input_line_pointer++;
2543 if (sym_name[0] == '.' && sym_name[1] == '\0')
2545 /* Turn '. = mumble' into a .org mumble */
2546 register segT segment;
2550 segment = get_known_segmented_expression (&exp);
2553 if (segment != now_seg && segment != absolute_section)
2554 as_warn ("Illegal segment \"%s\". Segment \"%s\" assumed.",
2555 segment_name (segment),
2556 segment_name (now_seg));
2557 p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol,
2558 exp.X_add_number, (char *) 0);
2560 } /* if (ok to make frag) */
2564 symbolP = symbol_find_or_make (sym_name);
2565 pseudo_set (symbolP);
2569 /* .include -- include a file at this point. */
2582 filename = demand_copy_string (&i);
2583 demand_empty_rest_of_line ();
2584 path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ );
2585 for (i = 0; i < include_dir_count; i++)
2587 strcpy (path, include_dirs[i]);
2589 strcat (path, filename);
2590 if (0 != (try = fopen (path, "r")))
2599 /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
2600 newbuf = input_scrub_include_file (path, input_line_pointer);
2601 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2605 add_include_dir (path)
2610 if (include_dir_count == 0)
2612 include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs));
2613 include_dirs[0] = "."; /* Current dir */
2614 include_dir_count = 2;
2618 include_dir_count++;
2619 include_dirs = (char **) realloc (include_dirs,
2620 include_dir_count * sizeof (*include_dirs));
2623 include_dirs[include_dir_count - 1] = path; /* New one */
2626 if (i > include_dir_maxlen)
2627 include_dir_maxlen = i;
2628 } /* add_include_dir() */
2634 while (!is_end_of_line[(unsigned char) *input_line_pointer])
2636 ++input_line_pointer;
2638 ++input_line_pointer;
2644 * Handle .stabX directives, which used to be open-coded.
2645 * So much creeping featurism overloaded the semantics that we decided
2646 * to put all .stabX thinking in one place. Here.
2648 * We try to make any .stabX directive legal. Other people's AS will often
2649 * do assembly-time consistency checks: eg assigning meaning to n_type bits
2650 * and "protecting" you from setting them to certain values. (They also zero
2651 * certain bits before emitting symbols. Tut tut.)
2653 * If an expression is not absolute we either gripe or use the relocation
2654 * information. Other people's assemblers silently forget information they
2655 * don't need and invent information they need that you didn't supply.
2659 change_to_section (name, len, exp)
2664 #ifndef BFD_ASSEMBLER
2665 #ifdef MANY_SEGMENTS
2667 extern segment_info_type segment_info[];
2669 /* Find out if we've already got a section of this name etc */
2670 for (i = SEG_E0; i < SEG_E9 && segment_info[i].scnhdr.s_name[0]; i++)
2672 if (strncmp (segment_info[i].scnhdr.s_name, name, len) == 0)
2674 subseg_set (i, exp);
2678 /* No section, add one */
2679 strncpy (segment_info[i].scnhdr.s_name, name, 8);
2680 segment_info[i].scnhdr.s_flags = 0 /* STYP_NOLOAD */;
2681 subseg_set (i, exp);
2687 * Build a string dictionary entry for a .stabX symbol.
2688 * The symbol is added to the .<secname>str section.
2691 #ifdef SEPARATE_STAB_SECTIONS
2694 get_stab_string_offset (string, secname)
2695 char *string, *secname;
2699 subsegT save_subseg;
2700 unsigned int length;
2701 unsigned int old_gdb_string_index;
2705 /* @@FIXME -- there should be no static data here!
2706 This also has the effect of making all stab string tables large enough
2707 to contain all the contents written to any of them. This only matters
2708 with the Solaris native compiler for the moment, but it should be fixed
2710 static unsigned int gdb_string_index = 0;
2712 old_gdb_string_index = 0;
2713 length = strlen (string);
2714 clengthP = (char *) &length;
2716 { /* Ordinary case. */
2718 save_subseg = now_subseg;
2720 /* Create the stabstr sections, if they are not already created. */
2722 char *newsecname = xmalloc (strlen (secname) + 4);
2723 strcpy (newsecname, secname);
2724 strcat (newsecname, "str");
2725 #ifdef BFD_ASSEMBLER
2726 seg = bfd_get_section_by_name (stdoutput, newsecname);
2729 seg = bfd_make_section_old_way (stdoutput, newsecname);
2730 bfd_set_section_flags (stdoutput, seg, SEC_READONLY | SEC_ALLOC);
2733 subseg_new (newsecname, 0);
2735 /* free (newsecname);*/
2737 subseg_set (seg, save_subseg);
2738 old_gdb_string_index = gdb_string_index;
2740 while ((c = *string++))
2744 FRAG_APPEND_1_CHAR (c);
2747 FRAG_APPEND_1_CHAR ((char) 0);
2753 FRAG_APPEND_1_CHAR ((char) 0);
2757 subseg_set (save_seg, save_subseg);
2759 return old_gdb_string_index;
2762 #endif /* SEPARATE_STAB_SECTIONS */
2764 /* This can handle different kinds of stabs (s,n,d) and different
2765 kinds of stab sections. */
2768 s_stab_generic (what, secname)
2780 segT saved_seg = now_seg;
2782 subsegT saved_subseg = now_subseg;
2785 #ifdef SEPARATE_STAB_SECTIONS
2789 valu = ((char *) obstack_next_free (&frags)) - frag_now->fr_literal;
2791 #ifdef SEPARATE_STAB_SECTIONS
2792 #ifdef BFD_ASSEMBLER
2793 seg = bfd_get_section_by_name (stdoutput, secname);
2796 seg = subseg_new (secname, 0);
2797 bfd_set_section_flags (stdoutput, seg,
2798 SEC_READONLY | SEC_ALLOC | SEC_RELOC);
2799 subseg_set (saved_seg, subseg);
2803 subseg_new (secname, 0);
2805 #endif /* SEPARATE_STAB_SECTIONS */
2808 * Enter with input_line_pointer pointing past .stabX and any following
2813 string = demand_copy_C_string (&length);
2815 if (*input_line_pointer == ',')
2816 input_line_pointer++;
2819 as_bad ("I need a comma after symbol's name");
2827 * Input_line_pointer->after ','. String->symbol name.
