1 /* read.c - read a source file -
2 Copyright (C) 1986-2016 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF).
22 But then, GNU isn't spozed to run on your machine anyway.
23 (RMS is so shortsighted sometimes.) */
24 #define MASK_CHAR ((int)(unsigned char) -1)
26 /* This is the largest known floating point format (for now). It will
27 grow when we do 4361 style flonums. */
28 #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
30 /* Routines that read assembler source text to build spaghetti in memory.
31 Another group of these functions is in the expr.c module. */
34 #include "safe-ctype.h"
40 #include "dw2gencfi.h"
43 #ifndef TC_START_LABEL
44 #define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) (NEXT_CHAR == ':')
47 /* Set by the object-format or the target. */
48 #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
49 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
54 else if ((SIZE) >= 4) \
56 else if ((SIZE) >= 2) \
64 char *input_line_pointer; /*->next char of source file to parse. */
66 #if BITS_PER_CHAR != 8
67 /* The following table is indexed by[(char)] and will break if
68 a char does not have exactly 256 states (hopefully 0:255!)! */
77 /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */
82 /* The Delta 68k assembler permits % inside label names. */
87 /* The PowerPC Windows NT assemblers permits ? inside label names. */
92 /* The IA-64 assembler uses # as a suffix designating a symbol. We include
93 it in the symbol and strip it out in tc_canonicalize_symbol_name. */
102 /* The Delta 68k assembler permits ~ at start of label names. */
106 /* Used by is_... macros. our ctype[]. */
107 char lex_type[256] = {
108 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
109 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
110 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
111 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */
112 LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
113 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */
114 0, 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, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */
116 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
117 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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
127 Out: 1 if this character ends a line.
128 2 if this character is a line separator. */
129 char is_end_of_line[256] = {
131 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
133 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */
135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
136 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */
137 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
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, /* */
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 /* */
152 #ifndef TC_CASE_SENSITIVE
153 char original_case_string[128];
156 /* Functions private to this file. */
158 static char *buffer; /* 1st char of each buffer of lines is here. */
159 static char *buffer_limit; /*->1 + last char in buffer. */
161 /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1
162 in the tc-<CPU>.h file. See the "Porting GAS" section of the
164 int target_big_endian = TARGET_BYTES_BIG_ENDIAN;
166 /* Variables for handling include file directory table. */
168 /* Table of pointers to directories to search for .include's. */
171 /* How many are in the table. */
172 int include_dir_count;
174 /* Length of longest in table. */
175 int include_dir_maxlen = 1;
177 #ifndef WORKING_DOT_WORD
178 struct broken_word *broken_words;
179 int new_broken_words;
182 /* The current offset into the absolute section. We don't try to
183 build frags in the absolute section, since no data can be stored
184 there. We just keep track of the current offset. */
185 addressT abs_section_offset;
187 /* If this line had an MRI style label, it is stored in this variable.
188 This is used by some of the MRI pseudo-ops. */
191 /* This global variable is used to support MRI common sections. We
192 translate such sections into a common symbol. This variable is
193 non-NULL when we are in an MRI common section. */
194 symbolS *mri_common_symbol;
196 /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we
197 need to align to an even byte boundary unless the next pseudo-op is
198 dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment
200 static int mri_pending_align;
204 /* This variable is set to be non-zero if the next string we see might
205 be the name of the source file in DWARF debugging information. See
206 the comment in emit_expr for the format we look for. */
207 static int dwarf_file_string;
211 /* If the target defines the md_frag_max_var hook then we know
212 enough to implement the .bundle_align_mode features. */
213 #ifdef md_frag_max_var
214 # define HANDLE_BUNDLE
218 /* .bundle_align_mode sets this. Normally it's zero. When nonzero,
219 it's the exponent of the bundle size, and aligned instruction bundle
220 mode is in effect. */
221 static unsigned int bundle_align_p2;
223 /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets
224 bundle_lock_frag to frag_now and then starts a new frag with
225 frag_align_code. At the same time, bundle_lock_frain gets frchain_now,
226 so that .bundle_unlock can verify that we didn't change segments.
227 .bundle_unlock resets both to NULL. If we detect a bundling violation,
228 then we reset bundle_lock_frchain to NULL as an indicator that we've
229 already diagnosed the error with as_bad and don't need a cascade of
230 redundant errors, but bundle_lock_frag remains set to indicate that
231 we are expecting to see .bundle_unlock. */
232 static fragS *bundle_lock_frag;
233 static frchainS *bundle_lock_frchain;
235 /* This is incremented by .bundle_lock and decremented by .bundle_unlock,
237 static unsigned int bundle_lock_depth;
240 static void do_s_func (int end_p, const char *default_prefix);
241 static void s_align (int, int);
242 static void s_altmacro (int);
243 static void s_bad_end (int);
244 static void s_reloc (int);
245 static int hex_float (int, char *);
246 static segT get_known_segmented_expression (expressionS * expP);
247 static void pobegin (void);
248 static size_t get_non_macro_line_sb (sb *);
249 static void generate_file_debug (void);
250 static char *_find_end_of_line (char *, int, int, int);
258 obj_read_begin_hook ();
260 /* Something close -- but not too close -- to a multiple of 1024.
261 The debugging malloc I'm using has 24 bytes of overhead. */
262 obstack_begin (¬es, chunksize);
263 obstack_begin (&cond_obstack, chunksize);
265 #ifndef tc_line_separator_chars
266 #define tc_line_separator_chars line_separator_chars
268 /* Use machine dependent syntax. */
269 for (p = tc_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);
490 if (exp->X_op != O_constant)
492 if (exp->X_op != O_absent)
493 as_bad (_("bad or irreducible absolute expression"));
494 exp->X_add_number = 0;
496 return exp->X_add_number;
500 get_absolute_expression (void)
504 return get_absolute_expr (&exp);
507 static int pop_override_ok = 0;
508 static const char *pop_table_name;
511 pop_insert (const pseudo_typeS *table)
514 const pseudo_typeS *pop;
515 for (pop = table; pop->poc_name; pop++)
517 errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
518 if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists")))
519 as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name,
524 #ifndef md_pop_insert
525 #define md_pop_insert() pop_insert(md_pseudo_table)
528 #ifndef obj_pop_insert
529 #define obj_pop_insert() pop_insert(obj_pseudo_table)
532 #ifndef cfi_pop_insert
533 #define cfi_pop_insert() pop_insert(cfi_pseudo_table)
539 po_hash = hash_new ();
541 /* Do the target-specific pseudo ops. */
542 pop_table_name = "md";
545 /* Now object specific. Skip any that were in the target table. */
546 pop_table_name = "obj";
550 /* Now portable ones. Skip any that we've seen already. */
551 pop_table_name = "standard";
552 pop_insert (potable);
555 pop_table_name = "cfi";
560 #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \
561 if (ignore_input ()) \
563 char *eol = find_end_of_line (input_line_pointer - (num_read), \
565 input_line_pointer = (input_line_pointer <= buffer_limit \
566 && eol >= buffer_limit) \
572 /* This function is used when scrubbing the characters between #APP
575 static char *scrub_string;
576 static char *scrub_string_end;
579 scrub_from_string (char *buf, size_t buflen)
583 copy = scrub_string_end - scrub_string;
586 memcpy (buf, scrub_string, copy);
587 scrub_string += copy;
591 /* Helper function of read_a_source_file, which tries to expand a macro. */
593 try_macro (char term, const char *line)
599 if (check_macro (line, &out, &err, ¯o))
603 *input_line_pointer++ = term;
604 input_scrub_include_sb (&out,
605 input_line_pointer, 1);
608 input_scrub_next_buffer (&input_line_pointer);
610 md_macro_info (macro);
618 /* Start a new instruction bundle. Returns the rs_align_code frag that
619 will be used to align the new bundle. */
623 fragS *frag = frag_now;
625 frag_align_code (0, 0);
627 while (frag->fr_type != rs_align_code)
628 frag = frag->fr_next;
630 gas_assert (frag != frag_now);
635 /* Calculate the maximum size after relaxation of the region starting
636 at the given frag and extending through frag_now (which is unfinished). */
638 pending_bundle_size (fragS *frag)
640 unsigned int offset = frag->fr_fix;
641 unsigned int size = 0;
643 gas_assert (frag != frag_now);
644 gas_assert (frag->fr_type == rs_align_code);
646 while (frag != frag_now)
648 /* This should only happen in what will later become an error case. */
652 size += frag->fr_fix;
653 if (frag->fr_type == rs_machine_dependent)
654 size += md_frag_max_var (frag);
656 frag = frag->fr_next;
659 gas_assert (frag == frag_now);
660 size += frag_now_fix ();
661 if (frag->fr_type == rs_machine_dependent)
662 size += md_frag_max_var (frag);
664 gas_assert (size >= offset);
666 return size - offset;
669 /* Finish off the frag created to ensure bundle alignment. */
671 finish_bundle (fragS *frag, unsigned int size)
673 gas_assert (bundle_align_p2 > 0);
674 gas_assert (frag->fr_type == rs_align_code);
678 /* If there is more than a single byte, then we need to set up the
679 alignment frag. Otherwise we leave it at its initial state from
680 calling frag_align_code (0, 0), so that it does nothing. */
681 frag->fr_offset = bundle_align_p2;
682 frag->fr_subtype = size - 1;
685 /* We do this every time rather than just in s_bundle_align_mode
686 so that we catch any affected section without needing hooks all
687 over for all paths that do section changes. It's cheap enough. */
688 if (bundle_align_p2 > OCTETS_PER_BYTE_POWER)
689 record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER);
692 /* Assemble one instruction. This takes care of the bundle features
693 around calling md_assemble. */
695 assemble_one (char *line)
697 fragS *insn_start_frag = NULL;
699 if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now)
701 as_bad (_("cannot change section or subsection inside .bundle_lock"));
702 /* Clearing this serves as a marker that we have already complained. */
703 bundle_lock_frchain = NULL;
706 if (bundle_lock_frchain == NULL && bundle_align_p2 > 0)
707 insn_start_frag = start_bundle ();
711 if (bundle_lock_frchain != NULL)
713 /* Make sure this hasn't pushed the locked sequence
714 past the bundle size. */
715 unsigned int bundle_size = pending_bundle_size (bundle_lock_frag);
716 if (bundle_size > (1U << bundle_align_p2))
718 .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"),
719 bundle_size, 1U << bundle_align_p2);
721 else if (bundle_align_p2 > 0)
723 unsigned int insn_size = pending_bundle_size (insn_start_frag);
725 if (insn_size > (1U << bundle_align_p2))
727 single instruction is %u bytes long but .bundle_align_mode limit is %u"),
728 (unsigned int) insn_size, 1U << bundle_align_p2);
730 finish_bundle (insn_start_frag, insn_size);
734 #else /* !HANDLE_BUNDLE */
736 # define assemble_one(line) md_assemble(line)
738 #endif /* HANDLE_BUNDLE */
743 flagword flags = bfd_get_section_flags (stdoutput, now_seg);
745 return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS));
748 /* Guts of .align directive:
749 N is the power of two to which to align. A value of zero is accepted but
750 ignored: the default alignment of the section will be at least this.
751 FILL may be NULL, or it may point to the bytes of the fill pattern.
752 LEN is the length of whatever FILL points to, if anything. If LEN is zero
753 but FILL is not NULL then LEN is treated as if it were one.
754 MAX is the maximum number of characters to skip when doing the alignment,
755 or 0 if there is no maximum. */
758 do_align (unsigned int n, char *fill, unsigned int len, unsigned int max)
760 if (now_seg == absolute_section || in_bss ())
766 if (now_seg == absolute_section)
767 as_warn (_("ignoring fill value in absolute section"));
769 as_warn (_("ignoring fill value in section `%s'"),
770 segment_name (now_seg));
777 #ifdef md_flush_pending_output
778 md_flush_pending_output ();
782 md_do_align (n, fill, len, max, just_record_alignment);
785 /* Only make a frag if we HAVE to... */
786 if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2)
790 if (subseg_text_p (now_seg))
791 frag_align_code (n, max);
793 frag_align (n, 0, max);
796 frag_align (n, *fill, max);
798 frag_align_pattern (n, fill, len, max);
802 just_record_alignment: ATTRIBUTE_UNUSED_LABEL
805 if (n > OCTETS_PER_BYTE_POWER)
806 record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER);
809 /* We read the file, putting things into a web that represents what we
810 have been reading. */
812 read_a_source_file (char *name)
816 char *s; /* String of symbol, '\0' appended. */
824 buffer = input_scrub_new_file (name);
827 listing_newline (NULL);
828 register_dependency (name);
830 /* Generate debugging information before we've read anything in to denote
831 this file as the "main" source file and not a subordinate one
832 (e.g. N_SO vs N_SOL in stabs). */
833 generate_file_debug ();
835 while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)
836 { /* We have another line to parse. */
838 /* In order to avoid listing macro expansion lines with labels
839 multiple times, keep track of which line was last issued. */
840 static char *last_eol;
844 while (input_line_pointer < buffer_limit)
846 bfd_boolean was_new_line;
847 /* We have more of this buffer to parse. */
849 /* We now have input_line_pointer->1st char of next line.
850 If input_line_pointer [-1] == '\n' then we just
851 scanned another line: so bump line counters. */
852 was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]];
855 symbol_set_value_now (&dot_symbol);
856 #ifdef md_start_line_hook
857 md_start_line_hook ();
859 if (input_line_pointer[-1] == '\n')
860 bump_line_counters ();
864 /* If listing is on, and we are expanding a macro, then give
865 the listing code the contents of the expanded line. */
868 if ((listing & LISTING_MACEXP) && macro_nest > 0)
870 /* Find the end of the current expanded macro line. */
871 s = find_end_of_line (input_line_pointer, flag_m68k_mri);
879 /* