1 /* read.c - read a source file -
2 Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
4 2010, 2011, 2012 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF).
24 But then, GNU isn't spozed to run on your machine anyway.
25 (RMS is so shortsighted sometimes.) */
26 #define MASK_CHAR ((int)(unsigned char) -1)
28 /* This is the largest known floating point format (for now). It will
29 grow when we do 4361 style flonums. */
30 #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
32 /* Routines that read assembler source text to build spaghetti in memory.
33 Another group of these functions is in the expr.c module. */
36 #include "safe-ctype.h"
42 #include "dw2gencfi.h"
45 #ifndef TC_START_LABEL
46 #define TC_START_LABEL(x,y,z) (x == ':')
49 /* Set by the object-format or the target. */
50 #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
51 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
56 else if ((SIZE) >= 4) \
58 else if ((SIZE) >= 2) \
66 char *input_line_pointer
; /*->next char of source file to parse. */
68 #if BITS_PER_CHAR != 8
69 /* The following table is indexed by[(char)] and will break if
70 a char does not have exactly 256 states (hopefully 0:255!)! */
79 /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */
84 /* The Delta 68k assembler permits % inside label names. */
89 /* The PowerPC Windows NT assemblers permits ? inside label names. */
94 /* The IA-64 assembler uses # as a suffix designating a symbol. We include
95 it in the symbol and strip it out in tc_canonicalize_symbol_name. */
104 /* The Delta 68k assembler permits ~ at start of label names. */
108 /* Used by is_... macros. our ctype[]. */
109 char lex_type
[256] = {
110 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
111 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
112 0, 0, 0, LEX_HASH
, LEX_DOLLAR
, LEX_PCT
, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
113 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM
, /* 0123456789:;<=>? */
114 LEX_AT
, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
115 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR
, 0, LEX_BR
, 0, 3, /* PQRSTUVWXYZ[\]^_ */
116 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
117 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR
, 0, LEX_BR
, LEX_TILDE
, 0, /* pqrstuvwxyz{|}~. */
118 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
119 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
120 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
121 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
122 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
123 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
124 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
125 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
129 Out: 1 if this character ends a line.
130 2 if this character is a line separator. */
131 char is_end_of_line
[256] = {
133 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
135 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */
137 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
138 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */
139 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
140 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
141 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
142 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
143 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
144 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
145 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
146 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
147 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
148 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
149 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
150 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
151 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */
154 #ifndef TC_CASE_SENSITIVE
155 char original_case_string
[128];
158 /* Functions private to this file. */
160 static char *buffer
; /* 1st char of each buffer of lines is here. */
161 static char *buffer_limit
; /*->1 + last char in buffer. */
163 /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1
164 in the tc-<CPU>.h file. See the "Porting GAS" section of the
166 int target_big_endian
= TARGET_BYTES_BIG_ENDIAN
;
168 /* Variables for handling include file directory table. */
170 /* Table of pointers to directories to search for .include's. */
173 /* How many are in the table. */
174 int include_dir_count
;
176 /* Length of longest in table. */
177 int include_dir_maxlen
= 1;
179 #ifndef WORKING_DOT_WORD
180 struct broken_word
*broken_words
;
181 int new_broken_words
;
184 /* The current offset into the absolute section. We don't try to
185 build frags in the absolute section, since no data can be stored
186 there. We just keep track of the current offset. */
187 addressT abs_section_offset
;
189 /* If this line had an MRI style label, it is stored in this variable.
190 This is used by some of the MRI pseudo-ops. */
193 /* This global variable is used to support MRI common sections. We
194 translate such sections into a common symbol. This variable is
195 non-NULL when we are in an MRI common section. */
196 symbolS
*mri_common_symbol
;
198 /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we
199 need to align to an even byte boundary unless the next pseudo-op is
200 dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment
202 static int mri_pending_align
;
206 /* This variable is set to be non-zero if the next string we see might
207 be the name of the source file in DWARF debugging information. See
208 the comment in emit_expr for the format we look for. */
209 static int dwarf_file_string
;
213 /* If the target defines the md_frag_max_var hook then we know
214 enough to implement the .bundle_align_mode features. */
215 #ifdef md_frag_max_var
216 # define HANDLE_BUNDLE
220 /* .bundle_align_mode sets this. Normally it's zero. When nonzero,
221 it's the exponent of the bundle size, and aligned instruction bundle
222 mode is in effect. */
223 static unsigned int bundle_align_p2
;
225 /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets
226 bundle_lock_frag to frag_now and then starts a new frag with
227 frag_align_code. At the same time, bundle_lock_frain gets frchain_now,
228 so that .bundle_unlock can verify that we didn't change segments.
229 .bundle_unlock resets both to NULL. If we detect a bundling violation,
230 then we reset bundle_lock_frchain to NULL as an indicator that we've
231 already diagnosed the error with as_bad and don't need a cascade of
232 redundant errors, but bundle_lock_frag remains set to indicate that
233 we are expecting to see .bundle_unlock. */
234 static fragS
*bundle_lock_frag
;
235 static frchainS
*bundle_lock_frchain
;
237 /* This is incremented by .bundle_lock and decremented by .bundle_unlock,
239 static unsigned int bundle_lock_depth
;
242 static void do_s_func (int end_p
, const char *default_prefix
);
243 static void do_align (int, char *, int, int);
244 static void s_align (int, int);
245 static void s_altmacro (int);
246 static void s_bad_end (int);
247 static void s_reloc (int);
248 static int hex_float (int, char *);
249 static segT
get_known_segmented_expression (expressionS
* expP
);
250 static void pobegin (void);
251 static size_t get_non_macro_line_sb (sb
*);
252 static void generate_file_debug (void);
253 static char *_find_end_of_line (char *, int, int, int);
261 obj_read_begin_hook ();
263 /* Something close -- but not too close -- to a multiple of 1024.
264 The debugging malloc I'm using has 24 bytes of overhead. */
265 obstack_begin (¬es
, chunksize
);
266 obstack_begin (&cond_obstack
, chunksize
);
268 /* Use machine dependent syntax. */
269 for (p
= line_separator_chars
; *p
; p
++)
270 is_end_of_line
[(unsigned char) *p
] = 2;
271 /* Use more. FIXME-SOMEDAY. */
277 #ifndef TC_ADDRESS_BYTES
278 #define TC_ADDRESS_BYTES address_bytes
283 /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to
284 contain an address. */
285 int n
= (stdoutput
->arch_info
->bits_per_address
- 1) / 8;
293 /* Set up pseudo-op tables. */
295 static struct hash_control
*po_hash
;
297 static const pseudo_typeS potable
[] = {
298 {"abort", s_abort
, 0},
299 {"align", s_align_ptwo
, 0},
300 {"altmacro", s_altmacro
, 1},
301 {"ascii", stringer
, 8+0},
302 {"asciz", stringer
, 8+1},
303 {"balign", s_align_bytes
, 0},
304 {"balignw", s_align_bytes
, -2},
305 {"balignl", s_align_bytes
, -4},
308 {"bundle_align_mode", s_bundle_align_mode
, 0},
309 {"bundle_lock", s_bundle_lock
, 0},
310 {"bundle_unlock", s_bundle_unlock
, 0},
314 {"common", s_mri_common
, 0},
315 {"common.s", s_mri_common
, 1},
318 #ifdef TC_ADDRESS_BYTES
322 {"dc.d", float_cons
, 'd'},
324 {"dc.s", float_cons
, 'f'},
326 {"dc.x", float_cons
, 'x'},
328 {"dcb.b", s_space
, 1},
329 {"dcb.d", s_float_space
, 'd'},
330 {"dcb.l", s_space
, 4},
331 {"dcb.s", s_float_space
, 'f'},
332 {"dcb.w", s_space
, 2},
333 {"dcb.x", s_float_space
, 'x'},
335 {"ds.b", s_space
, 1},
336 {"ds.d", s_space
, 8},
337 {"ds.l", s_space
, 4},
338 {"ds.p", s_space
, 12},
339 {"ds.s", s_space
, 4},
340 {"ds.w", s_space
, 2},
341 {"ds.x", s_space
, 12},
342 {"debug", s_ignore
, 0},
347 {"double", float_cons
, 'd'},
349 {"eject", listing_eject
, 0}, /* Formfeed listing. */
351 {"elsec", s_else
, 0},
352 {"elseif", s_elseif
, (int) O_ne
},
354 {"endc", s_endif
, 0},
355 {"endfunc", s_func
, 1},
356 {"endif", s_endif
, 0},
357 {"endm", s_bad_end
, 0},
358 {"endr", s_bad_end
, 1},
364 {"error", s_errwarn
, 1},
365 {"exitm", s_mexit
, 0},
367 {"extern", s_ignore
, 0}, /* We treat all undef as ext. */
368 {"appfile", s_app_file
, 1},
369 {"appline", s_app_line
, 1},
371 {"file", s_app_file
, 0},
373 {"float", float_cons
, 'f'},
374 {"format", s_ignore
, 0},
376 {"global", s_globl
, 0},
377 {"globl", s_globl
, 0},
379 {"if", s_if
, (int) O_ne
},
382 {"ifdef", s_ifdef
, 0},
383 {"ifeq", s_if
, (int) O_eq
},
384 {"ifeqs", s_ifeqs
, 0},
385 {"ifge", s_if
, (int) O_ge
},
386 {"ifgt", s_if
, (int) O_gt
},
387 {"ifle", s_if
, (int) O_le
},
388 {"iflt", s_if
, (int) O_lt
},
391 {"ifndef", s_ifdef
, 1},
392 {"ifne", s_if
, (int) O_ne
},
393 {"ifnes", s_ifeqs
, 1},
394 {"ifnotdef", s_ifdef
, 1},
395 {"incbin", s_incbin
, 0},
396 {"include", s_include
, 0},
402 {"lcomm", s_lcomm
, 0},
403 {"lflags", s_ignore
, 0}, /* Listing flags. */
404 {"linefile", s_app_line
, 0},
405 {"linkonce", s_linkonce
, 0},
406 {"list", listing_list
, 1}, /* Turn listing on. */
407 {"llen", listing_psize
, 1},
410 {"macro", s_macro
, 0},
411 {"mexit", s_mexit
, 0},
413 {".mri", s_mri
, 0}, /* Special case so .mri works in MRI mode. */
414 {"name", s_ignore
, 0},
415 {"noaltmacro", s_altmacro
, 0},
416 {"noformat", s_ignore
, 0},
417 {"nolist", listing_list
, 0}, /* Turn listing off. */
418 {"nopage", listing_nopage
, 0},
420 {"offset", s_struct
, 0},
422 {"p2align", s_align_ptwo
, 0},
423 {"p2alignw", s_align_ptwo
, -2},
424 {"p2alignl", s_align_ptwo
, -4},
425 {"page", listing_eject
, 0},
426 {"plen", listing_psize
, 0},
427 {"print", s_print
, 0},
428 {"psize", listing_psize
, 0}, /* Set paper size. */
429 {"purgem", s_purgem
, 0},
431 {"reloc", s_reloc
, 0},
435 {"sbttl", listing_title
, 1}, /* Subtitle of listing. */
440 {"single", float_cons
, 'f'},
442 {"space", s_space
, 0},
443 {"skip", s_space
, 0},
444 {"sleb128", s_leb128
, 1},
445 {"spc", s_ignore
, 0},
446 {"stabd", s_stab
, 'd'},
447 {"stabn", s_stab
, 'n'},
448 {"stabs", s_stab
, 's'},
449 {"string", stringer
, 8+1},
450 {"string8", stringer
, 8+1},
451 {"string16", stringer
, 16+1},
452 {"string32", stringer
, 32+1},
453 {"string64", stringer
, 64+1},
454 {"struct", s_struct
, 0},
458 /* This is for gcc to use. It's only just been added (2/94), so gcc
459 won't be able to use it for a while -- probably a year or more.
460 But once this has been released, check with gcc maintainers
461 before deleting it or even changing the spelling. */
462 {"this_GCC_requires_the_GNU_assembler", s_ignore
, 0},
463 /* If we're folding case -- done for some targets, not necessarily
464 all -- the above string in an input file will be converted to
465 this one. Match it either way... */
466 {"this_gcc_requires_the_gnu_assembler", s_ignore
, 0},
468 {"title", listing_title
, 0}, /* Listing title. */
469 {"ttl", listing_title
, 0},
471 {"uleb128", s_leb128
, 0},
475 {"xdef", s_globl
, 0},
476 {"xref", s_ignore
, 0},
477 {"xstabs", s_xstab
, 's'},
478 {"warning", s_errwarn
, 0},
479 {"weakref", s_weakref
, 0},
481 {"zero", s_space
, 0},
482 {NULL
, NULL
, 0} /* End sentinel. */
486 get_absolute_expr (expressionS
*exp
)
488 expression_and_evaluate (exp
);
489 if (exp
->X_op
!= O_constant
)
491 if (exp
->X_op
!= O_absent
)
492 as_bad (_("bad or irreducible absolute expression"));
493 exp
->X_add_number
= 0;
495 return exp
->X_add_number
;
499 get_absolute_expression (void)
503 return get_absolute_expr (&exp
);
506 static int pop_override_ok
= 0;
507 static const char *pop_table_name
;
510 pop_insert (const pseudo_typeS
*table
)
513 const pseudo_typeS
*pop
;
514 for (pop
= table
; pop
->poc_name
; pop
++)
516 errtxt
= hash_insert (po_hash
, pop
->poc_name
, (char *) pop
);
517 if (errtxt
&& (!pop_override_ok
|| strcmp (errtxt
, "exists")))
518 as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name
,
523 #ifndef md_pop_insert
524 #define md_pop_insert() pop_insert(md_pseudo_table)
527 #ifndef obj_pop_insert
528 #define obj_pop_insert() pop_insert(obj_pseudo_table)
531 #ifndef cfi_pop_insert
532 #define cfi_pop_insert() pop_insert(cfi_pseudo_table)
538 po_hash
= hash_new ();
540 /* Do the target-specific pseudo ops. */
541 pop_table_name
= "md";
544 /* Now object specific. Skip any that were in the target table. */
545 pop_table_name
= "obj";
549 /* Now portable ones. Skip any that we've seen already. */
550 pop_table_name
= "standard";
551 pop_insert (potable
);
554 pop_table_name
= "cfi";
559 #define HANDLE_CONDITIONAL_ASSEMBLY() \
560 if (ignore_input ()) \
562 char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \
563 input_line_pointer = (input_line_pointer <= buffer_limit \
564 && eol >= buffer_limit) \
570 /* This function is used when scrubbing the characters between #APP
573 static char *scrub_string
;
574 static char *scrub_string_end
;
577 scrub_from_string (char *buf
, size_t buflen
)
581 copy
= scrub_string_end
- scrub_string
;
584 memcpy (buf
, scrub_string
, copy
);
585 scrub_string
+= copy
;
589 /* Helper function of read_a_source_file, which tries to expand a macro. */
591 try_macro (char term
, const char *line
)
597 if (check_macro (line
, &out
, &err
, ¯o
))
601 *input_line_pointer
++ = term
;
602 input_scrub_include_sb (&out
,
603 input_line_pointer
, 1);
606 input_scrub_next_buffer (&input_line_pointer
);
608 md_macro_info (macro
);
616 /* Start a new instruction bundle. Returns the rs_align_code frag that
617 will be used to align the new bundle. */
621 fragS
*frag
= frag_now
;
623 frag_align_code (0, 0);
625 while (frag
->fr_type
!= rs_align_code
)
626 frag
= frag
->fr_next
;
628 gas_assert (frag
!= frag_now
);
633 /* Calculate the maximum size after relaxation of the region starting
634 at the given frag and extending through frag_now (which is unfinished). */
636 pending_bundle_size (fragS
*frag
)
638 unsigned int offset
= frag
->fr_fix
;
639 unsigned int size
= 0;
641 gas_assert (frag
!= frag_now
);
642 gas_assert (frag
->fr_type
== rs_align_code
);
644 while (frag
!= frag_now
)
646 /* This should only happen in what will later become an error case. */
650 size
+= frag
->fr_fix
;
651 if (frag
->fr_type
== rs_machine_dependent
)
652 size
+= md_frag_max_var (frag
);
654 frag
= frag
->fr_next
;
657 gas_assert (frag
== frag_now
);
658 size
+= frag_now_fix ();
659 if (frag
->fr_type
== rs_machine_dependent
)
660 size
+= md_frag_max_var (frag
);
662 gas_assert (size
>= offset
);
664 return size
- offset
;
667 /* Finish off the frag created to ensure bundle alignment. */
669 finish_bundle (fragS
*frag
, unsigned int size
)
671 gas_assert (bundle_align_p2
> 0);
672 gas_assert (frag
->fr_type
== rs_align_code
);
676 /* If there is more than a single byte, then we need to set up the
677 alignment frag. Otherwise we leave it at its initial state from
678 calling frag_align_code (0, 0), so that it does nothing. */
679 frag
->fr_offset
= bundle_align_p2
;
680 frag
->fr_subtype
= size
- 1;
683 /* We do this every time rather than just in s_bundle_align_mode
684 so that we catch any affected section without needing hooks all
685 over for all paths that do section changes. It's cheap enough. */
686 record_alignment (now_seg
, bundle_align_p2
- OCTETS_PER_BYTE_POWER
);
689 /* Assemble one instruction. This takes care of the bundle features
690 around calling md_assemble. */
692 assemble_one (char *line
)
694 fragS
*insn_start_frag
= NULL
;
696 if (bundle_lock_frchain
!= NULL
&& bundle_lock_frchain
!= frchain_now
)
698 as_bad (_("cannot change section or subsection inside .bundle_lock"));
699 /* Clearing this serves as a marker that we have already complained. */
700 bundle_lock_frchain
= NULL
;
703 if (bundle_lock_frchain
== NULL
&& bundle_align_p2
> 0)
704 insn_start_frag
= start_bundle ();
708 if (bundle_lock_frchain
!= NULL
)
710 /* Make sure this hasn't pushed the locked sequence
711 past the bundle size. */
712 unsigned int bundle_size
= pending_bundle_size (bundle_lock_frag
);
713 if (bundle_size
> (1U << bundle_align_p2
))
715 .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"),
716 bundle_size
, 1U << bundle_align_p2
);
718 else if (bundle_align_p2
> 0)
720 unsigned int insn_size
= pending_bundle_size (insn_start_frag
);
722 if (insn_size
> (1U << bundle_align_p2
))
724 single instruction is %u bytes long but .bundle_align_mode limit is %u"),
725 (unsigned int) insn_size
, 1U << bundle_align_p2
);
727 finish_bundle (insn_start_frag
, insn_size
);
731 #else /* !HANDLE_BUNDLE */
733 # define assemble_one(line) md_assemble(line)
735 #endif /* HANDLE_BUNDLE */
737 /* We read the file, putting things into a web that represents what we
738 have been reading. */
740 read_a_source_file (char *name
)
743 char *s
; /* String of symbol, '\0' appended. */
751 buffer
= input_scrub_new_file (name
);
754 listing_newline (NULL
);
755 register_dependency (name
);
757 /* Generate debugging information before we've read anything in to denote
758 this file as the "main" source file and not a subordinate one
759 (e.g. N_SO vs N_SOL in stabs). */
760 generate_file_debug ();
762 while ((buffer_limit
= input_scrub_next_buffer (&input_line_pointer
)) != 0)
763 { /* We have another line to parse. */
765 /* In order to avoid listing macro expansion lines with labels
766 multiple times, keep track of which line was last issued. */
767 static char *last_eol
;
771 while (input_line_pointer
< buffer_limit
)
773 bfd_boolean was_new_line
;
774 /* We have more of this buffer to parse. */
776 /* We now have input_line_pointer->1st char of next line.
