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 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 /* If your chars aren't 8 bits, you will change this a bit.
24 But then, GNU isn't spozed to run on your machine anyway.
25 (RMS is so shortsighted sometimes.) */
26 #define MASK_CHAR (0xFF)
28 #define MASK_CHAR ((int)(unsigned char) -1)
31 /* This is the largest known floating point format (for now). It will
32 grow when we do 4361 style flonums. */
33 #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
35 /* Routines that read assembler source text to build spagetti in memory.
36 Another group of these functions is in the expr.c module. */
39 #include "safe-ctype.h"
47 #ifndef TC_START_LABEL
48 #define TC_START_LABEL(x,y) (x == ':')
51 /* Set by the object-format or the target. */
52 #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
53 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
58 else if ((SIZE) >= 4) \
60 else if ((SIZE) >= 2) \
68 char *input_line_pointer
; /*->next char of source file to parse. */
70 #if BITS_PER_CHAR != 8
71 /* The following table is indexed by[(char)] and will break if
72 a char does not have exactly 256 states (hopefully 0:255!)! */
77 /* The m88k unfortunately uses @ as a label beginner. */
82 /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */
87 /* The Delta 68k assembler permits % inside label names. */
92 /* The PowerPC Windows NT assemblers permits ? inside label names. */
97 /* The IA-64 assembler uses # as a suffix designating a symbol. We include
98 it in the symbol and strip it out in tc_canonicalize_symbol_name. */
103 /* The a29k assembler does not permits labels to start with $. */
108 /* The Delta 68k assembler permits ~ at start of label names. */
112 /* Used by is_... macros. our ctype[]. */
113 char lex_type
[256] = {
114 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
115 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
116 0, 0, 0, LEX_HASH
, LEX_DOLLAR
, LEX_PCT
, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
117 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM
, /* 0123456789:;<=>? */
118 LEX_AT
, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
119 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR
, 0, LEX_BR
, 0, 3, /* PQRSTUVWXYZ[\]^_ */
120 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
121 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR
, 0, LEX_BR
, LEX_TILDE
, 0, /* pqrstuvwxyz{|}~. */
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,
126 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
127 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
128 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
129 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
133 Out: 1 if this character ends a line. */
134 char is_end_of_line
[256] = {
136 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
138 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */
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, /* 0123456789:;<=>? */
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, /* */
151 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
152 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
153 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
154 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */
157 #ifdef IGNORE_OPCODE_CASE
158 char original_case_string
[128];
161 /* Functions private to this file. */
163 static char *buffer
; /* 1st char of each buffer of lines is here. */
164 static char *buffer_limit
; /*->1 + last char in buffer. */
166 /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1
167 in the tc-<CPU>.h file. See the "Porting GAS" section of the
169 int target_big_endian
= TARGET_BYTES_BIG_ENDIAN
;
171 static char *old_buffer
; /* JF a hack. */
172 static char *old_input
;
173 static char *old_limit
;
175 /* Variables for handling include file directory table. */
177 /* Table of pointers to directories to search for .include's. */
180 /* How many are in the table. */
181 int include_dir_count
;
183 /* Length of longest in table. */
184 int include_dir_maxlen
= 1;
186 #ifndef WORKING_DOT_WORD
187 struct broken_word
*broken_words
;
188 int new_broken_words
;
191 /* The current offset into the absolute section. We don't try to
192 build frags in the absolute section, since no data can be stored
193 there. We just keep track of the current offset. */
194 addressT abs_section_offset
;
196 /* If this line had an MRI style label, it is stored in this variable.
197 This is used by some of the MRI pseudo-ops. */
200 /* This global variable is used to support MRI common sections. We
201 translate such sections into a common symbol. This variable is
202 non-NULL when we are in an MRI common section. */
203 symbolS
*mri_common_symbol
;
205 /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we
206 need to align to an even byte boundary unless the next pseudo-op is
207 dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment
209 static int mri_pending_align
;
213 /* This variable is set to be non-zero if the next string we see might
214 be the name of the source file in DWARF debugging information. See
215 the comment in emit_expr for the format we look for. */
216 static int dwarf_file_string
;
220 static void cons_worker
PARAMS ((int, int));
221 static int scrub_from_string
PARAMS ((char *, int));
222 static void do_align
PARAMS ((int, char *, int, int));
223 static void s_align
PARAMS ((int, int));
224 static void s_lcomm_internal
PARAMS ((int, int));
225 static int hex_float
PARAMS ((int, char *));
226 static inline int sizeof_sleb128
PARAMS ((offsetT
));
227 static inline int sizeof_uleb128
PARAMS ((valueT
));
228 static inline int output_sleb128
PARAMS ((char *, offsetT
));
229 static inline int output_uleb128
PARAMS ((char *, valueT
));
230 static inline int output_big_sleb128
PARAMS ((char *, LITTLENUM_TYPE
*, int));
231 static inline int output_big_uleb128
PARAMS ((char *, LITTLENUM_TYPE
*, int));
232 static int output_big_leb128
PARAMS ((char *, LITTLENUM_TYPE
*, int, int));
233 static void do_org
PARAMS ((segT
, expressionS
*, int));
234 char *demand_copy_string
PARAMS ((int *lenP
));
235 static segT get_segmented_expression
PARAMS ((expressionS
*expP
));
236 static segT get_known_segmented_expression
PARAMS ((expressionS
* expP
));
237 static void pobegin
PARAMS ((void));
238 static int get_line_sb
PARAMS ((sb
*));
239 static void generate_file_debug
PARAMS ((void));
247 obj_read_begin_hook ();
249 /* Something close -- but not too close -- to a multiple of 1024.
250 The debugging malloc I'm using has 24 bytes of overhead. */
251 obstack_begin (¬es
, chunksize
);
252 obstack_begin (&cond_obstack
, chunksize
);
254 /* Use machine dependent syntax. */
255 for (p
= line_separator_chars
; *p
; p
++)
256 is_end_of_line
[(unsigned char) *p
] = 1;
257 /* Use more. FIXME-SOMEDAY. */
263 /* Set up pseudo-op tables. */
265 static struct hash_control
*po_hash
;
267 static const pseudo_typeS potable
[] = {
268 {"abort", s_abort
, 0},
269 {"align", s_align_ptwo
, 0},
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},
283 {"dc.d", float_cons
, 'd'},
285 {"dc.s", float_cons
, 'f'},
287 {"dc.x", float_cons
, 'x'},
289 {"dcb.b", s_space
, 1},
290 {"dcb.d", s_float_space
, 'd'},
291 {"dcb.l", s_space
, 4},
292 {"dcb.s", s_float_space
, 'f'},
293 {"dcb.w", s_space
, 2},
294 {"dcb.x", s_float_space
, 'x'},
296 {"ds.b", s_space
, 1},
297 {"ds.d", s_space
, 8},
298 {"ds.l", s_space
, 4},
299 {"ds.p", s_space
, 12},
300 {"ds.s", s_space
, 4},
301 {"ds.w", s_space
, 2},
302 {"ds.x", s_space
, 12},
303 {"debug", s_ignore
, 0},
308 {"double", float_cons
, 'd'},
310 {"eject", listing_eject
, 0}, /* Formfeed listing. */
312 {"elsec", s_else
, 0},
313 {"elseif", s_elseif
, (int) O_ne
},
315 {"endc", s_endif
, 0},
316 {"endfunc", s_func
, 1},
317 {"endif", s_endif
, 0},
318 {"endr", s_bad_endr
, 0},
323 {"exitm", s_mexit
, 0},
325 {"extern", s_ignore
, 0}, /* We treat all undef as ext. */
326 {"appfile", s_app_file
, 1},
327 {"appline", s_app_line
, 0},
329 {"file", s_app_file
, 0},
331 {"float", float_cons
, 'f'},
332 {"format", s_ignore
, 0},
334 {"global", s_globl
, 0},
335 {"globl", s_globl
, 0},
337 {"if", s_if
, (int) O_ne
},
339 {"ifdef", s_ifdef
, 0},
340 {"ifeq", s_if
, (int) O_eq
},
341 {"ifeqs", s_ifeqs
, 0},
342 {"ifge", s_if
, (int) O_ge
},
343 {"ifgt", s_if
, (int) O_gt
},
344 {"ifle", s_if
, (int) O_le
},
345 {"iflt", s_if
, (int) O_lt
},
347 {"ifndef", s_ifdef
, 1},
348 {"ifne", s_if
, (int) O_ne
},
349 {"ifnes", s_ifeqs
, 1},
350 {"ifnotdef", s_ifdef
, 1},
351 {"incbin", s_incbin
, 0},
352 {"include", s_include
, 0},
358 {"lcomm", s_lcomm
, 0},
359 {"lflags", listing_flags
, 0}, /* Listing flags. */
360 {"linkonce", s_linkonce
, 0},
361 {"list", listing_list
, 1}, /* Turn listing on. */
362 {"llen", listing_psize
, 1},
365 {"macro", s_macro
, 0},
366 {"mexit", s_mexit
, 0},
368 {".mri", s_mri
, 0}, /* Special case so .mri works in MRI mode. */
369 {"name", s_ignore
, 0},
370 {"noformat", s_ignore
, 0},
371 {"nolist", listing_list
, 0}, /* Turn listing off. */
372 {"nopage", listing_nopage
, 0},
374 {"offset", s_struct
, 0},
376 {"p2align", s_align_ptwo
, 0},
377 {"p2alignw", s_align_ptwo
, -2},
378 {"p2alignl", s_align_ptwo
, -4},
379 {"page", listing_eject
, 0},
380 {"plen", listing_psize
, 0},
381 {"print", s_print
, 0},
382 {"psize", listing_psize
, 0}, /* Set paper size. */
383 {"purgem", s_purgem
, 0},
388 {"sbttl", listing_title
, 1}, /* Subtitle of listing. */
393 {"single", float_cons
, 'f'},
395 {"space", s_space
, 0},
396 {"skip", s_space
, 0},
397 {"sleb128", s_leb128
, 1},
398 {"spc", s_ignore
, 0},
399 {"stabd", s_stab
, 'd'},
400 {"stabn", s_stab
, 'n'},
401 {"stabs", s_stab
, 's'},
402 {"string", stringer
, 1},
403 {"struct", s_struct
, 0},
407 /* This is for gcc to use. It's only just been added (2/94), so gcc
408 won't be able to use it for a while -- probably a year or more.
409 But once this has been released, check with gcc maintainers
410 before deleting it or even changing the spelling. */
411 {"this_GCC_requires_the_GNU_assembler", s_ignore
, 0},
412 /* If we're folding case -- done for some targets, not necessarily
413 all -- the above string in an input file will be converted to
414 this one. Match it either way... */
415 {"this_gcc_requires_the_gnu_assembler", s_ignore
, 0},
417 {"title", listing_title
, 0}, /* Listing title. */
418 {"ttl", listing_title
, 0},
420 {"uleb128", s_leb128
, 0},
424 {"xdef", s_globl
, 0},
425 {"xref", s_ignore
, 0},
426 {"xstabs", s_xstab
, 's'},
428 {"zero", s_space
, 0},
429 {NULL
, NULL
, 0} /* End sentinel. */
432 static int pop_override_ok
= 0;
433 static const char *pop_table_name
;
437 const pseudo_typeS
*table
;
440 const pseudo_typeS
*pop
;
441 for (pop
= table
; pop
->poc_name
; pop
++)
443 errtxt
= hash_insert (po_hash
, pop
->poc_name
, (char *) pop
);
444 if (errtxt
&& (!pop_override_ok
|| strcmp (errtxt
, "exists")))
445 as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name
,
450 #ifndef md_pop_insert
451 #define md_pop_insert() pop_insert(md_pseudo_table)
454 #ifndef obj_pop_insert
455 #define obj_pop_insert() pop_insert(obj_pseudo_table)
461 po_hash
= hash_new ();
463 /* Do the target-specific pseudo ops. */
464 pop_table_name
= "md";
467 /* Now object specific. Skip any that were in the target table. */
468 pop_table_name
= "obj";
472 /* Now portable ones. Skip any that we've seen already. */
473 pop_table_name
= "standard";
474 pop_insert (potable
);
477 #define HANDLE_CONDITIONAL_ASSEMBLY() \
478 if (ignore_input ()) \
480 while (!is_end_of_line[(unsigned char) *input_line_pointer++]) \
481 if (input_line_pointer == buffer_limit) \
486 /* This function is used when scrubbing the characters between #APP
489 static char *scrub_string
;
490 static char *scrub_string_end
;
493 scrub_from_string (buf
, buflen
)
499 copy
= scrub_string_end
- scrub_string
;
502 memcpy (buf
, scrub_string
, copy
);
503 scrub_string
+= copy
;
507 /* We read the file, putting things into a web that represents what we
508 have been reading. */
510 read_a_source_file (name
)
514 register char *s
; /* String of symbol, '\0' appended. */
522 buffer
= input_scrub_new_file (name
);
525 listing_newline (NULL
);
526 register_dependency (name
);
528 /* Generate debugging information before we've read anything in to denote
529 this file as the "main" source file and not a subordinate one
530 (e.g. N_SO vs N_SOL in stabs). */
531 generate_file_debug ();
533 while ((buffer_limit
= input_scrub_next_buffer (&input_line_pointer
)) != 0)
534 { /* We have another line to parse. */
535 know (buffer_limit
[-1] == '\n'); /* Must have a sentinel. */
536 contin
: /* JF this goto is my fault I admit it.
537 Someone brave please re-write the whole
538 input section here? Pleeze??? */
539 while (input_line_pointer
< buffer_limit
)
541 /* We have more of this buffer to parse. */
543 /* We now have input_line_pointer->1st char of next line.
544 If input_line_pointer [-1] == '\n' then we just
545 scanned another line: so bump line counters. */
546 if (is_end_of_line
[(unsigned char) input_line_pointer
[-1]])
548 #ifdef md_start_line_hook
549 md_start_line_hook ();
551 if (input_line_pointer
[-1] == '\n')
552 bump_line_counters ();
556 if (LABELS_WITHOUT_COLONS
|| flag_m68k_mri
)
558 /* Text at the start of a line must be a label, we
559 run down and stick a colon in. */
560 if (is_name_beginner (*input_line_pointer
))
562 char *line_start
= input_line_pointer
;
567 HANDLE_CONDITIONAL_ASSEMBLY ();
569 c
= get_symbol_end ();
571 /* In MRI mode, the EQU and MACRO pseudoops must
572 be handled specially. */
576 char *rest
= input_line_pointer
+ 1;
580 if (*rest
== ' ' || *rest
== '\t')
582 if ((strncasecmp (rest
, "EQU", 3) == 0
583 || strncasecmp (rest
, "SET", 3) == 0)
584 && (rest
[3] == ' ' || rest
[3] == '\t'))
586 input_line_pointer
= rest
+ 3;
588 strncasecmp (rest
, "SET", 3) == 0);
591 if (strncasecmp (rest
, "MACRO", 5) == 0
594 || is_end_of_line
[(unsigned char) rest
[5]]))
598 /* In MRI mode, we need to handle the MACRO
599 pseudo-op specially: we don't want to put the
600 symbol in the symbol table. */
602 #ifdef TC_START_LABEL_WITHOUT_COLON
603 && TC_START_LABEL_WITHOUT_COLON(c
,
607 line_label
= colon (line_start
);
609 line_label
= symbol_create (line_start
,
614 *input_line_pointer
= c
;
616 input_line_pointer
++;
621 /* We are at the begining of a line, or similar place.
