1 /* read.c - read a source file -
2 Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF).
24 But then, GNU isn't spozed to run on your machine anyway.
25 (RMS is so shortsighted sometimes.) */
26 #define MASK_CHAR ((int)(unsigned char) -1)
28 /* This is the largest known floating point format (for now). It will
29 grow when we do 4361 style flonums. */
30 #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
32 /* Routines that read assembler source text to build spaghetti in memory.
33 Another group of these functions is in the expr.c module. */
36 #include "safe-ctype.h"
43 #include "dw2gencfi.h"
45 #ifndef TC_START_LABEL
46 #define TC_START_LABEL(x,y) (x == ':')
49 /* Set by the object-format or the target. */
50 #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
51 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
56 else if ((SIZE) >= 4) \
58 else if ((SIZE) >= 2) \
66 char *input_line_pointer; /*->next char of source file to parse. */
68 #if BITS_PER_CHAR != 8
69 /* The following table is indexed by[(char)] and will break if
70 a char does not have exactly 256 states (hopefully 0:255!)! */
79 /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */
84 /* The Delta 68k assembler permits % inside label names. */
89 /* The PowerPC Windows NT assemblers permits ? inside label names. */
94 /* The IA-64 assembler uses # as a suffix designating a symbol. We include
95 it in the symbol and strip it out in tc_canonicalize_symbol_name. */
104 /* The Delta 68k assembler permits ~ at start of label names. */
108 /* Used by is_... macros. our ctype[]. */
109 char lex_type[256] = {
110 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
111 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
112 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
113 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */
114 LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
115 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */
116 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
117 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */
118 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
119 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
120 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
121 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
122 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
123 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
124 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
125 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
129 Out: 1 if this character ends a line. */
130 char is_end_of_line[256] = {
132 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
134 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */
136 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
137 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */
138 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
139 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
140 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
141 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
142 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
143 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
144 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
145 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
146 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
147 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
148 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
149 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
150 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */
153 #ifndef TC_CASE_SENSITIVE
154 char original_case_string[128];
157 /* Functions private to this file. */
159 static char *buffer; /* 1st char of each buffer of lines is here. */
160 static char *buffer_limit; /*->1 + last char in buffer. */
162 /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1
163 in the tc-<CPU>.h file. See the "Porting GAS" section of the
165 int target_big_endian = TARGET_BYTES_BIG_ENDIAN;
167 /* Variables for handling include file directory table. */
169 /* Table of pointers to directories to search for .include's. */
172 /* How many are in the table. */
173 int include_dir_count;
175 /* Length of longest in table. */
176 int include_dir_maxlen = 1;
178 #ifndef WORKING_DOT_WORD
179 struct broken_word *broken_words;
180 int new_broken_words;
183 /* The current offset into the absolute section. We don't try to
184 build frags in the absolute section, since no data can be stored
185 there. We just keep track of the current offset. */
186 addressT abs_section_offset;
188 /* If this line had an MRI style label, it is stored in this variable.
189 This is used by some of the MRI pseudo-ops. */
192 /* This global variable is used to support MRI common sections. We
193 translate such sections into a common symbol. This variable is
194 non-NULL when we are in an MRI common section. */
195 symbolS *mri_common_symbol;
197 /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we
198 need to align to an even byte boundary unless the next pseudo-op is
199 dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment
201 static int mri_pending_align;
205 /* This variable is set to be non-zero if the next string we see might
206 be the name of the source file in DWARF debugging information. See
207 the comment in emit_expr for the format we look for. */
208 static int dwarf_file_string;
212 static void do_s_func (int end_p, const char *default_prefix);
213 static void do_align (int, char *, int, int);
214 static void s_align (int, int);
215 static void s_altmacro (int);
216 static void s_bad_end (int);
217 static int hex_float (int, char *);
218 static segT get_known_segmented_expression (expressionS * expP);
219 static void pobegin (void);
220 static int get_line_sb (sb *);
221 static void generate_file_debug (void);
222 static char *_find_end_of_line (char *, int, int);
230 obj_read_begin_hook ();
232 /* Something close -- but not too close -- to a multiple of 1024.
233 The debugging malloc I'm using has 24 bytes of overhead. */
234 obstack_begin (¬es, chunksize);
235 obstack_begin (&cond_obstack, chunksize);
237 /* Use machine dependent syntax. */
238 for (p = line_separator_chars; *p; p++)
239 is_end_of_line[(unsigned char) *p] = 1;
240 /* Use more. FIXME-SOMEDAY. */
246 #ifndef TC_ADDRESS_BYTES
247 #define TC_ADDRESS_BYTES address_bytes
252 /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to
253 contain an address. */
254 int n = (stdoutput->arch_info->bits_per_address - 1) / 8;
262 /* Set up pseudo-op tables. */
264 static struct hash_control *po_hash;
266 static const pseudo_typeS potable[] = {
267 {"abort", s_abort, 0},
268 {"align", s_align_ptwo, 0},
269 {"altmacro", s_altmacro, 1},
270 {"ascii", stringer, 0},
271 {"asciz", stringer, 1},
272 {"balign", s_align_bytes, 0},
273 {"balignw", s_align_bytes, -2},
274 {"balignl", s_align_bytes, -4},
278 {"common", s_mri_common, 0},
279 {"common.s", s_mri_common, 1},
282 #ifdef TC_ADDRESS_BYTES
286 {"dc.d", float_cons, 'd'},
288 {"dc.s", float_cons, 'f'},
290 {"dc.x", float_cons, 'x'},
292 {"dcb.b", s_space, 1},
293 {"dcb.d", s_float_space, 'd'},
294 {"dcb.l", s_space, 4},
295 {"dcb.s", s_float_space, 'f'},
296 {"dcb.w", s_space, 2},
297 {"dcb.x", s_float_space, 'x'},
299 {"ds.b", s_space, 1},
300 {"ds.d", s_space, 8},
301 {"ds.l", s_space, 4},
302 {"ds.p", s_space, 12},
303 {"ds.s", s_space, 4},
304 {"ds.w", s_space, 2},
305 {"ds.x", s_space, 12},
306 {"debug", s_ignore, 0},
311 {"double", float_cons, 'd'},
313 {"eject", listing_eject, 0}, /* Formfeed listing. */
315 {"elsec", s_else, 0},
316 {"elseif", s_elseif, (int) O_ne},
318 {"endc", s_endif, 0},
319 {"endfunc", s_func, 1},
320 {"endif", s_endif, 0},
321 {"endm", s_bad_end, 0},
322 {"endr", s_bad_end, 1},
328 {"error", s_errwarn, 1},
329 {"exitm", s_mexit, 0},
331 {"extern", s_ignore, 0}, /* We treat all undef as ext. */
332 {"appfile", s_app_file, 1},
333 {"appline", s_app_line, 0},
335 {"file", s_app_file, 0},
337 {"float", float_cons, 'f'},
338 {"format", s_ignore, 0},
340 {"global", s_globl, 0},
341 {"globl", s_globl, 0},
343 {"if", s_if, (int) O_ne},
346 {"ifdef", s_ifdef, 0},
347 {"ifeq", s_if, (int) O_eq},
348 {"ifeqs", s_ifeqs, 0},
349 {"ifge", s_if, (int) O_ge},
350 {"ifgt", s_if, (int) O_gt},
351 {"ifle", s_if, (int) O_le},
352 {"iflt", s_if, (int) O_lt},
355 {"ifndef", s_ifdef, 1},
356 {"ifne", s_if, (int) O_ne},
357 {"ifnes", s_ifeqs, 1},
358 {"ifnotdef", s_ifdef, 1},
359 {"incbin", s_incbin, 0},
360 {"include", s_include, 0},
366 {"lcomm", s_lcomm, 0},
367 {"lflags", listing_flags, 0}, /* Listing flags. */
368 {"linkonce", s_linkonce, 0},
369 {"list", listing_list, 1}, /* Turn listing on. */
370 {"llen", listing_psize, 1},
373 {"macro", s_macro, 0},
374 {"mexit", s_mexit, 0},
376 {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */
377 {"name", s_ignore, 0},
378 {"noaltmacro", s_altmacro, 0},
379 {"noformat", s_ignore, 0},
380 {"nolist", listing_list, 0}, /* Turn listing off. */
381 {"nopage", listing_nopage, 0},
383 {"offset", s_struct, 0},
385 {"p2align", s_align_ptwo, 0},
386 {"p2alignw", s_align_ptwo, -2},
387 {"p2alignl", s_align_ptwo, -4},
388 {"page", listing_eject, 0},
389 {"plen", listing_psize, 0},
390 {"print", s_print, 0},
391 {"psize", listing_psize, 0}, /* Set paper size. */
392 {"purgem", s_purgem, 0},
397 {"sbttl", listing_title, 1}, /* Subtitle of listing. */
402 {"single", float_cons, 'f'},
404 {"space", s_space, 0},
405 {"skip", s_space, 0},
406 {"sleb128", s_leb128, 1},
407 {"spc", s_ignore, 0},
408 {"stabd", s_stab, 'd'},
409 {"stabn", s_stab, 'n'},
410 {"stabs", s_stab, 's'},
411 {"string", stringer, 1},
412 {"struct", s_struct, 0},
416 /* This is for gcc to use. It's only just been added (2/94), so gcc
417 won't be able to use it for a while -- probably a year or more.
418 But once this has been released, check with gcc maintainers
419 before deleting it or even changing the spelling. */
420 {"this_GCC_requires_the_GNU_assembler", s_ignore, 0},
421 /* If we're folding case -- done for some targets, not necessarily
422 all -- the above string in an input file will be converted to
423 this one. Match it either way... */
424 {"this_gcc_requires_the_gnu_assembler", s_ignore, 0},
426 {"title", listing_title, 0}, /* Listing title. */
427 {"ttl", listing_title, 0},
429 {"uleb128", s_leb128, 0},
433 {"xdef", s_globl, 0},
434 {"xref", s_ignore, 0},
435 {"xstabs", s_xstab, 's'},
436 {"warning", s_errwarn, 0},
437 {"weakref", s_weakref, 0},
439 {"zero", s_space, 0},
440 {NULL, NULL, 0} /* End sentinel. */
444 get_absolute_expr (expressionS *exp)
446 expression_and_evaluate (exp);
447 if (exp->X_op != O_constant)
449 if (exp->X_op != O_absent)
450 as_bad (_("bad or irreducible absolute expression"));
451 exp->X_add_number = 0;
453 return exp->X_add_number;
457 get_absolute_expression (void)
461 return get_absolute_expr (&exp);
464 static int pop_override_ok = 0;
465 static const char *pop_table_name;
468 pop_insert (const pseudo_typeS *table)
471 const pseudo_typeS *pop;
472 for (pop = table; pop->poc_name; pop++)
474 errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
475 if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists")))
476 as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name,
481 #ifndef md_pop_insert
482 #define md_pop_insert() pop_insert(md_pseudo_table)
485 #ifndef obj_pop_insert
486 #define obj_pop_insert() pop_insert(obj_pseudo_table)
489 #ifndef cfi_pop_insert
490 #define cfi_pop_insert() pop_insert(cfi_pseudo_table)
496 po_hash = hash_new ();
498 /* Do the target-specific pseudo ops. */
499 pop_table_name = "md";
502 /* Now object specific. Skip any that were in the target table. */
503 pop_table_name = "obj";
507 /* Now portable ones. Skip any that we've seen already. */
508 pop_table_name = "standard";
509 pop_insert (potable);
511 #ifdef TARGET_USE_CFIPOP
512 pop_table_name = "cfi";
518 #define HANDLE_CONDITIONAL_ASSEMBLY() \
519 if (ignore_input ()) \
521 char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \
522 input_line_pointer = (input_line_pointer <= buffer_limit \
523 && eol >= buffer_limit) \
529 /* This function is used when scrubbing the characters between #APP
532 static char *scrub_string;
533 static char *scrub_string_end;
536 scrub_from_string (char *buf, int buflen)
540 copy = scrub_string_end - scrub_string;
543 memcpy (buf, scrub_string, copy);
544 scrub_string += copy;
548 /* Helper function of read_a_source_file, which tries to expand a macro. */
550 try_macro (char term, const char *line)
556 if (check_macro (line, &out, &err, ¯o))
560 *input_line_pointer++ = term;
561 input_scrub_include_sb (&out,
562 input_line_pointer, 1);
565 input_scrub_next_buffer (&input_line_pointer);
567 md_macro_info (macro);
574 /* We read the file, putting things into a web that represents what we
575 have been reading. */
577 read_a_source_file (char *name)
580 register char *s; /* String of symbol, '\0' appended. */
588 buffer = input_scrub_new_file (name);
591 listing_newline (NULL);
592 register_dependency (name);
594 /* Generate debugging information before we've read anything in to denote
595 this file as the "main" source file and not a subordinate one
596 (e.g. N_SO vs N_SOL in stabs). */
597 generate_file_debug ();
599 while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)
600 { /* We have another line to parse. */
602 /* In order to avoid listing macro expansion lines with labels
603 multiple times, keep track of which line was last issued. */
604 static char *last_eol;
608 know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */
610 while (input_line_pointer < buffer_limit)
612 /* We have more of this buffer to parse. */
614 /* We now have input_line_pointer->1st char of next line.
615 If input_line_pointer [-1] == '\n' then we just
616 scanned another line: so bump line counters. */
617 if (is_end_of_line[(unsigned char) input_line_pointer[-1]])
619 #ifdef md_start_line_hook
620 md_start_line_hook ();
622 if (input_line_pointer[-1] == '\n')
623 bump_line_counters ();
627 if (LABELS_WITHOUT_COLONS || flag_m68k_mri)
629 /* Text at the start of a line must be a label, we
630 run down and stick a colon in. */
631 if (is_name_beginner (*input_line_pointer))
633 char *line_start = input_line_pointer;
638 HANDLE_CONDITIONAL_ASSEMBLY ();
640 c = get_symbol_end ();
642 /* In MRI mode, the EQU and MACRO pseudoops must
643 be handled specially. */
647 char *rest = input_line_pointer + 1;
651 if (*rest == ' ' || *rest == '\t')
653 if ((strncasecmp (rest, "EQU", 3) == 0
654 || strncasecmp (rest, "SET", 3) == 0)
655 && (rest[3] == ' ' || rest[3] == '\t'))
657 input_line_pointer = rest + 3;
659 strncasecmp (rest, "SET", 3) == 0);
662 if (strncasecmp (rest, "MACRO", 5) == 0
665 || is_end_of_line[(unsigned char) rest[5]]))
669 /* In MRI mode, we need to handle the MACRO
670 pseudo-op specially: we don't want to put the
671 symbol in the symbol table. */
673 #ifdef TC_START_LABEL_WITHOUT_COLON
674 && TC_START_LABEL_WITHOUT_COLON(c,
678 line_label = colon (line_start);
680 line_label = symbol_create (line_start,
685 *input_line_pointer = c;
687 input_line_pointer++;
692 /* We are at the beginning of a line, or similar place.