777 If input_line_pointer [-1] == '\n' then we just
778 scanned another line: so bump line counters. */
779 was_new_line
= is_end_of_line
[(unsigned char) input_line_pointer
[-1]];
782 symbol_set_value_now (&dot_symbol
);
783 #ifdef md_start_line_hook
784 md_start_line_hook ();
786 if (input_line_pointer
[-1] == '\n')
787 bump_line_counters ();
791 /* If listing is on, and we are expanding a macro, then give
792 the listing code the contents of the expanded line. */
795 if ((listing
& LISTING_MACEXP
) && macro_nest
> 0)
797 /* Find the end of the current expanded macro line. */
798 s
= find_end_of_line (input_line_pointer
, flag_m68k_mri
);
806 /* Copy it for safe keeping. Also give an indication of
807 how much macro nesting is involved at this point. */
808 len
= s
- input_line_pointer
;
809 copy
= (char *) xmalloc (len
+ macro_nest
+ 2);
810 memset (copy
, '>', macro_nest
);
811 copy
[macro_nest
] = ' ';
812 memcpy (copy
+ macro_nest
+ 1, input_line_pointer
, len
);
813 copy
[macro_nest
+ 1 + len
] = '\0';
815 /* Install the line with the listing facility. */
816 listing_newline (copy
);
820 listing_newline (NULL
);
827 if (LABELS_WITHOUT_COLONS
|| flag_m68k_mri
)
829 /* Text at the start of a line must be a label, we
830 run down and stick a colon in. */
831 if (is_name_beginner (*input_line_pointer
))
833 char *line_start
= input_line_pointer
;
836 HANDLE_CONDITIONAL_ASSEMBLY ();
838 c
= get_symbol_end ();
840 /* In MRI mode, the EQU and MACRO pseudoops must
841 be handled specially. */
845 char *rest
= input_line_pointer
+ 1;
849 if (*rest
== ' ' || *rest
== '\t')
851 if ((strncasecmp (rest
, "EQU", 3) == 0
852 || strncasecmp (rest
, "SET", 3) == 0)
853 && (rest
[3] == ' ' || rest
[3] == '\t'))
855 input_line_pointer
= rest
+ 3;
857 strncasecmp (rest
, "SET", 3) == 0);
860 if (strncasecmp (rest
, "MACRO", 5) == 0
863 || is_end_of_line
[(unsigned char) rest
[5]]))
867 /* In MRI mode, we need to handle the MACRO
868 pseudo-op specially: we don't want to put the
869 symbol in the symbol table. */
871 #ifdef TC_START_LABEL_WITHOUT_COLON
872 && TC_START_LABEL_WITHOUT_COLON(c
,
876 line_label
= colon (line_start
);
878 line_label
= symbol_create (line_start
,
883 *input_line_pointer
= c
;
885 input_line_pointer
++;
890 /* We are at the beginning of a line, or similar place.
891 We expect a well-formed assembler statement.
892 A "symbol-name:" is a statement.
894 Depending on what compiler is used, the order of these tests
895 may vary to catch most common case 1st.
896 Each test is independent of all other tests at the (top)
899 c
= *input_line_pointer
++;
900 while (c
== '\t' || c
== ' ' || c
== '\f');
902 /* C is the 1st significant character.
903 Input_line_pointer points after that character. */
904 if (is_name_beginner (c
))
906 /* Want user-defined label or pseudo/opcode. */
907 HANDLE_CONDITIONAL_ASSEMBLY ();
909 s
= --input_line_pointer
;
910 c
= get_symbol_end (); /* name's delimiter. */
912 /* C is character after symbol.
913 That character's place in the input line is now '\0'.
914 S points to the beginning of the symbol.
915 [In case of pseudo-op, s->'.'.]
916 Input_line_pointer->'\0' where c was. */
917 if (TC_START_LABEL (c
, s
, input_line_pointer
))
921 char *rest
= input_line_pointer
+ 1;
923 /* In MRI mode, \tsym: set 0 is permitted. */
927 if (*rest
== ' ' || *rest
== '\t')
930 if ((strncasecmp (rest
, "EQU", 3) == 0
931 || strncasecmp (rest
, "SET", 3) == 0)
932 && (rest
[3] == ' ' || rest
[3] == '\t'))
934 input_line_pointer
= rest
+ 3;
940 line_label
= colon (s
); /* User-defined label. */
941 /* Put ':' back for error messages' sake. */
942 *input_line_pointer
++ = ':';
943 #ifdef tc_check_label
944 tc_check_label (line_label
);
946 /* Input_line_pointer->after ':'. */
949 else if ((c
== '=' && input_line_pointer
[1] == '=')
950 || ((c
== ' ' || c
== '\t')
951 && input_line_pointer
[1] == '='
952 && input_line_pointer
[2] == '='))
955 demand_empty_rest_of_line ();
958 || ((c
== ' ' || c
== '\t')
959 && input_line_pointer
[1] == '='))
960 #ifdef TC_EQUAL_IN_INSN
961 && !TC_EQUAL_IN_INSN (c
, s
)
966 demand_empty_rest_of_line ();
970 /* Expect pseudo-op or machine instruction. */
973 #ifndef TC_CASE_SENSITIVE
977 strncpy (original_case_string
, s2
, sizeof (original_case_string
));
978 original_case_string
[sizeof (original_case_string
) - 1] = 0;
987 if (NO_PSEUDO_DOT
|| flag_m68k_mri
)
989 /* The MRI assembler uses pseudo-ops without
991 pop
= (pseudo_typeS
*) hash_find (po_hash
, s
);
992 if (pop
!= NULL
&& pop
->poc_handler
== NULL
)
997 || (!flag_m68k_mri
&& *s
== '.'))
1001 WARNING: c has next char, which may be end-of-line.
1002 We lookup the pseudo-op table with s+1 because we
1003 already know that the pseudo-op begins with a '.'. */
1006 pop
= (pseudo_typeS
*) hash_find (po_hash
, s
+ 1);
1007 if (pop
&& !pop
->poc_handler
)
1010 /* In MRI mode, we may need to insert an
1011 automatic alignment directive. What a hack
1013 if (mri_pending_align
1015 || !((pop
->poc_handler
== cons
1016 && pop
->poc_val
== 1)
1017 || (pop
->poc_handler
== s_space
1018 && pop
->poc_val
== 1)
1019 #ifdef tc_conditional_pseudoop
1020 || tc_conditional_pseudoop (pop
)
1022 || pop
->poc_handler
== s_if
1023 || pop
->poc_handler
== s_ifdef
1024 || pop
->poc_handler
== s_ifc
1025 || pop
->poc_handler
== s_ifeqs
1026 || pop
->poc_handler
== s_else
1027 || pop
->poc_handler
== s_endif
1028 || pop
->poc_handler
== s_globl
1029 || pop
->poc_handler
== s_ignore
)))
1031 do_align (1, (char *) NULL
, 0, 0);
1032 mri_pending_align
= 0;
1034 if (line_label
!= NULL
)
1036 symbol_set_frag (line_label
, frag_now
);
1037 S_SET_VALUE (line_label
, frag_now_fix ());
1041 /* Print the error msg now, while we still can. */
1044 char *end
= input_line_pointer
;
1046 *input_line_pointer
= c
;
1048 c
= *--input_line_pointer
;
1049 *input_line_pointer
= '\0';
1050 if (! macro_defined
|| ! try_macro (c
, s
))
1053 as_bad (_("unknown pseudo-op: `%s'"), s
);
1054 *input_line_pointer
++ = c
;
1059 /* Put it back for error messages etc. */
1060 *input_line_pointer
= c
;
1061 /* The following skip of whitespace is compulsory.
1062 A well shaped space is sometimes all that separates
1063 keyword from operands. */
1064 if (c
== ' ' || c
== '\t')
1065 input_line_pointer
++;
1067 /* Input_line is restored.
1068 Input_line_pointer->1st non-blank char
1069 after pseudo-operation. */
1070 (*pop
->poc_handler
) (pop
->poc_val
);
1072 /* If that was .end, just get out now. */
1073 if (pop
->poc_handler
== s_end
)
1078 /* WARNING: c has char, which may be end-of-line. */
1079 /* Also: input_line_pointer->`\0` where c was. */
1080 *input_line_pointer
= c
;
1081 input_line_pointer
= _find_end_of_line (input_line_pointer
, flag_m68k_mri
, 1, 0);
1082 c
= *input_line_pointer
;
1083 *input_line_pointer
= '\0';
1085 generate_lineno_debug ();
1087 if (macro_defined
&& try_macro (c
, s
))
1090 if (mri_pending_align
)
1092 do_align (1, (char *) NULL
, 0, 0);
1093 mri_pending_align
= 0;
1094 if (line_label
!= NULL
)
1096 symbol_set_frag (line_label
, frag_now
);
1097 S_SET_VALUE (line_label
, frag_now_fix ());
1101 assemble_one (s
); /* Assemble 1 instruction. */
1103 *input_line_pointer
++ = c
;
1105 /* We resume loop AFTER the end-of-line from
1106 this instruction. */
1112 /* Empty statement? */
1113 if (is_end_of_line
[(unsigned char) c
])
1116 if ((LOCAL_LABELS_DOLLAR
|| LOCAL_LABELS_FB
) && ISDIGIT (c
))
1118 /* local label ("4:") */
1119 char *backup
= input_line_pointer
;
1121 HANDLE_CONDITIONAL_ASSEMBLY ();
1125 /* Read the whole number. */
1126 while (ISDIGIT (*input_line_pointer
))
1128 temp
= (temp
* 10) + *input_line_pointer
- '0';
1129 ++input_line_pointer
;
1132 if (LOCAL_LABELS_DOLLAR
1133 && *input_line_pointer
== '$'
1134 && *(input_line_pointer
+ 1) == ':')
1136 input_line_pointer
+= 2;
1138 if (dollar_label_defined (temp
))
1140 as_fatal (_("label \"%d$\" redefined"), temp
);
1143 define_dollar_label (temp
);
1144 colon (dollar_label_name (temp
, 0));
1149 && *input_line_pointer
++ == ':')
1151 fb_label_instance_inc (temp
);
1152 colon (fb_label_name (temp
, 0));
1156 input_line_pointer
= backup
;
1157 } /* local label ("4:") */
1159 if (c
&& strchr (line_comment_chars
, c
))
1160 { /* Its a comment. Better say APP or NO_APP. */
1165 unsigned int new_length
;
1168 s
= input_line_pointer
;
1169 if (strncmp (s
, "APP\n", 4))
1172 ignore_rest_of_line ();
1175 bump_line_counters ();
1178 ends
= strstr (s
, "#NO_APP\n");
1182 unsigned int tmp_len
;
1185 /* The end of the #APP wasn't in this buffer. We
1186 keep reading in buffers until we find the #NO_APP
1187 that goes with this #APP There is one. The specs
1189 tmp_len
= buffer_limit
- s
;
1190 tmp_buf
= (char *) xmalloc (tmp_len
+ 1);
1191 memcpy (tmp_buf
, s
, tmp_len
);
1194 new_tmp
= input_scrub_next_buffer (&buffer
);
1198 buffer_limit
= new_tmp
;
1199 input_line_pointer
= buffer
;
1200 ends
= strstr (buffer
, "#NO_APP\n");
1202 num
= ends
- buffer
;
1204 num
= buffer_limit
- buffer
;
1206 tmp_buf
= (char *) xrealloc (tmp_buf
, tmp_len
+ num
);
1207 memcpy (tmp_buf
+ tmp_len
, buffer
, num
);
1212 input_line_pointer
= ends
? ends
+ 8 : NULL
;
1220 input_line_pointer
= ends
+ 8;
1224 scrub_string_end
= ends
;
1226 new_length
= ends
- s
;
1227 new_buf
= (char *) xmalloc (new_length
);
1234 space
= (new_buf
+ new_length
) - new_tmp
;
1235 size
= do_scrub_chars (scrub_from_string
, new_tmp
, space
);
1243 new_buf
= (char *) xrealloc (new_buf
, new_length
+ 100);
1244 new_tmp
= new_buf
+ new_length
;
1251 /* We've "scrubbed" input to the preferred format. In the
1252 process we may have consumed the whole of the remaining
1253 file (and included files). We handle this formatted
1254 input similar to that of macro expansion, letting
1255 actual macro expansion (possibly nested) and other
1256 input expansion work. Beware that in messages, line
1257 numbers and possibly file names will be incorrect. */
1258 new_length
= strlen (new_buf
);
1259 sb_build (&sbuf
, new_length
);
1260 sb_add_buffer (&sbuf
, new_buf
, new_length
);
1261 input_scrub_include_sb (&sbuf
, input_line_pointer
, 0);
1263 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
1268 HANDLE_CONDITIONAL_ASSEMBLY ();
1270 #ifdef tc_unrecognized_line
1271 if (tc_unrecognized_line (c
))
1274 input_line_pointer
--;
1275 /* Report unknown char as error. */
1276 demand_empty_rest_of_line ();
1281 symbol_set_value_now (&dot_symbol
);
1283 #ifdef HANDLE_BUNDLE
1284 if (bundle_lock_frag
!= NULL
)
1286 as_bad_where (bundle_lock_frag
->fr_file
, bundle_lock_frag
->fr_line
,
1287 _(".bundle_lock with no matching .bundle_unlock"));
1288 bundle_lock_frag
= NULL
;
1289 bundle_lock_frchain
= NULL
;
1290 bundle_lock_depth
= 0;
1297 /* Close the input file. */
1298 input_scrub_close ();
1299 #ifdef WARN_COMMENTS
1301 if (warn_comment
&& found_comment
)
1302 as_warn_where (found_comment_file
, found_comment
,
1303 "first comment found here");
1308 /* Convert O_constant expression EXP into the equivalent O_big representation.
1309 Take the sign of the number from X_unsigned rather than X_add_number. */
1312 convert_to_bignum (expressionS
*exp
)
1317 value
= exp
->X_add_number
;
1318 for (i
= 0; i
< sizeof (exp
->X_add_number
) / CHARS_PER_LITTLENUM
; i
++)
1320 generic_bignum
[i
] = value
& LITTLENUM_MASK
;
1321 value
>>= LITTLENUM_NUMBER_OF_BITS
;
1323 /* Add a sequence of sign bits if the top bit of X_add_number is not
1324 the sign of the original value. */
1325 if ((exp
->X_add_number
< 0) != !exp
->X_unsigned
)
1326 generic_bignum
[i
++] = exp
->X_unsigned
? 0 : LITTLENUM_MASK
;
1328 exp
->X_add_number
= i
;
1331 /* For most MRI pseudo-ops, the line actually ends at the first
1332 nonquoted space. This function looks for that point, stuffs a null
1333 in, and sets *STOPCP to the character that used to be there, and
1334 returns the location.
1336 Until I hear otherwise, I am going to assume that this is only true
1337 for the m68k MRI assembler. */
1340 mri_comment_field (char *stopcp
)
1346 know (flag_m68k_mri
);
1348 for (s
= input_line_pointer
;
1349 ((!is_end_of_line
[(unsigned char) *s
] && *s
!= ' ' && *s
!= '\t')
1357 for (s
= input_line_pointer
;
1358 !is_end_of_line
[(unsigned char) *s
];
1368 /* Skip to the end of an MRI comment field. */
1371 mri_comment_end (char *stop
, int stopc
)
1375 input_line_pointer
= stop
;
1377 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
1378 ++input_line_pointer
;
1382 s_abort (int ignore ATTRIBUTE_UNUSED
)
1384 as_fatal (_(".abort detected. Abandoning ship."));
1387 /* Guts of .align directive. N is the power of two to which to align.