622 We expect a well-formed assembler statement.
623 A "symbol-name:" is a statement.
625 Depending on what compiler is used, the order of these tests
626 may vary to catch most common case 1st.
627 Each test is independent of all other tests at the (top) level.
628 PLEASE make a compiler that doesn't use this assembler.
629 It is crufty to waste a compiler's time encoding things for this
630 assembler, which then wastes more time decoding it.
631 (And communicating via (linear) files is silly!
632 If you must pass stuff, please pass a tree!) */
633 if ((c
= *input_line_pointer
++) == '\t'
637 c
= *input_line_pointer
++;
639 know (c
!= ' '); /* No further leading whitespace. */
642 /* If listing is on, and we are expanding a macro, then give
643 the listing code the contents of the expanded line. */
646 if ((listing
& LISTING_MACEXP
) && macro_nest
> 0)
651 /* Find the end of the current expanded macro line. */
652 for (s
= input_line_pointer
- 1; *s
; ++s
)
653 if (is_end_of_line
[(unsigned char) *s
])
656 /* Copy it for safe keeping. Also give an indication of
657 how much macro nesting is involved at this point. */
658 len
= s
- (input_line_pointer
- 1);
659 copy
= (char *) xmalloc (len
+ macro_nest
+ 2);
660 memset (copy
, '>', macro_nest
);
661 copy
[macro_nest
] = ' ';
662 memcpy (copy
+ macro_nest
+ 1, input_line_pointer
- 1, len
);
663 copy
[macro_nest
+ 1 + len
] = '\0';
665 /* Install the line with the listing facility. */
666 listing_newline (copy
);
669 listing_newline (NULL
);
672 /* C is the 1st significant character.
673 Input_line_pointer points after that character. */
674 if (is_name_beginner (c
))
676 /* Want user-defined label or pseudo/opcode. */
677 HANDLE_CONDITIONAL_ASSEMBLY ();
679 s
= --input_line_pointer
;
680 c
= get_symbol_end (); /* name's delimiter. */
682 /* C is character after symbol.
683 That character's place in the input line is now '\0'.
684 S points to the beginning of the symbol.
685 [In case of pseudo-op, s->'.'.]
686 Input_line_pointer->'\0' where c was. */
687 if (TC_START_LABEL (c
, input_line_pointer
))
691 char *rest
= input_line_pointer
+ 1;
693 /* In MRI mode, \tsym: set 0 is permitted. */
697 if (*rest
== ' ' || *rest
== '\t')
700 if ((strncasecmp (rest
, "EQU", 3) == 0
701 || strncasecmp (rest
, "SET", 3) == 0)
702 && (rest
[3] == ' ' || rest
[3] == '\t'))
704 input_line_pointer
= rest
+ 3;
710 line_label
= colon (s
); /* User-defined label. */
711 /* Put ':' back for error messages' sake. */
712 *input_line_pointer
++ = ':';
713 #ifdef tc_check_label
714 tc_check_label (line_label
);
716 /* Input_line_pointer->after ':'. */
720 || ((c
== ' ' || c
== '\t')
721 && input_line_pointer
[1] == '='
722 #ifdef TC_EQUAL_IN_INSN
723 && !TC_EQUAL_IN_INSN (c
, input_line_pointer
)
728 demand_empty_rest_of_line ();
732 /* Expect pseudo-op or machine instruction. */
735 #ifdef IGNORE_OPCODE_CASE
739 strncpy (original_case_string
, s2
, sizeof (original_case_string
));
740 original_case_string
[sizeof (original_case_string
) - 1] = 0;
749 if (NO_PSEUDO_DOT
|| flag_m68k_mri
)
751 /* The MRI assembler and the m88k use pseudo-ops
753 pop
= (pseudo_typeS
*) hash_find (po_hash
, s
);
754 if (pop
!= NULL
&& pop
->poc_handler
== NULL
)
759 || (!flag_m68k_mri
&& *s
== '.'))
763 WARNING: c has next char, which may be end-of-line.
764 We lookup the pseudo-op table with s+1 because we
765 already know that the pseudo-op begins with a '.'. */
768 pop
= (pseudo_typeS
*) hash_find (po_hash
, s
+ 1);
770 /* In MRI mode, we may need to insert an
771 automatic alignment directive. What a hack
773 if (mri_pending_align
775 || !((pop
->poc_handler
== cons
776 && pop
->poc_val
== 1)
777 || (pop
->poc_handler
== s_space
778 && pop
->poc_val
== 1)
779 #ifdef tc_conditional_pseudoop
780 || tc_conditional_pseudoop (pop
)
782 || pop
->poc_handler
== s_if
783 || pop
->poc_handler
== s_ifdef
784 || pop
->poc_handler
== s_ifc
785 || pop
->poc_handler
== s_ifeqs
786 || pop
->poc_handler
== s_else
787 || pop
->poc_handler
== s_endif
788 || pop
->poc_handler
== s_globl
789 || pop
->poc_handler
== s_ignore
)))
791 do_align (1, (char *) NULL
, 0, 0);
792 mri_pending_align
= 0;
794 if (line_label
!= NULL
)
796 symbol_set_frag (line_label
, frag_now
);
797 S_SET_VALUE (line_label
, frag_now_fix ());
801 /* Print the error msg now, while we still can. */
804 as_bad (_("unknown pseudo-op: `%s'"), s
);
805 *input_line_pointer
= c
;
810 /* Put it back for error messages etc. */
811 *input_line_pointer
= c
;
812 /* The following skip of whitespace is compulsory.
813 A well shaped space is sometimes all that separates
814 keyword from operands. */
815 if (c
== ' ' || c
== '\t')
816 input_line_pointer
++;
818 /* Input_line is restored.
819 Input_line_pointer->1st non-blank char
820 after pseudo-operation. */
821 (*pop
->poc_handler
) (pop
->poc_val
);
823 /* If that was .end, just get out now. */
824 if (pop
->poc_handler
== s_end
)
830 #ifdef QUOTES_IN_INSN
834 /* WARNING: c has char, which may be end-of-line. */
835 /* Also: input_line_pointer->`\0` where c was. */
836 *input_line_pointer
= c
;
837 while (!is_end_of_line
[(unsigned char) *input_line_pointer
]
839 #ifdef TC_EOL_IN_INSN
840 || TC_EOL_IN_INSN (input_line_pointer
)
844 if (flag_m68k_mri
&& *input_line_pointer
== '\'')
846 #ifdef QUOTES_IN_INSN
849 else if (*input_line_pointer
== '"')
851 else if (*input_line_pointer
== '\\')
854 input_line_pointer
++;
857 c
= *input_line_pointer
;
858 *input_line_pointer
= '\0';
860 generate_lineno_debug ();
868 if (check_macro (s
, &out
, &err
, ¯o
))
872 *input_line_pointer
++ = c
;
873 input_scrub_include_sb (&out
,
874 input_line_pointer
, 1);
877 input_scrub_next_buffer (&input_line_pointer
);
879 md_macro_info (macro
);
885 if (mri_pending_align
)
887 do_align (1, (char *) NULL
, 0, 0);
888 mri_pending_align
= 0;
889 if (line_label
!= NULL
)
891 symbol_set_frag (line_label
, frag_now
);
892 S_SET_VALUE (line_label
, frag_now_fix ());
896 md_assemble (s
); /* Assemble 1 instruction. */
898 *input_line_pointer
++ = c
;
900 /* We resume loop AFTER the end-of-line from
907 /* Empty statement? */
908 if (is_end_of_line
[(unsigned char) c
])
911 if ((LOCAL_LABELS_DOLLAR
|| LOCAL_LABELS_FB
) && ISDIGIT (c
))
913 /* local label ("4:") */
914 char *backup
= input_line_pointer
;
916 HANDLE_CONDITIONAL_ASSEMBLY ();
920 /* Read the whole number. */
921 while (ISDIGIT (*input_line_pointer
))
923 temp
= (temp
* 10) + *input_line_pointer
- '0';
924 ++input_line_pointer
;
927 if (LOCAL_LABELS_DOLLAR
928 && *input_line_pointer
== '$'
929 && *(input_line_pointer
+ 1) == ':')
931 input_line_pointer
+= 2;
933 if (dollar_label_defined (temp
))
935 as_fatal (_("label \"%d$\" redefined"), temp
);
938 define_dollar_label (temp
);
939 colon (dollar_label_name (temp
, 0));
944 && *input_line_pointer
++ == ':')
946 fb_label_instance_inc (temp
);
947 colon (fb_label_name (temp
, 0));
951 input_line_pointer
= backup
;
952 } /* local label ("4:") */
954 if (c
&& strchr (line_comment_chars
, c
))
955 { /* Its a comment. Better say APP or NO_APP. */
959 unsigned int new_length
;
962 bump_line_counters ();
963 s
= input_line_pointer
;
964 if (strncmp (s
, "APP\n", 4))
965 continue; /* We ignore it */
968 ends
= strstr (s
, "#NO_APP\n");
972 unsigned int tmp_len
;
975 /* The end of the #APP wasn't in this buffer. We
976 keep reading in buffers until we find the #NO_APP
977 that goes with this #APP There is one. The specs
979 tmp_len
= buffer_limit
- s
;
980 tmp_buf
= xmalloc (tmp_len
+ 1);
981 memcpy (tmp_buf
, s
, tmp_len
);
984 new_tmp
= input_scrub_next_buffer (&buffer
);
988 buffer_limit
= new_tmp
;
989 input_line_pointer
= buffer
;
990 ends
= strstr (buffer
, "#NO_APP\n");
994 num
= buffer_limit
- buffer
;
996 tmp_buf
= xrealloc (tmp_buf
, tmp_len
+ num
);
997 memcpy (tmp_buf
+ tmp_len
, buffer
, num
);
1002 input_line_pointer
= ends
? ends
+ 8 : NULL
;
1010 input_line_pointer
= ends
+ 8;
1014 scrub_string_end
= ends
;
1016 new_length
= ends
- s
;
1017 new_buf
= (char *) xmalloc (new_length
);
1024 space
= (new_buf
+ new_length
) - new_tmp
;
1025 size
= do_scrub_chars (scrub_from_string
, new_tmp
, space
);
1033 new_buf
= xrealloc (new_buf
, new_length
+ 100);
1034 new_tmp
= new_buf
+ new_length
;
1040 old_buffer
= buffer
;
1041 old_input
= input_line_pointer
;
1042 old_limit
= buffer_limit
;
1044 input_line_pointer
= new_buf
;
1045 buffer_limit
= new_tmp
;
1050 HANDLE_CONDITIONAL_ASSEMBLY ();
1052 #ifdef tc_unrecognized_line
1053 if (tc_unrecognized_line (c
))
1056 input_line_pointer
--;
1057 /* Report unknown char as ignored. */
1058 ignore_rest_of_line ();
1061 #ifdef md_after_pass_hook
1062 md_after_pass_hook ();
1068 bump_line_counters ();
1071 buffer
= old_buffer
;
1072 input_line_pointer
= old_input
;
1073 buffer_limit
= old_limit
;
1085 /* Close the input file. */
1086 input_scrub_close ();
1087 #ifdef WARN_COMMENTS
1089 if (warn_comment
&& found_comment
)
1090 as_warn_where (found_comment_file
, found_comment
,
1091 "first comment found here");
1096 /* For most MRI pseudo-ops, the line actually ends at the first
1097 nonquoted space. This function looks for that point, stuffs a null
1098 in, and sets *STOPCP to the character that used to be there, and
1099 returns the location.
1101 Until I hear otherwise, I am going to assume that this is only true
1102 for the m68k MRI assembler. */
1105 mri_comment_field (stopcp
)
1112 know (flag_m68k_mri
);
1114 for (s
= input_line_pointer
;
1115 ((!is_end_of_line
[(unsigned char) *s
] && *s
!= ' ' && *s
!= '\t')
1123 for (s
= input_line_pointer
;
1124 !is_end_of_line
[(unsigned char) *s
];
1134 /* Skip to the end of an MRI comment field. */
1137 mri_comment_end (stop
, stopc
)
1143 input_line_pointer
= stop
;
1145 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
1146 ++input_line_pointer
;
1151 int ignore ATTRIBUTE_UNUSED
;
1153 as_fatal (_(".abort detected. Abandoning ship."));
1156 /* Guts of .align directive. N is the power of two to which to align.