693 We expect a well-formed assembler statement.
694 A "symbol-name:" is a statement.
696 Depending on what compiler is used, the order of these tests
697 may vary to catch most common case 1st.
698 Each test is independent of all other tests at the (top) level.
699 PLEASE make a compiler that doesn't use this assembler.
700 It is crufty to waste a compiler's time encoding things for this
701 assembler, which then wastes more time decoding it.
702 (And communicating via (linear) files is silly!
703 If you must pass stuff, please pass a tree!) */
704 if ((c = *input_line_pointer++) == '\t'
708 c = *input_line_pointer++;
710 know (c != ' '); /* No further leading whitespace. */
713 /* If listing is on, and we are expanding a macro, then give
714 the listing code the contents of the expanded line. */
717 if ((listing & LISTING_MACEXP) && macro_nest > 0)
722 /* Find the end of the current expanded macro line. */
723 s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri);
728 /* Copy it for safe keeping. Also give an indication of
729 how much macro nesting is involved at this point. */
730 len = s - (input_line_pointer - 1);
731 copy = (char *) xmalloc (len + macro_nest + 2);
732 memset (copy, '>', macro_nest);
733 copy[macro_nest] = ' ';
734 memcpy (copy + macro_nest + 1, input_line_pointer - 1, len);
735 copy[macro_nest + 1 + len] = '\0';
737 /* Install the line with the listing facility. */
738 listing_newline (copy);
742 listing_newline (NULL);
745 /* C is the 1st significant character.
746 Input_line_pointer points after that character. */
747 if (is_name_beginner (c))
749 /* Want user-defined label or pseudo/opcode. */
750 HANDLE_CONDITIONAL_ASSEMBLY ();
752 s = --input_line_pointer;
753 c = get_symbol_end (); /* name's delimiter. */
755 /* C is character after symbol.
756 That character's place in the input line is now '\0'.
757 S points to the beginning of the symbol.
758 [In case of pseudo-op, s->'.'.]
759 Input_line_pointer->'\0' where c was. */
760 if (TC_START_LABEL (c, input_line_pointer))
764 char *rest = input_line_pointer + 1;
766 /* In MRI mode, \tsym: set 0 is permitted. */
770 if (*rest == ' ' || *rest == '\t')
773 if ((strncasecmp (rest, "EQU", 3) == 0
774 || strncasecmp (rest, "SET", 3) == 0)
775 && (rest[3] == ' ' || rest[3] == '\t'))
777 input_line_pointer = rest + 3;
783 line_label = colon (s); /* User-defined label. */
784 /* Put ':' back for error messages' sake. */
785 *input_line_pointer++ = ':';
786 #ifdef tc_check_label
787 tc_check_label (line_label);
789 /* Input_line_pointer->after ':'. */
792 else if (input_line_pointer[1] == '='
794 || ((c == ' ' || c == '\t')
795 && input_line_pointer[2] == '=')))
798 demand_empty_rest_of_line ();
801 || ((c == ' ' || c == '\t')
802 && input_line_pointer[1] == '='))
803 #ifdef TC_EQUAL_IN_INSN
804 && !TC_EQUAL_IN_INSN (c, s)
809 demand_empty_rest_of_line ();
813 /* Expect pseudo-op or machine instruction. */
816 #ifndef TC_CASE_SENSITIVE
820 strncpy (original_case_string, s2, sizeof (original_case_string));
821 original_case_string[sizeof (original_case_string) - 1] = 0;
830 if (NO_PSEUDO_DOT || flag_m68k_mri)
832 /* The MRI assembler uses pseudo-ops without
834 pop = (pseudo_typeS *) hash_find (po_hash, s);
835 if (pop != NULL && pop->poc_handler == NULL)
840 || (!flag_m68k_mri && *s == '.'))
844 WARNING: c has next char, which may be end-of-line.
845 We lookup the pseudo-op table with s+1 because we
846 already know that the pseudo-op begins with a '.'. */
849 pop = (pseudo_typeS *) hash_find (po_hash, s + 1);
850 if (pop && !pop->poc_handler)
853 /* In MRI mode, we may need to insert an
854 automatic alignment directive. What a hack
856 if (mri_pending_align
858 || !((pop->poc_handler == cons
859 && pop->poc_val == 1)
860 || (pop->poc_handler == s_space
861 && pop->poc_val == 1)
862 #ifdef tc_conditional_pseudoop
863 || tc_conditional_pseudoop (pop)
865 || pop->poc_handler == s_if
866 || pop->poc_handler == s_ifdef
867 || pop->poc_handler == s_ifc
868 || pop->poc_handler == s_ifeqs
869 || pop->poc_handler == s_else
870 || pop->poc_handler == s_endif
871 || pop->poc_handler == s_globl
872 || pop->poc_handler == s_ignore)))
874 do_align (1, (char *) NULL, 0, 0);
875 mri_pending_align = 0;
877 if (line_label != NULL)
879 symbol_set_frag (line_label, frag_now);
880 S_SET_VALUE (line_label, frag_now_fix ());
884 /* Print the error msg now, while we still can. */
887 char *end = input_line_pointer;
889 *input_line_pointer = c;
891 c = *--input_line_pointer;
892 *input_line_pointer = '\0';
893 if (! macro_defined || ! try_macro (c, s))
896 as_bad (_("unknown pseudo-op: `%s'"), s);
897 *input_line_pointer++ = c;
902 /* Put it back for error messages etc. */
903 *input_line_pointer = c;
904 /* The following skip of whitespace is compulsory.
905 A well shaped space is sometimes all that separates
906 keyword from operands. */
907 if (c == ' ' || c == '\t')
908 input_line_pointer++;
910 /* Input_line is restored.
911 Input_line_pointer->1st non-blank char
912 after pseudo-operation. */
913 (*pop->poc_handler) (pop->poc_val);
915 /* If that was .end, just get out now. */
916 if (pop->poc_handler == s_end)
921 /* WARNING: c has char, which may be end-of-line. */
922 /* Also: input_line_pointer->`\0` where c was. */
923 *input_line_pointer = c;
924 input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1);
925 c = *input_line_pointer;
926 *input_line_pointer = '\0';
928 generate_lineno_debug ();
930 if (macro_defined && try_macro (c, s))
933 if (mri_pending_align)
935 do_align (1, (char *) NULL, 0, 0);
936 mri_pending_align = 0;
937 if (line_label != NULL)
939 symbol_set_frag (line_label, frag_now);
940 S_SET_VALUE (line_label, frag_now_fix ());
944 md_assemble (s); /* Assemble 1 instruction. */
946 *input_line_pointer++ = c;
948 /* We resume loop AFTER the end-of-line from
955 /* Empty statement? */
956 if (is_end_of_line[(unsigned char) c])
959 if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c))
961 /* local label ("4:") */
962 char *backup = input_line_pointer;
964 HANDLE_CONDITIONAL_ASSEMBLY ();
968 /* Read the whole number. */
969 while (ISDIGIT (*input_line_pointer))
971 temp = (temp * 10) + *input_line_pointer - '0';
972 ++input_line_pointer;
975 if (LOCAL_LABELS_DOLLAR
976 && *input_line_pointer == '$'
977 && *(input_line_pointer + 1) == ':')
979 input_line_pointer += 2;
981 if (dollar_label_defined (temp))
983 as_fatal (_("label \"%d$\" redefined"), temp);
986 define_dollar_label (temp);
987 colon (dollar_label_name (temp, 0));
992 && *input_line_pointer++ == ':')
994 fb_label_instance_inc (temp);
995 colon (fb_label_name (temp, 0));
999 input_line_pointer = backup;
1000 } /* local label ("4:") */
1002 if (c && strchr (line_comment_chars, c))
1003 { /* Its a comment. Better say APP or NO_APP. */
1008 unsigned int new_length;
1011 bump_line_counters ();
1012 s = input_line_pointer;
1013 if (strncmp (s, "APP\n", 4))
1014 continue; /* We ignore it */
1018 ends = strstr (s, "#NO_APP\n");
1022 unsigned int tmp_len;
1025 /* The end of the #APP wasn't in this buffer. We
1026 keep reading in buffers until we find the #NO_APP
1027 that goes with this #APP There is one. The specs
1029 tmp_len = buffer_limit - s;
1030 tmp_buf = xmalloc (tmp_len + 1);
1031 memcpy (tmp_buf, s, tmp_len);
1034 new_tmp = input_scrub_next_buffer (&buffer);
1038 buffer_limit = new_tmp;
1039 input_line_pointer = buffer;
1040 ends = strstr (buffer, "#NO_APP\n");
1042 num = ends - buffer;
1044 num = buffer_limit - buffer;
1046 tmp_buf = xrealloc (tmp_buf, tmp_len + num);
1047 memcpy (tmp_buf + tmp_len, buffer, num);
1052 input_line_pointer = ends ? ends + 8 : NULL;
1060 input_line_pointer = ends + 8;
1064 scrub_string_end = ends;
1066 new_length = ends - s;
1067 new_buf = (char *) xmalloc (new_length);
1074 space = (new_buf + new_length) - new_tmp;
1075 size = do_scrub_chars (scrub_from_string, new_tmp, space);
1083 new_buf = xrealloc (new_buf, new_length + 100);
1084 new_tmp = new_buf + new_length;
1091 /* We've "scrubbed" input to the preferred format. In the
1092 process we may have consumed the whole of the remaining
1093 file (and included files). We handle this formatted
1094 input similar to that of macro expansion, letting
1095 actual macro expansion (possibly nested) and other
1096 input expansion work. Beware that in messages, line
1097 numbers and possibly file names will be incorrect. */
1098 sb_add_string (&sbuf, new_buf);
1099 input_scrub_include_sb (&sbuf, input_line_pointer, 0);
1101 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
1106 HANDLE_CONDITIONAL_ASSEMBLY ();
1108 #ifdef tc_unrecognized_line
1109 if (tc_unrecognized_line (c))
1112 input_line_pointer--;
1113 /* Report unknown char as ignored. */
1114 demand_empty_rest_of_line ();
1117 #ifdef md_after_pass_hook
1118 md_after_pass_hook ();
1127 /* Close the input file. */
1128 input_scrub_close ();
1129 #ifdef WARN_COMMENTS
1131 if (warn_comment && found_comment)
1132 as_warn_where (found_comment_file, found_comment,
1133 "first comment found here");
1138 /* Convert O_constant expression EXP into the equivalent O_big representation.
1139 Take the sign of the number from X_unsigned rather than X_add_number. */
1142 convert_to_bignum (expressionS *exp)
1147 value = exp->X_add_number;
1148 for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++)
1150 generic_bignum[i] = value & LITTLENUM_MASK;
1151 value >>= LITTLENUM_NUMBER_OF_BITS;
1153 /* Add a sequence of sign bits if the top bit of X_add_number is not
1154 the sign of the original value. */
1155 if ((exp->X_add_number < 0) != !exp->X_unsigned)
1156 generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK;
1158 exp->X_add_number = i;
1161 /* For most MRI pseudo-ops, the line actually ends at the first
1162 nonquoted space. This function looks for that point, stuffs a null
1163 in, and sets *STOPCP to the character that used to be there, and
1164 returns the location.
1166 Until I hear otherwise, I am going to assume that this is only true
1167 for the m68k MRI assembler. */
1170 mri_comment_field (char *stopcp)
1176 know (flag_m68k_mri);
1178 for (s = input_line_pointer;
1179 ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t')
1187 for (s = input_line_pointer;
1188 !is_end_of_line[(unsigned char) *s];
1198 /* Skip to the end of an MRI comment field. */
1201 mri_comment_end (char *stop, int stopc)
1205 input_line_pointer = stop;
1207 while (!is_end_of_line[(unsigned char) *input_line_pointer])
1208 ++input_line_pointer;
1212 s_abort (int ignore ATTRIBUTE_UNUSED)
1214 as_fatal (_(".abort detected. Abandoning ship."));
1217 /* Guts of .align directive. N is the power of two to which to align.
1218 FILL may be NULL, or it may point to the bytes of the fill pattern.
1219 LEN is the length of whatever FILL points to, if anything. MAX is
1220 the maximum number of characters to skip when doing the alignment,
1221 or 0 if there is no maximum. */
1224 do_align (int n, char *fill, int len, int max)
1226 if (now_seg == absolute_section)
1230 if (*fill++ != '\0')
1232 as_warn (_("ignoring fill value in absolute section"));
1239 #ifdef md_flush_pending_output
1240 md_flush_pending_output ();
1243 md_do_align (n, fill, len, max, just_record_alignment);
1246 /* Only make a frag if we HAVE to... */
1247 if (n != 0 && !need_pass_2)
1251 if (subseg_text_p (now_seg))
1252 frag_align_code (n, max);
1254 frag_align (n, 0, max);
1257 frag_align (n, *fill, max);
1259 frag_align_pattern (n, fill, len, max);
1263 just_record_alignment: ATTRIBUTE_UNUSED_LABEL
1266 record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER);
1269 /* Handle the .align pseudo-op. A positive ARG is a default alignment
1270 (in bytes). A negative ARG is the negative of the length of the
1271 fill pattern. BYTES_P is non-zero if the alignment value should be
1272 interpreted as the byte boundary, rather than the power of 2. */
1274 #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1)
1277 s_align (int arg, int bytes_p)
1279 unsigned int align_limit = ALIGN_LIMIT;
1288 stop = mri_comment_field (&stopc);
1290 if (is_end_of_line[(unsigned char) *input_line_pointer])
1295 align = arg; /* Default value from pseudo-op table. */
1299 align = get_absolute_expression ();
1305 /* Convert to a power of 2. */
1310 for (i = 0; (align & 1) == 0; align >>= 1, ++i)
1313 as_bad (_("alignment not a power of 2"));
1319 if (align > align_limit)
1321 align = align_limit;
1322 as_warn (_("alignment too large: %u assumed"), align);
1325 if (*input_line_pointer != ',')
1332 ++input_line_pointer;
1333 if (*input_line_pointer == ',')
1337 fill = get_absolute_expression ();
1342 if (*input_line_pointer != ',')
1346 ++input_line_pointer;
1347 max = get_absolute_expression ();
1354 as_warn (_("expected fill pattern missing"));
1355 do_align (align, (char *) NULL, 0, max);
1370 do_align (align, &fill_char, fill_len, max);
1376 if ((size_t) fill_len > sizeof ab)
1378 md_number_to_chars (ab, fill, fill_len);
1379 do_align (align, ab, fill_len, max);
1383 demand_empty_rest_of_line ();
1386 mri_comment_end (stop, stopc);
1389 /* Handle the .align pseudo-op on machines where ".align 4" means
1390 align to a 4 byte boundary. */
1393 s_align_bytes (int arg)
1398 /* Handle the .align pseudo-op on machines where ".align 4" means align
1399 to a 2**4 boundary. */
1402 s_align_ptwo (int arg)
1407 /* Switch in and out of alternate macro mode. */
1412 demand_empty_rest_of_line ();
1413 macro_set_alternate (on);
1417 s_comm_internal (int param,
1418 symbolS *(*comm_parse_extra) (int, symbolS *, addressT))
1424 symbolS *symbolP = NULL;
1430 stop = mri_comment_field (&stopc);
1432 name = input_line_pointer;
1433 c = get_symbol_end ();
1434 /* Just after name is now '\0'. */
1435 p = input_line_pointer;
1440 as_bad (_("expected symbol name"));
1441 ignore_rest_of_line ();
1447 /* Accept an optional comma after the name. The comma used to be
1448 required, but Irix 5 cc does not generate it for .lcomm. */
1449 if (*input_line_pointer == ',')
1450 input_line_pointer++;
1452 temp = get_absolute_expr (&exp);
1454 size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1;
1455 if (exp.X_op == O_absent)
1457 as_bad (_("missing size expression"));
1458 ignore_rest_of_line ();
1461 else if (temp != size || !exp.X_unsigned)
1463 as_warn (_("size (%ld) out of range, ignored"), (long) temp);
1464 ignore_rest_of_line ();
1469 symbolP = symbol_find_or_make (name);
1470 if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP))
1473 as_bad (_("symbol `%s' is already defined"), name);
1475 ignore_rest_of_line ();
1479 size = S_GET_VALUE (symbolP);
1482 else if (size != temp)
1483 as_warn (_("size of \"%s\" is already %ld; not changing to %ld"),
1484 name, (long) size, (long) temp);
1487 if (comm_parse_extra != NULL)
1488 symbolP = (*comm_parse_extra) (param, symbolP, size);
1491 S_SET_VALUE (symbolP, (valueT) size);
1492 S_SET_EXTERNAL (symbolP);
1493 S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
1496 extern int flag_one;
1497 if (size == 0 || !flag_one)
1498 S_GET_OTHER (symbolP) = const_flag;
1503 demand_empty_rest_of_line ();
1506 mri_comment_end (stop, stopc);
1513 s_comm_internal (ignore, NULL);
1516 /* The MRI COMMON pseudo-op. We handle this by creating a common
1517 symbol with the appropriate name. We make s_space do the right
1518 thing by increasing the size. */
1521 s_mri_common (int small ATTRIBUTE_UNUSED)
1537 stop = mri_comment_field (&stopc);
1541 name = input_line_pointer;
1542 if (!ISDIGIT (*name))
1543 c = get_symbol_end ();
1548 ++input_line_pointer;
1550 while (ISDIGIT (*input_line_pointer));
1552 c = *input_line_pointer;
1553 *input_line_pointer = '\0';
1555 if (line_label != NULL)
1557 alc = (char *) xmalloc (strlen (S_GET_NAME (line_label))
1558 + (input_line_pointer - name)
1560 sprintf (alc, "%s%s", name, S_GET_NAME (line_label));
1565 sym = symbol_find_or_make (name);
1566 *input_line_pointer = c;
1570 if (*input_line_pointer != ',')
1574 ++input_line_pointer;
1575 align = get_absolute_expression ();
1578 if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym))
1580 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym));
1581 ignore_rest_of_line ();
1582 mri_comment_end (stop, stopc);
1586 S_SET_EXTERNAL (sym);
1587 S_SET_SEGMENT (sym, bfd_com_section_ptr);
1588 mri_common_symbol = sym;
1592 S_SET_ALIGN (sym, align);
1595 if (line_label != NULL)
1598 exp.X_op = O_symbol;
1599 exp.X_add_symbol = sym;
1600 exp.X_add_number = 0;
1601 symbol_set_value_expression (line_label, &exp);
1602 symbol_set_frag (line_label, &zero_address_frag);
1603 S_SET_SEGMENT (line_label, expr_section);
1606 /* FIXME: We just ignore the small argument, which distinguishes
1607 COMMON and COMMON.S. I don't know what we can do about it. */
1609 /* Ignore the type and hptype. */
1610 if (*input_line_pointer == ',')
1611 input_line_pointer += 2;
1612 if (*input_line_pointer == ',')
1613 input_line_pointer += 2;
1615 demand_empty_rest_of_line ();
1617 mri_comment_end (stop, stopc);
1621 s_data (int ignore ATTRIBUTE_UNUSED)
1626 temp = get_absolute_expression ();
1627 if (flag_readonly_data_in_text)
1629 section = text_section;
1633 section = data_section;
1635 subseg_set (section, (subsegT) temp);
1640 demand_empty_rest_of_line ();
1643 /* Handle the .appfile pseudo-op. This is automatically generated by
1644 do_scrub_chars when a preprocessor # line comment is seen with a
1645 file name. This default definition may be overridden by the object
1646 or CPU specific pseudo-ops. This function is also the default
1647 definition for .file; the APPFILE argument is 1 for .appfile, 0 for
1651 s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED)
1655 listing_source_file (file);
1657 register_dependency (file);
1659 obj_app_file (file, appfile);
1664 s_app_file (int appfile)
1669 /* Some assemblers tolerate immediately following '"'. */
1670 if ((s = demand_copy_string (&length)) != 0)
1672 /* If this is a fake .appfile, a fake newline was inserted into
1673 the buffer. Passing -2 to new_logical_line tells it to
1676 = (!new_logical_line (s, appfile ? -2 : -1) && appfile);
1678 /* In MRI mode, the preprocessor may have inserted an extraneous
1681 && *input_line_pointer == '\''
1682 && is_end_of_line[(unsigned char) input_line_pointer[1]])
1683 ++input_line_pointer;
1685 demand_empty_rest_of_line ();
1687 s_app_file_string (s, appfile);
1691 /* Handle the .appline pseudo-op. This is automatically generated by
1692 do_scrub_chars when a preprocessor # line comment is seen. This
1693 default definition may be overridden by the object or CPU specific
1697 s_app_line (int ignore ATTRIBUTE_UNUSED)
1701 /* The given number is that of the next line. */
1702 l = get_absolute_expression () - 1;
1705 /* Some of the back ends can't deal with non-positive line numbers.
1706 Besides, it's silly. GCC however will generate a line number of
1707 zero when it is pre-processing builtins for assembler-with-cpp files:
1711 We do not want to barf on this, especially since such files are used
1712 in the GCC and GDB testsuites. So we check for negative line numbers
1713 rather than non-positive line numbers. */
1714 as_warn (_("line numbers must be positive; line number %d rejected"),
1718 new_logical_line ((char *) NULL, l);
1721 listing_source_line (l);
1724 demand_empty_rest_of_line ();
1727 /* Handle the .end pseudo-op. Actually, the real work is done in
1728 read_a_source_file. */
1731 s_end (int ignore ATTRIBUTE_UNUSED)
1735 /* The MRI assembler permits the start symbol to follow .end,
1736 but we don't support that. */
1738 if (!is_end_of_line[(unsigned char) *input_line_pointer]
1739 && *input_line_pointer != '*'
1740 && *input_line_pointer != '!')
1741 as_warn (_("start address not supported"));
1745 /* Handle the .err pseudo-op. */
1748 s_err (int ignore ATTRIBUTE_UNUSED)
1750 as_bad (_(".err encountered"));
1751 demand_empty_rest_of_line ();
1754 /* Handle the .error and .warning pseudo-ops. */
1760 /* The purpose for the conditional assignment is not to
1761 internationalize the directive itself, but that we need a
1762 self-contained message, one that can be passed like the
1763 demand_copy_C_string return value, and with no assumption on the
1764 location of the name of the directive within the message. */
1766 = (err ? _(".error directive invoked in source file")
1767 : _(".warning directive invoked in source file"));
1769 if (!is_it_end_of_statement ())
1771 if (*input_line_pointer != '\"')
1773 as_bad (_("%s argument must be a string"),
1774 err ? ".error" : ".warning");
1775 ignore_rest_of_line ();
1779 msg = demand_copy_C_string (&len);
1787 as_warn ("%s", msg);
1788 demand_empty_rest_of_line ();
1791 /* Handle the MRI fail pseudo-op. */
1794 s_fail (int ignore ATTRIBUTE_UNUSED)
1801 stop = mri_comment_field (&stopc);
1803 temp = get_absolute_expression ();
1805 as_warn (_(".fail %ld encountered"), (long) temp);
1807 as_bad (_(".fail %ld encountered"), (long) temp);
1809 demand_empty_rest_of_line ();
1812 mri_comment_end (stop, stopc);
1816 s_fill (int ignore ATTRIBUTE_UNUSED)
1818 expressionS rep_exp;
1820 register long fill = 0;
1823 #ifdef md_flush_pending_output
1824 md_flush_pending_output ();
1827 get_known_segmented_expression (&rep_exp);
1828 if (*input_line_pointer == ',')
1830 input_line_pointer++;
1831 size = get_absolute_expression ();
1832 if (*input_line_pointer == ',')
1834 input_line_pointer++;
1835 fill = get_absolute_expression ();
1839 /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
1840 #define BSD_FILL_SIZE_CROCK_8 (8)
1841 if (size > BSD_FILL_SIZE_CROCK_8)
1843 as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8);
1844 size = BSD_FILL_SIZE_CROCK_8;
1848 as_warn (_("size negative; .fill ignored"));
1851 else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0)
1853 if (rep_exp.X_add_number < 0)
1854 as_warn (_("repeat < 0; .fill ignored"));
1858 if (size && !need_pass_2)
1860 if (rep_exp.X_op == O_constant)
1862 p = frag_var (rs_fill, (int) size, (int) size,
1863 (relax_substateT) 0, (symbolS *) 0,
1864 (offsetT) rep_exp.X_add_number,
1869 /* We don't have a constant repeat count, so we can't use
1870 rs_fill. We can get the same results out of rs_space,
1871 but its argument is in bytes, so we must multiply the
1872 repeat count by size. */
1875 rep_sym = make_expr_symbol (&rep_exp);
1878 expressionS size_exp;
1879 size_exp.X_op = O_constant;
1880 size_exp.X_add_number = size;
1882 rep_exp.X_op = O_multiply;
1883 rep_exp.X_add_symbol = rep_sym;
1884 rep_exp.X_op_symbol = make_expr_symbol (&size_exp);
1885 rep_exp.X_add_number = 0;
1886 rep_sym = make_expr_symbol (&rep_exp);
1889 p = frag_var (rs_space, (int) size, (int) size,
1890 (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0);
1893 memset (p, 0, (unsigned int) size);
1895 /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
1896 flavoured AS. The following bizarre behaviour is to be
1897 compatible with above. I guess they tried to take up to 8
1898 bytes from a 4-byte expression and they forgot to sign
1900 #define BSD_FILL_SIZE_CROCK_4 (4)
1901 md_number_to_chars (p, (valueT) fill,
1902 (size > BSD_FILL_SIZE_CROCK_4
1903 ? BSD_FILL_SIZE_CROCK_4
1905 /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
1906 but emits no error message because it seems a legal thing to do.