1388 FILL may be NULL, or it may point to the bytes of the fill pattern.
1389 LEN is the length of whatever FILL points to, if anything. MAX is
1390 the maximum number of characters to skip when doing the alignment,
1391 or 0 if there is no maximum. */
1394 do_align (int n
, char *fill
, int len
, int max
)
1396 if (now_seg
== absolute_section
)
1400 if (*fill
++ != '\0')
1402 as_warn (_("ignoring fill value in absolute section"));
1409 #ifdef md_flush_pending_output
1410 md_flush_pending_output ();
1413 md_do_align (n
, fill
, len
, max
, just_record_alignment
);
1416 /* Only make a frag if we HAVE to... */
1417 if (n
!= 0 && !need_pass_2
)
1421 if (subseg_text_p (now_seg
))
1422 frag_align_code (n
, max
);
1424 frag_align (n
, 0, max
);
1427 frag_align (n
, *fill
, max
);
1429 frag_align_pattern (n
, fill
, len
, max
);
1433 just_record_alignment
: ATTRIBUTE_UNUSED_LABEL
1436 record_alignment (now_seg
, n
- OCTETS_PER_BYTE_POWER
);
1439 /* Handle the .align pseudo-op. A positive ARG is a default alignment
1440 (in bytes). A negative ARG is the negative of the length of the
1441 fill pattern. BYTES_P is non-zero if the alignment value should be
1442 interpreted as the byte boundary, rather than the power of 2. */
1443 #ifndef TC_ALIGN_LIMIT
1444 #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1)
1448 s_align (int arg
, int bytes_p
)
1450 unsigned int align_limit
= TC_ALIGN_LIMIT
;
1459 stop
= mri_comment_field (&stopc
);
1461 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
1466 align
= arg
; /* Default value from pseudo-op table. */
1470 align
= get_absolute_expression ();
1476 /* Convert to a power of 2. */
1481 for (i
= 0; (align
& 1) == 0; align
>>= 1, ++i
)
1484 as_bad (_("alignment not a power of 2"));
1490 if (align
> align_limit
)
1492 align
= align_limit
;
1493 as_warn (_("alignment too large: %u assumed"), align
);
1496 if (*input_line_pointer
!= ',')
1503 ++input_line_pointer
;
1504 if (*input_line_pointer
== ',')
1508 fill
= get_absolute_expression ();
1513 if (*input_line_pointer
!= ',')
1517 ++input_line_pointer
;
1518 max
= get_absolute_expression ();
1525 as_warn (_("expected fill pattern missing"));
1526 do_align (align
, (char *) NULL
, 0, max
);
1541 do_align (align
, &fill_char
, fill_len
, max
);
1547 if ((size_t) fill_len
> sizeof ab
)
1549 md_number_to_chars (ab
, fill
, fill_len
);
1550 do_align (align
, ab
, fill_len
, max
);
1554 demand_empty_rest_of_line ();
1557 mri_comment_end (stop
, stopc
);
1560 /* Handle the .align pseudo-op on machines where ".align 4" means
1561 align to a 4 byte boundary. */
1564 s_align_bytes (int arg
)
1569 /* Handle the .align pseudo-op on machines where ".align 4" means align
1570 to a 2**4 boundary. */
1573 s_align_ptwo (int arg
)
1578 /* Switch in and out of alternate macro mode. */
1583 demand_empty_rest_of_line ();
1584 macro_set_alternate (on
);
1587 /* Read a symbol name from input_line_pointer.
1589 Stores the symbol name in a buffer and returns a pointer to this buffer.
1590 The buffer is xalloc'ed. It is the caller's responsibility to free
1593 The name is not left in the i_l_p buffer as it may need processing
1594 to handle escape characters.
1596 Advances i_l_p to the next non-whitespace character.
1598 If a symbol name could not be read, the routine issues an error
1599 messages, skips to the end of the line and returns NULL. */
1602 read_symbol_name (void)
1608 c
= *input_line_pointer
++;
1612 #define SYM_NAME_CHUNK_LEN 128
1613 ptrdiff_t len
= SYM_NAME_CHUNK_LEN
;
1617 start
= name
= xmalloc (len
+ 1);
1619 name_end
= name
+ SYM_NAME_CHUNK_LEN
;
1621 while (is_a_char (C
= next_char_of_string ()))
1623 if (name
>= name_end
)
1627 sofar
= name
- start
;
1628 len
+= SYM_NAME_CHUNK_LEN
;
1629 start
= xrealloc (start
, len
+ 1);
1630 name_end
= start
+ len
;
1631 name
= start
+ sofar
;
1638 /* Since quoted symbol names can contain non-ASCII characters,
1639 check the string and warn if it cannot be recognised by the
1640 current character set. */
1641 if (mbstowcs (NULL
, name
, len
) == (size_t) -1)
1642 as_warn (_("symbol name not recognised in the current locale"));
1644 else if (is_name_beginner (c
) || c
== '\001')
1648 name
= input_line_pointer
- 1;
1650 /* We accept \001 in a name in case this is
1651 being called with a constructed string. */
1652 while (is_part_of_name (c
= *input_line_pointer
++)
1656 len
= (input_line_pointer
- name
) - 1;
1657 start
= xmalloc (len
+ 1);
1659 memcpy (start
, name
, len
);
1662 /* Skip a name ender char if one is present. */
1663 if (! is_name_ender (c
))
1664 --input_line_pointer
;
1667 name
= start
= NULL
;
1671 as_bad (_("expected symbol name"));
1672 ignore_rest_of_line ();
1683 s_comm_internal (int param
,
1684 symbolS
*(*comm_parse_extra
) (int, symbolS
*, addressT
))
1688 symbolS
*symbolP
= NULL
;
1694 stop
= mri_comment_field (&stopc
);
1696 if ((name
= read_symbol_name ()) == NULL
)
1699 /* Accept an optional comma after the name. The comma used to be
1700 required, but Irix 5 cc does not generate it for .lcomm. */
1701 if (*input_line_pointer
== ',')
1702 input_line_pointer
++;
1704 temp
= get_absolute_expr (&exp
);
1706 size
&= ((offsetT
) 2 << (stdoutput
->arch_info
->bits_per_address
- 1)) - 1;
1707 if (exp
.X_op
== O_absent
)
1709 as_bad (_("missing size expression"));
1710 ignore_rest_of_line ();
1713 else if (temp
!= size
|| !exp
.X_unsigned
)
1715 as_warn (_("size (%ld) out of range, ignored"), (long) temp
);
1716 ignore_rest_of_line ();
1720 symbolP
= symbol_find_or_make (name
);
1721 if ((S_IS_DEFINED (symbolP
) || symbol_equated_p (symbolP
))
1722 && !S_IS_COMMON (symbolP
))
1724 if (!S_IS_VOLATILE (symbolP
))
1727 as_bad (_("symbol `%s' is already defined"), name
);
1728 ignore_rest_of_line ();
1731 symbolP
= symbol_clone (symbolP
, 1);
1732 S_SET_SEGMENT (symbolP
, undefined_section
);
1733 S_SET_VALUE (symbolP
, 0);
1734 symbol_set_frag (symbolP
, &zero_address_frag
);
1735 S_CLEAR_VOLATILE (symbolP
);
1738 size
= S_GET_VALUE (symbolP
);
1741 else if (size
!= temp
)
1742 as_warn (_("size of \"%s\" is already %ld; not changing to %ld"),
1743 name
, (long) size
, (long) temp
);
1745 if (comm_parse_extra
!= NULL
)
1746 symbolP
= (*comm_parse_extra
) (param
, symbolP
, size
);
1749 S_SET_VALUE (symbolP
, (valueT
) size
);
1750 S_SET_EXTERNAL (symbolP
);
1751 S_SET_SEGMENT (symbolP
, bfd_com_section_ptr
);
1754 demand_empty_rest_of_line ();
1757 mri_comment_end (stop
, stopc
);
1766 s_comm_internal (ignore
, NULL
);
1769 /* The MRI COMMON pseudo-op. We handle this by creating a common
1770 symbol with the appropriate name. We make s_space do the right
1771 thing by increasing the size. */
1774 s_mri_common (int small ATTRIBUTE_UNUSED
)
1790 stop
= mri_comment_field (&stopc
);
1794 name
= input_line_pointer
;
1795 if (!ISDIGIT (*name
))
1796 c
= get_symbol_end ();
1801 ++input_line_pointer
;
1803 while (ISDIGIT (*input_line_pointer
));
1805 c
= *input_line_pointer
;
1806 *input_line_pointer
= '\0';
1808 if (line_label
!= NULL
)
1810 alc
= (char *) xmalloc (strlen (S_GET_NAME (line_label
))
1811 + (input_line_pointer
- name
)
1813 sprintf (alc
, "%s%s", name
, S_GET_NAME (line_label
));
1818 sym
= symbol_find_or_make (name
);
1819 *input_line_pointer
= c
;
1823 if (*input_line_pointer
!= ',')
1827 ++input_line_pointer
;
1828 align
= get_absolute_expression ();
1831 if (S_IS_DEFINED (sym
) && !S_IS_COMMON (sym
))
1833 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym
));
1834 ignore_rest_of_line ();
1835 mri_comment_end (stop
, stopc
);
1839 S_SET_EXTERNAL (sym
);
1840 S_SET_SEGMENT (sym
, bfd_com_section_ptr
);
1841 mri_common_symbol
= sym
;
1845 S_SET_ALIGN (sym
, align
);
1850 if (line_label
!= NULL
)
1853 exp
.X_op
= O_symbol
;
1854 exp
.X_add_symbol
= sym
;
1855 exp
.X_add_number
= 0;
1856 symbol_set_value_expression (line_label
, &exp
);
1857 symbol_set_frag (line_label
, &zero_address_frag
);
1858 S_SET_SEGMENT (line_label
, expr_section
);
1861 /* FIXME: We just ignore the small argument, which distinguishes
1862 COMMON and COMMON.S. I don't know what we can do about it. */
1864 /* Ignore the type and hptype. */
1865 if (*input_line_pointer
== ',')
1866 input_line_pointer
+= 2;
1867 if (*input_line_pointer
== ',')
1868 input_line_pointer
+= 2;
1870 demand_empty_rest_of_line ();
1872 mri_comment_end (stop
, stopc
);
1876 s_data (int ignore ATTRIBUTE_UNUSED
)
1881 temp
= get_absolute_expression ();
1882 if (flag_readonly_data_in_text
)
1884 section
= text_section
;
1888 section
= data_section
;
1890 subseg_set (section
, (subsegT
) temp
);
1892 demand_empty_rest_of_line ();
1895 /* Handle the .appfile pseudo-op. This is automatically generated by
1896 do_scrub_chars when a preprocessor # line comment is seen with a
1897 file name. This default definition may be overridden by the object
1898 or CPU specific pseudo-ops. This function is also the default
1899 definition for .file; the APPFILE argument is 1 for .appfile, 0 for
1903 s_app_file_string (char *file
, int appfile ATTRIBUTE_UNUSED
)
1907 listing_source_file (file
);
1909 register_dependency (file
);
1911 obj_app_file (file
, appfile
);
1916 s_app_file (int appfile
)
1921 /* Some assemblers tolerate immediately following '"'. */
1922 if ((s
= demand_copy_string (&length
)) != 0)
1925 = (!new_logical_line_flags (s
, -1, 1) && appfile
);
1927 /* In MRI mode, the preprocessor may have inserted an extraneous
1930 && *input_line_pointer
== '\''
1931 && is_end_of_line
[(unsigned char) input_line_pointer
[1]])
1932 ++input_line_pointer
;
1934 demand_empty_rest_of_line ();
1936 s_app_file_string (s
, appfile
);
1941 get_linefile_number (int *flag
)
1945 if (*input_line_pointer
< '0' || *input_line_pointer
> '9')
1948 *flag
= get_absolute_expression ();
1953 /* Handle the .appline pseudo-op. This is automatically generated by
1954 do_scrub_chars when a preprocessor # line comment is seen. This
1955 default definition may be overridden by the object or CPU specific
1959 s_app_line (int appline
)
1964 /* The given number is that of the next line. */
1966 l
= get_absolute_expression ();
1967 else if (!get_linefile_number (&l
))
1969 ignore_rest_of_line ();
1976 /* Some of the back ends can't deal with non-positive line numbers.
1977 Besides, it's silly. GCC however will generate a line number of
1978 zero when it is pre-processing builtins for assembler-with-cpp files:
1982 We do not want to barf on this, especially since such files are used
1983 in the GCC and GDB testsuites. So we check for negative line numbers
1984 rather than non-positive line numbers. */
1985 as_warn (_("line numbers must be positive; line number %d rejected"),
1996 if (*input_line_pointer
== '"')
1997 file
= demand_copy_string (&length
);
2003 while (get_linefile_number (&this_flag
))
2006 /* From GCC's cpp documentation:
2007 1: start of a new file.
2008 2: returning to a file after having included
2010 3: following text comes from a system header file.
2011 4: following text should be treated as extern "C".
2013 4 is nonsensical for the assembler; 3, we don't
2014 care about, so we ignore it just in case a
2015 system header file is included while
2016 preprocessing assembly. So 1 and 2 are all we
2017 care about, and they are mutually incompatible.
2018 new_logical_line_flags() demands this. */
2021 if (flags
&& flags
!= (1 << this_flag
))
2022 as_warn (_("incompatible flag %i in line directive"),
2025 flags
|= 1 << this_flag
;
2030 /* We ignore these. */
2034 as_warn (_("unsupported flag %i in line directive"),
2039 if (!is_end_of_line
[(unsigned char)*input_line_pointer
])
2044 if (appline
|| file
)
2046 new_logical_line_flags (file
, l
, flags
);
2049 listing_source_line (l
);
2053 if (appline
|| file
)
2054 demand_empty_rest_of_line ();
2056 ignore_rest_of_line ();
2059 /* Handle the .end pseudo-op. Actually, the real work is done in
2060 read_a_source_file. */
2063 s_end (int ignore ATTRIBUTE_UNUSED
)
2067 /* The MRI assembler permits the start symbol to follow .end,
2068 but we don't support that. */
2070 if (!is_end_of_line
[(unsigned char) *input_line_pointer
]
2071 && *input_line_pointer
!= '*'
2072 && *input_line_pointer
!= '!')
2073 as_warn (_("start address not supported"));
2077 /* Handle the .err pseudo-op. */
2080 s_err (int ignore ATTRIBUTE_UNUSED
)
2082 as_bad (_(".err encountered"));
2083 demand_empty_rest_of_line ();
2086 /* Handle the .error and .warning pseudo-ops. */
2092 /* The purpose for the conditional assignment is not to
2093 internationalize the directive itself, but that we need a
2094 self-contained message, one that can be passed like the
2095 demand_copy_C_string return value, and with no assumption on the
2096 location of the name of the directive within the message. */
2098 = (err
? _(".error directive invoked in source file")
2099 : _(".warning directive invoked in source file"));
2101 if (!is_it_end_of_statement ())
2103 if (*input_line_pointer
!= '\"')
2105 as_bad (_("%s argument must be a string"),
2106 err
? ".error" : ".warning");
2107 ignore_rest_of_line ();
2111 msg
= demand_copy_C_string (&len
);
2119 as_warn ("%s", msg
);
2120 demand_empty_rest_of_line ();
2123 /* Handle the MRI fail pseudo-op. */
2126 s_fail (int ignore ATTRIBUTE_UNUSED
)
2133 stop
= mri_comment_field (&stopc
);
2135 temp
= get_absolute_expression ();
2137 as_warn (_(".fail %ld encountered"), (long) temp
);
2139 as_bad (_(".fail %ld encountered"), (long) temp
);
2141 demand_empty_rest_of_line ();
2144 mri_comment_end (stop
, stopc
);
2148 s_fill (int ignore ATTRIBUTE_UNUSED
)
2150 expressionS rep_exp
;
2155 #ifdef md_flush_pending_output
2156 md_flush_pending_output ();
2159 #ifdef md_cons_align
2163 get_known_segmented_expression (&rep_exp
);
2164 if (*input_line_pointer
== ',')
2166 input_line_pointer
++;
2167 size
= get_absolute_expression ();
2168 if (*input_line_pointer
== ',')
2170 input_line_pointer
++;
2171 fill
= get_absolute_expression ();
2175 /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
2176 #define BSD_FILL_SIZE_CROCK_8 (8)
2177 if (size
> BSD_FILL_SIZE_CROCK_8
)
2179 as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8
);
2180 size
= BSD_FILL_SIZE_CROCK_8
;
2184 as_warn (_("size negative; .fill ignored"));
2187 else if (rep_exp
.X_op
== O_constant
&& rep_exp
.X_add_number
<= 0)
2189 if (rep_exp
.X_add_number
< 0)
2190 as_warn (_("repeat < 0; .fill ignored"));
2194 if (size
&& !need_pass_2
)
2196 if (rep_exp
.X_op
== O_constant
)
2198 p
= frag_var (rs_fill
, (int) size
, (int) size
,
2199 (relax_substateT
) 0, (symbolS
*) 0,
2200 (offsetT
) rep_exp
.X_add_number
,
2205 /* We don't have a constant repeat count, so we can't use
2206 rs_fill. We can get the same results out of rs_space,
2207 but its argument is in bytes, so we must multiply the
2208 repeat count by size. */
2211 rep_sym
= make_expr_symbol (&rep_exp
);
2214 expressionS size_exp
;
2215 size_exp
.X_op
= O_constant
;
2216 size_exp
.X_add_number
= size
;
2218 rep_exp
.X_op
= O_multiply
;
2219 rep_exp
.X_add_symbol
= rep_sym
;
2220 rep_exp
.X_op_symbol
= make_expr_symbol (&size_exp
);
2221 rep_exp
.X_add_number
= 0;
2222 rep_sym
= make_expr_symbol (&rep_exp
);
2225 p
= frag_var (rs_space
, (int) size
, (int) size
,
2226 (relax_substateT
) 0, rep_sym
, (offsetT
) 0, (char *) 0);
2229 memset (p
, 0, (unsigned int) size
);
2231 /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
2232 flavoured AS. The following bizarre behaviour is to be
2233 compatible with above. I guess they tried to take up to 8
2234 bytes from a 4-byte expression and they forgot to sign
2236 #define BSD_FILL_SIZE_CROCK_4 (4)
2237 md_number_to_chars (p
, (valueT
) fill
,
2238 (size
> BSD_FILL_SIZE_CROCK_4
2239 ? BSD_FILL_SIZE_CROCK_4
2241 /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
2242 but emits no error message because it seems a legal thing to do.