1157 FILL may be NULL, or it may point to the bytes of the fill pattern.
1158 LEN is the length of whatever FILL points to, if anything. MAX is
1159 the maximum number of characters to skip when doing the alignment,
1160 or 0 if there is no maximum. */
1163 do_align (n
, fill
, len
, max
)
1169 if (now_seg
== absolute_section
)
1173 if (*fill
++ != '\0')
1175 as_warn (_("ignoring fill value in absolute section"));
1183 md_do_align (n
, fill
, len
, max
, just_record_alignment
);
1186 /* Only make a frag if we HAVE to... */
1187 if (n
!= 0 && !need_pass_2
)
1191 if (subseg_text_p (now_seg
))
1192 frag_align_code (n
, max
);
1194 frag_align (n
, 0, max
);
1197 frag_align (n
, *fill
, max
);
1199 frag_align_pattern (n
, fill
, len
, max
);
1203 just_record_alignment
: ATTRIBUTE_UNUSED_LABEL
1206 record_alignment (now_seg
, n
- OCTETS_PER_BYTE_POWER
);
1209 /* Handle the .align pseudo-op. A positive ARG is a default alignment
1210 (in bytes). A negative ARG is the negative of the length of the
1211 fill pattern. BYTES_P is non-zero if the alignment value should be
1212 interpreted as the byte boundary, rather than the power of 2. */
1215 s_align (arg
, bytes_p
)
1219 register unsigned int align
;
1227 stop
= mri_comment_field (&stopc
);
1229 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
1234 align
= arg
; /* Default value from pseudo-op table. */
1238 align
= get_absolute_expression ();
1244 /* Convert to a power of 2. */
1249 for (i
= 0; (align
& 1) == 0; align
>>= 1, ++i
)
1252 as_bad (_("alignment not a power of 2"));
1261 as_warn (_("alignment too large: %u assumed"), align
);
1264 if (*input_line_pointer
!= ',')
1271 ++input_line_pointer
;
1272 if (*input_line_pointer
== ',')
1276 fill
= get_absolute_expression ();
1281 if (*input_line_pointer
!= ',')
1285 ++input_line_pointer
;
1286 max
= get_absolute_expression ();
1293 as_warn (_("expected fill pattern missing"));
1294 do_align (align
, (char *) NULL
, 0, max
);
1309 do_align (align
, &fill_char
, fill_len
, max
);
1315 if ((size_t) fill_len
> sizeof ab
)
1317 md_number_to_chars (ab
, fill
, fill_len
);
1318 do_align (align
, ab
, fill_len
, max
);
1322 demand_empty_rest_of_line ();
1325 mri_comment_end (stop
, stopc
);
1328 /* Handle the .align pseudo-op on machines where ".align 4" means
1329 align to a 4 byte boundary. */
1338 /* Handle the .align pseudo-op on machines where ".align 4" means align
1339 to a 2**4 boundary. */
1350 int ignore ATTRIBUTE_UNUSED
;
1352 register char *name
;
1356 register symbolS
*symbolP
;
1361 stop
= mri_comment_field (&stopc
);
1363 name
= input_line_pointer
;
1364 c
= get_symbol_end ();
1365 /* Just after name is now '\0'. */
1366 p
= input_line_pointer
;
1371 as_bad (_("expected symbol name"));
1372 discard_rest_of_line ();
1378 if (*input_line_pointer
!= ',')
1381 as_bad (_("expected comma after \"%s\""), name
);
1383 ignore_rest_of_line ();
1385 mri_comment_end (stop
, stopc
);
1389 input_line_pointer
++; /* skip ',' */
1391 if ((temp
= get_absolute_expression ()) < 0)
1393 as_warn (_(".COMMon length (%ld) < 0 ignored"), (long) temp
);
1394 ignore_rest_of_line ();
1396 mri_comment_end (stop
, stopc
);
1401 symbolP
= symbol_find_or_make (name
);
1404 if (S_IS_DEFINED (symbolP
) && !S_IS_COMMON (symbolP
))
1406 as_bad (_("symbol `%s' is already defined"),
1407 S_GET_NAME (symbolP
));
1408 ignore_rest_of_line ();
1410 mri_comment_end (stop
, stopc
);
1414 if (S_GET_VALUE (symbolP
))
1416 if (S_GET_VALUE (symbolP
) != (valueT
) temp
)
1417 as_bad (_("length of .comm \"%s\" is already %ld; not changing to %ld"),
1418 S_GET_NAME (symbolP
),
1419 (long) S_GET_VALUE (symbolP
),
1424 S_SET_VALUE (symbolP
, (valueT
) temp
);
1425 S_SET_EXTERNAL (symbolP
);
1429 extern int flag_one
;
1430 if (!temp
|| !flag_one
)
1431 S_GET_OTHER(symbolP
) = const_flag
;
1433 #endif /* not OBJ_VMS */
1434 know (symbolP
->sy_frag
== &zero_address_frag
);
1436 demand_empty_rest_of_line ();
1439 mri_comment_end (stop
, stopc
);
1442 /* The MRI COMMON pseudo-op. We handle this by creating a common
1443 symbol with the appropriate name. We make s_space do the right
1444 thing by increasing the size. */
1447 s_mri_common (small
)
1448 int small ATTRIBUTE_UNUSED
;
1464 stop
= mri_comment_field (&stopc
);
1468 name
= input_line_pointer
;
1469 if (!ISDIGIT (*name
))
1470 c
= get_symbol_end ();
1475 ++input_line_pointer
;
1477 while (ISDIGIT (*input_line_pointer
));
1479 c
= *input_line_pointer
;
1480 *input_line_pointer
= '\0';
1482 if (line_label
!= NULL
)
1484 alc
= (char *) xmalloc (strlen (S_GET_NAME (line_label
))
1485 + (input_line_pointer
- name
)
1487 sprintf (alc
, "%s%s", name
, S_GET_NAME (line_label
));
1492 sym
= symbol_find_or_make (name
);
1493 *input_line_pointer
= c
;
1497 if (*input_line_pointer
!= ',')
1501 ++input_line_pointer
;
1502 align
= get_absolute_expression ();
1505 if (S_IS_DEFINED (sym
) && !S_IS_COMMON (sym
))
1507 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym
));
1508 ignore_rest_of_line ();
1509 mri_comment_end (stop
, stopc
);
1513 S_SET_EXTERNAL (sym
);
1514 mri_common_symbol
= sym
;
1518 S_SET_ALIGN (sym
, align
);
1521 if (line_label
!= NULL
)
1524 exp
.X_op
= O_symbol
;
1525 exp
.X_add_symbol
= sym
;
1526 exp
.X_add_number
= 0;
1527 symbol_set_value_expression (line_label
, &exp
);
1528 symbol_set_frag (line_label
, &zero_address_frag
);
1529 S_SET_SEGMENT (line_label
, expr_section
);
1532 /* FIXME: We just ignore the small argument, which distinguishes
1533 COMMON and COMMON.S. I don't know what we can do about it. */
1535 /* Ignore the type and hptype. */
1536 if (*input_line_pointer
== ',')
1537 input_line_pointer
+= 2;
1538 if (*input_line_pointer
== ',')
1539 input_line_pointer
+= 2;
1541 demand_empty_rest_of_line ();
1543 mri_comment_end (stop
, stopc
);
1548 int ignore ATTRIBUTE_UNUSED
;
1553 temp
= get_absolute_expression ();
1554 if (flag_readonly_data_in_text
)
1556 section
= text_section
;
1560 section
= data_section
;
1562 subseg_set (section
, (subsegT
) temp
);
1567 demand_empty_rest_of_line ();
1570 /* Handle the .appfile pseudo-op. This is automatically generated by
1571 do_scrub_chars when a preprocessor # line comment is seen with a
1572 file name. This default definition may be overridden by the object
1573 or CPU specific pseudo-ops. This function is also the default
1574 definition for .file; the APPFILE argument is 1 for .appfile, 0 for
1578 s_app_file_string (file
)
1583 listing_source_file (file
);
1585 register_dependency (file
);
1587 obj_app_file (file
);
1592 s_app_file (appfile
)
1598 /* Some assemblers tolerate immediately following '"'. */
1599 if ((s
= demand_copy_string (&length
)) != 0)
1601 /* If this is a fake .appfile, a fake newline was inserted into
1602 the buffer. Passing -2 to new_logical_line tells it to
1605 = (!new_logical_line (s
, appfile
? -2 : -1) && appfile
);
1607 /* In MRI mode, the preprocessor may have inserted an extraneous
1610 && *input_line_pointer
== '\''
1611 && is_end_of_line
[(unsigned char) input_line_pointer
[1]])
1612 ++input_line_pointer
;
1614 demand_empty_rest_of_line ();
1616 s_app_file_string (s
);
1620 /* Handle the .appline pseudo-op. This is automatically generated by
1621 do_scrub_chars when a preprocessor # line comment is seen. This
1622 default definition may be overridden by the object or CPU specific
1627 int ignore ATTRIBUTE_UNUSED
;
1631 /* The given number is that of the next line. */
1632 l
= get_absolute_expression () - 1;
1634 /* Some of the back ends can't deal with non-positive line numbers.
1635 Besides, it's silly. */
1636 as_warn (_("line numbers must be positive; line number %d rejected"),
1640 new_logical_line ((char *) NULL
, l
);
1643 listing_source_line (l
);
1646 demand_empty_rest_of_line ();
1649 /* Handle the .end pseudo-op. Actually, the real work is done in
1650 read_a_source_file. */
1654 int ignore ATTRIBUTE_UNUSED
;
1658 /* The MRI assembler permits the start symbol to follow .end,
1659 but we don't support that. */
1661 if (!is_end_of_line
[(unsigned char) *input_line_pointer
]
1662 && *input_line_pointer
!= '*'
1663 && *input_line_pointer
!= '!')
1664 as_warn (_("start address not supported"));
1668 /* Handle the .err pseudo-op. */
1672 int ignore ATTRIBUTE_UNUSED
;
1674 as_bad (_(".err encountered"));
1675 demand_empty_rest_of_line ();
1678 /* Handle the MRI fail pseudo-op. */
1682 int ignore ATTRIBUTE_UNUSED
;
1689 stop
= mri_comment_field (&stopc
);
1691 temp
= get_absolute_expression ();
1693 as_warn (_(".fail %ld encountered"), (long) temp
);
1695 as_bad (_(".fail %ld encountered"), (long) temp
);
1697 demand_empty_rest_of_line ();
1700 mri_comment_end (stop
, stopc
);
1705 int ignore ATTRIBUTE_UNUSED
;
1707 expressionS rep_exp
;
1709 register long fill
= 0;
1712 #ifdef md_flush_pending_output
1713 md_flush_pending_output ();
1716 get_known_segmented_expression (&rep_exp
);
1717 if (*input_line_pointer
== ',')
1719 input_line_pointer
++;
1720 size
= get_absolute_expression ();
1721 if (*input_line_pointer
== ',')
1723 input_line_pointer
++;
1724 fill
= get_absolute_expression ();
1728 /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
1729 #define BSD_FILL_SIZE_CROCK_8 (8)
1730 if (size
> BSD_FILL_SIZE_CROCK_8
)
1732 as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8
);
1733 size
= BSD_FILL_SIZE_CROCK_8
;
1737 as_warn (_("size negative; .fill ignored"));
1740 else if (rep_exp
.X_op
== O_constant
&& rep_exp
.X_add_number
<= 0)
1742 if (rep_exp
.X_add_number
< 0)
1743 as_warn (_("repeat < 0; .fill ignored"));
1747 if (size
&& !need_pass_2
)
1749 if (rep_exp
.X_op
== O_constant
)
1751 p
= frag_var (rs_fill
, (int) size
, (int) size
,
1752 (relax_substateT
) 0, (symbolS
*) 0,
1753 (offsetT
) rep_exp
.X_add_number
,
1758 /* We don't have a constant repeat count, so we can't use
1759 rs_fill. We can get the same results out of rs_space,
1760 but its argument is in bytes, so we must multiply the
1761 repeat count by size. */
1764 rep_sym
= make_expr_symbol (&rep_exp
);
1767 expressionS size_exp
;
1768 size_exp
.X_op
= O_constant
;
1769 size_exp
.X_add_number
= size
;
1771 rep_exp
.X_op
= O_multiply
;
1772 rep_exp
.X_add_symbol
= rep_sym
;
1773 rep_exp
.X_op_symbol
= make_expr_symbol (&size_exp
);
1774 rep_exp
.X_add_number
= 0;
1775 rep_sym
= make_expr_symbol (&rep_exp
);
1778 p
= frag_var (rs_space
, (int) size
, (int) size
,
1779 (relax_substateT
) 0, rep_sym
, (offsetT
) 0, (char *) 0);
1782 memset (p
, 0, (unsigned int) size
);
1784 /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
1785 flavoured AS. The following bizarre behaviour is to be
1786 compatible with above. I guess they tried to take up to 8
1787 bytes from a 4-byte expression and they forgot to sign
1789 #define BSD_FILL_SIZE_CROCK_4 (4)
1790 md_number_to_chars (p
, (valueT
) fill
,
1791 (size
> BSD_FILL_SIZE_CROCK_4
1792 ? BSD_FILL_SIZE_CROCK_4
1794 /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
1795 but emits no error message because it seems a legal thing to do.