1907 It is a degenerate case of .fill but could be emitted by a
1910 demand_empty_rest_of_line ();
1914 s_globl (int ignore ATTRIBUTE_UNUSED)
1923 stop = mri_comment_field (&stopc);
1927 name = input_line_pointer;
1928 c = get_symbol_end ();
1929 symbolP = symbol_find_or_make (name);
1930 S_SET_EXTERNAL (symbolP);
1932 *input_line_pointer = c;
1934 c = *input_line_pointer;
1937 input_line_pointer++;
1939 if (is_end_of_line[(unsigned char) *input_line_pointer])
1945 demand_empty_rest_of_line ();
1948 mri_comment_end (stop, stopc);
1951 /* Handle the MRI IRP and IRPC pseudo-ops. */
1962 as_where (&file, &line);
1965 eol = find_end_of_line (input_line_pointer, 0);
1966 sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer);
1967 input_line_pointer = eol;
1971 err = expand_irp (irpc, 0, &s, &out, get_line_sb);
1973 as_bad_where (file, line, "%s", err);
1977 input_scrub_include_sb (&out, input_line_pointer, 1);
1979 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
1982 /* Handle the .linkonce pseudo-op. This tells the assembler to mark
1983 the section to only be linked once. However, this is not supported
1984 by most object file formats. This takes an optional argument,
1985 which is what to do about duplicates. */
1988 s_linkonce (int ignore ATTRIBUTE_UNUSED)
1990 enum linkonce_type type;
1994 type = LINKONCE_DISCARD;
1996 if (!is_end_of_line[(unsigned char) *input_line_pointer])
2001 s = input_line_pointer;
2002 c = get_symbol_end ();
2003 if (strcasecmp (s, "discard") == 0)
2004 type = LINKONCE_DISCARD;
2005 else if (strcasecmp (s, "one_only") == 0)
2006 type = LINKONCE_ONE_ONLY;
2007 else if (strcasecmp (s, "same_size") == 0)
2008 type = LINKONCE_SAME_SIZE;
2009 else if (strcasecmp (s, "same_contents") == 0)
2010 type = LINKONCE_SAME_CONTENTS;
2012 as_warn (_("unrecognized .linkonce type `%s'"), s);
2014 *input_line_pointer = c;
2017 #ifdef obj_handle_link_once
2018 obj_handle_link_once (type);
2019 #else /* ! defined (obj_handle_link_once) */
2023 if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0)
2024 as_warn (_(".linkonce is not supported for this object file format"));
2026 flags = bfd_get_section_flags (stdoutput, now_seg);
2027 flags |= SEC_LINK_ONCE;
2032 case LINKONCE_DISCARD:
2033 flags |= SEC_LINK_DUPLICATES_DISCARD;
2035 case LINKONCE_ONE_ONLY:
2036 flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
2038 case LINKONCE_SAME_SIZE:
2039 flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
2041 case LINKONCE_SAME_CONTENTS:
2042 flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
2045 if (!bfd_set_section_flags (stdoutput, now_seg, flags))
2046 as_bad (_("bfd_set_section_flags: %s"),
2047 bfd_errmsg (bfd_get_error ()));
2049 #endif /* ! defined (obj_handle_link_once) */
2051 demand_empty_rest_of_line ();
2055 bss_alloc (symbolS *symbolP, addressT size, int align)
2058 segT current_seg = now_seg;
2059 subsegT current_subseg = now_subseg;
2060 segT bss_seg = bss_section;
2062 #if defined (TC_MIPS) || defined (TC_ALPHA)
2063 if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour
2064 || OUTPUT_FLAVOR == bfd_target_elf_flavour)
2066 /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */
2067 if (size <= bfd_get_gp_size (stdoutput))
2069 bss_seg = subseg_new (".sbss", 1);
2070 seg_info (bss_seg)->bss = 1;
2071 if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC))
2072 as_warn (_("error setting flags for \".sbss\": %s"),
2073 bfd_errmsg (bfd_get_error ()));
2077 subseg_set (bss_seg, 1);
2081 record_alignment (bss_seg, align);
2082 frag_align (align, 0, 0);
2085 /* Detach from old frag. */
2086 if (S_GET_SEGMENT (symbolP) == bss_seg)
2087 symbol_get_frag (symbolP)->fr_symbol = NULL;
2089 symbol_set_frag (symbolP, frag_now);
2090 pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL);
2094 S_SET_SIZE (symbolP, size);
2096 S_SET_SEGMENT (symbolP, bss_seg);
2099 /* The symbol may already have been created with a preceding
2100 ".globl" directive -- be careful not to step on storage class
2101 in that case. Otherwise, set it to static. */
2102 if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
2103 S_SET_STORAGE_CLASS (symbolP, C_STAT);
2104 #endif /* OBJ_COFF */
2106 subseg_set (current_seg, current_subseg);
2110 parse_align (int align_bytes)
2116 if (*input_line_pointer != ',')
2119 as_bad (_("expected alignment after size"));
2120 ignore_rest_of_line ();
2124 input_line_pointer++;
2127 align = get_absolute_expr (&exp);
2128 if (exp.X_op == O_absent)
2131 if (!exp.X_unsigned)
2133 as_warn (_("alignment negative; 0 assumed"));
2137 if (align_bytes && align != 0)
2139 /* convert to a power of 2 alignment */
2140 unsigned int alignp2 = 0;
2141 while ((align & 1) == 0)
2142 align >>= 1, ++alignp2;
2145 as_bad (_("alignment not a power of 2"));
2146 ignore_rest_of_line ();
2154 /* Called from s_comm_internal after symbol name and size have been
2155 parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only),
2156 1 if this was a ".bss" directive which has a 3rd argument
2157 (alignment as a power of 2), or 2 if this was a ".bss" directive
2158 with alignment in bytes. */
2161 s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size)
2167 align = parse_align (needs_align - 1);
2168 if (align == (addressT) -1)
2172 /* Assume some objects may require alignment on some systems. */
2173 TC_IMPLICIT_LCOMM_ALIGNMENT (size, align);
2175 bss_alloc (symbolP, size, align);
2180 s_lcomm (int needs_align)
2182 s_comm_internal (needs_align, s_lcomm_internal);
2186 s_lcomm_bytes (int needs_align)
2188 s_comm_internal (needs_align * 2, s_lcomm_internal);
2192 s_lsym (int ignore ATTRIBUTE_UNUSED)
2194 register char *name;
2198 register symbolS *symbolP;
2200 /* We permit ANY defined expression: BSD4.2 demands constants. */
2201 name = input_line_pointer;
2202 c = get_symbol_end ();
2203 p = input_line_pointer;
2208 as_bad (_("expected symbol name"));
2209 ignore_rest_of_line ();
2215 if (*input_line_pointer != ',')
2218 as_bad (_("expected comma after \"%s\""), name);
2220 ignore_rest_of_line ();
2224 input_line_pointer++;
2225 expression_and_evaluate (&exp);
2227 if (exp.X_op != O_constant
2228 && exp.X_op != O_register)
2230 as_bad (_("bad expression"));
2231 ignore_rest_of_line ();
2236 symbolP = symbol_find_or_make (name);
2238 if (S_GET_SEGMENT (symbolP) == undefined_section)
2240 /* The name might be an undefined .global symbol; be sure to
2241 keep the "external" bit. */
2242 S_SET_SEGMENT (symbolP,
2243 (exp.X_op == O_constant
2246 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
2250 as_bad (_("symbol `%s' is already defined"), name);
2254 demand_empty_rest_of_line ();
2257 /* Read a line into an sb. Returns the character that ended the line
2258 or zero if there are no more lines. */
2261 get_line_sb (sb *line)
2265 if (input_line_pointer[-1] == '\n')
2266 bump_line_counters ();
2268 if (input_line_pointer >= buffer_limit)
2270 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2271 if (buffer_limit == 0)
2275 eol = find_end_of_line (input_line_pointer, flag_m68k_mri);
2276 sb_add_buffer (line, input_line_pointer, eol - input_line_pointer);
2277 input_line_pointer = eol;
2279 /* Don't skip multiple end-of-line characters, because that breaks support
2280 for the IA-64 stop bit (;;) which looks like two consecutive end-of-line
2281 characters but isn't. Instead just skip one end of line character and
2282 return the character skipped so that the caller can re-insert it if
2284 return *input_line_pointer++;
2287 /* Define a macro. This is an interface to macro.c. */
2290 s_macro (int ignore ATTRIBUTE_UNUSED)
2298 as_where (&file, &line);
2301 eol = find_end_of_line (input_line_pointer, 0);
2302 sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer);
2303 input_line_pointer = eol;
2305 if (line_label != NULL)
2310 sb_add_string (&label, S_GET_NAME (line_label));
2311 err = define_macro (0, &s, &label, get_line_sb, file, line, &name);
2315 err = define_macro (0, &s, NULL, get_line_sb, file, line, &name);
2317 as_bad_where (file, line, err, name);
2320 if (line_label != NULL)
2322 S_SET_SEGMENT (line_label, absolute_section);
2323 S_SET_VALUE (line_label, 0);
2324 symbol_set_frag (line_label, &zero_address_frag);
2327 if (((NO_PSEUDO_DOT || flag_m68k_mri)
2328 && hash_find (po_hash, name) != NULL)
2331 && hash_find (po_hash, name + 1) != NULL))
2332 as_warn_where (file,
2334 _("attempt to redefine pseudo-op `%s' ignored"),
2341 /* Handle the .mexit pseudo-op, which immediately exits a macro
2345 s_mexit (int ignore ATTRIBUTE_UNUSED)
2347 cond_exit_macro (macro_nest);
2348 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2351 /* Switch in and out of MRI mode. */
2354 s_mri (int ignore ATTRIBUTE_UNUSED)
2358 on = get_absolute_expression ();
2359 old_flag = flag_mri;
2377 /* Operator precedence changes in m68k MRI mode, so we need to
2378 update the operator rankings. */
2379 expr_set_precedence ();
2381 #ifdef MRI_MODE_CHANGE
2383 MRI_MODE_CHANGE (on);
2386 demand_empty_rest_of_line ();
2389 /* Handle changing the location counter. */
2392 do_org (segT segment, expressionS *exp, int fill)
2394 if (segment != now_seg && segment != absolute_section)
2395 as_bad (_("invalid segment \"%s\""), segment_name (segment));
2397 if (now_seg == absolute_section)
2400 as_warn (_("ignoring fill value in absolute section"));
2401 if (exp->X_op != O_constant)
2403 as_bad (_("only constant offsets supported in absolute section"));
2404 exp->X_add_number = 0;
2406 abs_section_offset = exp->X_add_number;
2411 symbolS *sym = exp->X_add_symbol;
2412 offsetT off = exp->X_add_number * OCTETS_PER_BYTE;
2414 if (exp->X_op != O_constant && exp->X_op != O_symbol)
2416 /* Handle complex expressions. */
2417 sym = make_expr_symbol (exp);
2421 p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0);
2427 s_org (int ignore ATTRIBUTE_UNUSED)
2429 register segT segment;
2431 register long temp_fill;
2433 #ifdef md_flush_pending_output
2434 md_flush_pending_output ();
2437 /* The m68k MRI assembler has a different meaning for .org. It
2438 means to create an absolute section at a given address. We can't
2439 support that--use a linker script instead. */
2442 as_bad (_("MRI style ORG pseudo-op not supported"));
2443 ignore_rest_of_line ();
2447 /* Don't believe the documentation of BSD 4.2 AS. There is no such
2448 thing as a sub-segment-relative origin. Any absolute origin is
2449 given a warning, then assumed to be segment-relative. Any
2450 segmented origin expression ("foo+42") had better be in the right
2451 segment or the .org is ignored.
2453 BSD 4.2 AS warns if you try to .org backwards. We cannot because
2454 we never know sub-segment sizes when we are reading code. BSD
2455 will crash trying to emit negative numbers of filler bytes in
2456 certain .orgs. We don't crash, but see as-write for that code.
2458 Don't make frag if need_pass_2==1. */
2459 segment = get_known_segmented_expression (&exp);
2460 if (*input_line_pointer == ',')
2462 input_line_pointer++;
2463 temp_fill = get_absolute_expression ();
2469 do_org (segment, &exp, temp_fill);
2471 demand_empty_rest_of_line ();
2474 /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be
2475 called by the obj-format routine which handles section changing
2476 when in MRI mode. It will create a new section, and return it. It
2477 will set *TYPE to the section type: one of 'C' (code), 'D' (data),
2478 'M' (mixed), or 'R' (romable). The flags will be set in the section. */
2481 s_mri_sect (char *type ATTRIBUTE_UNUSED)
2491 name = input_line_pointer;
2492 if (!ISDIGIT (*name))
2493 c = get_symbol_end ();
2498 ++input_line_pointer;
2500 while (ISDIGIT (*input_line_pointer));
2502 c = *input_line_pointer;
2503 *input_line_pointer = '\0';
2506 name = xstrdup (name);
2508 *input_line_pointer = c;
2510 seg = subseg_new (name, 0);
2512 if (*input_line_pointer == ',')
2516 ++input_line_pointer;
2517 align = get_absolute_expression ();
2518 record_alignment (seg, align);
2522 if (*input_line_pointer == ',')
2524 c = *++input_line_pointer;
2526 if (c == 'C' || c == 'D' || c == 'M' || c == 'R')
2529 as_bad (_("unrecognized section type"));
2530 ++input_line_pointer;
2535 flags = SEC_NO_FLAGS;
2537 flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE;
2538 else if (*type == 'D' || *type == 'M')
2539 flags = SEC_ALLOC | SEC_LOAD | SEC_DATA;
2540 else if (*type == 'R')
2541 flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM;
2542 if (flags != SEC_NO_FLAGS)
2544 if (!bfd_set_section_flags (stdoutput, seg, flags))
2545 as_warn (_("error setting flags for \"%s\": %s"),
2546 bfd_section_name (stdoutput, seg),
2547 bfd_errmsg (bfd_get_error ()));
2552 /* Ignore the HP type. */
2553 if (*input_line_pointer == ',')
2554 input_line_pointer += 2;
2556 demand_empty_rest_of_line ();
2558 #else /* ! TC_M68K */
2567 name = input_line_pointer;
2568 c = get_symbol_end ();
2570 name = xstrdup (name);
2572 *input_line_pointer = c;
2574 seg = subseg_new (name, 0);
2576 if (*input_line_pointer != ',')
2582 ++input_line_pointer;
2584 sectype = input_line_pointer;
2585 c = get_symbol_end ();
2586 if (*sectype == '\0')
2588 else if (strcasecmp (sectype, "text") == 0)
2590 else if (strcasecmp (sectype, "data") == 0)
2592 else if (strcasecmp (sectype, "romdata") == 0)
2595 as_warn (_("unrecognized section type `%s'"), sectype);
2596 *input_line_pointer = c;
2599 if (*input_line_pointer == ',')
2603 ++input_line_pointer;
2605 seccmd = input_line_pointer;
2606 c = get_symbol_end ();
2607 if (strcasecmp (seccmd, "absolute") == 0)
2609 as_bad (_("absolute sections are not supported"));
2610 *input_line_pointer = c;
2611 ignore_rest_of_line ();
2614 else if (strcasecmp (seccmd, "align") == 0)
2618 *input_line_pointer = c;
2619 align = get_absolute_expression ();
2620 record_alignment (seg, align);
2624 as_warn (_("unrecognized section command `%s'"), seccmd);
2625 *input_line_pointer = c;
2629 demand_empty_rest_of_line ();
2631 #else /* ! TC_I960 */
2632 /* The MRI assembler seems to use different forms of .sect for
2633 different targets. */
2634 as_bad ("MRI mode not supported for this target");
2635 ignore_rest_of_line ();
2636 #endif /* ! TC_I960 */
2637 #endif /* ! TC_M68K */
2640 /* Handle the .print pseudo-op. */
2643 s_print (int ignore ATTRIBUTE_UNUSED)
2648 s = demand_copy_C_string (&len);
2651 demand_empty_rest_of_line ();
2654 /* Handle the .purgem pseudo-op. */
2657 s_purgem (int ignore ATTRIBUTE_UNUSED)
2659 if (is_it_end_of_statement ())
2661 demand_empty_rest_of_line ();
2671 name = input_line_pointer;
2672 c = get_symbol_end ();
2673 delete_macro (name);
2674 *input_line_pointer = c;
2677 while (*input_line_pointer++ == ',');
2679 --input_line_pointer;
2680 demand_empty_rest_of_line ();
2683 /* Handle the .endm/.endr pseudo-ops. */
2686 s_bad_end (int endr)
2688 as_warn (_(".end%c encountered without preceeding %s"),
2690 endr ? ".rept, .irp, or .irpc" : ".macro");
2691 demand_empty_rest_of_line ();
2694 /* Handle the .rept pseudo-op. */
2697 s_rept (int ignore ATTRIBUTE_UNUSED)
2701 count = get_absolute_expression ();
2703 do_repeat (count, "REPT", "ENDR");
2706 /* This function provides a generic repeat block implementation. It allows
2707 different directives to be used as the start/end keys. */
2710 do_repeat (int count, const char *start, const char *end)
2716 if (!buffer_and_nest (start, end, &one, get_line_sb))
2718 as_bad (_("%s without %s"), start, end);
2724 sb_add_sb (&many, &one);
2728 input_scrub_include_sb (&many, input_line_pointer, 1);
2730 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2733 /* Skip to end of current repeat loop; EXTRA indicates how many additional
2734 input buffers to skip. Assumes that conditionals preceding the loop end
2735 are properly nested.