2243 It is a degenerate case of .fill but could be emitted by a
2246 demand_empty_rest_of_line ();
2250 s_globl (int ignore ATTRIBUTE_UNUSED
)
2259 stop
= mri_comment_field (&stopc
);
2263 if ((name
= read_symbol_name ()) == NULL
)
2266 symbolP
= symbol_find_or_make (name
);
2267 S_SET_EXTERNAL (symbolP
);
2270 c
= *input_line_pointer
;
2273 input_line_pointer
++;
2275 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
2283 demand_empty_rest_of_line ();
2286 mri_comment_end (stop
, stopc
);
2289 /* Handle the MRI IRP and IRPC pseudo-ops. */
2300 as_where (&file
, &line
);
2302 eol
= find_end_of_line (input_line_pointer
, 0);
2303 sb_build (&s
, eol
- input_line_pointer
);
2304 sb_add_buffer (&s
, input_line_pointer
, eol
- input_line_pointer
);
2305 input_line_pointer
= eol
;
2309 err
= expand_irp (irpc
, 0, &s
, &out
, get_non_macro_line_sb
);
2311 as_bad_where (file
, line
, "%s", err
);
2315 input_scrub_include_sb (&out
, input_line_pointer
, 1);
2317 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2320 /* Handle the .linkonce pseudo-op. This tells the assembler to mark
2321 the section to only be linked once. However, this is not supported
2322 by most object file formats. This takes an optional argument,
2323 which is what to do about duplicates. */
2326 s_linkonce (int ignore ATTRIBUTE_UNUSED
)
2328 enum linkonce_type type
;
2332 type
= LINKONCE_DISCARD
;
2334 if (!is_end_of_line
[(unsigned char) *input_line_pointer
])
2339 s
= input_line_pointer
;
2340 c
= get_symbol_end ();
2341 if (strcasecmp (s
, "discard") == 0)
2342 type
= LINKONCE_DISCARD
;
2343 else if (strcasecmp (s
, "one_only") == 0)
2344 type
= LINKONCE_ONE_ONLY
;
2345 else if (strcasecmp (s
, "same_size") == 0)
2346 type
= LINKONCE_SAME_SIZE
;
2347 else if (strcasecmp (s
, "same_contents") == 0)
2348 type
= LINKONCE_SAME_CONTENTS
;
2350 as_warn (_("unrecognized .linkonce type `%s'"), s
);
2352 *input_line_pointer
= c
;
2355 #ifdef obj_handle_link_once
2356 obj_handle_link_once (type
);
2357 #else /* ! defined (obj_handle_link_once) */
2361 if ((bfd_applicable_section_flags (stdoutput
) & SEC_LINK_ONCE
) == 0)
2362 as_warn (_(".linkonce is not supported for this object file format"));
2364 flags
= bfd_get_section_flags (stdoutput
, now_seg
);
2365 flags
|= SEC_LINK_ONCE
;
2370 case LINKONCE_DISCARD
:
2371 flags
|= SEC_LINK_DUPLICATES_DISCARD
;
2373 case LINKONCE_ONE_ONLY
:
2374 flags
|= SEC_LINK_DUPLICATES_ONE_ONLY
;
2376 case LINKONCE_SAME_SIZE
:
2377 flags
|= SEC_LINK_DUPLICATES_SAME_SIZE
;
2379 case LINKONCE_SAME_CONTENTS
:
2380 flags
|= SEC_LINK_DUPLICATES_SAME_CONTENTS
;
2383 if (!bfd_set_section_flags (stdoutput
, now_seg
, flags
))
2384 as_bad (_("bfd_set_section_flags: %s"),
2385 bfd_errmsg (bfd_get_error ()));
2387 #endif /* ! defined (obj_handle_link_once) */
2389 demand_empty_rest_of_line ();
2393 bss_alloc (symbolS
*symbolP
, addressT size
, int align
)
2396 segT current_seg
= now_seg
;
2397 subsegT current_subseg
= now_subseg
;
2398 segT bss_seg
= bss_section
;
2400 #if defined (TC_MIPS) || defined (TC_ALPHA)
2401 if (OUTPUT_FLAVOR
== bfd_target_ecoff_flavour
2402 || OUTPUT_FLAVOR
== bfd_target_elf_flavour
)
2404 /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */
2405 if (size
<= bfd_get_gp_size (stdoutput
))
2407 bss_seg
= subseg_new (".sbss", 1);
2408 seg_info (bss_seg
)->bss
= 1;
2409 if (!bfd_set_section_flags (stdoutput
, bss_seg
, SEC_ALLOC
))
2410 as_warn (_("error setting flags for \".sbss\": %s"),
2411 bfd_errmsg (bfd_get_error ()));
2415 subseg_set (bss_seg
, 1);
2419 record_alignment (bss_seg
, align
);
2420 frag_align (align
, 0, 0);
2423 /* Detach from old frag. */
2424 if (S_GET_SEGMENT (symbolP
) == bss_seg
)
2425 symbol_get_frag (symbolP
)->fr_symbol
= NULL
;
2427 symbol_set_frag (symbolP
, frag_now
);
2428 pfrag
= frag_var (rs_org
, 1, 1, 0, symbolP
, size
, NULL
);
2432 S_SET_SIZE (symbolP
, size
);
2434 S_SET_SEGMENT (symbolP
, bss_seg
);
2437 /* The symbol may already have been created with a preceding
2438 ".globl" directive -- be careful not to step on storage class
2439 in that case. Otherwise, set it to static. */
2440 if (S_GET_STORAGE_CLASS (symbolP
) != C_EXT
)
2441 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
2442 #endif /* OBJ_COFF */
2444 subseg_set (current_seg
, current_subseg
);
2448 parse_align (int align_bytes
)
2454 if (*input_line_pointer
!= ',')
2457 as_bad (_("expected alignment after size"));
2458 ignore_rest_of_line ();
2462 input_line_pointer
++;
2465 align
= get_absolute_expr (&exp
);
2466 if (exp
.X_op
== O_absent
)
2469 if (!exp
.X_unsigned
)
2471 as_warn (_("alignment negative; 0 assumed"));
2475 if (align_bytes
&& align
!= 0)
2477 /* convert to a power of 2 alignment */
2478 unsigned int alignp2
= 0;
2479 while ((align
& 1) == 0)
2480 align
>>= 1, ++alignp2
;
2483 as_bad (_("alignment not a power of 2"));
2484 ignore_rest_of_line ();
2492 /* Called from s_comm_internal after symbol name and size have been
2493 parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only),
2494 1 if this was a ".bss" directive which has a 3rd argument
2495 (alignment as a power of 2), or 2 if this was a ".bss" directive
2496 with alignment in bytes. */
2499 s_lcomm_internal (int needs_align
, symbolS
*symbolP
, addressT size
)
2505 align
= parse_align (needs_align
- 1);
2506 if (align
== (addressT
) -1)
2510 /* Assume some objects may require alignment on some systems. */
2511 TC_IMPLICIT_LCOMM_ALIGNMENT (size
, align
);
2513 bss_alloc (symbolP
, size
, align
);
2518 s_lcomm (int needs_align
)
2520 s_comm_internal (needs_align
, s_lcomm_internal
);
2524 s_lcomm_bytes (int needs_align
)
2526 s_comm_internal (needs_align
* 2, s_lcomm_internal
);
2530 s_lsym (int ignore ATTRIBUTE_UNUSED
)
2536 /* We permit ANY defined expression: BSD4.2 demands constants. */
2537 if ((name
= read_symbol_name ()) == NULL
)
2540 if (*input_line_pointer
!= ',')
2542 as_bad (_("expected comma after \"%s\""), name
);
2546 input_line_pointer
++;
2547 expression_and_evaluate (&exp
);
2549 if (exp
.X_op
!= O_constant
2550 && exp
.X_op
!= O_register
)
2552 as_bad (_("bad expression"));
2556 symbolP
= symbol_find_or_make (name
);
2558 if (S_GET_SEGMENT (symbolP
) == undefined_section
)
2560 /* The name might be an undefined .global symbol; be sure to
2561 keep the "external" bit. */
2562 S_SET_SEGMENT (symbolP
,
2563 (exp
.X_op
== O_constant
2566 S_SET_VALUE (symbolP
, (valueT
) exp
.X_add_number
);
2570 as_bad (_("symbol `%s' is already defined"), name
);
2573 demand_empty_rest_of_line ();
2578 ignore_rest_of_line ();
2583 /* Read a line into an sb. Returns the character that ended the line
2584 or zero if there are no more lines. */
2587 get_line_sb (sb
*line
, int in_macro
)
2591 if (input_line_pointer
[-1] == '\n')
2592 bump_line_counters ();
2594 if (input_line_pointer
>= buffer_limit
)
2596 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2597 if (buffer_limit
== 0)
2601 eol
= _find_end_of_line (input_line_pointer
, flag_m68k_mri
, 0, in_macro
);
2602 sb_add_buffer (line
, input_line_pointer
, eol
- input_line_pointer
);
2603 input_line_pointer
= eol
;
2605 /* Don't skip multiple end-of-line characters, because that breaks support
2606 for the IA-64 stop bit (;;) which looks like two consecutive end-of-line
2607 characters but isn't. Instead just skip one end of line character and
2608 return the character skipped so that the caller can re-insert it if
2610 return *input_line_pointer
++;
2614 get_non_macro_line_sb (sb
*line
)
2616 return get_line_sb (line
, 0);
2620 get_macro_line_sb (sb
*line
)
2622 return get_line_sb (line
, 1);
2625 /* Define a macro. This is an interface to macro.c. */
2628 s_macro (int ignore ATTRIBUTE_UNUSED
)
2636 as_where (&file
, &line
);
2638 eol
= find_end_of_line (input_line_pointer
, 0);
2639 sb_build (&s
, eol
- input_line_pointer
);
2640 sb_add_buffer (&s
, input_line_pointer
, eol
- input_line_pointer
);
2641 input_line_pointer
= eol
;
2643 if (line_label
!= NULL
)
2648 name
= S_GET_NAME (line_label
);
2649 len
= strlen (name
);
2650 sb_build (&label
, len
);
2651 sb_add_buffer (&label
, name
, len
);
2652 err
= define_macro (0, &s
, &label
, get_macro_line_sb
, file
, line
, &name
);
2656 err
= define_macro (0, &s
, NULL
, get_macro_line_sb
, file
, line
, &name
);
2658 as_bad_where (file
, line
, err
, name
);
2661 if (line_label
!= NULL
)
2663 S_SET_SEGMENT (line_label
, absolute_section
);
2664 S_SET_VALUE (line_label
, 0);
2665 symbol_set_frag (line_label
, &zero_address_frag
);
2668 if (((NO_PSEUDO_DOT
|| flag_m68k_mri
)
2669 && hash_find (po_hash
, name
) != NULL
)
2672 && hash_find (po_hash
, name
+ 1) != NULL
))
2673 as_warn_where (file
,
2675 _("attempt to redefine pseudo-op `%s' ignored"),
2682 /* Handle the .mexit pseudo-op, which immediately exits a macro
2686 s_mexit (int ignore ATTRIBUTE_UNUSED
)
2690 cond_exit_macro (macro_nest
);
2691 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
2694 as_warn (_("ignoring macro exit outside a macro definition."));
2697 /* Switch in and out of MRI mode. */
2700 s_mri (int ignore ATTRIBUTE_UNUSED
)
2703 #ifdef MRI_MODE_CHANGE
2707 on
= get_absolute_expression ();
2708 #ifdef MRI_MODE_CHANGE
2709 old_flag
= flag_mri
;
2728 /* Operator precedence changes in m68k MRI mode, so we need to
2729 update the operator rankings. */
2730 expr_set_precedence ();
2732 #ifdef MRI_MODE_CHANGE
2734 MRI_MODE_CHANGE (on
);
2737 demand_empty_rest_of_line ();
2740 /* Handle changing the location counter. */
2743 do_org (segT segment
, expressionS
*exp
, int fill
)
2745 if (segment
!= now_seg
2746 && segment
!= absolute_section
2747 && segment
!= expr_section
)
2748 as_bad (_("invalid segment \"%s\""), segment_name (segment
));
2750 if (now_seg
== absolute_section
)
2753 as_warn (_("ignoring fill value in absolute section"));
2754 if (exp
->X_op
!= O_constant
)
2756 as_bad (_("only constant offsets supported in absolute section"));
2757 exp
->X_add_number
= 0;
2759 abs_section_offset
= exp
->X_add_number
;
2764 symbolS
*sym
= exp
->X_add_symbol
;
2765 offsetT off
= exp
->X_add_number
* OCTETS_PER_BYTE
;
2767 if (exp
->X_op
!= O_constant
&& exp
->X_op
!= O_symbol
)
2769 /* Handle complex expressions. */
2770 sym
= make_expr_symbol (exp
);
2774 p
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, sym
, off
, (char *) 0);
2780 s_org (int ignore ATTRIBUTE_UNUSED
)
2786 #ifdef md_flush_pending_output
2787 md_flush_pending_output ();
2790 /* The m68k MRI assembler has a different meaning for .org. It
2791 means to create an absolute section at a given address. We can't
2792 support that--use a linker script instead. */
2795 as_bad (_("MRI style ORG pseudo-op not supported"));
2796 ignore_rest_of_line ();
2800 /* Don't believe the documentation of BSD 4.2 AS. There is no such
2801 thing as a sub-segment-relative origin. Any absolute origin is
2802 given a warning, then assumed to be segment-relative. Any
2803 segmented origin expression ("foo+42") had better be in the right
2804 segment or the .org is ignored.
2806 BSD 4.2 AS warns if you try to .org backwards. We cannot because
2807 we never know sub-segment sizes when we are reading code. BSD
2808 will crash trying to emit negative numbers of filler bytes in
2809 certain .orgs. We don't crash, but see as-write for that code.
2811 Don't make frag if need_pass_2==1. */
2812 segment
= get_known_segmented_expression (&exp
);
2813 if (*input_line_pointer
== ',')
2815 input_line_pointer
++;
2816 temp_fill
= get_absolute_expression ();
2822 do_org (segment
, &exp
, temp_fill
);
2824 demand_empty_rest_of_line ();
2827 /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be
2828 called by the obj-format routine which handles section changing
2829 when in MRI mode. It will create a new section, and return it. It
2830 will set *TYPE to the section type: one of 'C' (code), 'D' (data),
2831 'M' (mixed), or 'R' (romable). The flags will be set in the section. */
2834 s_mri_sect (char *type ATTRIBUTE_UNUSED
)
2844 name
= input_line_pointer
;
2845 if (!ISDIGIT (*name
))
2846 c
= get_symbol_end ();
2851 ++input_line_pointer
;
2853 while (ISDIGIT (*input_line_pointer
));
2855 c
= *input_line_pointer
;
2856 *input_line_pointer
= '\0';
2859 name
= xstrdup (name
);
2861 *input_line_pointer
= c
;
2863 seg
= subseg_new (name
, 0);
2865 if (*input_line_pointer
== ',')
2869 ++input_line_pointer
;
2870 align
= get_absolute_expression ();
2871 record_alignment (seg
, align
);
2875 if (*input_line_pointer
== ',')
2877 c
= *++input_line_pointer
;
2879 if (c
== 'C' || c
== 'D' || c
== 'M' || c
== 'R')
2882 as_bad (_("unrecognized section type"));
2883 ++input_line_pointer
;
2888 flags
= SEC_NO_FLAGS
;
2890 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_CODE
;
2891 else if (*type
== 'D' || *type
== 'M')
2892 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_DATA
;
2893 else if (*type
== 'R')
2894 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_DATA
| SEC_READONLY
| SEC_ROM
;
2895 if (flags
!= SEC_NO_FLAGS
)
2897 if (!bfd_set_section_flags (stdoutput
, seg
, flags
))
2898 as_warn (_("error setting flags for \"%s\": %s"),
2899 bfd_section_name (stdoutput
, seg
),
2900 bfd_errmsg (bfd_get_error ()));
2905 /* Ignore the HP type. */
2906 if (*input_line_pointer
== ',')
2907 input_line_pointer
+= 2;
2909 demand_empty_rest_of_line ();
2911 #else /* ! TC_M68K */
2920 name
= input_line_pointer
;
2921 c
= get_symbol_end ();
2923 name
= xstrdup (name
);
2925 *input_line_pointer
= c
;
2927 seg
= subseg_new (name
, 0);
2929 if (*input_line_pointer
!= ',')
2935 ++input_line_pointer
;
2937 sectype
= input_line_pointer
;
2938 c
= get_symbol_end ();
2939 if (*sectype
== '\0')
2941 else if (strcasecmp (sectype
, "text") == 0)
2943 else if (strcasecmp (sectype
, "data") == 0)
2945 else if (strcasecmp (sectype
, "romdata") == 0)
2948 as_warn (_("unrecognized section type `%s'"), sectype
);
2949 *input_line_pointer
= c
;
2952 if (*input_line_pointer
== ',')
2956 ++input_line_pointer
;
2958 seccmd
= input_line_pointer
;
2959 c
= get_symbol_end ();
2960 if (strcasecmp (seccmd
, "absolute") == 0)
2962 as_bad (_("absolute sections are not supported"));
2963 *input_line_pointer
= c
;
2964 ignore_rest_of_line ();
2967 else if (strcasecmp (seccmd
, "align") == 0)
2971 *input_line_pointer
= c
;
2972 align
= get_absolute_expression ();
2973 record_alignment (seg
, align
);
2977 as_warn (_("unrecognized section command `%s'"), seccmd
);
2978 *input_line_pointer
= c
;
2982 demand_empty_rest_of_line ();
2984 #else /* ! TC_I960 */
2985 /* The MRI assembler seems to use different forms of .sect for
2986 different targets. */
2987 as_bad ("MRI mode not supported for this target");
2988 ignore_rest_of_line ();
2989 #endif /* ! TC_I960 */
2990 #endif /* ! TC_M68K */
2993 /* Handle the .print pseudo-op. */
2996 s_print (int ignore ATTRIBUTE_UNUSED
)
3001 s
= demand_copy_C_string (&len
);
3004 demand_empty_rest_of_line ();
3007 /* Handle the .purgem pseudo-op. */
3010 s_purgem (int ignore ATTRIBUTE_UNUSED
)
3012 if (is_it_end_of_statement ())
3014 demand_empty_rest_of_line ();
3024 name
= input_line_pointer
;
3025 c
= get_symbol_end ();
3026 delete_macro (name
);
3027 *input_line_pointer
= c
;
3030 while (*input_line_pointer
++ == ',');
3032 --input_line_pointer
;
3033 demand_empty_rest_of_line ();
3036 /* Handle the .endm/.endr pseudo-ops. */
3039 s_bad_end (int endr
)
3041 as_warn (_(".end%c encountered without preceding %s"),
3043 endr
? ".rept, .irp, or .irpc" : ".macro");
3044 demand_empty_rest_of_line ();
3047 /* Handle the .rept pseudo-op. */
3050 s_rept (int ignore ATTRIBUTE_UNUSED
)
3054 count
= get_absolute_expression ();
3056 do_repeat (count
, "REPT", "ENDR");
3059 /* This function provides a generic repeat block implementation. It allows
3060 different directives to be used as the start/end keys. */
3063 do_repeat (int count
, const char *start
, const char *end
)
3069 if (!buffer_and_nest (start
, end
, &one
, get_non_macro_line_sb
))
3071 as_bad (_("%s without %s"), start
, end
);
3075 sb_build (&many
, count
* one
.len
);
3077 sb_add_sb (&many
, &one
);
3081 input_scrub_include_sb (&many
, input_line_pointer
, 1);
3083 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
3086 /* Like do_repeat except that any text matching EXPANDER in the
3087 block is replaced by the itteration count. */
3090 do_repeat_with_expander (int count
,
3093 const char * expander
)
3099 if (!buffer_and_nest (start
, end
, &one
, get_non_macro_line_sb
))
3101 as_bad (_("%s without %s"), start
, end
);
3107 if (expander
!= NULL
&& strstr (one
.ptr
, expander
) != NULL
)
3109 while (count
-- > 0)
3115 sb_build (& processed
, one
.len
);
3116 sb_add_sb (& processed
, & one
);
3117 sub
= strstr (processed
.ptr
, expander
);
3118 len
= sprintf (sub
, "%d", count
);
3119 gas_assert (len
< 8);
3120 strcpy (sub
+ len
, sub
+ 8);
3121 processed
.len
-= (8 - len
);
3122 sb_add_sb (& many
, & processed
);
3123 sb_kill (& processed
);
3128 sb_add_sb (&many
, &one
);
3132 input_scrub_include_sb (&many
, input_line_pointer
, 1);
3134 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
3137 /* Skip to end of current repeat loop; EXTRA indicates how many additional
3138 input buffers to skip. Assumes that conditionals preceding the loop end
3139 are properly nested.