1796 It is a degenerate case of .fill but could be emitted by a
1799 demand_empty_rest_of_line ();
1804 int ignore ATTRIBUTE_UNUSED
;
1813 stop
= mri_comment_field (&stopc
);
1817 name
= input_line_pointer
;
1818 c
= get_symbol_end ();
1819 symbolP
= symbol_find_or_make (name
);
1820 S_SET_EXTERNAL (symbolP
);
1822 *input_line_pointer
= c
;
1824 c
= *input_line_pointer
;
1827 input_line_pointer
++;
1829 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
1835 demand_empty_rest_of_line ();
1838 mri_comment_end (stop
, stopc
);
1841 /* Handle the MRI IRP and IRPC pseudo-ops. */
1853 as_where (&file
, &line
);
1856 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
1857 sb_add_char (&s
, *input_line_pointer
++);
1861 err
= expand_irp (irpc
, 0, &s
, &out
, get_line_sb
);
1863 as_bad_where (file
, line
, "%s", err
);
1867 input_scrub_include_sb (&out
, input_line_pointer
, 1);
1869 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
1872 /* Handle the .linkonce pseudo-op. This tells the assembler to mark
1873 the section to only be linked once. However, this is not supported
1874 by most object file formats. This takes an optional argument,
1875 which is what to do about duplicates. */
1879 int ignore ATTRIBUTE_UNUSED
;
1881 enum linkonce_type type
;
1885 type
= LINKONCE_DISCARD
;
1887 if (!is_end_of_line
[(unsigned char) *input_line_pointer
])
1892 s
= input_line_pointer
;
1893 c
= get_symbol_end ();
1894 if (strcasecmp (s
, "discard") == 0)
1895 type
= LINKONCE_DISCARD
;
1896 else if (strcasecmp (s
, "one_only") == 0)
1897 type
= LINKONCE_ONE_ONLY
;
1898 else if (strcasecmp (s
, "same_size") == 0)
1899 type
= LINKONCE_SAME_SIZE
;
1900 else if (strcasecmp (s
, "same_contents") == 0)
1901 type
= LINKONCE_SAME_CONTENTS
;
1903 as_warn (_("unrecognized .linkonce type `%s'"), s
);
1905 *input_line_pointer
= c
;
1908 #ifdef obj_handle_link_once
1909 obj_handle_link_once (type
);
1910 #else /* ! defined (obj_handle_link_once) */
1911 #ifdef BFD_ASSEMBLER
1915 if ((bfd_applicable_section_flags (stdoutput
) & SEC_LINK_ONCE
) == 0)
1916 as_warn (_(".linkonce is not supported for this object file format"));
1918 flags
= bfd_get_section_flags (stdoutput
, now_seg
);
1919 flags
|= SEC_LINK_ONCE
;
1924 case LINKONCE_DISCARD
:
1925 flags
|= SEC_LINK_DUPLICATES_DISCARD
;
1927 case LINKONCE_ONE_ONLY
:
1928 flags
|= SEC_LINK_DUPLICATES_ONE_ONLY
;
1930 case LINKONCE_SAME_SIZE
:
1931 flags
|= SEC_LINK_DUPLICATES_SAME_SIZE
;
1933 case LINKONCE_SAME_CONTENTS
:
1934 flags
|= SEC_LINK_DUPLICATES_SAME_CONTENTS
;
1937 if (!bfd_set_section_flags (stdoutput
, now_seg
, flags
))
1938 as_bad (_("bfd_set_section_flags: %s"),
1939 bfd_errmsg (bfd_get_error ()));
1941 #else /* ! defined (BFD_ASSEMBLER) */
1942 as_warn (_(".linkonce is not supported for this object file format"));
1943 #endif /* ! defined (BFD_ASSEMBLER) */
1944 #endif /* ! defined (obj_handle_link_once) */
1946 demand_empty_rest_of_line ();
1950 s_lcomm_internal (needs_align
, bytes_p
)
1951 /* 1 if this was a ".bss" directive, which may require a 3rd argument
1952 (alignment); 0 if it was an ".lcomm" (2 args only). */
1954 /* 1 if the alignment value should be interpreted as the byte boundary,
1955 rather than the power of 2. */
1958 register char *name
;
1962 register symbolS
*symbolP
;
1963 segT current_seg
= now_seg
;
1964 subsegT current_subseg
= now_subseg
;
1965 const int max_alignment
= 15;
1967 segT bss_seg
= bss_section
;
1969 name
= input_line_pointer
;
1970 c
= get_symbol_end ();
1971 p
= input_line_pointer
;
1976 as_bad (_("expected symbol name"));
1977 discard_rest_of_line ();
1983 /* Accept an optional comma after the name. The comma used to be
1984 required, but Irix 5 cc does not generate it. */
1985 if (*input_line_pointer
== ',')
1987 ++input_line_pointer
;
1991 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
1993 as_bad (_("missing size expression"));
1997 if ((temp
= get_absolute_expression ()) < 0)
1999 as_warn (_("BSS length (%d) < 0 ignored"), temp
);
2000 ignore_rest_of_line ();
2004 #if defined (TC_MIPS) || defined (TC_ALPHA)
2005 if (OUTPUT_FLAVOR
== bfd_target_ecoff_flavour
2006 || OUTPUT_FLAVOR
== bfd_target_elf_flavour
)
2008 /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */
2009 if ((unsigned) temp
<= bfd_get_gp_size (stdoutput
))
2011 bss_seg
= subseg_new (".sbss", 1);
2012 seg_info (bss_seg
)->bss
= 1;
2013 #ifdef BFD_ASSEMBLER
2014 if (!bfd_set_section_flags (stdoutput
, bss_seg
, SEC_ALLOC
))
2015 as_warn (_("error setting flags for \".sbss\": %s"),
2016 bfd_errmsg (bfd_get_error ()));
2024 TC_IMPLICIT_LCOMM_ALIGNMENT (temp
, align
);
2026 /* Still zero unless TC_IMPLICIT_LCOMM_ALIGNMENT set it. */
2028 record_alignment (bss_seg
, align
);
2036 if (*input_line_pointer
!= ',')
2038 as_bad (_("expected comma after size"));
2039 ignore_rest_of_line ();
2043 input_line_pointer
++;
2046 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
2048 as_bad (_("missing alignment"));
2052 align
= get_absolute_expression ();
2056 /* Convert to a power of 2. */
2061 for (i
= 0; (align
& 1) == 0; align
>>= 1, ++i
)
2064 as_bad (_("alignment not a power of 2"));
2069 if (align
> max_alignment
)
2071 align
= max_alignment
;
2072 as_warn (_("alignment too large; %d assumed"), align
);
2077 as_warn (_("alignment negative; 0 assumed"));
2080 record_alignment (bss_seg
, align
);
2084 /* Assume some objects may require alignment on some systems. */
2085 #if defined (TC_ALPHA) && ! defined (VMS)
2088 align
= ffs (temp
) - 1;
2089 if (temp
% (1 << align
))
2096 symbolP
= symbol_find_or_make (name
);
2100 #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) \
2101 || defined (OBJ_BOUT) || defined (OBJ_MAYBE_BOUT))
2102 #ifdef BFD_ASSEMBLER
2103 (OUTPUT_FLAVOR
!= bfd_target_aout_flavour
2104 || (S_GET_OTHER (symbolP
) == 0 && S_GET_DESC (symbolP
) == 0)) &&
2106 (S_GET_OTHER (symbolP
) == 0 && S_GET_DESC (symbolP
) == 0) &&
2109 (S_GET_SEGMENT (symbolP
) == bss_seg
2110 || (!S_IS_DEFINED (symbolP
) && S_GET_VALUE (symbolP
) == 0)))
2114 subseg_set (bss_seg
, 1);
2117 frag_align (align
, 0, 0);
2119 /* Detach from old frag. */
2120 if (S_GET_SEGMENT (symbolP
) == bss_seg
)
2121 symbol_get_frag (symbolP
)->fr_symbol
= NULL
;
2123 symbol_set_frag (symbolP
, frag_now
);
2124 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, symbolP
,
2125 (offsetT
) temp
, (char *) 0);
2128 S_SET_SEGMENT (symbolP
, bss_seg
);
2131 /* The symbol may already have been created with a preceding
2132 ".globl" directive -- be careful not to step on storage class
2133 in that case. Otherwise, set it to static. */
2134 if (S_GET_STORAGE_CLASS (symbolP
) != C_EXT
)
2136 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
2138 #endif /* OBJ_COFF */
2141 S_SET_SIZE (symbolP
, temp
);
2145 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP
));
2147 subseg_set (current_seg
, current_subseg
);
2149 demand_empty_rest_of_line ();
2153 s_lcomm (needs_align
)
2156 s_lcomm_internal (needs_align
, 0);
2160 s_lcomm_bytes (needs_align
)
2163 s_lcomm_internal (needs_align
, 1);
2168 int ignore ATTRIBUTE_UNUSED
;
2170 register char *name
;
2174 register symbolS
*symbolP
;
2176 /* We permit ANY defined expression: BSD4.2 demands constants. */
2177 name
= input_line_pointer
;
2178 c
= get_symbol_end ();
2179 p
= input_line_pointer
;
2184 as_bad (_("expected symbol name"));
2185 discard_rest_of_line ();
2191 if (*input_line_pointer
!= ',')
2194 as_bad (_("expected comma after \"%s\""), name
);
2196 ignore_rest_of_line ();
2200 input_line_pointer
++;
2203 if (exp
.X_op
!= O_constant
2204 && exp
.X_op
!= O_register
)
2206 as_bad (_("bad expression"));
2207 ignore_rest_of_line ();
2212 symbolP
= symbol_find_or_make (name
);
2214 /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 &&
2215 symbolP->sy_desc == 0) out of this test because coff doesn't have
2216 those fields, and I can't see when they'd ever be tripped. I
2217 don't think I understand why they were here so I may have
2218 introduced a bug. As recently as 1.37 didn't have this test
2219 anyway. xoxorich. */
2221 if (S_GET_SEGMENT (symbolP
) == undefined_section
2222 && S_GET_VALUE (symbolP
) == 0)
2224 /* The name might be an undefined .global symbol; be sure to
2225 keep the "external" bit. */
2226 S_SET_SEGMENT (symbolP
,
2227 (exp
.X_op
== O_constant
2230 S_SET_VALUE (symbolP
, (valueT
) exp
.X_add_number
);
2234 as_bad (_("symbol `%s' is already defined"), name
);
2238 demand_empty_rest_of_line ();
2241 /* Read a line into an sb. Returns the character that ended the line
2242 or zero if there are no more lines. */
2248 char quote1
, quote2
, inquote
;
2251 if (input_line_pointer
[-1] == '\n')
2252 bump_line_counters ();
2254 if (input_line_pointer
>= buffer_limit
)
2256 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2257 if (buffer_limit
== 0)
2261 /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this
2262 code needs to be changed. */
2271 #ifdef LEX_IS_STRINGQUOTE
2277 while ((c
= * input_line_pointer
++) != 0
2278 && (!is_end_of_line
[c
]
2279 || (inquote
!= '\0' && c
!= '\n')))
2283 else if (inquote
== '\0')
2287 else if (c
== quote2
)
2291 sb_add_char (line
, c
);
2294 /* Don't skip multiple end-of-line characters, because that breaks support
2295 for the IA-64 stop bit (;;) which looks like two consecutive end-of-line
2296 characters but isn't. Instead just skip one end of line character and
2297 return the character skipped so that the caller can re-insert it if
2302 /* Define a macro. This is an interface to macro.c. */
2306 int ignore ATTRIBUTE_UNUSED
;
2315 as_where (&file
, &line
);
2318 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
2319 sb_add_char (&s
, *input_line_pointer
++);
2322 if (line_label
!= NULL
)
2323 sb_add_string (&label
, S_GET_NAME (line_label
));
2325 err
= define_macro (0, &s
, &label
, get_line_sb
, &name
);
2327 as_bad_where (file
, line
, "%s", err
);
2330 if (line_label
!= NULL
)
2332 S_SET_SEGMENT (line_label
, undefined_section
);
2333 S_SET_VALUE (line_label
, 0);
2334 symbol_set_frag (line_label
, &zero_address_frag
);
2337 if (((NO_PSEUDO_DOT
|| flag_m68k_mri
)
2338 && hash_find (po_hash
, name
) != NULL
)
2341 && hash_find (po_hash
, name
+ 1) != NULL
))
2342 as_warn (_("attempt to redefine pseudo-op `%s' ignored"),
2349 /* Handle the .mexit pseudo-op, which immediately exits a macro
2354 int ignore ATTRIBUTE_UNUSED
;
2356 cond_exit_macro (macro_nest
);
2357 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2360 /* Switch in and out of MRI mode. */
2364 int ignore ATTRIBUTE_UNUSED
;
2368 on
= get_absolute_expression ();
2369 old_flag
= flag_mri
;
2387 /* Operator precedence changes in m68k MRI mode, so we need to
2388 update the operator rankings. */
2389 expr_set_precedence ();
2391 #ifdef MRI_MODE_CHANGE
2393 MRI_MODE_CHANGE (on
);
2396 demand_empty_rest_of_line ();
2399 /* Handle changing the location counter. */
2402 do_org (segment
, exp
, fill
)
2407 if (segment
!= now_seg
&& segment
!= absolute_section
)
2408 as_bad (_("invalid segment \"%s\""), segment_name (segment
));
2410 if (now_seg
== absolute_section
)
2413 as_warn (_("ignoring fill value in absolute section"));
2414 if (exp
->X_op
!= O_constant
)
2416 as_bad (_("only constant offsets supported in absolute section"));
2417 exp
->X_add_number
= 0;
2419 abs_section_offset
= exp
->X_add_number
;
2424 symbolS
*sym
= exp
->X_add_symbol
;
2425 offsetT off
= exp
->X_add_number
* OCTETS_PER_BYTE
;
2427 if (exp
->X_op
!= O_constant
&& exp
->X_op
!= O_symbol
)
2429 /* Handle complex expressions. */
2430 sym
= make_expr_symbol (exp
);
2434 p
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, sym
, off
, (char *) 0);
2441 int ignore ATTRIBUTE_UNUSED
;
2443 register segT segment
;
2445 register long temp_fill
;
2447 #ifdef md_flush_pending_output
2448 md_flush_pending_output ();
2451 /* The m68k MRI assembler has a different meaning for .org. It
2452 means to create an absolute section at a given address. We can't
2453 support that--use a linker script instead. */
2456 as_bad (_("MRI style ORG pseudo-op not supported"));
2457 ignore_rest_of_line ();
2461 /* Don't believe the documentation of BSD 4.2 AS. There is no such
2462 thing as a sub-segment-relative origin. Any absolute origin is
2463 given a warning, then assumed to be segment-relative. Any
2464 segmented origin expression ("foo+42") had better be in the right
2465 segment or the .org is ignored.
2467 BSD 4.2 AS warns if you try to .org backwards. We cannot because
2468 we never know sub-segment sizes when we are reading code. BSD
2469 will crash trying to emit negative numbers of filler bytes in
2470 certain .orgs. We don't crash, but see as-write for that code.
2472 Don't make frag if need_pass_2==1. */
2473 segment
= get_known_segmented_expression (&exp
);
2474 if (*input_line_pointer
== ',')
2476 input_line_pointer
++;
2477 temp_fill
= get_absolute_expression ();
2483 do_org (segment
, &exp
, temp_fill
);
2485 demand_empty_rest_of_line ();
2488 /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be
2489 called by the obj-format routine which handles section changing
2490 when in MRI mode. It will create a new section, and return it. It
2491 will set *TYPE to the section type: one of 'C' (code), 'D' (data),
2492 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the
2493 flags will be set in the section. */
2497 char *type ATTRIBUTE_UNUSED
;
2507 name
= input_line_pointer
;
2508 if (!ISDIGIT (*name
))
2509 c
= get_symbol_end ();
2514 ++input_line_pointer
;
2516 while (ISDIGIT (*input_line_pointer
));
2518 c
= *input_line_pointer
;
2519 *input_line_pointer
= '\0';
2522 name
= xstrdup (name
);
2524 *input_line_pointer
= c
;
2526 seg
= subseg_new (name
, 0);
2528 if (*input_line_pointer
== ',')
2532 ++input_line_pointer
;
2533 align
= get_absolute_expression ();
2534 record_alignment (seg
, align
);
2538 if (*input_line_pointer
== ',')
2540 c
= *++input_line_pointer
;
2542 if (c
== 'C' || c
== 'D' || c
== 'M' || c
== 'R')
2545 as_bad (_("unrecognized section type"));
2546 ++input_line_pointer
;
2548 #ifdef BFD_ASSEMBLER
2552 flags
= SEC_NO_FLAGS
;
2554 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_CODE
;
2555 else if (*type
== 'D' || *type
== 'M')
2556 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_DATA
;
2557 else if (*type
== 'R')
2558 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_READONLY
| SEC_ROM
;
2559 if (flags
!= SEC_NO_FLAGS
)
2561 if (!bfd_set_section_flags (stdoutput
, seg
, flags
))
2562 as_warn (_("error setting flags for \"%s\": %s"),
2563 bfd_section_name (stdoutput
, seg
),
2564 bfd_errmsg (bfd_get_error ()));
2570 /* Ignore the HP type. */
2571 if (*input_line_pointer
== ',')
2572 input_line_pointer
+= 2;
2574 demand_empty_rest_of_line ();
2576 #else /* ! TC_M68K */
2585 name
= input_line_pointer
;
2586 c
= get_symbol_end ();
2588 name
= xstrdup (name
);
2590 *input_line_pointer
= c
;
2592 seg
= subseg_new (name
, 0);
2594 if (*input_line_pointer
!= ',')
2600 ++input_line_pointer
;
2602 sectype
= input_line_pointer
;
2603 c
= get_symbol_end ();
2604 if (*sectype
== '\0')
2606 else if (strcasecmp (sectype
, "text") == 0)
2608 else if (strcasecmp (sectype
, "data") == 0)
2610 else if (strcasecmp (sectype
, "romdata") == 0)
2613 as_warn (_("unrecognized section type `%s'"), sectype
);
2614 *input_line_pointer
= c
;
2617 if (*input_line_pointer
== ',')
2621 ++input_line_pointer
;
2623 seccmd
= input_line_pointer
;
2624 c
= get_symbol_end ();
2625 if (strcasecmp (seccmd
, "absolute") == 0)
2627 as_bad (_("absolute sections are not supported"));
2628 *input_line_pointer
= c
;
2629 ignore_rest_of_line ();
2632 else if (strcasecmp (seccmd
, "align") == 0)
2636 *input_line_pointer
= c
;
2637 align
= get_absolute_expression ();
2638 record_alignment (seg
, align
);
2642 as_warn (_("unrecognized section command `%s'"), seccmd
);
2643 *input_line_pointer
= c
;
2647 demand_empty_rest_of_line ();
2649 #else /* ! TC_I960 */
2650 /* The MRI assembler seems to use different forms of .sect for
2651 different targets. */
2652 as_bad ("MRI mode not supported for this target");
2653 ignore_rest_of_line ();
2654 #endif /* ! TC_I960 */
2655 #endif /* ! TC_M68K */
2658 /* Handle the .print pseudo-op. */
2662 int ignore ATTRIBUTE_UNUSED
;
2667 s
= demand_copy_C_string (&len
);
2669 demand_empty_rest_of_line ();
2672 /* Handle the .purgem pseudo-op. */
2676 int ignore ATTRIBUTE_UNUSED
;
2678 if (is_it_end_of_statement ())
2680 demand_empty_rest_of_line ();
2690 name
= input_line_pointer
;
2691 c
= get_symbol_end ();
2692 delete_macro (name
);
2693 *input_line_pointer
= c
;
2696 while (*input_line_pointer
++ == ',');
2698 --input_line_pointer
;
2699 demand_empty_rest_of_line ();
2702 /* Handle the .rept pseudo-op. */
2706 int ignore ATTRIBUTE_UNUSED
;
2708 as_warn (_(".endr encountered without preceeding .rept, .irc, or .irp"));
2709 demand_empty_rest_of_line ();
2712 /* Handle the .rept pseudo-op. */
2716 int ignore ATTRIBUTE_UNUSED
;
2720 count
= get_absolute_expression ();
2722 do_repeat (count
, "REPT", "ENDR");
2725 /* This function provides a generic repeat block implementation. It allows
2726 different directives to be used as the start/end keys. */
2729 do_repeat (count
, start
, end
)
2738 if (!buffer_and_nest (start
, end
, &one
, get_line_sb
))
2740 as_bad (_("%s without %s"), start
, end
);
2746 sb_add_sb (&many
, &one
);
2750 input_scrub_include_sb (&many
, input_line_pointer
, 1);
2752 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2755 /* Skip to end of current repeat loop; EXTRA indicates how many additional
2756 input buffers to skip. Assumes that conditionals preceding the loop end
2757 are properly nested.