2737 This function makes it easier to implement a premature "break" out of the
2738 loop. The EXTRA arg accounts for other buffers we might have inserted,
2739 such as line substitutions. */
2742 end_repeat (int extra)
2744 cond_exit_macro (macro_nest);
2745 while (extra-- >= 0)
2746 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2750 assign_symbol (char *name, int mode)
2754 if (name[0] == '.' && name[1] == '\0')
2756 /* Turn '. = mumble' into a .org mumble. */
2760 segment = get_known_segmented_expression (&exp);
2763 do_org (segment, &exp, 0);
2768 if ((symbolP = symbol_find (name)) == NULL
2769 && (symbolP = md_undefined_symbol (name)) == NULL)
2771 symbolP = symbol_find_or_make (name);
2773 /* When doing symbol listings, play games with dummy fragments living
2774 outside the normal fragment chain to record the file and line info
2776 if (listing & LISTING_SYMBOLS)
2778 extern struct list_info_struct *listing_tail;
2779 fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS));
2780 dummy_frag->line = listing_tail;
2781 dummy_frag->fr_symbol = symbolP;
2782 symbol_set_frag (symbolP, dummy_frag);
2786 /* "set" symbols are local unless otherwise specified. */
2787 SF_SET_LOCAL (symbolP);
2791 if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
2793 /* Permit register names to be redefined. */
2794 if ((mode != 0 || !S_IS_VOLATILE (symbolP))
2795 && S_GET_SEGMENT (symbolP) != reg_section)
2797 as_bad (_("symbol `%s' is already defined"), name);
2798 symbolP = symbol_clone (symbolP, 0);
2800 /* If the symbol is volatile, copy the symbol and replace the
2801 original with the copy, so that previous uses of the symbol will
2802 retain the value of the symbol at the point of use. */
2803 else if (S_IS_VOLATILE (symbolP)
2804 /* This could be avoided when the symbol wasn't used so far, but
2805 the comment in struc-symbol.h says this flag isn't reliable. */
2806 && (1 || symbol_used_p (symbolP)))
2807 symbolP = symbol_clone (symbolP, 1);
2811 S_SET_VOLATILE (symbolP);
2813 S_SET_FORWARD_REF (symbolP);
2815 pseudo_set (symbolP);
2818 /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1,
2819 then this is .equiv, and it is an error if the symbol is already
2820 defined. If EQUIV is -1, the symbol additionally is a forward
2830 /* Especial apologies for the random logic:
2831 this just grew, and could be parsed much more simply!
2833 name = input_line_pointer;
2834 delim = get_symbol_end ();
2835 end_name = input_line_pointer;
2838 if (name == end_name)
2840 as_bad (_("expected symbol name"));
2841 ignore_rest_of_line ();
2847 if (*input_line_pointer != ',')
2850 as_bad (_("expected comma after \"%s\""), name);
2852 ignore_rest_of_line ();
2856 input_line_pointer++;
2859 assign_symbol (name, equiv);
2862 demand_empty_rest_of_line ();
2875 #ifdef md_flush_pending_output
2876 md_flush_pending_output ();
2880 stop = mri_comment_field (&stopc);
2882 /* In m68k MRI mode, we need to align to a word boundary, unless
2884 if (flag_m68k_mri && mult > 1)
2886 if (now_seg == absolute_section)
2888 abs_section_offset += abs_section_offset & 1;
2889 if (line_label != NULL)
2890 S_SET_VALUE (line_label, abs_section_offset);
2892 else if (mri_common_symbol != NULL)
2896 val = S_GET_VALUE (mri_common_symbol);
2899 S_SET_VALUE (mri_common_symbol, val + 1);
2900 if (line_label != NULL)
2902 expressionS *symexp;
2904 symexp = symbol_get_value_expression (line_label);
2905 know (symexp->X_op == O_symbol);
2906 know (symexp->X_add_symbol == mri_common_symbol);
2907 symexp->X_add_number += 1;
2913 do_align (1, (char *) NULL, 0, 0);
2914 if (line_label != NULL)
2916 symbol_set_frag (line_label, frag_now);
2917 S_SET_VALUE (line_label, frag_now_fix ());
2927 if (*input_line_pointer == ',')
2929 ++input_line_pointer;
2934 val.X_op = O_constant;
2935 val.X_add_number = 0;
2938 if (val.X_op != O_constant
2939 || val.X_add_number < - 0x80
2940 || val.X_add_number > 0xff
2941 || (mult != 0 && mult != 1 && val.X_add_number != 0))
2943 resolve_expression (&exp);
2944 if (exp.X_op != O_constant)
2945 as_bad (_("unsupported variable size or fill value"));
2952 bytes = mult * exp.X_add_number;
2953 for (i = 0; i < exp.X_add_number; i++)
2954 emit_expr (&val, mult);
2959 if (now_seg == absolute_section || mri_common_symbol != NULL)
2960 resolve_expression (&exp);
2962 if (exp.X_op == O_constant)
2966 repeat = exp.X_add_number;
2973 as_warn (_(".space repeat count is zero, ignored"));
2974 else if (repeat < 0)
2975 as_warn (_(".space repeat count is negative, ignored"));
2979 /* If we are in the absolute section, just bump the offset. */
2980 if (now_seg == absolute_section)
2982 abs_section_offset += repeat;
2986 /* If we are secretly in an MRI common section, then
2987 creating space just increases the size of the common
2989 if (mri_common_symbol != NULL)
2991 S_SET_VALUE (mri_common_symbol,
2992 S_GET_VALUE (mri_common_symbol) + repeat);
2997 p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0,
2998 (offsetT) repeat, (char *) 0);
3002 if (now_seg == absolute_section)
3004 as_bad (_("space allocation too complex in absolute section"));
3005 subseg_set (text_section, 0);
3008 if (mri_common_symbol != NULL)
3010 as_bad (_("space allocation too complex in common section"));
3011 mri_common_symbol = NULL;
3015 p = frag_var (rs_space, 1, 1, (relax_substateT) 0,
3016 make_expr_symbol (&exp), (offsetT) 0, (char *) 0);
3020 *p = val.X_add_number;
3025 /* In MRI mode, after an odd number of bytes, we must align to an
3026 even word boundary, unless the next instruction is a dc.b, ds.b
3028 if (flag_mri && (bytes & 1) != 0)
3029 mri_pending_align = 1;
3031 demand_empty_rest_of_line ();
3034 mri_comment_end (stop, stopc);
3037 /* This is like s_space, but the value is a floating point number with
3038 the given precision. This is for the MRI dcb.s pseudo-op and
3042 s_float_space (int float_type)
3046 char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
3051 stop = mri_comment_field (&stopc);
3053 count = get_absolute_expression ();
3056 if (*input_line_pointer != ',')
3058 as_bad (_("missing value"));
3059 ignore_rest_of_line ();
3061 mri_comment_end (stop, stopc);
3065 ++input_line_pointer;
3069 /* Skip any 0{letter} that may be present. Don't even check if the
3070 * letter is legal. */
3071 if (input_line_pointer[0] == '0'
3072 && ISALPHA (input_line_pointer[1]))
3073 input_line_pointer += 2;
3075 /* Accept :xxxx, where the x's are hex digits, for a floating point
3076 with the exact digits specified. */
3077 if (input_line_pointer[0] == ':')
3079 flen = hex_float (float_type, temp);
3082 ignore_rest_of_line ();
3084 mri_comment_end (stop, stopc);
3092 err = md_atof (float_type, temp, &flen);
3093 know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
3097 as_bad (_("bad floating literal: %s"), err);
3098 ignore_rest_of_line ();
3100 mri_comment_end (stop, stopc);
3105 while (--count >= 0)
3109 p = frag_more (flen);
3110 memcpy (p, temp, (unsigned int) flen);
3113 demand_empty_rest_of_line ();
3116 mri_comment_end (stop, stopc);
3119 /* Handle the .struct pseudo-op, as found in MIPS assemblers. */
3122 s_struct (int ignore ATTRIBUTE_UNUSED)
3128 stop = mri_comment_field (&stopc);
3129 abs_section_offset = get_absolute_expression ();
3130 subseg_set (absolute_section, 0);
3131 demand_empty_rest_of_line ();
3133 mri_comment_end (stop, stopc);
3137 s_text (int ignore ATTRIBUTE_UNUSED)
3141 temp = get_absolute_expression ();
3142 subseg_set (text_section, (subsegT) temp);
3143 demand_empty_rest_of_line ();
3145 const_flag &= ~IN_DEFAULT_SECTION;
3149 /* .weakref x, y sets x as an alias to y that, as long as y is not
3150 referenced directly, will cause y to become a weak symbol. */
3152 s_weakref (int ignore ATTRIBUTE_UNUSED)
3161 name = input_line_pointer;
3162 delim = get_symbol_end ();
3163 end_name = input_line_pointer;
3165 if (name == end_name)
3167 as_bad (_("expected symbol name"));
3169 ignore_rest_of_line ();
3173 symbolP = symbol_find_or_make (name);
3175 if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
3177 as_bad (_("symbol `%s' is already defined"), name);
3179 ignore_rest_of_line ();
3187 if (*input_line_pointer != ',')
3190 as_bad (_("expected comma after \"%s\""), name);
3192 ignore_rest_of_line ();
3196 input_line_pointer++;
3200 name = input_line_pointer;
3201 delim = get_symbol_end ();
3202 end_name = input_line_pointer;
3204 if (name == end_name)
3206 as_bad (_("expected symbol name"));
3207 ignore_rest_of_line ();
3211 if ((symbolP2 = symbol_find_noref (name, 1)) == NULL
3212 && (symbolP2 = md_undefined_symbol (name)) == NULL)
3214 symbolP2 = symbol_find_or_make (name);
3215 S_SET_WEAKREFD (symbolP2);
3219 symbolS *symp = symbolP2;
3221 while (S_IS_WEAKREFR (symp) && symp != symbolP)
3223 expressionS *expP = symbol_get_value_expression (symp);
3225 assert (expP->X_op == O_symbol
3226 && expP->X_add_number == 0);
3227 symp = expP->X_add_symbol;
3229 if (symp == symbolP)
3233 loop = concat (S_GET_NAME (symbolP),
3234 " => ", S_GET_NAME (symbolP2), NULL);
3237 while (symp != symbolP)
3239 char *old_loop = loop;
3240 symp = symbol_get_value_expression (symp)->X_add_symbol;
3241 loop = concat (loop, " => ", S_GET_NAME (symp), NULL);
3245 as_bad (_("%s: would close weakref loop: %s"),
3246 S_GET_NAME (symbolP), loop);
3251 ignore_rest_of_line ();
3255 /* Short-circuiting instead of just checking here might speed
3256 things up a tiny little bit, but loop error messages would
3257 miss intermediate links. */
3258 /* symbolP2 = symp; */
3263 memset (&exp, 0, sizeof (exp));
3264 exp.X_op = O_symbol;
3265 exp.X_add_symbol = symbolP2;
3267 S_SET_SEGMENT (symbolP, undefined_section);
3268 symbol_set_value_expression (symbolP, &exp);
3269 symbol_set_frag (symbolP, &zero_address_frag);
3270 S_SET_WEAKREFR (symbolP);
3272 demand_empty_rest_of_line ();
3276 /* Verify that we are at the end of a line. If not, issue an error and
3280 demand_empty_rest_of_line (void)
3283 if (is_end_of_line[(unsigned char) *input_line_pointer])
3284 input_line_pointer++;
3287 if (ISPRINT (*input_line_pointer))
3288 as_bad (_("junk at end of line, first unrecognized character is `%c'"),
3289 *input_line_pointer);
3291 as_bad (_("junk at end of line, first unrecognized character valued 0x%x"),
3292 *input_line_pointer);
3293 ignore_rest_of_line ();
3296 /* Return pointing just after end-of-line. */
3297 know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
3300 /* Silently advance to the end of line. Use this after already having
3301 issued an error about something bad. */
3304 ignore_rest_of_line (void)
3306 while (input_line_pointer < buffer_limit
3307 && !is_end_of_line[(unsigned char) *input_line_pointer])
3308 input_line_pointer++;
3310 input_line_pointer++;
3312 /* Return pointing just after end-of-line. */
3313 know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
3316 /* Sets frag for given symbol to zero_address_frag, except when the
3317 symbol frag is already set to a dummy listing frag. */
3320 set_zero_frag (symbolS *symbolP)
3322 if (symbol_get_frag (symbolP)->fr_type != rs_dummy)
3323 symbol_set_frag (symbolP, &zero_address_frag);
3326 /* In: Pointer to a symbol.