2831 #ifdef MAKE_STAB_SYMBOL
2832 MAKE_STAB_SYMBOL(symbol, string, secname);
2834 symbol = symbol_new (string, undefined_section, 0, (struct frag *) 0);
2836 /* Make sure that the rest of this is going to work. */
2838 as_fatal ("no stab symbol created");
2843 S_SET_NAME (symbol, NULL); /* .stabd feature. */
2844 #ifdef STAB_SYMBOL_SET_VALUE
2845 STAB_SYMBOL_SET_VALUE (symbol, valu);
2847 S_SET_VALUE (symbol, valu);
2849 #if STAB_SYMBOL_SET_SEGMENT
2851 S_SET_SEGMENT (symbol, now_seg);
2853 symbol->sy_frag = frag_now;
2857 symbol->sy_frag = &zero_address_frag;
2861 symbol->sy_frag = &zero_address_frag;
2869 if (get_absolute_expression_and_terminator (&longint) == ',')
2871 saved_type = longint;
2872 S_SET_TYPE (symbol, saved_type);
2876 as_bad ("I want a comma after the n_type expression");
2878 input_line_pointer--; /* Backup over a non-',' char. */
2884 if (get_absolute_expression_and_terminator (&longint) == ',')
2885 S_SET_OTHER (symbol, longint);
2888 as_bad ("I want a comma after the n_other expression");
2890 input_line_pointer--; /* Backup over a non-',' char. */
2896 S_SET_DESC (symbol, get_absolute_expression ());
2897 if (what == 's' || what == 'n')
2899 if (*input_line_pointer != ',')
2901 as_bad ("I want a comma after the n_desc expression");
2906 input_line_pointer++;
2911 /* Line is messed up - ignore it and get out of here. */
2914 ignore_rest_of_line ();
2915 subseg_set (saved_seg, saved_subseg);
2919 subseg_set (seg, subseg);
2921 #if 0 /* needed for elf only? */
2923 /* allocate and discard -- filled in later */
2924 (void) frag_more (12);
2927 #ifdef SEPARATE_STAB_SECTIONS
2931 subseg_new (secname, 0);
2932 toP = frag_more (8);
2933 /* the string index portion of the stab */
2934 md_number_to_chars (toP, (valueT) S_GET_OFFSET_2(symbol), 4);
2935 md_number_to_chars (toP + 4, (valueT) S_GET_TYPE(symbol), 1);
2936 md_number_to_chars (toP + 5, (valueT) S_GET_OTHER(symbol), 1);
2937 md_number_to_chars (toP + 6, (valueT) S_GET_DESC(symbol), 2);
2941 #ifdef SEPARATE_STAB_SECTIONS
2942 if (what == 's' || what == 'n')
2945 input_line_pointer--;
2949 char *p = frag_more (4);
2950 md_number_to_chars (p, 0, 4);
2952 subseg_set (saved_seg, subseg);
2954 if (what == 's' || what == 'n')
2956 pseudo_set (symbol);
2957 S_SET_TYPE (symbol, saved_type);
2961 #if 0 /* for elf only? */
2962 if (what == 's' && S_GET_TYPE (symbol) == N_SO)
2964 fragS *fragp = seg_info (seg)->frchainP->frch_root;
2966 && fragp->fr_address + fragp->fr_fix < 12)
2967 fragp = fragp->fr_next;
2968 assert (fragp != 0);
2969 assert (fragp->fr_type == rs_fill);
2970 assert (fragp->fr_address == 0 && fragp->fr_fix >= 12);
2971 md_number_to_chars (fragp->fr_literal, (valueT) symbol->sy_name_offset,
2978 switch (S_GET_TYPE (symbol))
2981 listing_source_line ((unsigned int) S_GET_DESC (symbol));
2985 listing_source_file (string);
2988 #endif /* !NO_LISTING */
2990 #ifdef SEPARATE_STAB_SECTIONS
2991 subseg_set (saved_seg, saved_subseg);
2994 demand_empty_rest_of_line ();
2997 /* Regular stab directive. */
3003 s_stab_generic (what, ".stab");
3006 /* "Extended stabs", used in Solaris only now. */
3015 secname = demand_copy_C_string (&length);
3017 if (*input_line_pointer == ',')
3018 input_line_pointer++;
3021 as_bad ("comma missing in .xstabs");
3022 ignore_rest_of_line ();
3025 s_stab_generic (what, secname);
3030 /* Frob invented at RMS' request. Set the n_desc of a symbol. */
3042 name = input_line_pointer;
3043 c = get_symbol_end ();
3044 p = input_line_pointer;
3047 if (*input_line_pointer != ',')
3050 as_bad ("Expected comma after name \"%s\"", name);
3052 ignore_rest_of_line ();
3056 input_line_pointer++;
3057 temp = get_absolute_expression ();
3059 symbolP = symbol_find_or_make (name);
3061 S_SET_DESC (symbolP, temp);
3063 demand_empty_rest_of_line ();
3066 #endif /* defined (S_SET_DESC) */