2759 This function makes it easier to implement a premature "break" out of the
2760 loop. The EXTRA arg accounts for other buffers we might have inserted,
2761 such as line substitutions. */
2767 cond_exit_macro (macro_nest
);
2768 while (extra
-- >= 0)
2769 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2772 /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then
2773 this is .equiv, and it is an error if the symbol is already
2780 register char *name
;
2781 register char delim
;
2782 register char *end_name
;
2783 register symbolS
*symbolP
;
2785 /* Especial apologies for the random logic:
2786 this just grew, and could be parsed much more simply!
2788 name
= input_line_pointer
;
2789 delim
= get_symbol_end ();
2790 end_name
= input_line_pointer
;
2793 if (name
== end_name
)
2795 as_bad (_("expected symbol name"));
2796 discard_rest_of_line ();
2802 if (*input_line_pointer
!= ',')
2805 as_bad (_("expected comma after \"%s\""), name
);
2807 ignore_rest_of_line ();
2811 input_line_pointer
++;
2814 if (name
[0] == '.' && name
[1] == '\0')
2816 /* Turn '. = mumble' into a .org mumble. */
2817 register segT segment
;
2820 segment
= get_known_segmented_expression (&exp
);
2823 do_org (segment
, &exp
, 0);
2829 if ((symbolP
= symbol_find (name
)) == NULL
2830 && (symbolP
= md_undefined_symbol (name
)) == NULL
)
2833 /* When doing symbol listings, play games with dummy fragments living
2834 outside the normal fragment chain to record the file and line info
2836 if (listing
& LISTING_SYMBOLS
)
2838 extern struct list_info_struct
*listing_tail
;
2839 fragS
*dummy_frag
= (fragS
*) xmalloc (sizeof (fragS
));
2840 memset (dummy_frag
, 0, sizeof (fragS
));
2841 dummy_frag
->fr_type
= rs_fill
;
2842 dummy_frag
->line
= listing_tail
;
2843 symbolP
= symbol_new (name
, undefined_section
, 0, dummy_frag
);
2844 dummy_frag
->fr_symbol
= symbolP
;
2848 symbolP
= symbol_new (name
, undefined_section
, 0, &zero_address_frag
);
2851 /* "set" symbols are local unless otherwise specified. */
2852 SF_SET_LOCAL (symbolP
);
2853 #endif /* OBJ_COFF */
2856 symbol_table_insert (symbolP
);
2861 && S_IS_DEFINED (symbolP
)
2862 && S_GET_SEGMENT (symbolP
) != reg_section
)
2863 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP
));
2865 pseudo_set (symbolP
);
2866 demand_empty_rest_of_line ();
2880 #ifdef md_flush_pending_output
2881 md_flush_pending_output ();
2885 stop
= mri_comment_field (&stopc
);
2887 /* In m68k MRI mode, we need to align to a word boundary, unless
2889 if (flag_m68k_mri
&& mult
> 1)
2891 if (now_seg
== absolute_section
)
2893 abs_section_offset
+= abs_section_offset
& 1;
2894 if (line_label
!= NULL
)
2895 S_SET_VALUE (line_label
, abs_section_offset
);
2897 else if (mri_common_symbol
!= NULL
)
2901 val
= S_GET_VALUE (mri_common_symbol
);
2904 S_SET_VALUE (mri_common_symbol
, val
+ 1);
2905 if (line_label
!= NULL
)
2907 expressionS
*symexp
;
2909 symexp
= symbol_get_value_expression (line_label
);
2910 know (symexp
->X_op
== O_symbol
);
2911 know (symexp
->X_add_symbol
== mri_common_symbol
);
2912 symexp
->X_add_number
+= 1;
2918 do_align (1, (char *) NULL
, 0, 0);
2919 if (line_label
!= NULL
)
2921 symbol_set_frag (line_label
, frag_now
);
2922 S_SET_VALUE (line_label
, frag_now_fix ());
2932 if (*input_line_pointer
== ',')
2934 ++input_line_pointer
;
2939 val
.X_op
= O_constant
;
2940 val
.X_add_number
= 0;
2943 if (val
.X_op
!= O_constant
2944 || val
.X_add_number
< - 0x80
2945 || val
.X_add_number
> 0xff
2946 || (mult
!= 0 && mult
!= 1 && val
.X_add_number
!= 0))
2948 if (exp
.X_op
!= O_constant
)
2949 as_bad (_("unsupported variable size or fill value"));
2956 bytes
= mult
* exp
.X_add_number
;
2957 for (i
= 0; i
< exp
.X_add_number
; i
++)
2958 emit_expr (&val
, mult
);
2963 if (exp
.X_op
== O_constant
)
2967 repeat
= exp
.X_add_number
;
2974 as_warn (_(".space repeat count is zero, ignored"));
2975 else if (repeat
< 0)
2976 as_warn (_(".space repeat count is negative, ignored"));
2980 /* If we are in the absolute section, just bump the offset. */
2981 if (now_seg
== absolute_section
)
2983 abs_section_offset
+= repeat
;
2987 /* If we are secretly in an MRI common section, then
2988 creating space just increases the size of the common
2990 if (mri_common_symbol
!= NULL
)
2992 S_SET_VALUE (mri_common_symbol
,
2993 S_GET_VALUE (mri_common_symbol
) + repeat
);
2998 p
= frag_var (rs_fill
, 1, 1, (relax_substateT
) 0, (symbolS
*) 0,
2999 (offsetT
) repeat
, (char *) 0);
3003 if (now_seg
== absolute_section
)
3005 as_bad (_("space allocation too complex in absolute section"));
3006 subseg_set (text_section
, 0);
3009 if (mri_common_symbol
!= NULL
)
3011 as_bad (_("space allocation too complex in common section"));
3012 mri_common_symbol
= NULL
;
3016 p
= frag_var (rs_space
, 1, 1, (relax_substateT
) 0,
3017 make_expr_symbol (&exp
), (offsetT
) 0, (char *) 0);
3021 *p
= val
.X_add_number
;
3026 /* In MRI mode, after an odd number of bytes, we must align to an
3027 even word boundary, unless the next instruction is a dc.b, ds.b
3029 if (flag_mri
&& (bytes
& 1) != 0)
3030 mri_pending_align
= 1;
3032 demand_empty_rest_of_line ();
3035 mri_comment_end (stop
, stopc
);
3038 /* This is like s_space, but the value is a floating point number with
3039 the given precision. This is for the MRI dcb.s pseudo-op and
3043 s_float_space (float_type
)
3048 char temp
[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
];
3053 stop
= mri_comment_field (&stopc
);
3055 count
= get_absolute_expression ();
3058 if (*input_line_pointer
!= ',')
3060 as_bad (_("missing value"));
3061 ignore_rest_of_line ();
3063 mri_comment_end (stop
, stopc
);
3067 ++input_line_pointer
;
3071 /* Skip any 0{letter} that may be present. Don't even check if the
3072 * letter is legal. */
3073 if (input_line_pointer
[0] == '0'
3074 && ISALPHA (input_line_pointer
[1]))
3075 input_line_pointer
+= 2;
3077 /* Accept :xxxx, where the x's are hex digits, for a floating point
3078 with the exact digits specified. */
3079 if (input_line_pointer
[0] == ':')
3081 flen
= hex_float (float_type
, temp
);
3084 ignore_rest_of_line ();
3086 mri_comment_end (stop
, stopc
);
3094 err
= md_atof (float_type
, temp
, &flen
);
3095 know (flen
<= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
);
3099 as_bad (_("bad floating literal: %s"), err
);
3100 ignore_rest_of_line ();
3102 mri_comment_end (stop
, stopc
);
3107 while (--count
>= 0)
3111 p
= frag_more (flen
);
3112 memcpy (p
, temp
, (unsigned int) flen
);
3115 demand_empty_rest_of_line ();
3118 mri_comment_end (stop
, stopc
);
3121 /* Handle the .struct pseudo-op, as found in MIPS assemblers. */
3125 int ignore ATTRIBUTE_UNUSED
;
3131 stop
= mri_comment_field (&stopc
);
3132 abs_section_offset
= get_absolute_expression ();
3133 subseg_set (absolute_section
, 0);
3134 demand_empty_rest_of_line ();
3136 mri_comment_end (stop
, stopc
);
3141 int ignore ATTRIBUTE_UNUSED
;
3145 temp
= get_absolute_expression ();
3146 subseg_set (text_section
, (subsegT
) temp
);
3147 demand_empty_rest_of_line ();
3149 const_flag
&= ~IN_DEFAULT_SECTION
;
3154 demand_empty_rest_of_line ()
3157 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
3158 input_line_pointer
++;
3160 ignore_rest_of_line ();
3162 /* Return having already swallowed end-of-line. */
3166 ignore_rest_of_line ()
3168 /* For suspect lines: gives warning. */
3169 if (!is_end_of_line
[(unsigned char) *input_line_pointer
])
3171 if (ISPRINT (*input_line_pointer
))
3172 as_warn (_("rest of line ignored; first ignored character is `%c'"),
3173 *input_line_pointer
);
3175 as_warn (_("rest of line ignored; first ignored character valued 0x%x"),
3176 *input_line_pointer
);
3178 while (input_line_pointer
< buffer_limit
3179 && !is_end_of_line
[(unsigned char) *input_line_pointer
])
3180 input_line_pointer
++;
3183 input_line_pointer
++;
3185 /* Return pointing just after end-of-line. */
3186 know (is_end_of_line
[(unsigned char) input_line_pointer
[-1]]);
3190 discard_rest_of_line ()
3192 while (input_line_pointer
< buffer_limit
3193 && !is_end_of_line
[(unsigned char) *input_line_pointer
])
3194 input_line_pointer
++;
3196 input_line_pointer
++;
3198 /* Return pointing just after end-of-line. */
3199 know (is_end_of_line
[(unsigned char) input_line_pointer
[-1]]);
3202 /* In: Pointer to a symbol.
3203 Input_line_pointer->expression.
3205 Out: Input_line_pointer->just after any whitespace after expression.
3206 Tried to set symbol to value of expression.
3207 Will change symbols type, value, and frag; */
3210 pseudo_set (symbolP
)
3214 #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
3216 #endif /* OBJ_AOUT or OBJ_BOUT */
3218 know (symbolP
); /* NULL pointer is logic error. */
3219 #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
3220 ext
= S_IS_EXTERNAL (symbolP
);
3221 #endif /* OBJ_AOUT or OBJ_BOUT */
3223 (void) expression (&exp
);
3225 if (exp
.X_op
== O_illegal
)
3226 as_bad (_("illegal expression"));
3227 else if (exp
.X_op
== O_absent
)
3228 as_bad (_("missing expression"));
3229 else if (exp
.X_op
== O_big
)
3231 if (exp
.X_add_number
> 0)
3232 as_bad (_("bignum invalid"));
3234 as_bad (_("floating point number invalid"));
3236 else if (exp
.X_op
== O_subtract
3237 && SEG_NORMAL (S_GET_SEGMENT (exp
.X_add_symbol
))
3238 && (symbol_get_frag (exp
.X_add_symbol
)
3239 == symbol_get_frag (exp
.X_op_symbol
)))
3241 exp
.X_op
= O_constant
;
3242 exp
.X_add_number
= (S_GET_VALUE (exp
.X_add_symbol
)
3243 - S_GET_VALUE (exp
.X_op_symbol
));
3251 exp
.X_add_number
= 0;
3254 S_SET_SEGMENT (symbolP
, absolute_section
);
3255 #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
3257 S_SET_EXTERNAL (symbolP
);
3259 S_CLEAR_EXTERNAL (symbolP
);
3260 #endif /* OBJ_AOUT or OBJ_BOUT */
3261 S_SET_VALUE (symbolP
, (valueT
) exp
.X_add_number
);
3262 if (exp
.X_op
!= O_constant
)
3263 symbol_set_frag (symbolP
, &zero_address_frag
);
3267 S_SET_SEGMENT (symbolP
, reg_section
);
3268 S_SET_VALUE (symbolP
, (valueT
) exp
.X_add_number
);
3269 symbol_set_frag (symbolP
, &zero_address_frag
);
3273 if (S_GET_SEGMENT (exp
.X_add_symbol
) == undefined_section
3274 || exp
.X_add_number
!= 0)
3275 symbol_set_value_expression (symbolP
, &exp
);
3276 else if (symbol_section_p (symbolP
))
3277 as_bad ("attempt to set value of section symbol");
3280 symbolS
*s
= exp
.X_add_symbol
;
3282 S_SET_SEGMENT (symbolP
, S_GET_SEGMENT (s
));
3283 #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
3285 S_SET_EXTERNAL (symbolP
);
3287 S_CLEAR_EXTERNAL (symbolP
);
3288 #endif /* OBJ_AOUT or OBJ_BOUT */
3289 S_SET_VALUE (symbolP
,
3290 exp
.X_add_number
+ S_GET_VALUE (s
));
3291 symbol_set_frag (symbolP
, symbol_get_frag (s
));
3292 copy_symbol_attributes (symbolP
, s
);
3297 /* The value is some complex expression.
3298 FIXME: Should we set the segment to anything? */
3299 symbol_set_value_expression (symbolP
, &exp
);
3306 CONStruct more frag of .bytes, or .words etc.
3307 Should need_pass_2 be 1 then emit no frag(s).
3308 This understands EXPRESSIONS.
3312 This has a split personality. We use expression() to read the
3313 value. We can detect if the value won't fit in a byte or word.
3314 But we can't detect if expression() discarded significant digits
3315 in the case of a long. Not worth the crocks required to fix it. */
3317 /* Select a parser for cons expressions. */
3319 /* Some targets need to parse the expression in various fancy ways.
3320 You can define TC_PARSE_CONS_EXPRESSION to do whatever you like
3321 (for example, the HPPA does this). Otherwise, you can define
3322 BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or
3323 REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these
3324 are defined, which is the normal case, then only simple expressions
3329 parse_mri_cons
PARAMS ((expressionS
*exp
, unsigned int nbytes
));
3332 #ifndef TC_PARSE_CONS_EXPRESSION
3333 #ifdef BITFIELD_CONS_EXPRESSIONS
3334 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)
3336 parse_bitfield_cons
PARAMS ((expressionS
*exp
, unsigned int nbytes
));
3338 #ifdef REPEAT_CONS_EXPRESSIONS
3339 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)
3341 parse_repeat_cons
PARAMS ((expressionS
*exp
, unsigned int nbytes
));
3344 /* If we haven't gotten one yet, just call expression. */
3345 #ifndef TC_PARSE_CONS_EXPRESSION
3346 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)
3350 /* Worker to do .byte etc statements.
3351 Clobbers input_line_pointer and checks end-of-line. */
3354 cons_worker (nbytes
, rva
)
3355 register int nbytes
; /* 1=.byte, 2=.word, 4=.long. */
3363 #ifdef md_flush_pending_output
3364 md_flush_pending_output ();
3368 stop
= mri_comment_field (&stopc
);
3370 if (is_it_end_of_statement ())
3372 demand_empty_rest_of_line ();
3374 mri_comment_end (stop
, stopc
);
3378 #ifdef md_cons_align
3379 md_cons_align (nbytes
);
3387 parse_mri_cons (&exp
, (unsigned int) nbytes
);
3390 TC_PARSE_CONS_EXPRESSION (&exp
, (unsigned int) nbytes
);
3394 if (exp
.X_op
== O_symbol
)
3395 exp
.X_op
= O_symbol_rva
;
3397 as_fatal (_("rva without symbol"));
3399 emit_expr (&exp
, (unsigned int) nbytes
);
3402 while (*input_line_pointer
++ == ',');
3404 /* In MRI mode, after an odd number of bytes, we must align to an
3405 even word boundary, unless the next instruction is a dc.b, ds.b
3407 if (flag_mri
&& nbytes
== 1 && (c
& 1) != 0)
3408 mri_pending_align
= 1;
3410 input_line_pointer
--; /* Put terminator back into stream. */
3412 demand_empty_rest_of_line ();
3415 mri_comment_end (stop
, stopc
);
3422 cons_worker (size
, 0);
3429 cons_worker (size
, 1);
3432 /* Put the contents of expression EXP into the object file using
3433 NBYTES bytes. If need_pass_2 is 1, this does nothing. */
3436 emit_expr (exp
, nbytes
)
3438 unsigned int nbytes
;
3442 valueT extra_digit
= 0;
3444 /* Don't do anything if we are going to make another pass. */
3450 /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will
3451 appear as a four byte positive constant in the .line section,
3452 followed by a 2 byte 0xffff. Look for that case here. */
3454 static int dwarf_line
= -1;
3456 if (strcmp (segment_name (now_seg
), ".line") != 0)
3458 else if (dwarf_line
>= 0
3460 && exp
->X_op
== O_constant
3461 && (exp
->X_add_number
== -1 || exp
->X_add_number
== 0xffff))
3462 listing_source_line ((unsigned int) dwarf_line
);
3463 else if (nbytes
== 4
3464 && exp
->X_op
== O_constant
3465 && exp
->X_add_number
>= 0)
3466 dwarf_line
= exp
->X_add_number
;
3471 /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will
3472 appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte
3473 AT_sibling (0x12) followed by a four byte address of the sibling
3474 followed by a 2 byte AT_name (0x38) followed by the name of the
3475 file. We look for that case here. */
3477 static int dwarf_file
= 0;
3479 if (strcmp (segment_name (now_seg
), ".debug") != 0)
3481 else if (dwarf_file
== 0
3483 && exp
->X_op
== O_constant
3484 && exp
->X_add_number
== 0x11)
3486 else if (dwarf_file
== 1
3488 && exp
->X_op
== O_constant
3489 && exp
->X_add_number
== 0x12)
3491 else if (dwarf_file
== 2
3494 else if (dwarf_file
== 3
3496 && exp
->X_op
== O_constant
3497 && exp
->X_add_number
== 0x38)
3502 /* The variable dwarf_file_string tells stringer that the string
3503 may be the name of the source file. */
3504 if (dwarf_file
== 4)
3505 dwarf_file_string
= 1;
3507 dwarf_file_string
= 0;
3512 if (check_eh_frame (exp
, &nbytes
))
3517 /* Allow `.word 0' in the absolute section. */
3518 if (now_seg
== absolute_section
)
3520 if (op
!= O_constant
|| exp
->X_add_number
!= 0)
3521 as_bad (_("attempt to store value in absolute section"));
3522 abs_section_offset
+= nbytes
;
3526 /* Handle a negative bignum. */
3528 && exp
->X_add_number
== 0
3529 && symbol_get_value_expression (exp
->X_add_symbol
)->X_op
== O_big
3530 && symbol_get_value_expression (exp
->X_add_symbol
)->X_add_number
> 0)
3533 unsigned long carry
;
3535 exp
= symbol_get_value_expression (exp
->X_add_symbol
);
3537 /* Negate the bignum: one's complement each digit and add 1. */
3539 for (i
= 0; i
< exp
->X_add_number
; i
++)
3543 next
= (((~(generic_bignum
[i
] & LITTLENUM_MASK
))
3546 generic_bignum
[i
] = next
& LITTLENUM_MASK
;
3547 carry
= next
>> LITTLENUM_NUMBER_OF_BITS
;
3550 /* We can ignore any carry out, because it will be handled by
3551 extra_digit if it is needed. */
3553 extra_digit
= (valueT
) -1;
3557 if (op
== O_absent
|| op
== O_illegal
)
3559 as_warn (_("zero assumed for missing expression"));
3560 exp
->X_add_number
= 0;
3563 else if (op
== O_big
&& exp
->X_add_number
<= 0)
3565 as_bad (_("floating point number invalid"));
3566 exp
->X_add_number
= 0;
3569 else if (op
== O_register
)
3571 as_warn (_("register value used as expression"));
3575 p
= frag_more ((int) nbytes
);
3577 #ifndef WORKING_DOT_WORD
3578 /* If we have the difference of two symbols in a word, save it on
3579 the broken_words list. See the code in write.c. */
3580 if (op
== O_subtract
&& nbytes
== 2)
3582 struct broken_word
*x
;
3584 x
= (struct broken_word
*) xmalloc (sizeof (struct broken_word
));
3585 x
->next_broken_word
= broken_words
;
3588 x
->subseg
= now_subseg
;
3590 x
->word_goes_here
= p
;
3592 x
->add
= exp
->X_add_symbol
;
3593 x
->sub
= exp
->X_op_symbol
;
3594 x
->addnum
= exp
->X_add_number
;
3602 /* If we have an integer, but the number of bytes is too large to
3603 pass to md_number_to_chars, handle it as a bignum. */
3604 if (op
== O_constant
&& nbytes
> sizeof (valueT
))
3609 if (!exp
->X_unsigned
&& exp
->X_add_number
< 0)
3610 extra_digit
= (valueT
) -1;
3611 val
= (valueT
) exp
->X_add_number
;
3615 generic_bignum
[gencnt
] = val
& LITTLENUM_MASK
;
3616 val
>>= LITTLENUM_NUMBER_OF_BITS
;
3620 op
= exp
->X_op
= O_big
;
3621 exp
->X_add_number
= gencnt
;
3624 if (op
== O_constant
)
3626 register valueT get
;
3627 register valueT use
;
3628 register valueT mask
;
3630 register valueT unmask
;
3632 /* JF << of >= number of bits in the object is undefined. In
3633 particular SPARC (Sun 4) has problems. */
3634 if (nbytes
>= sizeof (valueT
))
3637 if (nbytes
> sizeof (valueT
))
3640 hibit
= (valueT
) 1 << (nbytes
* BITS_PER_CHAR
- 1);
3644 /* Don't store these bits. */
3645 mask
= ~(valueT
) 0 << (BITS_PER_CHAR
* nbytes
);
3646 hibit
= (valueT
) 1 << (nbytes
* BITS_PER_CHAR
- 1);
3649 unmask
= ~mask
; /* Do store these bits. */
3652 "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
3653 mask
= ~(unmask
>> 1); /* Includes sign bit now. */
3656 get
= exp
->X_add_number
;
3658 if ((get
& mask
) != 0
3659 && ((get
& mask
) != mask
3660 || (get
& hibit
) == 0))
3661 { /* Leading bits contain both 0s & 1s. */
3662 as_warn (_("value 0x%lx truncated to 0x%lx"),
3663 (unsigned long) get
, (unsigned long) use
);
3665 /* Put bytes in right order. */
3666 md_number_to_chars (p
, use
, (int) nbytes
);
3668 else if (op
== O_big
)
3671 LITTLENUM_TYPE
*nums
;
3673 know (nbytes
% CHARS_PER_LITTLENUM
== 0);
3675 size
= exp
->X_add_number
* CHARS_PER_LITTLENUM
;
3678 as_warn (_("bignum truncated to %d bytes"), nbytes
);
3682 if (target_big_endian
)
3684 while (nbytes
> size
)
3686 md_number_to_chars (p
, extra_digit
, CHARS_PER_LITTLENUM
);
3687 nbytes
-= CHARS_PER_LITTLENUM
;
3688 p
+= CHARS_PER_LITTLENUM
;
3691 nums
= generic_bignum
+ size
/ CHARS_PER_LITTLENUM
;
3692 while (size
>= CHARS_PER_LITTLENUM
)
3695 md_number_to_chars (p
, (valueT
) *nums
, CHARS_PER_LITTLENUM
);
3696 size
-= CHARS_PER_LITTLENUM
;
3697 p
+= CHARS_PER_LITTLENUM
;
3702 nums
= generic_bignum
;
3703 while (size
>= CHARS_PER_LITTLENUM
)
3705 md_number_to_chars (p
, (valueT
) *nums
, CHARS_PER_LITTLENUM
);
3707 size
-= CHARS_PER_LITTLENUM
;
3708 p
+= CHARS_PER_LITTLENUM
;
3709 nbytes
-= CHARS_PER_LITTLENUM
;
3712 while (nbytes
>= CHARS_PER_LITTLENUM
)
3714 md_number_to_chars (p
, extra_digit
, CHARS_PER_LITTLENUM
);
3715 nbytes
-= CHARS_PER_LITTLENUM
;
3716 p
+= CHARS_PER_LITTLENUM
;
3722 memset (p
, 0, nbytes
);
3724 /* Now we need to generate a fixS to record the symbol value.
3725 This is easy for BFD. For other targets it can be more
3726 complex. For very complex cases (currently, the HPPA and
3727 NS32K), you can define TC_CONS_FIX_NEW to do whatever you
3728 want. For simpler cases, you can define TC_CONS_RELOC to be
3729 the name of the reloc code that should be stored in the fixS.
3730 If neither is defined, the code uses NO_RELOC if it is
3731 defined, and otherwise uses 0. */
3733 #ifdef BFD_ASSEMBLER
3734 #ifdef TC_CONS_FIX_NEW
3735 TC_CONS_FIX_NEW (frag_now
, p
- frag_now
->fr_literal
, nbytes
, exp
);
3738 bfd_reloc_code_real_type r
;
3755 as_bad (_("unsupported BFD relocation size %u"), nbytes
);
3759 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
, (int) nbytes
, exp
,
3764 #ifdef TC_CONS_FIX_NEW
3765 TC_CONS_FIX_NEW (frag_now
, p
- frag_now
->fr_literal
, nbytes
, exp
);
3767 /* Figure out which reloc number to use. Use TC_CONS_RELOC if
3768 it is defined, otherwise use NO_RELOC if it is defined,
3770 #ifndef TC_CONS_RELOC
3772 #define TC_CONS_RELOC NO_RELOC
3774 #define TC_CONS_RELOC 0
3777 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
, (int) nbytes
, exp
, 0,
3779 #endif /* TC_CONS_FIX_NEW */
3780 #endif /* BFD_ASSEMBLER */
3784 #ifdef BITFIELD_CONS_EXPRESSIONS
3786 /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as
3787 w:x,y:z, where w and y are bitwidths and x and y are values. They
3788 then pack them all together. We do a little better in that we allow
3789 them in words, longs, etc. and we'll pack them in target byte order
3792 The rules are: pack least significat bit first, if a field doesn't
3793 entirely fit, put it in the next unit. Overflowing the bitfield is
3794 explicitly *not* even a warning. The bitwidth should be considered
3797 To use this function the tc-XXX.h file should define
3798 BITFIELD_CONS_EXPRESSIONS. */
3801 parse_bitfield_cons (exp
, nbytes
)
3803 unsigned int nbytes
;
3805 unsigned int bits_available
= BITS_PER_CHAR
* nbytes
;
3806 char *hold
= input_line_pointer
;
3808 (void) expression (exp
);
3810 if (*input_line_pointer
== ':')
3817 unsigned long width
;
3819 if (*input_line_pointer
!= ':')
3821 input_line_pointer
= hold
;
3823 } /* Next piece is not a bitfield. */
3825 /* In the general case, we can't allow
3826 full expressions with symbol
3827 differences and such. The relocation
3828 entries for symbols not defined in this
3829 assembly would require arbitrary field
3830 widths, positions, and masks which most
3831 of our current object formats don't
3834 In the specific case where a symbol
3835 *is* defined in this assembly, we
3836 *could* build fixups and track it, but
3837 this could lead to confusion for the
3838 backends. I'm lazy. I'll take any
3839 SEG_ABSOLUTE. I think that means that
3840 you can use a previous .set or
3841 .equ type symbol. xoxorich. */
3843 if (exp
->X_op
== O_absent
)
3845 as_warn (_("using a bit field width of zero"));
3846 exp
->X_add_number
= 0;
3847 exp
->X_op
= O_constant
;
3848 } /* Implied zero width bitfield. */
3850 if (exp
->X_op
!= O_constant
)
3852 *input_line_pointer
= '\0';
3853 as_bad (_("field width \"%s\" too complex for a bitfield"), hold
);
3854 *input_line_pointer
= ':';
3855 demand_empty_rest_of_line ();
3857 } /* Too complex. */
3859 if ((width
= exp
->X_add_number
) > (BITS_PER_CHAR
* nbytes
))
3861 as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"),
3862 width
, nbytes
, (BITS_PER_CHAR
* nbytes
));
3863 width
= BITS_PER_CHAR
* nbytes
;
3866 if (width
> bits_available
)
3868 /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */
3869 input_line_pointer
= hold
;
3870 exp
->X_add_number
= value
;
3875 hold
= ++input_line_pointer
;
3877 (void) expression (exp
);
3878 if (exp
->X_op
!= O_constant
)
3880 char cache
= *input_line_pointer
;
3882 *input_line_pointer
= '\0';
3883 as_bad (_("field value \"%s\" too complex for a bitfield"), hold
);
3884 *input_line_pointer
= cache
;
3885 demand_empty_rest_of_line ();
3887 } /* Too complex. */
3889 value
|= ((~(-1 << width
) & exp
->X_add_number
)
3890 << ((BITS_PER_CHAR
* nbytes
) - bits_available
));
3892 if ((bits_available
-= width
) == 0
3893 || is_it_end_of_statement ()
3894 || *input_line_pointer
!= ',')
3897 } /* All the bitfields we're gonna get. */
3899 hold
= ++input_line_pointer
;
3900 (void) expression (exp
);
3903 exp
->X_add_number
= value
;
3904 exp
->X_op
= O_constant
;
3905 exp
->X_unsigned
= 1;
3909 #endif /* BITFIELD_CONS_EXPRESSIONS */
3911 /* Handle an MRI style string expression. */
3915 parse_mri_cons (exp
, nbytes
)
3917 unsigned int nbytes
;
3919 if (*input_line_pointer
!= '\''
3920 && (input_line_pointer
[1] != '\''
3921 || (*input_line_pointer
!= 'A'
3922 && *input_line_pointer
!= 'E')))
3923 TC_PARSE_CONS_EXPRESSION (exp
, nbytes
);
3927 unsigned int result
= 0;
3929 /* An MRI style string. Cut into as many bytes as will fit into
3930 a nbyte chunk, left justify if necessary, and separate with
3931 commas so we can try again later. */
3932 if (*input_line_pointer
== 'A')
3933 ++input_line_pointer
;
3934 else if (*input_line_pointer
== 'E')
3936 as_bad (_("EBCDIC constants are not supported"));
3937 ++input_line_pointer
;
3940 input_line_pointer
++;
3941 for (scan
= 0; scan
< nbytes
; scan
++)
3943 if (*input_line_pointer
== '\'')
3945 if (input_line_pointer
[1] == '\'')
3947 input_line_pointer
++;
3952 result
= (result
<< 8) | (*input_line_pointer
++);
3956 while (scan
< nbytes
)
3962 /* Create correct expression. */
3963 exp
->X_op
= O_constant
;
3964 exp
->X_add_number
= result
;
3966 /* Fake it so that we can read the next char too. */
3967 if (input_line_pointer
[0] != '\'' ||
3968 (input_line_pointer
[0] == '\'' && input_line_pointer
[1] == '\''))
3970 input_line_pointer
-= 2;
3971 input_line_pointer
[0] = ',';
3972 input_line_pointer
[1] = '\'';
3975 input_line_pointer
++;
3978 #endif /* TC_M68K */
3980 #ifdef REPEAT_CONS_EXPRESSIONS
3982 /* Parse a repeat expression for cons. This is used by the MIPS
3983 assembler. The format is NUMBER:COUNT; NUMBER appears in the
3984 object file COUNT times.
3986 To use this for a target, define REPEAT_CONS_EXPRESSIONS. */
3989 parse_repeat_cons (exp
, nbytes
)
3991 unsigned int nbytes
;
3998 if (*input_line_pointer
!= ':')
4000 /* No repeat count. */
4004 ++input_line_pointer
;
4005 expression (&count
);
4006 if (count
.X_op
!= O_constant
4007 || count
.X_add_number
<= 0)
4009 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4013 /* The cons function is going to output this expression once. So we
4014 output it count - 1 times. */
4015 for (i
= count
.X_add_number
- 1; i
> 0; i
--)
4016 emit_expr (exp
, nbytes
);
4019 #endif /* REPEAT_CONS_EXPRESSIONS */
4021 /* Parse a floating point number represented as a hex constant. This
4022 permits users to specify the exact bits they want in the floating
4026 hex_float (float_type
, bytes
)
4060 as_bad (_("unknown floating type type '%c'"), float_type
);
4064 /* It would be nice if we could go through expression to parse the
4065 hex constant, but if we get a bignum it's a pain to sort it into
4066 the buffer correctly. */
4068 while (hex_p (*input_line_pointer
) || *input_line_pointer
== '_')
4072 /* The MRI assembler accepts arbitrary underscores strewn about
4073 through the hex constant, so we ignore them as well. */
4074 if (*input_line_pointer
== '_')
4076 ++input_line_pointer
;
4082 as_warn (_("floating point constant too large"));
4085 d
= hex_value (*input_line_pointer
) << 4;
4086 ++input_line_pointer
;
4087 while (*input_line_pointer
== '_')
4088 ++input_line_pointer
;
4089 if (hex_p (*input_line_pointer
))
4091 d
+= hex_value (*input_line_pointer
);
4092 ++input_line_pointer
;
4094 if (target_big_endian
)
4097 bytes
[length
- i
- 1] = d
;
4103 if (target_big_endian
)
4104 memset (bytes
+ i
, 0, length
- i
);
4106 memset (bytes
, 0, length
- i
);
4114 CONStruct some more frag chars of .floats .ffloats etc.
4115 Makes 0 or more new frags.
4116 If need_pass_2 == 1, no frags are emitted.
4117 This understands only floating literals, not expressions. Sorry.
4119 A floating constant is defined by atof_generic(), except it is preceded
4120 by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
4121 reading, I decided to be incompatible. This always tries to give you
4122 rounded bits to the precision of the pseudo-op. Former AS did premature
4123 truncatation, restored noisy bits instead of trailing 0s AND gave you
4124 a choice of 2 flavours of noise according to which of 2 floating-point
4125 scanners you directed AS to use.
4127 In: input_line_pointer->whitespace before, or '0' of flonum. */
4130 float_cons (float_type
)
4131 /* Clobbers input_line-pointer, checks end-of-line. */
4132 register int float_type
; /* 'f':.ffloat ... 'F':.float ... */
4135 int length
; /* Number of chars in an object. */
4136 register char *err
; /* Error from scanning floating literal. */
4137 char temp
[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
];
4139 if (is_it_end_of_statement ())
4141 demand_empty_rest_of_line ();
4145 #ifdef md_flush_pending_output
4146 md_flush_pending_output ();
4151 /* input_line_pointer->1st char of a flonum (we hope!). */
4154 /* Skip any 0{letter} that may be present. Don't even check if the
4155 letter is legal. Someone may invent a "z" format and this routine
4156 has no use for such information. Lusers beware: you get
4157 diagnostics if your input is ill-conditioned. */
4158 if (input_line_pointer
[0] == '0'
4159 && ISALPHA (input_line_pointer
[1]))
4160 input_line_pointer
+= 2;
4162 /* Accept :xxxx, where the x's are hex digits, for a floating
4163 point with the exact digits specified. */
4164 if (input_line_pointer
[0] == ':')
4166 ++input_line_pointer
;
4167 length
= hex_float (float_type
, temp
);
4170 ignore_rest_of_line ();
4176 err
= md_atof (float_type
, temp
, &length
);
4177 know (length
<= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
);
4181 as_bad (_("bad floating literal: %s"), err
);
4182 ignore_rest_of_line ();
4193 #ifdef REPEAT_CONS_EXPRESSIONS
4194 if (*input_line_pointer
== ':')
4196 expressionS count_exp
;
4198 ++input_line_pointer
;
4199 expression (&count_exp
);
4201 if (count_exp
.X_op
!= O_constant
4202 || count_exp
.X_add_number
<= 0)
4203 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4205 count
= count_exp
.X_add_number
;
4209 while (--count
>= 0)
4211 p
= frag_more (length
);
4212 memcpy (p
, temp
, (unsigned int) length
);
4217 while (*input_line_pointer
++ == ',');
4219 /* Put terminator back into stream. */
4220 --input_line_pointer
;
4221 demand_empty_rest_of_line ();
4224 /* Return the size of a LEB128 value. */
4227 sizeof_sleb128 (value
)
4230 register int size
= 0;
4231 register unsigned byte
;
4235 byte
= (value
& 0x7f);
4236 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
4237 Fortunately, we can structure things so that the extra work reduces
4238 to a noop on systems that do things "properly". */
4239 value
= (value
>> 7) | ~(-(offsetT
)1 >> 7);
4242 while (!(((value
== 0) && ((byte
& 0x40) == 0))
4243 || ((value
== -1) && ((byte
& 0x40) != 0))));
4249 sizeof_uleb128 (value
)
4252 register int size
= 0;
4253 register unsigned byte
;
4257 byte
= (value
& 0x7f);
4267 sizeof_leb128 (value
, sign
)
4272 return sizeof_sleb128 ((offsetT
) value
);
4274 return sizeof_uleb128 (value
);
4277 /* Output a LEB128 value. */
4280 output_sleb128 (p
, value
)
4284 register char *orig
= p
;
4289 unsigned byte
= (value
& 0x7f);
4291 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
4292 Fortunately, we can structure things so that the extra work reduces
4293 to a noop on systems that do things "properly". */
4294 value
= (value
>> 7) | ~(-(offsetT
)1 >> 7);
4296 more
= !((((value
== 0) && ((byte
& 0x40) == 0))
4297 || ((value
== -1) && ((byte
& 0x40) != 0))));
4309 output_uleb128 (p
, value
)
4317 unsigned byte
= (value
& 0x7f);
4320 /* More bytes to follow. */
4331 output_leb128 (p
, value
, sign
)
4337 return output_sleb128 (p
, (offsetT
) value
);
4339 return output_uleb128 (p
, value
);
4342 /* Do the same for bignums. We combine sizeof with output here in that
4343 we don't output for NULL values of P. It isn't really as critical as
4344 for "normal" values that this be streamlined. */
4347 output_big_sleb128 (p
, bignum
, size
)
4349 LITTLENUM_TYPE
*bignum
;
4357 /* Strip leading sign extensions off the bignum. */
4358 while (size
> 0 && bignum
[size
- 1] == (LITTLENUM_TYPE
) -1)
4363 if (loaded
< 7 && size
> 0)
4365 val
|= (*bignum
<< loaded
);
4366 loaded
+= 8 * CHARS_PER_LITTLENUM
;
4377 if ((val
== 0 && (byte
& 0x40) == 0)
4378 || (~(val
| ~(((valueT
) 1 << loaded
) - 1)) == 0
4379 && (byte
& 0x40) != 0))
4387 while (byte
& 0x80);
4393 output_big_uleb128 (p
, bignum
, size
)
4395 LITTLENUM_TYPE
*bignum
;
4403 /* Strip leading zeros off the bignum. */
4404 /* XXX: Is this needed? */
4405 while (size
> 0 && bignum
[size
- 1] == 0)
4410 if (loaded
< 7 && size
> 0)
4412 val
|= (*bignum
<< loaded
);
4413 loaded
+= 8 * CHARS_PER_LITTLENUM
;
4422 if (size
> 0 || val
)
4429 while (byte
& 0x80);
4435 output_big_leb128 (p
, bignum
, size
, sign
)
4437 LITTLENUM_TYPE
*bignum
;
4441 return output_big_sleb128 (p
, bignum
, size
);
4443 return output_big_uleb128 (p
, bignum
, size
);
4446 /* Generate the appropriate fragments for a given expression to emit a
4450 emit_leb128_expr (exp
, sign
)
4454 operatorT op
= exp
->X_op
;
4457 if (op
== O_absent
|| op
== O_illegal
)
4459 as_warn (_("zero assumed for missing expression"));
4460 exp
->X_add_number
= 0;
4463 else if (op
== O_big
&& exp
->X_add_number
<= 0)
4465 as_bad (_("floating point number invalid"));
4466 exp
->X_add_number
= 0;
4469 else if (op
== O_register
)
4471 as_warn (_("register value used as expression"));
4475 /* Let check_eh_frame know that data is being emitted. nbytes == -1 is
4476 a signal that this is leb128 data. It shouldn't optimize this away. */
4478 if (check_eh_frame (exp
, &nbytes
))
4481 /* Let the backend know that subsequent data may be byte aligned. */
4482 #ifdef md_cons_align
4486 if (op
== O_constant
)
4488 /* If we've got a constant, emit the thing directly right now. */
4490 valueT value
= exp
->X_add_number
;
4494 size
= sizeof_leb128 (value
, sign
);
4495 p
= frag_more (size
);
4496 output_leb128 (p
, value
, sign
);
4498 else if (op
== O_big
)
4500 /* O_big is a different sort of constant. */
4505 size
= output_big_leb128 (NULL
, generic_bignum
, exp
->X_add_number
, sign
);
4506 p
= frag_more (size
);
4507 output_big_leb128 (p
, generic_bignum
, exp
->X_add_number
, sign
);
4511 /* Otherwise, we have to create a variable sized fragment and
4512 resolve things later. */
4514 frag_var (rs_leb128
, sizeof_uleb128 (~(valueT
) 0), 0, sign
,
4515 make_expr_symbol (exp
), 0, (char *) NULL
);
4519 /* Parse the .sleb128 and .uleb128 pseudos. */
4530 emit_leb128_expr (&exp
, sign
);
4532 while (*input_line_pointer
++ == ',');
4534 input_line_pointer
--;
4535 demand_empty_rest_of_line ();
4538 /* We read 0 or more ',' separated, double-quoted strings.
4539 Caller should have checked need_pass_2 is FALSE because we don't
4543 stringer (append_zero
) /* Worker to do .ascii etc statements. */
4544 /* Checks end-of-line. */
4545 register int append_zero
; /* 0: don't append '\0', else 1. */
4547 register unsigned int c
;
4550 #ifdef md_flush_pending_output
4551 md_flush_pending_output ();
4554 /* The following awkward logic is to parse ZERO or more strings,
4555 comma separated. Recall a string expression includes spaces
4556 before the opening '\"' and spaces after the closing '\"'.
4557 We fake a leading ',' if there is (supposed to be)
4558 a 1st, expression. We keep demanding expressions for each ','. */
4559 if (is_it_end_of_statement ())
4561 c
= 0; /* Skip loop. */
4562 ++input_line_pointer
; /* Compensate for end of loop. */
4566 c
= ','; /* Do loop. */
4568 /* If we have been switched into the abs_section then we
4569 will not have an obstack onto which we can hang strings. */
4570 if (now_seg
== absolute_section
)
4572 as_bad (_("strings must be placed into a section"));
4574 ignore_rest_of_line ();
4577 while (c
== ',' || c
== '<' || c
== '"')
4580 switch (*input_line_pointer
)
4583 ++input_line_pointer
; /*->1st char of string. */
4584 start
= input_line_pointer
;
4585 while (is_a_char (c
= next_char_of_string ()))
4587 FRAG_APPEND_1_CHAR (c
);
4591 FRAG_APPEND_1_CHAR (0);
4593 know (input_line_pointer
[-1] == '\"');
4597 /* In ELF, when gcc is emitting DWARF 1 debugging output, it
4598 will emit .string with a filename in the .debug section
4599 after a sequence of constants. See the comment in
4600 emit_expr for the sequence. emit_expr will set
4601 dwarf_file_string to non-zero if this string might be a
4602 source file name. */
4603 if (strcmp (segment_name (now_seg
), ".debug") != 0)
4604 dwarf_file_string
= 0;
4605 else if (dwarf_file_string
)
4607 c
= input_line_pointer
[-1];
4608 input_line_pointer
[-1] = '\0';
4609 listing_source_file (start
);
4610 input_line_pointer
[-1] = c
;
4617 input_line_pointer
++;
4618 c
= get_single_number ();
4619 FRAG_APPEND_1_CHAR (c
);
4620 if (*input_line_pointer
!= '>')
4622 as_bad (_("expected <nn>"));
4624 input_line_pointer
++;
4627 input_line_pointer
++;
4631 c
= *input_line_pointer
;
4634 demand_empty_rest_of_line ();
4637 /* FIXME-SOMEDAY: I had trouble here on characters with the
4638 high bits set. We'll probably also have trouble with
4639 multibyte chars, wide chars, etc. Also be careful about
4640 returning values bigger than 1 byte. xoxorich. */
4643 next_char_of_string ()
4645 register unsigned int c
;
4647 c
= *input_line_pointer
++ & CHAR_MASK
;
4655 as_warn (_("unterminated string; newline inserted"));
4656 bump_line_counters ();
4659 #ifndef NO_STRING_ESCAPES
4661 switch (c
= *input_line_pointer
++)
4689 break; /* As itself. */
4705 for (i
= 0, number
= 0;
4706 ISDIGIT (c
) && i
< 3;
4707 c
= *input_line_pointer
++, i
++)
4709 number
= number
* 8 + c
- '0';
4714 --input_line_pointer
;
4723 c
= *input_line_pointer
++;
4724 while (ISXDIGIT (c
))
4727 number
= number
* 16 + c
- '0';
4728 else if (ISUPPER (c
))
4729 number
= number
* 16 + c
- 'A' + 10;
4731 number
= number
* 16 + c
- 'a' + 10;
4732 c
= *input_line_pointer
++;
4735 --input_line_pointer
;
4740 /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
4741 as_warn (_("unterminated string; newline inserted"));
4743 bump_line_counters ();
4748 #ifdef ONLY_STANDARD_ESCAPES
4749 as_bad (_("bad escaped character in string"));
4751 #endif /* ONLY_STANDARD_ESCAPES */
4756 #endif /* ! defined (NO_STRING_ESCAPES) */
4765 get_segmented_expression (expP
)
4766 register expressionS
*expP
;
4768 register segT retval
;
4770 retval
= expression (expP
);
4771 if (expP
->X_op
== O_illegal
4772 || expP
->X_op
== O_absent
4773 || expP
->X_op
== O_big
)
4775 as_bad (_("expected address expression"));
4776 expP
->X_op
= O_constant
;
4777 expP
->X_add_number
= 0;
4778 retval
= absolute_section
;
4784 get_known_segmented_expression (expP
)
4785 register expressionS
*expP
;
4787 register segT retval
;
4789 if ((retval
= get_segmented_expression (expP
)) == undefined_section
)
4791 /* There is no easy way to extract the undefined symbol from the
4793 if (expP
->X_add_symbol
!= NULL
4794 && S_GET_SEGMENT (expP
->X_add_symbol
) != expr_section
)
4795 as_warn (_("symbol \"%s\" undefined; zero assumed"),
4796 S_GET_NAME (expP
->X_add_symbol
));
4798 as_warn (_("some symbol undefined; zero assumed"));
4799 retval
= absolute_section
;
4800 expP
->X_op
= O_constant
;
4801 expP
->X_add_number
= 0;
4803 know (retval
== absolute_section
|| SEG_NORMAL (retval
));
4808 get_absolute_expr (exp
)
4812 if (exp
->X_op
!= O_constant
)
4814 if (exp
->X_op
!= O_absent
)
4815 as_bad (_("bad or irreducible absolute expression"));
4816 exp
->X_add_number
= 0;
4818 return exp
->X_add_number
;
4822 get_absolute_expression ()
4826 return get_absolute_expr (&exp
);
4829 char /* Return terminator. */
4830 get_absolute_expression_and_terminator (val_pointer
)
4831 long *val_pointer
; /* Return value of expression. */
4833 /* FIXME: val_pointer should probably be offsetT *. */
4834 *val_pointer
= (long) get_absolute_expression ();
4835 return (*input_line_pointer
++);
4838 /* Like demand_copy_string, but return NULL if the string contains any '\0's.
4839 Give a warning if that happens. */
4842 demand_copy_C_string (len_pointer
)
4847 if ((s
= demand_copy_string (len_pointer
)) != 0)
4851 for (len
= *len_pointer
; len
> 0; len
--)
4858 as_bad (_("this string may not contain \'\\0\'"));
4866 /* Demand string, but return a safe (=private) copy of the string.
4867 Return NULL if we can't read a string here. */
4870 demand_copy_string (lenP
)
4873 register unsigned int c
;
4879 if (*input_line_pointer
== '\"')
4881 input_line_pointer
++; /* Skip opening quote. */
4883 while (is_a_char (c
= next_char_of_string ()))
4885 obstack_1grow (¬es
, c
);
4888 /* JF this next line is so demand_copy_C_string will return a
4889 null terminated string. */
4890 obstack_1grow (¬es
, '\0');
4891 retval
= obstack_finish (¬es
);
4895 as_warn (_("missing string"));
4897 ignore_rest_of_line ();
4903 /* In: Input_line_pointer->next character.
4905 Do: Skip input_line_pointer over all whitespace.
4907 Out: 1 if input_line_pointer->end-of-line. */
4910 is_it_end_of_statement ()
4913 return (is_end_of_line
[(unsigned char) *input_line_pointer
]);
4917 equals (sym_name
, reassign
)
4921 register symbolS
*symbolP
; /* Symbol we are working with. */
4925 input_line_pointer
++;
4926 if (*input_line_pointer
== '=')
4927 input_line_pointer
++;
4929 while (*input_line_pointer
== ' ' || *input_line_pointer
== '\t')
4930 input_line_pointer
++;
4933 stop
= mri_comment_field (&stopc
);
4935 if (sym_name
[0] == '.' && sym_name
[1] == '\0')
4937 /* Turn '. = mumble' into a .org mumble. */
4938 register segT segment
;
4941 segment
= get_known_segmented_expression (&exp
);
4943 do_org (segment
, &exp
, 0);
4950 symbolP
= symbol_find (sym_name
);
4951 local
= symbolP
== NULL
;
4953 #endif /* OBJ_COFF */
4954 symbolP
= symbol_find_or_make (sym_name
);
4955 /* Permit register names to be redefined. */
4957 && S_IS_DEFINED (symbolP
)
4958 && S_GET_SEGMENT (symbolP
) != reg_section
)
4959 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP
));
4962 /* "set" symbols are local unless otherwise specified. */
4964 SF_SET_LOCAL (symbolP
);
4965 #endif /* OBJ_COFF */
4967 pseudo_set (symbolP
);
4972 /* Check garbage after the expression. */
4973 ignore_rest_of_line ();
4974 mri_comment_end (stop
, stopc
);
4978 /* .incbin -- include a file verbatim at the current location. */
4982 int x ATTRIBUTE_UNUSED
;
4993 #ifdef md_flush_pending_output
4994 md_flush_pending_output ();
4998 filename
= demand_copy_string (& len
);
4999 if (filename
== NULL
)
5004 /* Look for optional skip and count. */
5005 if (* input_line_pointer
== ',')
5007 ++ input_line_pointer
;
5008 skip
= get_absolute_expression ();
5012 if (* input_line_pointer
== ',')
5014 ++ input_line_pointer
;
5016 count
= get_absolute_expression ();
5018 as_warn (_(".incbin count zero, ignoring `%s'"), filename
);
5024 demand_empty_rest_of_line ();
5026 /* Try opening absolute path first, then try include dirs. */
5027 binfile
= fopen (filename
, FOPEN_RB
);
5028 if (binfile
== NULL
)
5032 path
= xmalloc ((unsigned long) len
+ include_dir_maxlen
+ 5);
5034 for (i
= 0; i
< include_dir_count
; i
++)
5036 sprintf (path
, "%s/%s", include_dirs
[i
], filename
);
5038 binfile
= fopen (path
, FOPEN_RB
);
5039 if (binfile
!= NULL
)
5043 if (binfile
== NULL
)
5044 as_bad (_("file not found: %s"), filename
);
5047 path
= xstrdup (filename
);
5053 register_dependency (path
);
5055 /* Compute the length of the file. */
5056 if (fseek (binfile
, 0, SEEK_END
) != 0)
5058 as_bad (_("seek to end of .incbin file failed `%s'"), path
);
5061 file_len
= ftell (binfile
);
5063 /* If a count was not specified use the size of the file. */
5067 if (skip
+ count
> file_len
)
5069 as_bad (_("skip (%ld) + count (%ld) larger than file size (%ld)"),
5070 skip
, count
, file_len
);
5074 if (fseek (binfile
, skip
, SEEK_SET
) != 0)
5076 as_bad (_("could not skip to %ld in file `%s'"), skip
, path
);
5080 /* Allocate frag space and store file contents in it. */
5081 binfrag
= frag_more (count
);
5083 bytes
= fread (binfrag
, 1, count
, binfile
);
5085 as_warn (_("truncated file `%s', %ld of %ld bytes read"),
5086 path
, bytes
, count
);
5089 if (binfile
!= NULL
)
5095 /* .include -- include a file at this point. */
5099 int arg ATTRIBUTE_UNUSED
;
5108 filename
= demand_copy_string (&i
);
5109 if (filename
== NULL
)
5111 /* demand_copy_string has already printed an error and
5112 called ignore_rest_of_line. */
5120 while (!is_end_of_line
[(unsigned char) *input_line_pointer
]
5121 && *input_line_pointer
!= ' '
5122 && *input_line_pointer
!= '\t')
5124 obstack_1grow (¬es
, *input_line_pointer
);
5125 ++input_line_pointer
;
5129 obstack_1grow (¬es
, '\0');
5130 filename
= obstack_finish (¬es
);
5131 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
5132 ++input_line_pointer
;
5135 demand_empty_rest_of_line ();
5136 path
= xmalloc ((unsigned long) i
+ include_dir_maxlen
+ 5 /* slop */ );
5138 for (i
= 0; i
< include_dir_count
; i
++)
5140 strcpy (path
, include_dirs
[i
]);
5142 strcat (path
, filename
);
5143 if (0 != (try = fopen (path
, FOPEN_RT
)))
5153 /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
5154 register_dependency (path
);
5155 input_scrub_insert_file (path
);
5159 add_include_dir (path
)
5164 if (include_dir_count
== 0)
5166 include_dirs
= (char **) xmalloc (2 * sizeof (*include_dirs
));
5167 include_dirs
[0] = "."; /* Current dir. */
5168 include_dir_count
= 2;
5172 include_dir_count
++;
5174 (char **) realloc (include_dirs
,
5175 include_dir_count
* sizeof (*include_dirs
));
5178 include_dirs
[include_dir_count
- 1] = path
; /* New one. */
5181 if (i
> include_dir_maxlen
)
5182 include_dir_maxlen
= i
;
5185 /* Output debugging information to denote the source file. */
5188 generate_file_debug ()
5190 if (debug_type
== DEBUG_STABS
)
5191 stabs_generate_asm_file ();
5194 /* Output line number debugging information for the current source line. */
5197 generate_lineno_debug ()
5201 case DEBUG_UNSPECIFIED
:
5206 stabs_generate_asm_lineno ();
5209 ecoff_generate_asm_lineno ();
5212 /* ??? We could here indicate to dwarf2dbg.c that something
5213 has changed. However, since there is additional backend
5214 support that is required (calling dwarf2_emit_insn), we
5215 let dwarf2dbg.c call as_where on its own. */
5220 /* Output debugging information to mark a function entry point or end point.
5221 END_P is zero for .func, and non-zero for .endfunc. */
5227 do_s_func (end_p
, NULL
);
5230 /* Subroutine of s_func so targets can choose a different default prefix.
5231 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
5234 do_s_func (end_p
, default_prefix
)
5236 const char *default_prefix
;
5238 /* Record the current function so that we can issue an error message for
5239 misplaced .func,.endfunc, and also so that .endfunc needs no
5241 static char *current_name
;
5242 static char *current_label
;
5246 if (current_name
== NULL
)
5248 as_bad (_("missing .func"));
5249 ignore_rest_of_line ();
5253 if (debug_type
== DEBUG_STABS
)
5254 stabs_generate_asm_endfunc (current_name
, current_label
);
5256 current_name
= current_label
= NULL
;
5261 char delim1
, delim2
;
5263 if (current_name
!= NULL
)
5265 as_bad (_(".endfunc missing for previous .func"));
5266 ignore_rest_of_line ();
5270 name
= input_line_pointer
;
5271 delim1
= get_symbol_end ();
5272 name
= xstrdup (name
);
5273 *input_line_pointer
= delim1
;
5275 if (*input_line_pointer
!= ',')
5278 asprintf (&label
, "%s%s", default_prefix
, name
);
5281 char leading_char
= 0;
5282 #ifdef BFD_ASSEMBLER
5283 leading_char
= bfd_get_symbol_leading_char (stdoutput
);
5285 /* Missing entry point, use function's name with the leading
5288 asprintf (&label
, "%c%s", leading_char
, name
);
5295 ++input_line_pointer
;
5297 label
= input_line_pointer
;
5298 delim2
= get_symbol_end ();
5299 label
= xstrdup (label
);
5300 *input_line_pointer
= delim2
;
5303 if (debug_type
== DEBUG_STABS
)
5304 stabs_generate_asm_func (name
, label
);
5306 current_name
= name
;
5307 current_label
= label
;
5310 demand_empty_rest_of_line ();
5315 int arg ATTRIBUTE_UNUSED
;
5317 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
5319 ++input_line_pointer
;
5321 ++input_line_pointer
;
5325 read_print_statistics (file
)
5328 hash_print_statistics (file
, "pseudo-op table", po_hash
);
5331 /* Inserts the given line into the input stream.
5333 This call avoids macro/conditionals nesting checking, since the contents of
5334 the line are assumed to replace the contents of a line already scanned.
5336 An appropriate use of this function would be substition of input lines when
5337 called by md_start_line_hook(). The given line is assumed to already be
5338 properly scrubbed. */
5341 input_scrub_insert_line (line
)
5346 sb_add_string (&newline
, line
);
5347 input_scrub_include_sb (&newline
, input_line_pointer
, 0);
5349 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
5352 /* Insert a file into the input stream; the path must resolve to an actual
5353 file; no include path searching or dependency registering is performed. */
5356 input_scrub_insert_file (path
)
5359 input_scrub_include_file (path
, input_line_pointer
);
5360 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);