3327 Input_line_pointer->expression.
3329 Out: Input_line_pointer->just after any whitespace after expression.
3330 Tried to set symbol to value of expression.
3331 Will change symbols type, value, and frag; */
3334 pseudo_set (symbolS *symbolP)
3339 know (symbolP); /* NULL pointer is logic error. */
3341 if (!S_IS_FORWARD_REF (symbolP))
3342 (void) expression (&exp);
3344 (void) deferred_expression (&exp);
3346 if (exp.X_op == O_illegal)
3347 as_bad (_("illegal expression"));
3348 else if (exp.X_op == O_absent)
3349 as_bad (_("missing expression"));
3350 else if (exp.X_op == O_big)
3352 if (exp.X_add_number > 0)
3353 as_bad (_("bignum invalid"));
3355 as_bad (_("floating point number invalid"));
3357 else if (exp.X_op == O_subtract
3358 && !S_IS_FORWARD_REF (symbolP)
3359 && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
3360 && (symbol_get_frag (exp.X_add_symbol)
3361 == symbol_get_frag (exp.X_op_symbol)))
3363 exp.X_op = O_constant;
3364 exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)
3365 - S_GET_VALUE (exp.X_op_symbol));
3368 if (symbol_section_p (symbolP))
3370 as_bad ("attempt to set value of section symbol");
3379 exp.X_add_number = 0;
3382 S_SET_SEGMENT (symbolP, absolute_section);
3383 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
3384 set_zero_frag (symbolP);
3388 S_SET_SEGMENT (symbolP, reg_section);
3389 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
3390 set_zero_frag (symbolP);
3394 seg = S_GET_SEGMENT (exp.X_add_symbol);
3395 /* For x=undef+const, create an expression symbol.
3396 For x=x+const, just update x except when x is an undefined symbol
3397 For x=defined+const, evaluate x. */
3398 if (symbolP == exp.X_add_symbol
3399 && (seg != undefined_section
3400 || !symbol_constant_p (symbolP)))
3402 *symbol_X_add_number (symbolP) += exp.X_add_number;
3405 else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section)
3407 symbolS *s = exp.X_add_symbol;
3409 if (S_IS_COMMON (s))
3410 as_bad (_("`%s' can't be equated to common symbol '%s'"),
3411 S_GET_NAME (symbolP), S_GET_NAME (s));
3413 S_SET_SEGMENT (symbolP, seg);
3414 S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s));
3415 symbol_set_frag (symbolP, symbol_get_frag (s));
3416 copy_symbol_attributes (symbolP, s);
3419 S_SET_SEGMENT (symbolP, undefined_section);
3420 symbol_set_value_expression (symbolP, &exp);
3421 set_zero_frag (symbolP);
3425 /* The value is some complex expression. */
3426 S_SET_SEGMENT (symbolP, expr_section);
3427 symbol_set_value_expression (symbolP, &exp);
3428 set_zero_frag (symbolP);
3435 CONStruct more frag of .bytes, or .words etc.
3436 Should need_pass_2 be 1 then emit no frag(s).
3437 This understands EXPRESSIONS.
3441 This has a split personality. We use expression() to read the
3442 value. We can detect if the value won't fit in a byte or word.
3443 But we can't detect if expression() discarded significant digits
3444 in the case of a long. Not worth the crocks required to fix it. */
3446 /* Select a parser for cons expressions. */
3448 /* Some targets need to parse the expression in various fancy ways.
3449 You can define TC_PARSE_CONS_EXPRESSION to do whatever you like
3450 (for example, the HPPA does this). Otherwise, you can define
3451 BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or
3452 REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these
3453 are defined, which is the normal case, then only simple expressions
3458 parse_mri_cons (expressionS *exp, unsigned int nbytes);
3461 #ifndef TC_PARSE_CONS_EXPRESSION
3462 #ifdef BITFIELD_CONS_EXPRESSIONS
3463 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)
3465 parse_bitfield_cons (expressionS *exp, unsigned int nbytes);
3467 #ifdef REPEAT_CONS_EXPRESSIONS
3468 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)
3470 parse_repeat_cons (expressionS *exp, unsigned int nbytes);
3473 /* If we haven't gotten one yet, just call expression. */
3474 #ifndef TC_PARSE_CONS_EXPRESSION
3475 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)
3480 do_parse_cons_expression (expressionS *exp,
3481 int nbytes ATTRIBUTE_UNUSED)
3483 TC_PARSE_CONS_EXPRESSION (exp, nbytes);
3487 /* Worker to do .byte etc statements.
3488 Clobbers input_line_pointer and checks end-of-line. */
3491 cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */
3499 #ifdef md_flush_pending_output
3500 md_flush_pending_output ();
3504 stop = mri_comment_field (&stopc);
3506 if (is_it_end_of_statement ())
3508 demand_empty_rest_of_line ();
3510 mri_comment_end (stop, stopc);
3514 #ifdef TC_ADDRESS_BYTES
3516 nbytes = TC_ADDRESS_BYTES ();
3519 #ifdef md_cons_align
3520 md_cons_align (nbytes);
3528 parse_mri_cons (&exp, (unsigned int) nbytes);
3531 TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);
3535 if (exp.X_op == O_symbol)
3536 exp.X_op = O_symbol_rva;
3538 as_fatal (_("rva without symbol"));
3540 emit_expr (&exp, (unsigned int) nbytes);
3543 while (*input_line_pointer++ == ',');
3545 /* In MRI mode, after an odd number of bytes, we must align to an
3546 even word boundary, unless the next instruction is a dc.b, ds.b
3548 if (flag_mri && nbytes == 1 && (c & 1) != 0)
3549 mri_pending_align = 1;
3551 input_line_pointer--; /* Put terminator back into stream. */
3553 demand_empty_rest_of_line ();
3556 mri_comment_end (stop, stopc);
3562 cons_worker (size, 0);
3568 cons_worker (size, 1);
3571 /* Put the contents of expression EXP into the object file using
3572 NBYTES bytes. If need_pass_2 is 1, this does nothing. */
3575 emit_expr (expressionS *exp, unsigned int nbytes)
3579 valueT extra_digit = 0;
3581 /* Don't do anything if we are going to make another pass. */
3585 dot_value = frag_now_fix ();
3589 /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will
3590 appear as a four byte positive constant in the .line section,
3591 followed by a 2 byte 0xffff. Look for that case here. */
3593 static int dwarf_line = -1;
3595 if (strcmp (segment_name (now_seg), ".line") != 0)
3597 else if (dwarf_line >= 0
3599 && exp->X_op == O_constant
3600 && (exp->X_add_number == -1 || exp->X_add_number == 0xffff))
3601 listing_source_line ((unsigned int) dwarf_line);
3602 else if (nbytes == 4
3603 && exp->X_op == O_constant
3604 && exp->X_add_number >= 0)
3605 dwarf_line = exp->X_add_number;
3610 /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will
3611 appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte
3612 AT_sibling (0x12) followed by a four byte address of the sibling
3613 followed by a 2 byte AT_name (0x38) followed by the name of the
3614 file. We look for that case here. */
3616 static int dwarf_file = 0;
3618 if (strcmp (segment_name (now_seg), ".debug") != 0)
3620 else if (dwarf_file == 0
3622 && exp->X_op == O_constant
3623 && exp->X_add_number == 0x11)
3625 else if (dwarf_file == 1
3627 && exp->X_op == O_constant
3628 && exp->X_add_number == 0x12)
3630 else if (dwarf_file == 2
3633 else if (dwarf_file == 3
3635 && exp->X_op == O_constant
3636 && exp->X_add_number == 0x38)
3641 /* The variable dwarf_file_string tells stringer that the string
3642 may be the name of the source file. */
3643 if (dwarf_file == 4)
3644 dwarf_file_string = 1;
3646 dwarf_file_string = 0;
3651 if (check_eh_frame (exp, &nbytes))
3656 /* Allow `.word 0' in the absolute section. */
3657 if (now_seg == absolute_section)
3659 if (op != O_constant || exp->X_add_number != 0)
3660 as_bad (_("attempt to store value in absolute section"));
3661 abs_section_offset += nbytes;
3665 /* Handle a negative bignum. */
3667 && exp->X_add_number == 0
3668 && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big
3669 && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0)
3672 unsigned long carry;
3674 exp = symbol_get_value_expression (exp->X_add_symbol);
3676 /* Negate the bignum: one's complement each digit and add 1. */
3678 for (i = 0; i < exp->X_add_number; i++)
3682 next = (((~(generic_bignum[i] & LITTLENUM_MASK))
3685 generic_bignum[i] = next & LITTLENUM_MASK;
3686 carry = next >> LITTLENUM_NUMBER_OF_BITS;
3689 /* We can ignore any carry out, because it will be handled by
3690 extra_digit if it is needed. */
3692 extra_digit = (valueT) -1;
3696 if (op == O_absent || op == O_illegal)
3698 as_warn (_("zero assumed for missing expression"));
3699 exp->X_add_number = 0;
3702 else if (op == O_big && exp->X_add_number <= 0)
3704 as_bad (_("floating point number invalid"));
3705 exp->X_add_number = 0;
3708 else if (op == O_register)
3710 as_warn (_("register value used as expression"));
3714 p = frag_more ((int) nbytes);
3716 #ifndef WORKING_DOT_WORD
3717 /* If we have the difference of two symbols in a word, save it on
3718 the broken_words list. See the code in write.c. */
3719 if (op == O_subtract && nbytes == 2)
3721 struct broken_word *x;
3723 x = (struct broken_word *) xmalloc (sizeof (struct broken_word));
3724 x->next_broken_word = broken_words;
3727 x->subseg = now_subseg;
3729 x->word_goes_here = p;
3731 x->add = exp->X_add_symbol;
3732 x->sub = exp->X_op_symbol;
3733 x->addnum = exp->X_add_number;
3741 /* If we have an integer, but the number of bytes is too large to
3742 pass to md_number_to_chars, handle it as a bignum. */
3743 if (op == O_constant && nbytes > sizeof (valueT))
3745 extra_digit = exp->X_unsigned ? 0 : -1;
3746 convert_to_bignum (exp);
3750 if (op == O_constant)
3752 register valueT get;
3753 register valueT use;
3754 register valueT mask;
3756 register valueT unmask;
3758 /* JF << of >= number of bits in the object is undefined. In
3759 particular SPARC (Sun 4) has problems. */
3760 if (nbytes >= sizeof (valueT))
3763 if (nbytes > sizeof (valueT))
3766 hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
3770 /* Don't store these bits. */
3771 mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes);
3772 hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
3775 unmask = ~mask; /* Do store these bits. */
3778 "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
3779 mask = ~(unmask >> 1); /* Includes sign bit now. */
3782 get = exp->X_add_number;
3784 if ((get & mask) != 0
3785 && ((get & mask) != mask
3786 || (get & hibit) == 0))
3787 { /* Leading bits contain both 0s & 1s. */
3788 as_warn (_("value 0x%lx truncated to 0x%lx"),
3789 (unsigned long) get, (unsigned long) use);
3791 /* Put bytes in right order. */
3792 md_number_to_chars (p, use, (int) nbytes);
3794 else if (op == O_big)
3797 LITTLENUM_TYPE *nums;
3799 know (nbytes % CHARS_PER_LITTLENUM == 0);
3801 size = exp->X_add_number * CHARS_PER_LITTLENUM;
3804 as_warn (_("bignum truncated to %d bytes"), nbytes);
3808 if (target_big_endian)
3810 while (nbytes > size)
3812 md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
3813 nbytes -= CHARS_PER_LITTLENUM;
3814 p += CHARS_PER_LITTLENUM;
3817 nums = generic_bignum + size / CHARS_PER_LITTLENUM;
3818 while (size >= CHARS_PER_LITTLENUM)
3821 md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
3822 size -= CHARS_PER_LITTLENUM;
3823 p += CHARS_PER_LITTLENUM;
3828 nums = generic_bignum;
3829 while (size >= CHARS_PER_LITTLENUM)
3831 md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
3833 size -= CHARS_PER_LITTLENUM;
3834 p += CHARS_PER_LITTLENUM;
3835 nbytes -= CHARS_PER_LITTLENUM;
3838 while (nbytes >= CHARS_PER_LITTLENUM)
3840 md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
3841 nbytes -= CHARS_PER_LITTLENUM;
3842 p += CHARS_PER_LITTLENUM;
3848 memset (p, 0, nbytes);
3850 /* Now we need to generate a fixS to record the symbol value. */
3852 #ifdef TC_CONS_FIX_NEW
3853 TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
3856 bfd_reloc_code_real_type r;
3873 as_bad (_("unsupported BFD relocation size %u"), nbytes);
3877 fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp,
3884 #ifdef BITFIELD_CONS_EXPRESSIONS
3886 /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as
3887 w:x,y:z, where w and y are bitwidths and x and y are values. They
3888 then pack them all together. We do a little better in that we allow
3889 them in words, longs, etc. and we'll pack them in target byte order
3892 The rules are: pack least significant bit first, if a field doesn't
3893 entirely fit, put it in the next unit. Overflowing the bitfield is
3894 explicitly *not* even a warning. The bitwidth should be considered
3897 To use this function the tc-XXX.h file should define
3898 BITFIELD_CONS_EXPRESSIONS. */
3901 parse_bitfield_cons (exp, nbytes)
3903 unsigned int nbytes;
3905 unsigned int bits_available = BITS_PER_CHAR * nbytes;
3906 char *hold = input_line_pointer;
3908 (void) expression (exp);
3910 if (*input_line_pointer == ':')
3917 unsigned long width;
3919 if (*input_line_pointer != ':')
3921 input_line_pointer = hold;
3923 } /* Next piece is not a bitfield. */
3925 /* In the general case, we can't allow
3926 full expressions with symbol
3927 differences and such. The relocation
3928 entries for symbols not defined in this
3929 assembly would require arbitrary field
3930 widths, positions, and masks which most
3931 of our current object formats don't
3934 In the specific case where a symbol
3935 *is* defined in this assembly, we
3936 *could* build fixups and track it, but
3937 this could lead to confusion for the
3938 backends. I'm lazy. I'll take any
3939 SEG_ABSOLUTE. I think that means that
3940 you can use a previous .set or
3941 .equ type symbol. xoxorich. */
3943 if (exp->X_op == O_absent)
3945 as_warn (_("using a bit field width of zero"));
3946 exp->X_add_number = 0;
3947 exp->X_op = O_constant;
3948 } /* Implied zero width bitfield. */
3950 if (exp->X_op != O_constant)
3952 *input_line_pointer = '\0';
3953 as_bad (_("field width \"%s\" too complex for a bitfield"), hold);
3954 *input_line_pointer = ':';
3955 demand_empty_rest_of_line ();
3957 } /* Too complex. */
3959 if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes))
3961 as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"),
3962 width, nbytes, (BITS_PER_CHAR * nbytes));
3963 width = BITS_PER_CHAR * nbytes;
3966 if (width > bits_available)
3968 /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */
3969 input_line_pointer = hold;
3970 exp->X_add_number = value;
3975 hold = ++input_line_pointer;
3977 (void) expression (exp);
3978 if (exp->X_op != O_constant)
3980 char cache = *input_line_pointer;
3982 *input_line_pointer = '\0';
3983 as_bad (_("field value \"%s\" too complex for a bitfield"), hold);
3984 *input_line_pointer = cache;
3985 demand_empty_rest_of_line ();
3987 } /* Too complex. */
3989 value |= ((~(-1 << width) & exp->X_add_number)
3990 << ((BITS_PER_CHAR * nbytes) - bits_available));
3992 if ((bits_available -= width) == 0
3993 || is_it_end_of_statement ()
3994 || *input_line_pointer != ',')
3997 } /* All the bitfields we're gonna get. */
3999 hold = ++input_line_pointer;
4000 (void) expression (exp);
4003 exp->X_add_number = value;
4004 exp->X_op = O_constant;
4005 exp->X_unsigned = 1;
4009 #endif /* BITFIELD_CONS_EXPRESSIONS */
4011 /* Handle an MRI style string expression. */
4015 parse_mri_cons (exp, nbytes)
4017 unsigned int nbytes;
4019 if (*input_line_pointer != '\''
4020 && (input_line_pointer[1] != '\''
4021 || (*input_line_pointer != 'A'
4022 && *input_line_pointer != 'E')))
4023 TC_PARSE_CONS_EXPRESSION (exp, nbytes);
4027 unsigned int result = 0;
4029 /* An MRI style string. Cut into as many bytes as will fit into
4030 a nbyte chunk, left justify if necessary, and separate with
4031 commas so we can try again later. */
4032 if (*input_line_pointer == 'A')
4033 ++input_line_pointer;
4034 else if (*input_line_pointer == 'E')
4036 as_bad (_("EBCDIC constants are not supported"));
4037 ++input_line_pointer;
4040 input_line_pointer++;
4041 for (scan = 0; scan < nbytes; scan++)
4043 if (*input_line_pointer == '\'')
4045 if (input_line_pointer[1] == '\'')
4047 input_line_pointer++;
4052 result = (result << 8) | (*input_line_pointer++);
4056 while (scan < nbytes)
4062 /* Create correct expression. */
4063 exp->X_op = O_constant;
4064 exp->X_add_number = result;
4066 /* Fake it so that we can read the next char too. */
4067 if (input_line_pointer[0] != '\'' ||
4068 (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))
4070 input_line_pointer -= 2;
4071 input_line_pointer[0] = ',';
4072 input_line_pointer[1] = '\'';
4075 input_line_pointer++;
4078 #endif /* TC_M68K */
4080 #ifdef REPEAT_CONS_EXPRESSIONS
4082 /* Parse a repeat expression for cons. This is used by the MIPS
4083 assembler. The format is NUMBER:COUNT; NUMBER appears in the
4084 object file COUNT times.