3141 This function makes it easier to implement a premature "break" out of the
3142 loop. The EXTRA arg accounts for other buffers we might have inserted,
3143 such as line substitutions. */
3146 end_repeat (int extra
)
3148 cond_exit_macro (macro_nest
);
3149 while (extra
-- >= 0)
3150 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
3154 assign_symbol (char *name
, int mode
)
3158 if (name
[0] == '.' && name
[1] == '\0')
3160 /* Turn '. = mumble' into a .org mumble. */
3164 segment
= get_known_segmented_expression (&exp
);
3167 do_org (segment
, &exp
, 0);
3172 if ((symbolP
= symbol_find (name
)) == NULL
3173 && (symbolP
= md_undefined_symbol (name
)) == NULL
)
3175 symbolP
= symbol_find_or_make (name
);
3177 /* When doing symbol listings, play games with dummy fragments living
3178 outside the normal fragment chain to record the file and line info
3180 if (listing
& LISTING_SYMBOLS
)
3182 extern struct list_info_struct
*listing_tail
;
3183 fragS
*dummy_frag
= (fragS
*) xcalloc (1, sizeof (fragS
));
3184 dummy_frag
->line
= listing_tail
;
3185 dummy_frag
->fr_symbol
= symbolP
;
3186 symbol_set_frag (symbolP
, dummy_frag
);
3190 /* "set" symbols are local unless otherwise specified. */
3191 SF_SET_LOCAL (symbolP
);
3195 if (S_IS_DEFINED (symbolP
) || symbol_equated_p (symbolP
))
3197 if ((mode
!= 0 || !S_IS_VOLATILE (symbolP
))
3198 && !S_CAN_BE_REDEFINED (symbolP
))
3200 as_bad (_("symbol `%s' is already defined"), name
);
3201 symbolP
= symbol_clone (symbolP
, 0);
3203 /* If the symbol is volatile, copy the symbol and replace the
3204 original with the copy, so that previous uses of the symbol will
3205 retain the value of the symbol at the point of use. */
3206 else if (S_IS_VOLATILE (symbolP
))
3207 symbolP
= symbol_clone (symbolP
, 1);
3211 S_SET_VOLATILE (symbolP
);
3213 S_SET_FORWARD_REF (symbolP
);
3215 pseudo_set (symbolP
);
3218 /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1,
3219 then this is .equiv, and it is an error if the symbol is already
3220 defined. If EQUIV is -1, the symbol additionally is a forward
3228 /* Especial apologies for the random logic:
3229 this just grew, and could be parsed much more simply!
3231 if ((name
= read_symbol_name ()) == NULL
)
3234 if (*input_line_pointer
!= ',')
3236 as_bad (_("expected comma after \"%s\""), name
);
3237 ignore_rest_of_line ();
3242 input_line_pointer
++;
3243 assign_symbol (name
, equiv
);
3244 demand_empty_rest_of_line ();
3258 #ifdef md_flush_pending_output
3259 md_flush_pending_output ();
3262 #ifdef md_cons_align
3267 stop
= mri_comment_field (&stopc
);
3269 /* In m68k MRI mode, we need to align to a word boundary, unless
3271 if (flag_m68k_mri
&& mult
> 1)
3273 if (now_seg
== absolute_section
)
3275 abs_section_offset
+= abs_section_offset
& 1;
3276 if (line_label
!= NULL
)
3277 S_SET_VALUE (line_label
, abs_section_offset
);
3279 else if (mri_common_symbol
!= NULL
)
3283 mri_val
= S_GET_VALUE (mri_common_symbol
);
3284 if ((mri_val
& 1) != 0)
3286 S_SET_VALUE (mri_common_symbol
, mri_val
+ 1);
3287 if (line_label
!= NULL
)
3289 expressionS
*symexp
;
3291 symexp
= symbol_get_value_expression (line_label
);
3292 know (symexp
->X_op
== O_symbol
);
3293 know (symexp
->X_add_symbol
== mri_common_symbol
);
3294 symexp
->X_add_number
+= 1;
3300 do_align (1, (char *) NULL
, 0, 0);
3301 if (line_label
!= NULL
)
3303 symbol_set_frag (line_label
, frag_now
);
3304 S_SET_VALUE (line_label
, frag_now_fix ());
3314 if (*input_line_pointer
== ',')
3316 ++input_line_pointer
;
3321 val
.X_op
= O_constant
;
3322 val
.X_add_number
= 0;
3325 if (val
.X_op
!= O_constant
3326 || val
.X_add_number
< - 0x80
3327 || val
.X_add_number
> 0xff
3328 || (mult
!= 0 && mult
!= 1 && val
.X_add_number
!= 0))
3330 resolve_expression (&exp
);
3331 if (exp
.X_op
!= O_constant
)
3332 as_bad (_("unsupported variable size or fill value"));
3339 bytes
= mult
* exp
.X_add_number
;
3340 for (i
= 0; i
< exp
.X_add_number
; i
++)
3341 emit_expr (&val
, mult
);
3346 if (now_seg
== absolute_section
|| mri_common_symbol
!= NULL
)
3347 resolve_expression (&exp
);
3349 if (exp
.X_op
== O_constant
)
3353 repeat
= exp
.X_add_number
;
3360 as_warn (_(".space repeat count is zero, ignored"));
3361 else if (repeat
< 0)
3362 as_warn (_(".space repeat count is negative, ignored"));
3366 /* If we are in the absolute section, just bump the offset. */
3367 if (now_seg
== absolute_section
)
3369 abs_section_offset
+= repeat
;
3373 /* If we are secretly in an MRI common section, then
3374 creating space just increases the size of the common
3376 if (mri_common_symbol
!= NULL
)
3378 S_SET_VALUE (mri_common_symbol
,
3379 S_GET_VALUE (mri_common_symbol
) + repeat
);
3384 p
= frag_var (rs_fill
, 1, 1, (relax_substateT
) 0, (symbolS
*) 0,
3385 (offsetT
) repeat
, (char *) 0);
3389 if (now_seg
== absolute_section
)
3391 as_bad (_("space allocation too complex in absolute section"));
3392 subseg_set (text_section
, 0);
3395 if (mri_common_symbol
!= NULL
)
3397 as_bad (_("space allocation too complex in common section"));
3398 mri_common_symbol
= NULL
;
3402 p
= frag_var (rs_space
, 1, 1, (relax_substateT
) 0,
3403 make_expr_symbol (&exp
), (offsetT
) 0, (char *) 0);
3407 *p
= val
.X_add_number
;
3412 /* In MRI mode, after an odd number of bytes, we must align to an
3413 even word boundary, unless the next instruction is a dc.b, ds.b
3415 if (flag_mri
&& (bytes
& 1) != 0)
3416 mri_pending_align
= 1;
3418 demand_empty_rest_of_line ();
3421 mri_comment_end (stop
, stopc
);
3424 /* This is like s_space, but the value is a floating point number with
3425 the given precision. This is for the MRI dcb.s pseudo-op and
3429 s_float_space (int float_type
)
3433 char temp
[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
];
3437 #ifdef md_cons_align
3442 stop
= mri_comment_field (&stopc
);
3444 count
= get_absolute_expression ();
3447 if (*input_line_pointer
!= ',')
3449 as_bad (_("missing value"));
3450 ignore_rest_of_line ();
3452 mri_comment_end (stop
, stopc
);
3456 ++input_line_pointer
;
3460 /* Skip any 0{letter} that may be present. Don't even check if the
3461 * letter is legal. */
3462 if (input_line_pointer
[0] == '0'
3463 && ISALPHA (input_line_pointer
[1]))
3464 input_line_pointer
+= 2;
3466 /* Accept :xxxx, where the x's are hex digits, for a floating point
3467 with the exact digits specified. */
3468 if (input_line_pointer
[0] == ':')
3470 flen
= hex_float (float_type
, temp
);
3473 ignore_rest_of_line ();
3475 mri_comment_end (stop
, stopc
);
3483 err
= md_atof (float_type
, temp
, &flen
);
3484 know (flen
<= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
);
3485 know (err
!= NULL
|| flen
> 0);
3488 as_bad (_("bad floating literal: %s"), err
);
3489 ignore_rest_of_line ();
3491 mri_comment_end (stop
, stopc
);
3496 while (--count
>= 0)
3500 p
= frag_more (flen
);
3501 memcpy (p
, temp
, (unsigned int) flen
);
3504 demand_empty_rest_of_line ();
3507 mri_comment_end (stop
, stopc
);
3510 /* Handle the .struct pseudo-op, as found in MIPS assemblers. */
3513 s_struct (int ignore ATTRIBUTE_UNUSED
)
3519 stop
= mri_comment_field (&stopc
);
3520 abs_section_offset
= get_absolute_expression ();
3521 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
3522 /* The ELF backend needs to know that we are changing sections, so
3523 that .previous works correctly. */
3525 obj_elf_section_change_hook ();
3527 subseg_set (absolute_section
, 0);
3528 demand_empty_rest_of_line ();
3530 mri_comment_end (stop
, stopc
);
3534 s_text (int ignore ATTRIBUTE_UNUSED
)
3538 temp
= get_absolute_expression ();
3539 subseg_set (text_section
, (subsegT
) temp
);
3540 demand_empty_rest_of_line ();
3543 /* .weakref x, y sets x as an alias to y that, as long as y is not
3544 referenced directly, will cause y to become a weak symbol. */
3546 s_weakref (int ignore ATTRIBUTE_UNUSED
)
3553 if ((name
= read_symbol_name ()) == NULL
)
3556 symbolP
= symbol_find_or_make (name
);
3558 if (S_IS_DEFINED (symbolP
) || symbol_equated_p (symbolP
))
3560 if (!S_IS_VOLATILE (symbolP
))
3562 as_bad (_("symbol `%s' is already defined"), name
);
3565 symbolP
= symbol_clone (symbolP
, 1);
3566 S_CLEAR_VOLATILE (symbolP
);
3571 if (*input_line_pointer
!= ',')
3573 as_bad (_("expected comma after \"%s\""), name
);
3577 input_line_pointer
++;
3582 if ((name
= read_symbol_name ()) == NULL
)
3585 if ((symbolP2
= symbol_find_noref (name
, 1)) == NULL
3586 && (symbolP2
= md_undefined_symbol (name
)) == NULL
)
3588 symbolP2
= symbol_find_or_make (name
);
3589 S_SET_WEAKREFD (symbolP2
);
3593 symbolS
*symp
= symbolP2
;
3595 while (S_IS_WEAKREFR (symp
) && symp
!= symbolP
)
3597 expressionS
*expP
= symbol_get_value_expression (symp
);
3599 gas_assert (expP
->X_op
== O_symbol
3600 && expP
->X_add_number
== 0);
3601 symp
= expP
->X_add_symbol
;
3603 if (symp
== symbolP
)
3607 loop
= concat (S_GET_NAME (symbolP
),
3608 " => ", S_GET_NAME (symbolP2
), (const char *) NULL
);
3611 while (symp
!= symbolP
)
3613 char *old_loop
= loop
;
3615 symp
= symbol_get_value_expression (symp
)->X_add_symbol
;
3616 loop
= concat (loop
, " => ", S_GET_NAME (symp
),
3617 (const char *) NULL
);
3621 as_bad (_("%s: would close weakref loop: %s"),
3622 S_GET_NAME (symbolP
), loop
);
3626 ignore_rest_of_line ();
3630 /* Short-circuiting instead of just checking here might speed
3631 things up a tiny little bit, but loop error messages would
3632 miss intermediate links. */
3633 /* symbolP2 = symp; */
3636 memset (&exp
, 0, sizeof (exp
));
3637 exp
.X_op
= O_symbol
;
3638 exp
.X_add_symbol
= symbolP2
;
3640 S_SET_SEGMENT (symbolP
, undefined_section
);
3641 symbol_set_value_expression (symbolP
, &exp
);
3642 symbol_set_frag (symbolP
, &zero_address_frag
);
3643 S_SET_WEAKREFR (symbolP
);
3645 demand_empty_rest_of_line ();
3650 ignore_rest_of_line ();
3656 /* Verify that we are at the end of a line. If not, issue an error and
3660 demand_empty_rest_of_line (void)
3663 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
3664 input_line_pointer
++;
3667 if (ISPRINT (*input_line_pointer
))
3668 as_bad (_("junk at end of line, first unrecognized character is `%c'"),
3669 *input_line_pointer
);
3671 as_bad (_("junk at end of line, first unrecognized character valued 0x%x"),
3672 *input_line_pointer
);
3673 ignore_rest_of_line ();
3676 /* Return pointing just after end-of-line. */
3677 know (is_end_of_line
[(unsigned char) input_line_pointer
[-1]]);
3680 /* Silently advance to the end of line. Use this after already having
3681 issued an error about something bad. */
3684 ignore_rest_of_line (void)
3686 while (input_line_pointer
< buffer_limit
3687 && !is_end_of_line
[(unsigned char) *input_line_pointer
])
3688 input_line_pointer
++;
3690 input_line_pointer
++;
3692 /* Return pointing just after end-of-line. */
3693 know (is_end_of_line
[(unsigned char) input_line_pointer
[-1]]);
3696 /* Sets frag for given symbol to zero_address_frag, except when the
3697 symbol frag is already set to a dummy listing frag. */
3700 set_zero_frag (symbolS
*symbolP
)
3702 if (symbol_get_frag (symbolP
)->fr_type
!= rs_dummy
)
3703 symbol_set_frag (symbolP
, &zero_address_frag
);
3706 /* In: Pointer to a symbol.
3707 Input_line_pointer->expression.
3709 Out: Input_line_pointer->just after any whitespace after expression.
3710 Tried to set symbol to value of expression.
3711 Will change symbols type, value, and frag; */
3714 pseudo_set (symbolS
*symbolP
)
3719 know (symbolP
); /* NULL pointer is logic error. */
3721 if (!S_IS_FORWARD_REF (symbolP
))
3722 (void) expression (&exp
);
3724 (void) deferred_expression (&exp
);
3726 if (exp
.X_op
== O_illegal
)
3727 as_bad (_("illegal expression"));
3728 else if (exp
.X_op
== O_absent
)
3729 as_bad (_("missing expression"));
3730 else if (exp
.X_op
== O_big
)
3732 if (exp
.X_add_number
> 0)
3733 as_bad (_("bignum invalid"));
3735 as_bad (_("floating point number invalid"));
3737 else if (exp
.X_op
== O_subtract
3738 && !S_IS_FORWARD_REF (symbolP
)
3739 && SEG_NORMAL (S_GET_SEGMENT (exp
.X_add_symbol
))
3740 && (symbol_get_frag (exp
.X_add_symbol
)
3741 == symbol_get_frag (exp
.X_op_symbol
)))
3743 exp
.X_op
= O_constant
;
3744 exp
.X_add_number
= (S_GET_VALUE (exp
.X_add_symbol
)
3745 - S_GET_VALUE (exp
.X_op_symbol
));
3748 if (symbol_section_p (symbolP
))
3750 as_bad ("attempt to set value of section symbol");
3759 exp
.X_add_number
= 0;
3762 S_SET_SEGMENT (symbolP
, absolute_section
);
3763 S_SET_VALUE (symbolP
, (valueT
) exp
.X_add_number
);
3764 set_zero_frag (symbolP
);
3768 #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
3769 if (S_IS_EXTERNAL (symbolP
))
3771 as_bad ("can't equate global symbol `%s' with register name",
3772 S_GET_NAME (symbolP
));
3776 S_SET_SEGMENT (symbolP
, reg_section
);
3777 S_SET_VALUE (symbolP
, (valueT
) exp
.X_add_number
);
3778 set_zero_frag (symbolP
);
3779 symbol_get_value_expression (symbolP
)->X_op
= O_register
;
3783 seg
= S_GET_SEGMENT (exp
.X_add_symbol
);
3784 /* For x=undef+const, create an expression symbol.
3785 For x=x+const, just update x except when x is an undefined symbol
3786 For x=defined+const, evaluate x. */
3787 if (symbolP
== exp
.X_add_symbol
3788 && (seg
!= undefined_section
3789 || !symbol_constant_p (symbolP
)))
3791 *symbol_X_add_number (symbolP
) += exp
.X_add_number
;
3794 else if (!S_IS_FORWARD_REF (symbolP
) && seg
!= undefined_section
)
3796 symbolS
*s
= exp
.X_add_symbol
;
3798 if (S_IS_COMMON (s
))
3799 as_bad (_("`%s' can't be equated to common symbol '%s'"),
3800 S_GET_NAME (symbolP
), S_GET_NAME (s
));
3802 S_SET_SEGMENT (symbolP
, seg
);
3803 S_SET_VALUE (symbolP
, exp
.X_add_number
+ S_GET_VALUE (s
));
3804 symbol_set_frag (symbolP
, symbol_get_frag (s
));
3805 copy_symbol_attributes (symbolP
, s
);
3808 S_SET_SEGMENT (symbolP
, undefined_section
);
3809 symbol_set_value_expression (symbolP
, &exp
);
3810 copy_symbol_attributes (symbolP
, exp
.X_add_symbol
);
3811 set_zero_frag (symbolP
);
3815 /* The value is some complex expression. */
3816 S_SET_SEGMENT (symbolP
, expr_section
);
3817 symbol_set_value_expression (symbolP
, &exp
);
3818 set_zero_frag (symbolP
);
3825 CONStruct more frag of .bytes, or .words etc.
3826 Should need_pass_2 be 1 then emit no frag(s).
3827 This understands EXPRESSIONS.
3831 This has a split personality. We use expression() to read the
3832 value. We can detect if the value won't fit in a byte or word.
3833 But we can't detect if expression() discarded significant digits
3834 in the case of a long. Not worth the crocks required to fix it. */
3836 /* Select a parser for cons expressions. */
3838 /* Some targets need to parse the expression in various fancy ways.
3839 You can define TC_PARSE_CONS_EXPRESSION to do whatever you like
3840 (for example, the HPPA does this). Otherwise, you can define
3841 BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or
3842 REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these
3843 are defined, which is the normal case, then only simple expressions
3848 parse_mri_cons (expressionS
*exp
, unsigned int nbytes
);
3851 #ifndef TC_PARSE_CONS_EXPRESSION
3852 #ifdef BITFIELD_CONS_EXPRESSIONS
3853 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)
3855 parse_bitfield_cons (expressionS
*exp
, unsigned int nbytes
);
3857 #ifdef REPEAT_CONS_EXPRESSIONS
3858 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)
3860 parse_repeat_cons (expressionS
*exp
, unsigned int nbytes
);
3863 /* If we haven't gotten one yet, just call expression. */
3864 #ifndef TC_PARSE_CONS_EXPRESSION
3865 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)
3870 do_parse_cons_expression (expressionS
*exp
,
3871 int nbytes ATTRIBUTE_UNUSED
)
3873 TC_PARSE_CONS_EXPRESSION (exp
, nbytes
);
3877 /* Worker to do .byte etc statements.
3878 Clobbers input_line_pointer and checks end-of-line. */
3881 cons_worker (int nbytes
, /* 1=.byte, 2=.word, 4=.long. */
3889 #ifdef md_flush_pending_output
3890 md_flush_pending_output ();
3894 stop
= mri_comment_field (&stopc
);
3896 if (is_it_end_of_statement ())
3898 demand_empty_rest_of_line ();
3900 mri_comment_end (stop
, stopc
);
3904 #ifdef TC_ADDRESS_BYTES
3906 nbytes
= TC_ADDRESS_BYTES ();
3909 #ifdef md_cons_align
3910 md_cons_align (nbytes
);
3918 parse_mri_cons (&exp
, (unsigned int) nbytes
);
3922 if (*input_line_pointer
== '"')
3924 as_bad (_("unexpected `\"' in expression"));
3925 ignore_rest_of_line ();
3928 TC_PARSE_CONS_EXPRESSION (&exp
, (unsigned int) nbytes
);
3933 if (exp
.X_op
== O_symbol
)
3934 exp
.X_op
= O_symbol_rva
;
3936 as_fatal (_("rva without symbol"));
3938 emit_expr (&exp
, (unsigned int) nbytes
);
3941 while (*input_line_pointer
++ == ',');
3943 /* In MRI mode, after an odd number of bytes, we must align to an
3944 even word boundary, unless the next instruction is a dc.b, ds.b
3946 if (flag_mri
&& nbytes
== 1 && (c
& 1) != 0)
3947 mri_pending_align
= 1;
3949 input_line_pointer
--; /* Put terminator back into stream. */
3951 demand_empty_rest_of_line ();
3954 mri_comment_end (stop
, stopc
);
3960 cons_worker (size
, 0);
3966 cons_worker (size
, 1);
3969 /* .reloc offset, reloc_name, symbol+addend. */
3972 s_reloc (int ignore ATTRIBUTE_UNUSED
)
3979 struct reloc_list
*reloc
;
3981 reloc
= (struct reloc_list
*) xmalloc (sizeof (*reloc
));
3984 stop
= mri_comment_field (&stopc
);
3993 as_bad (_("missing or bad offset expression"));
3996 exp
.X_add_symbol
= section_symbol (now_seg
);
3997 exp
.X_op
= O_symbol
;
4000 if (exp
.X_add_number
== 0)
4002 reloc
->u
.a
.offset_sym
= exp
.X_add_symbol
;
4007 reloc
->u
.a
.offset_sym
= make_expr_symbol (&exp
);
4012 if (*input_line_pointer
!= ',')
4014 as_bad (_("missing reloc type"));
4018 ++input_line_pointer
;
4020 r_name
= input_line_pointer
;
4021 c
= get_symbol_end ();
4022 reloc
->u
.a
.howto
= bfd_reloc_name_lookup (stdoutput
, r_name
);
4023 *input_line_pointer
= c
;
4024 if (reloc
->u
.a
.howto
== NULL
)
4026 as_bad (_("unrecognized reloc type"));
4030 exp
.X_op
= O_absent
;
4032 if (*input_line_pointer
== ',')
4034 ++input_line_pointer
;
4042 as_bad (_("bad reloc expression"));
4044 ignore_rest_of_line ();
4047 mri_comment_end (stop
, stopc
);
4050 reloc
->u
.a
.sym
= NULL
;
4051 reloc
->u
.a
.addend
= 0;
4054 reloc
->u
.a
.sym
= NULL
;
4055 reloc
->u
.a
.addend
= exp
.X_add_number
;
4058 reloc
->u
.a
.sym
= exp
.X_add_symbol
;
4059 reloc
->u
.a
.addend
= exp
.X_add_number
;
4062 reloc
->u
.a
.sym
= make_expr_symbol (&exp
);
4063 reloc
->u
.a
.addend
= 0;
4067 as_where (&reloc
->file
, &reloc
->line
);
4068 reloc
->next
= reloc_list
;
4071 demand_empty_rest_of_line ();
4073 mri_comment_end (stop
, stopc
);
4076 /* Put the contents of expression EXP into the object file using
4077 NBYTES bytes. If need_pass_2 is 1, this does nothing. */
4080 emit_expr (expressionS
*exp
, unsigned int nbytes
)
4084 valueT extra_digit
= 0;
4086 /* Don't do anything if we are going to make another pass. */
4091 dot_value
= frag_now_fix ();
4092 dot_frag
= frag_now
;
4096 /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will
4097 appear as a four byte positive constant in the .line section,
4098 followed by a 2 byte 0xffff. Look for that case here. */
4100 static int dwarf_line
= -1;
4102 if (strcmp (segment_name (now_seg
), ".line") != 0)
4104 else if (dwarf_line
>= 0
4106 && exp
->X_op
== O_constant
4107 && (exp
->X_add_number
== -1 || exp
->X_add_number
== 0xffff))
4108 listing_source_line ((unsigned int) dwarf_line
);
4109 else if (nbytes
== 4
4110 && exp
->X_op
== O_constant
4111 && exp
->X_add_number
>= 0)
4112 dwarf_line
= exp
->X_add_number
;
4117 /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will
4118 appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte
4119 AT_sibling (0x12) followed by a four byte address of the sibling
4120 followed by a 2 byte AT_name (0x38) followed by the name of the
4121 file. We look for that case here. */
4123 static int dwarf_file
= 0;
4125 if (strcmp (segment_name (now_seg
), ".debug") != 0)
4127 else if (dwarf_file
== 0
4129 && exp
->X_op
== O_constant
4130 && exp
->X_add_number
== 0x11)
4132 else if (dwarf_file
== 1
4134 && exp
->X_op
== O_constant
4135 && exp
->X_add_number
== 0x12)
4137 else if (dwarf_file
== 2
4140 else if (dwarf_file
== 3
4142 && exp
->X_op
== O_constant
4143 && exp
->X_add_number
== 0x38)
4148 /* The variable dwarf_file_string tells stringer that the string
4149 may be the name of the source file. */
4150 if (dwarf_file
== 4)
4151 dwarf_file_string
= 1;
4153 dwarf_file_string
= 0;
4158 if (check_eh_frame (exp
, &nbytes
))
4163 /* Allow `.word 0' in the absolute section. */
4164 if (now_seg
== absolute_section
)
4166 if (op
!= O_constant
|| exp
->X_add_number
!= 0)
4167 as_bad (_("attempt to store value in absolute section"));
4168 abs_section_offset
+= nbytes
;
4172 /* Handle a negative bignum. */
4174 && exp
->X_add_number
== 0
4175 && symbol_get_value_expression (exp
->X_add_symbol
)->X_op
== O_big
4176 && symbol_get_value_expression (exp
->X_add_symbol
)->X_add_number
> 0)
4179 unsigned long carry
;
4181 exp
= symbol_get_value_expression (exp
->X_add_symbol
);
4183 /* Negate the bignum: one's complement each digit and add 1. */
4185 for (i
= 0; i
< exp
->X_add_number
; i
++)
4189 next
= (((~(generic_bignum
[i
] & LITTLENUM_MASK
))
4192 generic_bignum
[i
] = next
& LITTLENUM_MASK
;
4193 carry
= next
>> LITTLENUM_NUMBER_OF_BITS
;
4196 /* We can ignore any carry out, because it will be handled by
4197 extra_digit if it is needed. */
4199 extra_digit
= (valueT
) -1;
4203 if (op
== O_absent
|| op
== O_illegal
)
4205 as_warn (_("zero assumed for missing expression"));
4206 exp
->X_add_number
= 0;
4209 else if (op
== O_big
&& exp
->X_add_number
<= 0)
4211 as_bad (_("floating point number invalid"));
4212 exp
->X_add_number
= 0;
4215 else if (op
== O_register
)
4217 as_warn (_("register value used as expression"));
4221 p
= frag_more ((int) nbytes
);
4223 #ifndef WORKING_DOT_WORD
4224 /* If we have the difference of two symbols in a word, save it on
4225 the broken_words list. See the code in write.c. */
4226 if (op
== O_subtract
&& nbytes
== 2)
4228 struct broken_word
*x
;
4230 x
= (struct broken_word
*) xmalloc (sizeof (struct broken_word
));
4231 x
->next_broken_word
= broken_words
;
4234 x
->subseg
= now_subseg
;
4236 x
->word_goes_here
= p
;
4238 x
->add
= exp
->X_add_symbol
;
4239 x
->sub
= exp
->X_op_symbol
;
4240 x
->addnum
= exp
->X_add_number
;
4248 /* If we have an integer, but the number of bytes is too large to
4249 pass to md_number_to_chars, handle it as a bignum. */
4250 if (op
== O_constant
&& nbytes
> sizeof (valueT
))
4252 extra_digit
= exp
->X_unsigned
? 0 : -1;
4253 convert_to_bignum (exp
);
4257 if (op
== O_constant
)
4265 /* JF << of >= number of bits in the object is undefined. In
4266 particular SPARC (Sun 4) has problems. */
4267 if (nbytes
>= sizeof (valueT
))
4270 if (nbytes
> sizeof (valueT
))
4273 hibit
= (valueT
) 1 << (nbytes
* BITS_PER_CHAR
- 1);
4277 /* Don't store these bits. */
4278 mask
= ~(valueT
) 0 << (BITS_PER_CHAR
* nbytes
);
4279 hibit
= (valueT
) 1 << (nbytes
* BITS_PER_CHAR
- 1);
4282 unmask
= ~mask
; /* Do store these bits. */
4285 "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
4286 mask
= ~(unmask
>> 1); /* Includes sign bit now. */
4289 get
= exp
->X_add_number
;
4291 if ((get
& mask
) != 0
4292 && ((get
& mask
) != mask
4293 || (get
& hibit
) == 0))
4294 { /* Leading bits contain both 0s & 1s. */
4295 #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG
4297 as_warn (_("value 0x%llx truncated to 0x%llx"),
4298 (unsigned long long) get
, (unsigned long long) use
);
4300 as_warn (_("value 0x%I64x truncated to 0x%I64x"),
4301 (unsigned long long) get
, (unsigned long long) use
);
4304 as_warn (_("value 0x%lx truncated to 0x%lx"),
4305 (unsigned long) get
, (unsigned long) use
);
4308 /* Put bytes in right order. */
4309 md_number_to_chars (p
, use
, (int) nbytes
);
4311 else if (op
== O_big
)
4314 LITTLENUM_TYPE
*nums
;
4316 size
= exp
->X_add_number
* CHARS_PER_LITTLENUM
;
4319 int i
= nbytes
/ CHARS_PER_LITTLENUM
;
4322 LITTLENUM_TYPE sign
= 0;
4323 if ((generic_bignum
[--i
]
4324 & (1 << (LITTLENUM_NUMBER_OF_BITS
- 1))) != 0)
4325 sign
= ~(LITTLENUM_TYPE
) 0;
4326 while (++i
< exp
->X_add_number
)
4327 if (generic_bignum
[i
] != sign
)
4330 if (i
< exp
->X_add_number
)
4331 as_warn (_("bignum truncated to %d bytes"), nbytes
);
4337 md_number_to_chars (p
, (valueT
) generic_bignum
[0], 1);
4340 know (nbytes
% CHARS_PER_LITTLENUM
== 0);
4342 if (target_big_endian
)
4344 while (nbytes
> size
)
4346 md_number_to_chars (p
, extra_digit
, CHARS_PER_LITTLENUM
);
4347 nbytes
-= CHARS_PER_LITTLENUM
;
4348 p
+= CHARS_PER_LITTLENUM
;
4351 nums
= generic_bignum
+ size
/ CHARS_PER_LITTLENUM
;
4352 while (size
>= CHARS_PER_LITTLENUM
)
4355 md_number_to_chars (p
, (valueT
) *nums
, CHARS_PER_LITTLENUM
);
4356 size
-= CHARS_PER_LITTLENUM
;
4357 p
+= CHARS_PER_LITTLENUM
;
4362 nums
= generic_bignum
;
4363 while (size
>= CHARS_PER_LITTLENUM
)
4365 md_number_to_chars (p
, (valueT
) *nums
, CHARS_PER_LITTLENUM
);
4367 size
-= CHARS_PER_LITTLENUM
;
4368 p
+= CHARS_PER_LITTLENUM
;
4369 nbytes
-= CHARS_PER_LITTLENUM
;
4372 while (nbytes
>= CHARS_PER_LITTLENUM
)
4374 md_number_to_chars (p
, extra_digit
, CHARS_PER_LITTLENUM
);
4375 nbytes
-= CHARS_PER_LITTLENUM
;
4376 p
+= CHARS_PER_LITTLENUM
;
4381 emit_expr_fix (exp
, nbytes
, frag_now
, p
);
4385 emit_expr_fix (expressionS
*exp
, unsigned int nbytes
, fragS
*frag
, char *p
)
4387 memset (p
, 0, nbytes
);
4389 /* Generate a fixS to record the symbol value. */
4391 #ifdef TC_CONS_FIX_NEW
4392 TC_CONS_FIX_NEW (frag
, p
- frag
->fr_literal
, nbytes
, exp
);
4395 bfd_reloc_code_real_type r
;
4415 as_bad (_("unsupported BFD relocation size %u"), nbytes
);
4419 fix_new_exp (frag
, p
- frag
->fr_literal
, (int) nbytes
, exp
,
4425 #ifdef BITFIELD_CONS_EXPRESSIONS
4427 /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as
4428 w:x,y:z, where w and y are bitwidths and x and y are values. They
4429 then pack them all together. We do a little better in that we allow
4430 them in words, longs, etc. and we'll pack them in target byte order
4433 The rules are: pack least significant bit first, if a field doesn't
4434 entirely fit, put it in the next unit. Overflowing the bitfield is
4435 explicitly *not* even a warning. The bitwidth should be considered
4438 To use this function the tc-XXX.h file should define
4439 BITFIELD_CONS_EXPRESSIONS. */
4442 parse_bitfield_cons (exp
, nbytes
)
4444 unsigned int nbytes
;
4446 unsigned int bits_available
= BITS_PER_CHAR
* nbytes
;
4447 char *hold
= input_line_pointer
;
4449 (void) expression (exp
);
4451 if (*input_line_pointer
== ':')
4458 unsigned long width
;
4460 if (*input_line_pointer
!= ':')
4462 input_line_pointer
= hold
;
4464 } /* Next piece is not a bitfield. */
4466 /* In the general case, we can't allow
4467 full expressions with symbol
4468 differences and such. The relocation
4469 entries for symbols not defined in this
4470 assembly would require arbitrary field
4471 widths, positions, and masks which most
4472 of our current object formats don't
4475 In the specific case where a symbol
4476 *is* defined in this assembly, we
4477 *could* build fixups and track it, but
4478 this could lead to confusion for the
4479 backends. I'm lazy. I'll take any
4480 SEG_ABSOLUTE. I think that means that
4481 you can use a previous .set or
4482 .equ type symbol. xoxorich. */
4484 if (exp
->X_op
== O_absent
)
4486 as_warn (_("using a bit field width of zero"));
4487 exp
->X_add_number
= 0;
4488 exp
->X_op
= O_constant
;
4489 } /* Implied zero width bitfield. */
4491 if (exp
->X_op
!= O_constant
)
4493 *input_line_pointer
= '\0';
4494 as_bad (_("field width \"%s\" too complex for a bitfield"), hold
);
4495 *input_line_pointer
= ':';
4496 demand_empty_rest_of_line ();
4498 } /* Too complex. */
4500 if ((width
= exp
->X_add_number
) > (BITS_PER_CHAR
* nbytes
))
4502 as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"),
4503 width
, nbytes
, (BITS_PER_CHAR
* nbytes
));
4504 width
= BITS_PER_CHAR
* nbytes
;
4507 if (width
> bits_available
)
4509 /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */
4510 input_line_pointer
= hold
;
4511 exp
->X_add_number
= value
;
4516 hold
= ++input_line_pointer
;
4518 (void) expression (exp
);
4519 if (exp
->X_op
!= O_constant
)
4521 char cache
= *input_line_pointer
;
4523 *input_line_pointer
= '\0';
4524 as_bad (_("field value \"%s\" too complex for a bitfield"), hold
);
4525 *input_line_pointer
= cache
;
4526 demand_empty_rest_of_line ();
4528 } /* Too complex. */
4530 value
|= ((~(-1 << width
) & exp
->X_add_number
)
4531 << ((BITS_PER_CHAR
* nbytes
) - bits_available
));
4533 if ((bits_available
-= width
) == 0
4534 || is_it_end_of_statement ()
4535 || *input_line_pointer
!= ',')
4538 } /* All the bitfields we're gonna get. */
4540 hold
= ++input_line_pointer
;
4541 (void) expression (exp
);
4544 exp
->X_add_number
= value
;
4545 exp
->X_op
= O_constant
;
4546 exp
->X_unsigned
= 1;
4550 #endif /* BITFIELD_CONS_EXPRESSIONS */
4552 /* Handle an MRI style string expression. */
4556 parse_mri_cons (exp
, nbytes
)
4558 unsigned int nbytes
;
4560 if (*input_line_pointer
!= '\''
4561 && (input_line_pointer
[1] != '\''
4562 || (*input_line_pointer
!= 'A'
4563 && *input_line_pointer
!= 'E')))
4564 TC_PARSE_CONS_EXPRESSION (exp
, nbytes
);
4568 unsigned int result
= 0;
4570 /* An MRI style string. Cut into as many bytes as will fit into
4571 a nbyte chunk, left justify if necessary, and separate with
4572 commas so we can try again later. */
4573 if (*input_line_pointer
== 'A')
4574 ++input_line_pointer
;
4575 else if (*input_line_pointer
== 'E')
4577 as_bad (_("EBCDIC constants are not supported"));
4578 ++input_line_pointer
;
4581 input_line_pointer
++;
4582 for (scan
= 0; scan
< nbytes
; scan
++)
4584 if (*input_line_pointer
== '\'')
4586 if (input_line_pointer
[1] == '\'')
4588 input_line_pointer
++;
4593 result
= (result
<< 8) | (*input_line_pointer
++);
4597 while (scan
< nbytes
)
4603 /* Create correct expression. */
4604 exp
->X_op
= O_constant
;
4605 exp
->X_add_number
= result
;
4607 /* Fake it so that we can read the next char too. */
4608 if (input_line_pointer
[0] != '\'' ||
4609 (input_line_pointer
[0] == '\'' && input_line_pointer
[1] == '\''))
4611 input_line_pointer
-= 2;
4612 input_line_pointer
[0] = ',';
4613 input_line_pointer
[1] = '\'';
4616 input_line_pointer
++;
4619 #endif /* TC_M68K */
4621 #ifdef REPEAT_CONS_EXPRESSIONS
4623 /* Parse a repeat expression for cons. This is used by the MIPS
4624 assembler. The format is NUMBER:COUNT; NUMBER appears in the
4625 object file COUNT times.