4086 To use this for a target, define REPEAT_CONS_EXPRESSIONS. */
4089 parse_repeat_cons (exp, nbytes)
4091 unsigned int nbytes;
4098 if (*input_line_pointer != ':')
4100 /* No repeat count. */
4104 ++input_line_pointer;
4105 expression (&count);
4106 if (count.X_op != O_constant
4107 || count.X_add_number <= 0)
4109 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4113 /* The cons function is going to output this expression once. So we
4114 output it count - 1 times. */
4115 for (i = count.X_add_number - 1; i > 0; i--)
4116 emit_expr (exp, nbytes);
4119 #endif /* REPEAT_CONS_EXPRESSIONS */
4121 /* Parse a floating point number represented as a hex constant. This
4122 permits users to specify the exact bits they want in the floating
4126 hex_float (int float_type, char *bytes)
4158 as_bad (_("unknown floating type type '%c'"), float_type);
4162 /* It would be nice if we could go through expression to parse the
4163 hex constant, but if we get a bignum it's a pain to sort it into
4164 the buffer correctly. */
4166 while (hex_p (*input_line_pointer) || *input_line_pointer == '_')
4170 /* The MRI assembler accepts arbitrary underscores strewn about
4171 through the hex constant, so we ignore them as well. */
4172 if (*input_line_pointer == '_')
4174 ++input_line_pointer;
4180 as_warn (_("floating point constant too large"));
4183 d = hex_value (*input_line_pointer) << 4;
4184 ++input_line_pointer;
4185 while (*input_line_pointer == '_')
4186 ++input_line_pointer;
4187 if (hex_p (*input_line_pointer))
4189 d += hex_value (*input_line_pointer);
4190 ++input_line_pointer;
4192 if (target_big_endian)
4195 bytes[length - i - 1] = d;
4201 if (target_big_endian)
4202 memset (bytes + i, 0, length - i);
4204 memset (bytes, 0, length - i);
4212 CONStruct some more frag chars of .floats .ffloats etc.
4213 Makes 0 or more new frags.
4214 If need_pass_2 == 1, no frags are emitted.
4215 This understands only floating literals, not expressions. Sorry.
4217 A floating constant is defined by atof_generic(), except it is preceded
4218 by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
4219 reading, I decided to be incompatible. This always tries to give you
4220 rounded bits to the precision of the pseudo-op. Former AS did premature
4221 truncation, restored noisy bits instead of trailing 0s AND gave you
4222 a choice of 2 flavours of noise according to which of 2 floating-point
4223 scanners you directed AS to use.
4225 In: input_line_pointer->whitespace before, or '0' of flonum. */
4228 float_cons (/* Clobbers input_line-pointer, checks end-of-line. */
4229 register int float_type /* 'f':.ffloat ... 'F':.float ... */)
4232 int length; /* Number of chars in an object. */
4233 register char *err; /* Error from scanning floating literal. */
4234 char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
4236 if (is_it_end_of_statement ())
4238 demand_empty_rest_of_line ();
4242 #ifdef md_flush_pending_output
4243 md_flush_pending_output ();
4248 /* input_line_pointer->1st char of a flonum (we hope!). */
4251 /* Skip any 0{letter} that may be present. Don't even check if the
4252 letter is legal. Someone may invent a "z" format and this routine
4253 has no use for such information. Lusers beware: you get
4254 diagnostics if your input is ill-conditioned. */
4255 if (input_line_pointer[0] == '0'
4256 && ISALPHA (input_line_pointer[1]))
4257 input_line_pointer += 2;
4259 /* Accept :xxxx, where the x's are hex digits, for a floating
4260 point with the exact digits specified. */
4261 if (input_line_pointer[0] == ':')
4263 ++input_line_pointer;
4264 length = hex_float (float_type, temp);
4267 ignore_rest_of_line ();
4273 err = md_atof (float_type, temp, &length);
4274 know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
4278 as_bad (_("bad floating literal: %s"), err);
4279 ignore_rest_of_line ();
4290 #ifdef REPEAT_CONS_EXPRESSIONS
4291 if (*input_line_pointer == ':')
4293 expressionS count_exp;
4295 ++input_line_pointer;
4296 expression (&count_exp);
4298 if (count_exp.X_op != O_constant
4299 || count_exp.X_add_number <= 0)
4300 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4302 count = count_exp.X_add_number;
4306 while (--count >= 0)
4308 p = frag_more (length);
4309 memcpy (p, temp, (unsigned int) length);
4314 while (*input_line_pointer++ == ',');
4316 /* Put terminator back into stream. */
4317 --input_line_pointer;
4318 demand_empty_rest_of_line ();
4321 /* Return the size of a LEB128 value. */
4324 sizeof_sleb128 (offsetT value)
4326 register int size = 0;
4327 register unsigned byte;
4331 byte = (value & 0x7f);
4332 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
4333 Fortunately, we can structure things so that the extra work reduces
4334 to a noop on systems that do things "properly". */
4335 value = (value >> 7) | ~(-(offsetT)1 >> 7);
4338 while (!(((value == 0) && ((byte & 0x40) == 0))
4339 || ((value == -1) && ((byte & 0x40) != 0))));
4345 sizeof_uleb128 (valueT value)
4347 register int size = 0;
4348 register unsigned byte;
4352 byte = (value & 0x7f);
4362 sizeof_leb128 (valueT value, int sign)
4365 return sizeof_sleb128 ((offsetT) value);
4367 return sizeof_uleb128 (value);
4370 /* Output a LEB128 value. */
4373 output_sleb128 (char *p, offsetT value)
4375 register char *orig = p;
4380 unsigned byte = (value & 0x7f);
4382 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
4383 Fortunately, we can structure things so that the extra work reduces
4384 to a noop on systems that do things "properly". */
4385 value = (value >> 7) | ~(-(offsetT)1 >> 7);
4387 more = !((((value == 0) && ((byte & 0x40) == 0))
4388 || ((value == -1) && ((byte & 0x40) != 0))));
4400 output_uleb128 (char *p, valueT value)
4406 unsigned byte = (value & 0x7f);
4409 /* More bytes to follow. */
4420 output_leb128 (char *p, valueT value, int sign)
4423 return output_sleb128 (p, (offsetT) value);
4425 return output_uleb128 (p, value);
4428 /* Do the same for bignums. We combine sizeof with output here in that
4429 we don't output for NULL values of P. It isn't really as critical as
4430 for "normal" values that this be streamlined. */
4433 output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size)
4440 /* Strip leading sign extensions off the bignum. */
4442 && bignum[size - 1] == LITTLENUM_MASK
4443 && bignum[size - 2] > LITTLENUM_MASK / 2)
4448 /* OR in the next part of the littlenum. */
4449 val |= (*bignum << loaded);
4450 loaded += LITTLENUM_NUMBER_OF_BITS;
4454 /* Add bytes until there are less than 7 bits left in VAL
4455 or until every non-sign bit has been written. */
4462 || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1))
4469 while ((byte & 0x80) != 0 && loaded >= 7);
4473 /* Mop up any left-over bits (of which there will be less than 7). */
4474 if ((byte & 0x80) != 0)
4476 /* Sign-extend VAL. */
4477 if (val & (1 << (loaded - 1)))
4478 val |= ~0 << loaded;
4488 output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size)
4495 /* Strip leading zeros off the bignum. */
4496 /* XXX: Is this needed? */
4497 while (size > 0 && bignum[size - 1] == 0)
4502 if (loaded < 7 && size > 0)
4504 val |= (*bignum << loaded);
4505 loaded += 8 * CHARS_PER_LITTLENUM;
4514 if (size > 0 || val)
4521 while (byte & 0x80);
4527 output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign)
4530 return output_big_sleb128 (p, bignum, size);
4532 return output_big_uleb128 (p, bignum, size);
4535 /* Generate the appropriate fragments for a given expression to emit a
4539 emit_leb128_expr (expressionS *exp, int sign)
4541 operatorT op = exp->X_op;
4542 unsigned int nbytes;
4544 if (op == O_absent || op == O_illegal)
4546 as_warn (_("zero assumed for missing expression"));
4547 exp->X_add_number = 0;
4550 else if (op == O_big && exp->X_add_number <= 0)
4552 as_bad (_("floating point number invalid"));
4553 exp->X_add_number = 0;
4556 else if (op == O_register)
4558 as_warn (_("register value used as expression"));
4561 else if (op == O_constant
4563 && (exp->X_add_number < 0) != !exp->X_unsigned)
4565 /* We're outputting a signed leb128 and the sign of X_add_number
4566 doesn't reflect the sign of the original value. Convert EXP
4567 to a correctly-extended bignum instead. */
4568 convert_to_bignum (exp);
4572 /* Let check_eh_frame know that data is being emitted. nbytes == -1 is
4573 a signal that this is leb128 data. It shouldn't optimize this away. */
4574 nbytes = (unsigned int) -1;
4575 if (check_eh_frame (exp, &nbytes))
4578 /* Let the backend know that subsequent data may be byte aligned. */
4579 #ifdef md_cons_align
4583 if (op == O_constant)
4585 /* If we've got a constant, emit the thing directly right now. */
4587 valueT value = exp->X_add_number;
4591 size = sizeof_leb128 (value, sign);
4592 p = frag_more (size);
4593 output_leb128 (p, value, sign);
4595 else if (op == O_big)
4597 /* O_big is a different sort of constant. */
4602 size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign);
4603 p = frag_more (size);
4604 output_big_leb128 (p, generic_bignum, exp->X_add_number, sign);
4608 /* Otherwise, we have to create a variable sized fragment and
4609 resolve things later. */
4611 frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign,
4612 make_expr_symbol (exp), 0, (char *) NULL);
4616 /* Parse the .sleb128 and .uleb128 pseudos. */
4623 #ifdef md_flush_pending_output
4624 md_flush_pending_output ();
4630 emit_leb128_expr (&exp, sign);
4632 while (*input_line_pointer++ == ',');
4634 input_line_pointer--;
4635 demand_empty_rest_of_line ();
4638 /* We read 0 or more ',' separated, double-quoted strings.
4639 Caller should have checked need_pass_2 is FALSE because we don't
4643 stringer (/* Worker to do .ascii etc statements. */
4644 /* Checks end-of-line. */
4645 register int append_zero /* 0: don't append '\0', else 1. */)
4647 register unsigned int c;
4650 #ifdef md_flush_pending_output
4651 md_flush_pending_output ();
4654 /* The following awkward logic is to parse ZERO or more strings,
4655 comma separated. Recall a string expression includes spaces
4656 before the opening '\"' and spaces after the closing '\"'.
4657 We fake a leading ',' if there is (supposed to be)
4658 a 1st, expression. We keep demanding expressions for each ','. */
4659 if (is_it_end_of_statement ())
4661 c = 0; /* Skip loop. */
4662 ++input_line_pointer; /* Compensate for end of loop. */
4666 c = ','; /* Do loop. */
4668 /* If we have been switched into the abs_section then we
4669 will not have an obstack onto which we can hang strings. */
4670 if (now_seg == absolute_section)
4672 as_bad (_("strings must be placed into a section"));
4674 ignore_rest_of_line ();
4677 while (c == ',' || c == '<' || c == '"')
4680 switch (*input_line_pointer)
4683 ++input_line_pointer; /*->1st char of string. */
4684 start = input_line_pointer;
4685 while (is_a_char (c = next_char_of_string ()))
4687 FRAG_APPEND_1_CHAR (c);
4691 FRAG_APPEND_1_CHAR (0);
4693 know (input_line_pointer[-1] == '\"');
4697 /* In ELF, when gcc is emitting DWARF 1 debugging output, it
4698 will emit .string with a filename in the .debug section
4699 after a sequence of constants. See the comment in
4700 emit_expr for the sequence. emit_expr will set
4701 dwarf_file_string to non-zero if this string might be a
4702 source file name. */
4703 if (strcmp (segment_name (now_seg), ".debug") != 0)
4704 dwarf_file_string = 0;
4705 else if (dwarf_file_string)
4707 c = input_line_pointer[-1];
4708 input_line_pointer[-1] = '\0';
4709 listing_source_file (start);
4710 input_line_pointer[-1] = c;
4717 input_line_pointer++;
4718 c = get_single_number ();
4719 FRAG_APPEND_1_CHAR (c);
4720 if (*input_line_pointer != '>')
4722 as_bad (_("expected <nn>"));
4724 input_line_pointer++;
4727 input_line_pointer++;
4731 c = *input_line_pointer;
4734 demand_empty_rest_of_line ();
4737 /* FIXME-SOMEDAY: I had trouble here on characters with the
4738 high bits set. We'll probably also have trouble with
4739 multibyte chars, wide chars, etc. Also be careful about
4740 returning values bigger than 1 byte. xoxorich. */
4743 next_char_of_string (void)
4745 register unsigned int c;
4747 c = *input_line_pointer++ & CHAR_MASK;
4755 as_warn (_("unterminated string; newline inserted"));
4756 bump_line_counters ();
4759 #ifndef NO_STRING_ESCAPES
4761 switch (c = *input_line_pointer++)
4789 break; /* As itself. */
4805 for (i = 0, number = 0;
4806 ISDIGIT (c) && i < 3;
4807 c = *input_line_pointer++, i++)
4809 number = number * 8 + c - '0';
4814 --input_line_pointer;
4823 c = *input_line_pointer++;
4824 while (ISXDIGIT (c))
4827 number = number * 16 + c - '0';
4828 else if (ISUPPER (c))
4829 number = number * 16 + c - 'A' + 10;
4831 number = number * 16 + c - 'a' + 10;
4832 c = *input_line_pointer++;
4835 --input_line_pointer;
4840 /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
4841 as_warn (_("unterminated string; newline inserted"));
4843 bump_line_counters ();
4848 #ifdef ONLY_STANDARD_ESCAPES
4849 as_bad (_("bad escaped character in string"));
4851 #endif /* ONLY_STANDARD_ESCAPES */
4856 #endif /* ! defined (NO_STRING_ESCAPES) */
4865 get_segmented_expression (register expressionS *expP)
4867 register segT retval;
4869 retval = expression (expP);
4870 if (expP->X_op == O_illegal
4871 || expP->X_op == O_absent
4872 || expP->X_op == O_big)
4874 as_bad (_("expected address expression"));
4875 expP->X_op = O_constant;
4876 expP->X_add_number = 0;
4877 retval = absolute_section;
4883 get_known_segmented_expression (register expressionS *expP)
4885 register segT retval;
4887 if ((retval = get_segmented_expression (expP)) == undefined_section)
4889 /* There is no easy way to extract the undefined symbol from the
4891 if (expP->X_add_symbol != NULL
4892 && S_GET_SEGMENT (expP->X_add_symbol) != expr_section)
4893 as_warn (_("symbol \"%s\" undefined; zero assumed"),
4894 S_GET_NAME (expP->X_add_symbol));
4896 as_warn (_("some symbol undefined; zero assumed"));
4897 retval = absolute_section;
4898 expP->X_op = O_constant;
4899 expP->X_add_number = 0;
4901 know (retval == absolute_section || SEG_NORMAL (retval));
4905 char /* Return terminator. */
4906 get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */)
4908 /* FIXME: val_pointer should probably be offsetT *. */
4909 *val_pointer = (long) get_absolute_expression ();
4910 return (*input_line_pointer++);
4913 /* Like demand_copy_string, but return NULL if the string contains any '\0's.
4914 Give a warning if that happens. */
4917 demand_copy_C_string (int *len_pointer)
4921 if ((s = demand_copy_string (len_pointer)) != 0)
4925 for (len = *len_pointer; len > 0; len--)
4932 as_bad (_("this string may not contain \'\\0\'"));
4940 /* Demand string, but return a safe (=private) copy of the string.
4941 Return NULL if we can't read a string here. */
4944 demand_copy_string (int *lenP)
4946 register unsigned int c;
4952 if (*input_line_pointer == '\"')
4954 input_line_pointer++; /* Skip opening quote. */
4956 while (is_a_char (c = next_char_of_string ()))
4958 obstack_1grow (¬es, c);
4961 /* JF this next line is so demand_copy_C_string will return a
4962 null terminated string. */
4963 obstack_1grow (¬es, '\0');
4964 retval = obstack_finish (¬es);
4968 as_bad (_("missing string"));
4970 ignore_rest_of_line ();
4976 /* In: Input_line_pointer->next character.
4978 Do: Skip input_line_pointer over all whitespace.
4980 Out: 1 if input_line_pointer->end-of-line. */
4983 is_it_end_of_statement (void)
4986 return (is_end_of_line[(unsigned char) *input_line_pointer]);
4990 equals (char *sym_name, int reassign)
4995 input_line_pointer++;
4996 if (*input_line_pointer == '=')
4997 input_line_pointer++;
4998 if (reassign < 0 && *input_line_pointer == '=')
4999 input_line_pointer++;
5001 while (*input_line_pointer == ' ' || *input_line_pointer == '\t')
5002 input_line_pointer++;
5005 stop = mri_comment_field (&stopc);
5007 assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign);
5011 demand_empty_rest_of_line ();
5012 mri_comment_end (stop, stopc);
5016 /* .incbin -- include a file verbatim at the current location. */
5019 s_incbin (int x ATTRIBUTE_UNUSED)
5030 #ifdef md_flush_pending_output
5031 md_flush_pending_output ();
5035 filename = demand_copy_string (& len);
5036 if (filename == NULL)
5041 /* Look for optional skip and count. */
5042 if (* input_line_pointer == ',')
5044 ++ input_line_pointer;
5045 skip = get_absolute_expression ();
5049 if (* input_line_pointer == ',')
5051 ++ input_line_pointer;
5053 count = get_absolute_expression ();
5055 as_warn (_(".incbin count zero, ignoring `%s'"), filename);
5061 demand_empty_rest_of_line ();
5063 /* Try opening absolute path first, then try include dirs. */
5064 binfile = fopen (filename, FOPEN_RB);
5065 if (binfile == NULL)
5069 path = xmalloc ((unsigned long) len + include_dir_maxlen + 5);
5071 for (i = 0; i < include_dir_count; i++)
5073 sprintf (path, "%s/%s", include_dirs[i], filename);
5075 binfile = fopen (path, FOPEN_RB);
5076 if (binfile != NULL)
5080 if (binfile == NULL)
5081 as_bad (_("file not found: %s"), filename);
5084 path = xstrdup (filename);
5090 register_dependency (path);
5092 /* Compute the length of the file. */
5093 if (fseek (binfile, 0, SEEK_END) != 0)
5095 as_bad (_("seek to end of .incbin file failed `%s'"), path);
5098 file_len = ftell (binfile);
5100 /* If a count was not specified use the remainder of the file. */
5102 count = file_len - skip;
5104 if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len)
5106 as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"),
5107 skip, count, file_len);
5111 if (fseek (binfile, skip, SEEK_SET) != 0)
5113 as_bad (_("could not skip to %ld in file `%s'"), skip, path);
5117 /* Allocate frag space and store file contents in it. */
5118 binfrag = frag_more (count);
5120 bytes = fread (binfrag, 1, count, binfile);
5122 as_warn (_("truncated file `%s', %ld of %ld bytes read"),
5123 path, bytes, count);
5126 if (binfile != NULL)
5132 /* .include -- include a file at this point. */
5135 s_include (int arg ATTRIBUTE_UNUSED)
5144 filename = demand_copy_string (&i);
5145 if (filename == NULL)
5147 /* demand_copy_string has already printed an error and
5148 called ignore_rest_of_line. */
5156 while (!is_end_of_line[(unsigned char) *input_line_pointer]
5157 && *input_line_pointer != ' '
5158 && *input_line_pointer != '\t')
5160 obstack_1grow (¬es, *input_line_pointer);
5161 ++input_line_pointer;
5165 obstack_1grow (¬es, '\0');
5166 filename = obstack_finish (¬es);
5167 while (!is_end_of_line[(unsigned char) *input_line_pointer])
5168 ++input_line_pointer;
5171 demand_empty_rest_of_line ();
5172 path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ );
5174 for (i = 0; i < include_dir_count; i++)
5176 strcpy (path, include_dirs[i]);
5178 strcat (path, filename);
5179 if (0 != (try = fopen (path, FOPEN_RT)))
5189 /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
5190 register_dependency (path);
5191 input_scrub_insert_file (path);
5195 add_include_dir (char *path)
5199 if (include_dir_count == 0)
5201 include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs));
5202 include_dirs[0] = "."; /* Current dir. */
5203 include_dir_count = 2;
5207 include_dir_count++;
5209 (char **) realloc (include_dirs,
5210 include_dir_count * sizeof (*include_dirs));
5213 include_dirs[include_dir_count - 1] = path; /* New one. */
5216 if (i > include_dir_maxlen)
5217 include_dir_maxlen = i;
5220 /* Output debugging information to denote the source file. */
5223 generate_file_debug (void)
5225 if (debug_type == DEBUG_STABS)
5226 stabs_generate_asm_file ();
5229 /* Output line number debugging information for the current source line. */
5232 generate_lineno_debug (void)
5236 case DEBUG_UNSPECIFIED:
5241 stabs_generate_asm_lineno ();
5244 ecoff_generate_asm_lineno ();
5247 /* ??? We could here indicate to dwarf2dbg.c that something
5248 has changed. However, since there is additional backend
5249 support that is required (calling dwarf2_emit_insn), we
5250 let dwarf2dbg.c call as_where on its own. */
5255 /* Output debugging information to mark a function entry point or end point.
5256 END_P is zero for .func, and non-zero for .endfunc. */
5261 do_s_func (end_p, NULL);
5264 /* Subroutine of s_func so targets can choose a different default prefix.
5265 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
5268 do_s_func (int end_p, const char *default_prefix)
5270 /* Record the current function so that we can issue an error message for
5271 misplaced .func,.endfunc, and also so that .endfunc needs no
5273 static char *current_name;
5274 static char *current_label;
5278 if (current_name == NULL)
5280 as_bad (_("missing .func"));
5281 ignore_rest_of_line ();
5285 if (debug_type == DEBUG_STABS)
5286 stabs_generate_asm_endfunc (current_name, current_label);
5288 current_name = current_label = NULL;
5293 char delim1, delim2;
5295 if (current_name != NULL)
5297 as_bad (_(".endfunc missing for previous .func"));
5298 ignore_rest_of_line ();
5302 name = input_line_pointer;
5303 delim1 = get_symbol_end ();
5304 name = xstrdup (name);
5305 *input_line_pointer = delim1;
5307 if (*input_line_pointer != ',')
5310 asprintf (&label, "%s%s", default_prefix, name);
5313 char leading_char = bfd_get_symbol_leading_char (stdoutput);
5314 /* Missing entry point, use function's name with the leading
5317 asprintf (&label, "%c%s", leading_char, name);
5324 ++input_line_pointer;
5326 label = input_line_pointer;
5327 delim2 = get_symbol_end ();
5328 label = xstrdup (label);
5329 *input_line_pointer = delim2;
5332 if (debug_type == DEBUG_STABS)
5333 stabs_generate_asm_func (name, label);
5335 current_name = name;
5336 current_label = label;
5339 demand_empty_rest_of_line ();
5343 s_ignore (int arg ATTRIBUTE_UNUSED)
5345 ignore_rest_of_line ();
5349 read_print_statistics (FILE *file)
5351 hash_print_statistics (file, "pseudo-op table", po_hash);
5354 /* Inserts the given line into the input stream.
5356 This call avoids macro/conditionals nesting checking, since the contents of
5357 the line are assumed to replace the contents of a line already scanned.
5359 An appropriate use of this function would be substitution of input lines when
5360 called by md_start_line_hook(). The given line is assumed to already be
5361 properly scrubbed. */
5364 input_scrub_insert_line (const char *line)
5368 sb_add_string (&newline, line);
5369 input_scrub_include_sb (&newline, input_line_pointer, 0);
5371 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
5374 /* Insert a file into the input stream; the path must resolve to an actual
5375 file; no include path searching or dependency registering is performed. */
5378 input_scrub_insert_file (char *path)
5380 input_scrub_include_file (path, input_line_pointer);
5381 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
5384 /* Find the end of a line, considering quotation and escaping of quotes. */
5386 #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS)
5387 # define TC_SINGLE_QUOTE_STRINGS 1
5391 _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED)
5393 char inquote = '\0';
5396 while (!is_end_of_line[(unsigned char) *s]
5397 || (inquote && !ISCNTRL (*s))
5398 || (inquote == '\'' && flag_mri)
5399 #ifdef TC_EOL_IN_INSN
5400 || (insn && TC_EOL_IN_INSN (s))
5404 if (mri_string && *s == '\'')
5408 else if (*s == '\\')
5412 #ifdef TC_SINGLE_QUOTE_STRINGS
5413 || (TC_SINGLE_QUOTE_STRINGS && *s == '\'')
5420 as_warn (_("missing closing `%c'"), inquote);
5422 as_warn (_("stray `\\'"));
5427 find_end_of_line (char *s, int mri_string)
5429 return _find_end_of_line (s, mri_string, 0);