4627 To use this for a target, define REPEAT_CONS_EXPRESSIONS. */
4630 parse_repeat_cons (exp
, nbytes
)
4632 unsigned int nbytes
;
4639 if (*input_line_pointer
!= ':')
4641 /* No repeat count. */
4645 ++input_line_pointer
;
4646 expression (&count
);
4647 if (count
.X_op
!= O_constant
4648 || count
.X_add_number
<= 0)
4650 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4654 /* The cons function is going to output this expression once. So we
4655 output it count - 1 times. */
4656 for (i
= count
.X_add_number
- 1; i
> 0; i
--)
4657 emit_expr (exp
, nbytes
);
4660 #endif /* REPEAT_CONS_EXPRESSIONS */
4662 /* Parse a floating point number represented as a hex constant. This
4663 permits users to specify the exact bits they want in the floating
4667 hex_float (int float_type
, char *bytes
)
4699 as_bad (_("unknown floating type type '%c'"), float_type
);
4703 /* It would be nice if we could go through expression to parse the
4704 hex constant, but if we get a bignum it's a pain to sort it into
4705 the buffer correctly. */
4707 while (hex_p (*input_line_pointer
) || *input_line_pointer
== '_')
4711 /* The MRI assembler accepts arbitrary underscores strewn about
4712 through the hex constant, so we ignore them as well. */
4713 if (*input_line_pointer
== '_')
4715 ++input_line_pointer
;
4721 as_warn (_("floating point constant too large"));
4724 d
= hex_value (*input_line_pointer
) << 4;
4725 ++input_line_pointer
;
4726 while (*input_line_pointer
== '_')
4727 ++input_line_pointer
;
4728 if (hex_p (*input_line_pointer
))
4730 d
+= hex_value (*input_line_pointer
);
4731 ++input_line_pointer
;
4733 if (target_big_endian
)
4736 bytes
[length
- i
- 1] = d
;
4742 if (target_big_endian
)
4743 memset (bytes
+ i
, 0, length
- i
);
4745 memset (bytes
, 0, length
- i
);
4753 CONStruct some more frag chars of .floats .ffloats etc.
4754 Makes 0 or more new frags.
4755 If need_pass_2 == 1, no frags are emitted.
4756 This understands only floating literals, not expressions. Sorry.
4758 A floating constant is defined by atof_generic(), except it is preceded
4759 by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
4760 reading, I decided to be incompatible. This always tries to give you
4761 rounded bits to the precision of the pseudo-op. Former AS did premature
4762 truncation, restored noisy bits instead of trailing 0s AND gave you
4763 a choice of 2 flavours of noise according to which of 2 floating-point
4764 scanners you directed AS to use.
4766 In: input_line_pointer->whitespace before, or '0' of flonum. */
4769 float_cons (/* Clobbers input_line-pointer, checks end-of-line. */
4770 int float_type
/* 'f':.ffloat ... 'F':.float ... */)
4773 int length
; /* Number of chars in an object. */
4774 char *err
; /* Error from scanning floating literal. */
4775 char temp
[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
];
4777 if (is_it_end_of_statement ())
4779 demand_empty_rest_of_line ();
4783 #ifdef md_flush_pending_output
4784 md_flush_pending_output ();
4787 #ifdef md_cons_align
4793 /* input_line_pointer->1st char of a flonum (we hope!). */
4796 /* Skip any 0{letter} that may be present. Don't even check if the
4797 letter is legal. Someone may invent a "z" format and this routine
4798 has no use for such information. Lusers beware: you get
4799 diagnostics if your input is ill-conditioned. */
4800 if (input_line_pointer
[0] == '0'
4801 && ISALPHA (input_line_pointer
[1]))
4802 input_line_pointer
+= 2;
4804 /* Accept :xxxx, where the x's are hex digits, for a floating
4805 point with the exact digits specified. */
4806 if (input_line_pointer
[0] == ':')
4808 ++input_line_pointer
;
4809 length
= hex_float (float_type
, temp
);
4812 ignore_rest_of_line ();
4818 err
= md_atof (float_type
, temp
, &length
);
4819 know (length
<= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT
);
4820 know (err
!= NULL
|| length
> 0);
4823 as_bad (_("bad floating literal: %s"), err
);
4824 ignore_rest_of_line ();
4835 #ifdef REPEAT_CONS_EXPRESSIONS
4836 if (*input_line_pointer
== ':')
4838 expressionS count_exp
;
4840 ++input_line_pointer
;
4841 expression (&count_exp
);
4843 if (count_exp
.X_op
!= O_constant
4844 || count_exp
.X_add_number
<= 0)
4845 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4847 count
= count_exp
.X_add_number
;
4851 while (--count
>= 0)
4853 p
= frag_more (length
);
4854 memcpy (p
, temp
, (unsigned int) length
);
4859 while (*input_line_pointer
++ == ',');
4861 /* Put terminator back into stream. */
4862 --input_line_pointer
;
4863 demand_empty_rest_of_line ();
4866 /* Return the size of a LEB128 value. */
4869 sizeof_sleb128 (offsetT value
)
4876 byte
= (value
& 0x7f);
4877 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
4878 Fortunately, we can structure things so that the extra work reduces
4879 to a noop on systems that do things "properly". */
4880 value
= (value
>> 7) | ~(-(offsetT
)1 >> 7);
4883 while (!(((value
== 0) && ((byte
& 0x40) == 0))
4884 || ((value
== -1) && ((byte
& 0x40) != 0))));
4890 sizeof_uleb128 (valueT value
)
4905 sizeof_leb128 (valueT value
, int sign
)
4908 return sizeof_sleb128 ((offsetT
) value
);
4910 return sizeof_uleb128 (value
);
4913 /* Output a LEB128 value. */
4916 output_sleb128 (char *p
, offsetT value
)
4923 unsigned byte
= (value
& 0x7f);
4925 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
4926 Fortunately, we can structure things so that the extra work reduces
4927 to a noop on systems that do things "properly". */
4928 value
= (value
>> 7) | ~(-(offsetT
)1 >> 7);
4930 more
= !((((value
== 0) && ((byte
& 0x40) == 0))
4931 || ((value
== -1) && ((byte
& 0x40) != 0))));
4943 output_uleb128 (char *p
, valueT value
)
4949 unsigned byte
= (value
& 0x7f);
4952 /* More bytes to follow. */
4963 output_leb128 (char *p
, valueT value
, int sign
)
4966 return output_sleb128 (p
, (offsetT
) value
);
4968 return output_uleb128 (p
, value
);
4971 /* Do the same for bignums. We combine sizeof with output here in that
4972 we don't output for NULL values of P. It isn't really as critical as
4973 for "normal" values that this be streamlined. */
4976 output_big_sleb128 (char *p
, LITTLENUM_TYPE
*bignum
, int size
)
4983 /* Strip leading sign extensions off the bignum. */
4985 && bignum
[size
- 1] == LITTLENUM_MASK
4986 && bignum
[size
- 2] > LITTLENUM_MASK
/ 2)
4991 /* OR in the next part of the littlenum. */
4992 val
|= (*bignum
<< loaded
);
4993 loaded
+= LITTLENUM_NUMBER_OF_BITS
;
4997 /* Add bytes until there are less than 7 bits left in VAL
4998 or until every non-sign bit has been written. */
5005 || val
!= ((byte
& 0x40) == 0 ? 0 : ((valueT
) 1 << loaded
) - 1))
5012 while ((byte
& 0x80) != 0 && loaded
>= 7);
5016 /* Mop up any left-over bits (of which there will be less than 7). */
5017 if ((byte
& 0x80) != 0)
5019 /* Sign-extend VAL. */
5020 if (val
& (1 << (loaded
- 1)))
5021 val
|= ~0 << loaded
;
5031 output_big_uleb128 (char *p
, LITTLENUM_TYPE
*bignum
, int size
)
5038 /* Strip leading zeros off the bignum. */
5039 /* XXX: Is this needed? */
5040 while (size
> 0 && bignum
[size
- 1] == 0)
5045 if (loaded
< 7 && size
> 0)
5047 val
|= (*bignum
<< loaded
);
5048 loaded
+= 8 * CHARS_PER_LITTLENUM
;
5057 if (size
> 0 || val
)
5064 while (byte
& 0x80);
5070 output_big_leb128 (char *p
, LITTLENUM_TYPE
*bignum
, int size
, int sign
)
5073 return output_big_sleb128 (p
, bignum
, size
);
5075 return output_big_uleb128 (p
, bignum
, size
);
5078 /* Generate the appropriate fragments for a given expression to emit a
5082 emit_leb128_expr (expressionS
*exp
, int sign
)
5084 operatorT op
= exp
->X_op
;
5085 unsigned int nbytes
;
5087 if (op
== O_absent
|| op
== O_illegal
)
5089 as_warn (_("zero assumed for missing expression"));
5090 exp
->X_add_number
= 0;
5093 else if (op
== O_big
&& exp
->X_add_number
<= 0)
5095 as_bad (_("floating point number invalid"));
5096 exp
->X_add_number
= 0;
5099 else if (op
== O_register
)
5101 as_warn (_("register value used as expression"));
5104 else if (op
== O_constant
5106 && (exp
->X_add_number
< 0) != !exp
->X_unsigned
)
5108 /* We're outputting a signed leb128 and the sign of X_add_number
5109 doesn't reflect the sign of the original value. Convert EXP
5110 to a correctly-extended bignum instead. */
5111 convert_to_bignum (exp
);
5115 /* Let check_eh_frame know that data is being emitted. nbytes == -1 is
5116 a signal that this is leb128 data. It shouldn't optimize this away. */
5117 nbytes
= (unsigned int) -1;
5118 if (check_eh_frame (exp
, &nbytes
))
5121 /* Let the backend know that subsequent data may be byte aligned. */
5122 #ifdef md_cons_align
5126 if (op
== O_constant
)
5128 /* If we've got a constant, emit the thing directly right now. */
5130 valueT value
= exp
->X_add_number
;
5134 size
= sizeof_leb128 (value
, sign
);
5135 p
= frag_more (size
);
5136 output_leb128 (p
, value
, sign
);
5138 else if (op
== O_big
)
5140 /* O_big is a different sort of constant. */
5145 size
= output_big_leb128 (NULL
, generic_bignum
, exp
->X_add_number
, sign
);
5146 p
= frag_more (size
);
5147 output_big_leb128 (p
, generic_bignum
, exp
->X_add_number
, sign
);
5151 /* Otherwise, we have to create a variable sized fragment and
5152 resolve things later. */
5154 frag_var (rs_leb128
, sizeof_uleb128 (~(valueT
) 0), 0, sign
,
5155 make_expr_symbol (exp
), 0, (char *) NULL
);
5159 /* Parse the .sleb128 and .uleb128 pseudos. */
5166 #ifdef md_flush_pending_output
5167 md_flush_pending_output ();
5173 emit_leb128_expr (&exp
, sign
);
5175 while (*input_line_pointer
++ == ',');
5177 input_line_pointer
--;
5178 demand_empty_rest_of_line ();
5182 stringer_append_char (int c
, int bitsize
)
5184 if (!target_big_endian
)
5185 FRAG_APPEND_1_CHAR (c
);
5190 FRAG_APPEND_1_CHAR (0);
5191 FRAG_APPEND_1_CHAR (0);
5192 FRAG_APPEND_1_CHAR (0);
5193 FRAG_APPEND_1_CHAR (0);
5196 FRAG_APPEND_1_CHAR (0);
5197 FRAG_APPEND_1_CHAR (0);
5200 FRAG_APPEND_1_CHAR (0);
5205 /* Called with invalid bitsize argument. */
5209 if (target_big_endian
)
5210 FRAG_APPEND_1_CHAR (c
);
5213 /* Worker to do .ascii etc statements.
5214 Reads 0 or more ',' separated, double-quoted strings.
5215 Caller should have checked need_pass_2 is FALSE because we don't
5217 Checks for end-of-line.
5218 BITS_APPENDZERO says how many bits are in a target char.
5219 The bottom bit is set if a NUL char should be appended to the strings. */
5222 stringer (int bits_appendzero
)
5224 const int bitsize
= bits_appendzero
& ~7;
5225 const int append_zero
= bits_appendzero
& 1;
5227 #if !defined(NO_LISTING) && defined (OBJ_ELF)
5231 #ifdef md_flush_pending_output
5232 md_flush_pending_output ();
5235 #ifdef md_cons_align
5239 /* The following awkward logic is to parse ZERO or more strings,
5240 comma separated. Recall a string expression includes spaces
5241 before the opening '\"' and spaces after the closing '\"'.
5242 We fake a leading ',' if there is (supposed to be)
5243 a 1st, expression. We keep demanding expressions for each ','. */
5244 if (is_it_end_of_statement ())
5246 c
= 0; /* Skip loop. */
5247 ++input_line_pointer
; /* Compensate for end of loop. */
5251 c
= ','; /* Do loop. */
5253 /* If we have been switched into the abs_section then we
5254 will not have an obstack onto which we can hang strings. */
5255 if (now_seg
== absolute_section
)
5257 as_bad (_("strings must be placed into a section"));
5259 ignore_rest_of_line ();
5262 while (c
== ',' || c
== '<' || c
== '"')
5265 switch (*input_line_pointer
)
5268 ++input_line_pointer
; /*->1st char of string. */
5269 #if !defined(NO_LISTING) && defined (OBJ_ELF)
5270 start
= input_line_pointer
;
5273 while (is_a_char (c
= next_char_of_string ()))
5274 stringer_append_char (c
, bitsize
);
5277 stringer_append_char (0, bitsize
);
5279 know (input_line_pointer
[-1] == '\"');
5281 #if !defined(NO_LISTING) && defined (OBJ_ELF)
5282 /* In ELF, when gcc is emitting DWARF 1 debugging output, it
5283 will emit .string with a filename in the .debug section
5284 after a sequence of constants. See the comment in
5285 emit_expr for the sequence. emit_expr will set
5286 dwarf_file_string to non-zero if this string might be a
5287 source file name. */
5288 if (strcmp (segment_name (now_seg
), ".debug") != 0)
5289 dwarf_file_string
= 0;
5290 else if (dwarf_file_string
)
5292 c
= input_line_pointer
[-1];
5293 input_line_pointer
[-1] = '\0';
5294 listing_source_file (start
);
5295 input_line_pointer
[-1] = c
;
5301 input_line_pointer
++;
5302 c
= get_single_number ();
5303 stringer_append_char (c
, bitsize
);
5304 if (*input_line_pointer
!= '>')
5305 as_bad (_("expected <nn>"));
5307 input_line_pointer
++;
5310 input_line_pointer
++;
5314 c
= *input_line_pointer
;
5317 demand_empty_rest_of_line ();
5320 /* FIXME-SOMEDAY: I had trouble here on characters with the
5321 high bits set. We'll probably also have trouble with
5322 multibyte chars, wide chars, etc. Also be careful about
5323 returning values bigger than 1 byte. xoxorich. */
5326 next_char_of_string (void)
5330 c
= *input_line_pointer
++ & CHAR_MASK
;
5338 as_warn (_("unterminated string; newline inserted"));
5339 bump_line_counters ();
5342 #ifndef NO_STRING_ESCAPES
5344 switch (c
= *input_line_pointer
++)
5372 break; /* As itself. */
5388 for (i
= 0, number
= 0;
5389 ISDIGIT (c
) && i
< 3;
5390 c
= *input_line_pointer
++, i
++)
5392 number
= number
* 8 + c
- '0';
5397 --input_line_pointer
;
5406 c
= *input_line_pointer
++;
5407 while (ISXDIGIT (c
))
5410 number
= number
* 16 + c
- '0';
5411 else if (ISUPPER (c
))
5412 number
= number
* 16 + c
- 'A' + 10;
5414 number
= number
* 16 + c
- 'a' + 10;
5415 c
= *input_line_pointer
++;
5418 --input_line_pointer
;
5423 /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
5424 as_warn (_("unterminated string; newline inserted"));
5426 bump_line_counters ();
5431 #ifdef ONLY_STANDARD_ESCAPES
5432 as_bad (_("bad escaped character in string"));
5434 #endif /* ONLY_STANDARD_ESCAPES */
5439 #endif /* ! defined (NO_STRING_ESCAPES) */
5448 get_segmented_expression (expressionS
*expP
)
5452 retval
= expression (expP
);
5453 if (expP
->X_op
== O_illegal
5454 || expP
->X_op
== O_absent
5455 || expP
->X_op
== O_big
)
5457 as_bad (_("expected address expression"));
5458 expP
->X_op
= O_constant
;
5459 expP
->X_add_number
= 0;
5460 retval
= absolute_section
;
5466 get_known_segmented_expression (expressionS
*expP
)
5468 segT retval
= get_segmented_expression (expP
);
5470 if (retval
== undefined_section
)
5472 /* There is no easy way to extract the undefined symbol from the
5474 if (expP
->X_add_symbol
!= NULL
5475 && S_GET_SEGMENT (expP
->X_add_symbol
) != expr_section
)
5476 as_warn (_("symbol \"%s\" undefined; zero assumed"),
5477 S_GET_NAME (expP
->X_add_symbol
));
5479 as_warn (_("some symbol undefined; zero assumed"));
5480 retval
= absolute_section
;
5481 expP
->X_op
= O_constant
;
5482 expP
->X_add_number
= 0;
5487 char /* Return terminator. */
5488 get_absolute_expression_and_terminator (long *val_pointer
/* Return value of expression. */)
5490 /* FIXME: val_pointer should probably be offsetT *. */
5491 *val_pointer
= (long) get_absolute_expression ();
5492 return (*input_line_pointer
++);
5495 /* Like demand_copy_string, but return NULL if the string contains any '\0's.
5496 Give a warning if that happens. */
5499 demand_copy_C_string (int *len_pointer
)
5503 if ((s
= demand_copy_string (len_pointer
)) != 0)
5507 for (len
= *len_pointer
; len
> 0; len
--)
5514 as_bad (_("this string may not contain \'\\0\'"));
5522 /* Demand string, but return a safe (=private) copy of the string.
5523 Return NULL if we can't read a string here. */
5526 demand_copy_string (int *lenP
)
5534 if (*input_line_pointer
== '\"')
5536 input_line_pointer
++; /* Skip opening quote. */
5538 while (is_a_char (c
= next_char_of_string ()))
5540 obstack_1grow (¬es
, c
);
5543 /* JF this next line is so demand_copy_C_string will return a
5544 null terminated string. */
5545 obstack_1grow (¬es
, '\0');
5546 retval
= (char *) obstack_finish (¬es
);
5550 as_bad (_("missing string"));
5552 ignore_rest_of_line ();
5558 /* In: Input_line_pointer->next character.
5560 Do: Skip input_line_pointer over all whitespace.
5562 Out: 1 if input_line_pointer->end-of-line. */
5565 is_it_end_of_statement (void)
5568 return (is_end_of_line
[(unsigned char) *input_line_pointer
]);
5572 equals (char *sym_name
, int reassign
)
5577 input_line_pointer
++;
5578 if (*input_line_pointer
== '=')
5579 input_line_pointer
++;
5580 if (reassign
< 0 && *input_line_pointer
== '=')
5581 input_line_pointer
++;
5583 while (*input_line_pointer
== ' ' || *input_line_pointer
== '\t')
5584 input_line_pointer
++;
5587 stop
= mri_comment_field (&stopc
);
5589 assign_symbol (sym_name
, reassign
>= 0 ? !reassign
: reassign
);
5593 demand_empty_rest_of_line ();
5594 mri_comment_end (stop
, stopc
);
5598 /* .incbin -- include a file verbatim at the current location. */
5601 s_incbin (int x ATTRIBUTE_UNUSED
)
5612 #ifdef md_flush_pending_output
5613 md_flush_pending_output ();
5616 #ifdef md_cons_align
5621 filename
= demand_copy_string (& len
);
5622 if (filename
== NULL
)
5627 /* Look for optional skip and count. */
5628 if (* input_line_pointer
== ',')
5630 ++ input_line_pointer
;
5631 skip
= get_absolute_expression ();
5635 if (* input_line_pointer
== ',')
5637 ++ input_line_pointer
;
5639 count
= get_absolute_expression ();
5641 as_warn (_(".incbin count zero, ignoring `%s'"), filename
);
5647 demand_empty_rest_of_line ();
5649 /* Try opening absolute path first, then try include dirs. */
5650 binfile
= fopen (filename
, FOPEN_RB
);
5651 if (binfile
== NULL
)
5655 path
= (char *) xmalloc ((unsigned long) len
+ include_dir_maxlen
+ 5);
5657 for (i
= 0; i
< include_dir_count
; i
++)
5659 sprintf (path
, "%s/%s", include_dirs
[i
], filename
);
5661 binfile
= fopen (path
, FOPEN_RB
);
5662 if (binfile
!= NULL
)
5666 if (binfile
== NULL
)
5667 as_bad (_("file not found: %s"), filename
);
5670 path
= xstrdup (filename
);
5676 register_dependency (path
);
5678 /* Compute the length of the file. */
5679 if (fseek (binfile
, 0, SEEK_END
) != 0)
5681 as_bad (_("seek to end of .incbin file failed `%s'"), path
);
5684 file_len
= ftell (binfile
);
5686 /* If a count was not specified use the remainder of the file. */
5688 count
= file_len
- skip
;
5690 if (skip
< 0 || count
< 0 || file_len
< 0 || skip
+ count
> file_len
)
5692 as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"),
5693 skip
, count
, file_len
);
5697 if (fseek (binfile
, skip
, SEEK_SET
) != 0)
5699 as_bad (_("could not skip to %ld in file `%s'"), skip
, path
);
5703 /* Allocate frag space and store file contents in it. */
5704 binfrag
= frag_more (count
);
5706 bytes
= fread (binfrag
, 1, count
, binfile
);
5708 as_warn (_("truncated file `%s', %ld of %ld bytes read"),
5709 path
, bytes
, count
);
5712 if (binfile
!= NULL
)
5718 /* .include -- include a file at this point. */
5721 s_include (int arg ATTRIBUTE_UNUSED
)
5730 filename
= demand_copy_string (&i
);
5731 if (filename
== NULL
)
5733 /* demand_copy_string has already printed an error and
5734 called ignore_rest_of_line. */
5742 while (!is_end_of_line
[(unsigned char) *input_line_pointer
]
5743 && *input_line_pointer
!= ' '
5744 && *input_line_pointer
!= '\t')
5746 obstack_1grow (¬es
, *input_line_pointer
);
5747 ++input_line_pointer
;
5751 obstack_1grow (¬es
, '\0');
5752 filename
= (char *) obstack_finish (¬es
);
5753 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
5754 ++input_line_pointer
;
5757 demand_empty_rest_of_line ();
5758 path
= (char *) xmalloc ((unsigned long) i
5759 + include_dir_maxlen
+ 5 /* slop */ );
5761 for (i
= 0; i
< include_dir_count
; i
++)
5763 strcpy (path
, include_dirs
[i
]);
5765 strcat (path
, filename
);
5766 if (0 != (try_file
= fopen (path
, FOPEN_RT
)))
5776 /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
5777 register_dependency (path
);
5778 input_scrub_insert_file (path
);
5782 add_include_dir (char *path
)
5786 if (include_dir_count
== 0)
5788 include_dirs
= (char **) xmalloc (2 * sizeof (*include_dirs
));
5789 include_dirs
[0] = "."; /* Current dir. */
5790 include_dir_count
= 2;
5794 include_dir_count
++;
5796 (char **) realloc (include_dirs
,
5797 include_dir_count
* sizeof (*include_dirs
));
5800 include_dirs
[include_dir_count
- 1] = path
; /* New one. */
5803 if (i
> include_dir_maxlen
)
5804 include_dir_maxlen
= i
;
5807 /* Output debugging information to denote the source file. */
5810 generate_file_debug (void)
5812 if (debug_type
== DEBUG_STABS
)
5813 stabs_generate_asm_file ();
5816 /* Output line number debugging information for the current source line. */
5819 generate_lineno_debug (void)
5823 case DEBUG_UNSPECIFIED
:
5828 stabs_generate_asm_lineno ();
5831 ecoff_generate_asm_lineno ();
5834 /* ??? We could here indicate to dwarf2dbg.c that something
5835 has changed. However, since there is additional backend
5836 support that is required (calling dwarf2_emit_insn), we
5837 let dwarf2dbg.c call as_where on its own. */
5842 /* Output debugging information to mark a function entry point or end point.
5843 END_P is zero for .func, and non-zero for .endfunc. */
5848 do_s_func (end_p
, NULL
);
5851 /* Subroutine of s_func so targets can choose a different default prefix.
5852 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
5855 do_s_func (int end_p
, const char *default_prefix
)
5857 /* Record the current function so that we can issue an error message for
5858 misplaced .func,.endfunc, and also so that .endfunc needs no
5860 static char *current_name
;
5861 static char *current_label
;
5865 if (current_name
== NULL
)
5867 as_bad (_("missing .func"));
5868 ignore_rest_of_line ();
5872 if (debug_type
== DEBUG_STABS
)
5873 stabs_generate_asm_endfunc (current_name
, current_label
);
5875 current_name
= current_label
= NULL
;
5880 char delim1
, delim2
;
5882 if (current_name
!= NULL
)
5884 as_bad (_(".endfunc missing for previous .func"));
5885 ignore_rest_of_line ();
5889 name
= input_line_pointer
;
5890 delim1
= get_symbol_end ();
5891 name
= xstrdup (name
);
5892 *input_line_pointer
= delim1
;
5894 if (*input_line_pointer
!= ',')
5898 if (asprintf (&label
, "%s%s", default_prefix
, name
) == -1)
5899 as_fatal ("%s", xstrerror (errno
));
5903 char leading_char
= bfd_get_symbol_leading_char (stdoutput
);
5904 /* Missing entry point, use function's name with the leading
5908 if (asprintf (&label
, "%c%s", leading_char
, name
) == -1)
5909 as_fatal ("%s", xstrerror (errno
));
5917 ++input_line_pointer
;
5919 label
= input_line_pointer
;
5920 delim2
= get_symbol_end ();
5921 label
= xstrdup (label
);
5922 *input_line_pointer
= delim2
;
5925 if (debug_type
== DEBUG_STABS
)
5926 stabs_generate_asm_func (name
, label
);
5928 current_name
= name
;
5929 current_label
= label
;
5932 demand_empty_rest_of_line ();
5935 #ifdef HANDLE_BUNDLE
5938 s_bundle_align_mode (int arg ATTRIBUTE_UNUSED
)
5940 unsigned int align
= get_absolute_expression ();
5942 demand_empty_rest_of_line ();
5944 if (align
> (unsigned int) TC_ALIGN_LIMIT
)
5945 as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"),
5946 (unsigned int) TC_ALIGN_LIMIT
);
5948 if (bundle_lock_frag
!= NULL
)
5950 as_bad (_("cannot change .bundle_align_mode inside .bundle_lock"));
5954 bundle_align_p2
= align
;
5958 s_bundle_lock (int arg ATTRIBUTE_UNUSED
)
5960 demand_empty_rest_of_line ();
5962 if (bundle_align_p2
== 0)
5964 as_bad (_(".bundle_lock is meaningless without .bundle_align_mode"));
5968 if (bundle_lock_depth
== 0)
5970 bundle_lock_frchain
= frchain_now
;
5971 bundle_lock_frag
= start_bundle ();
5973 ++bundle_lock_depth
;
5977 s_bundle_unlock (int arg ATTRIBUTE_UNUSED
)
5981 demand_empty_rest_of_line ();
5983 if (bundle_lock_frag
== NULL
)
5985 as_bad (_(".bundle_unlock without preceding .bundle_lock"));
5989 gas_assert (bundle_align_p2
> 0);
5991 gas_assert (bundle_lock_depth
> 0);
5992 if (--bundle_lock_depth
> 0)
5995 size
= pending_bundle_size (bundle_lock_frag
);
5997 if (size
> (1U << bundle_align_p2
))
5998 as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"),
5999 size
, 1 << bundle_align_p2
);
6001 finish_bundle (bundle_lock_frag
, size
);
6003 bundle_lock_frag
= NULL
;
6004 bundle_lock_frchain
= NULL
;
6007 #endif /* HANDLE_BUNDLE */
6010 s_ignore (int arg ATTRIBUTE_UNUSED
)
6012 ignore_rest_of_line ();
6016 read_print_statistics (FILE *file
)
6018 hash_print_statistics (file
, "pseudo-op table", po_hash
);
6021 /* Inserts the given line into the input stream.
6023 This call avoids macro/conditionals nesting checking, since the contents of
6024 the line are assumed to replace the contents of a line already scanned.
6026 An appropriate use of this function would be substitution of input lines when
6027 called by md_start_line_hook(). The given line is assumed to already be
6028 properly scrubbed. */
6031 input_scrub_insert_line (const char *line
)
6034 size_t len
= strlen (line
);
6035 sb_build (&newline
, len
);
6036 sb_add_buffer (&newline
, line
, len
);
6037 input_scrub_include_sb (&newline
, input_line_pointer
, 0);
6039 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
6042 /* Insert a file into the input stream; the path must resolve to an actual
6043 file; no include path searching or dependency registering is performed. */
6046 input_scrub_insert_file (char *path
)
6048 input_scrub_include_file (path
, input_line_pointer
);
6049 buffer_limit
= input_scrub_next_buffer (&input_line_pointer
);
6052 /* Find the end of a line, considering quotation and escaping of quotes. */
6054 #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS)
6055 # define TC_SINGLE_QUOTE_STRINGS 1
6059 _find_end_of_line (char *s
, int mri_string
, int insn ATTRIBUTE_UNUSED
,
6062 char inquote
= '\0';
6065 while (!is_end_of_line
[(unsigned char) *s
]
6066 || (inquote
&& !ISCNTRL (*s
))
6067 || (inquote
== '\'' && flag_mri
)
6068 #ifdef TC_EOL_IN_INSN
6069 || (insn
&& TC_EOL_IN_INSN (s
))
6071 /* PR 6926: When we are parsing the body of a macro the sequence
6072 \@ is special - it refers to the invocation count. If the @
6073 character happens to be registered as a line-separator character
6074 by the target, then the is_end_of_line[] test above will have
6075 returned true, but we need to ignore the line separating
6076 semantics in this particular case. */
6077 || (in_macro
&& inescape
&& *s
== '@')
6080 if (mri_string
&& *s
== '\'')
6084 else if (*s
== '\\')
6088 #ifdef TC_SINGLE_QUOTE_STRINGS
6089 || (TC_SINGLE_QUOTE_STRINGS
&& *s
== '\'')
6096 as_warn (_("missing closing `%c'"), inquote
);
6098 as_warn (_("stray `\\'"));
6103 find_end_of_line (char *s
, int mri_string
)
6105 return _find_end_of_line (s
, mri_string
, 0, 0);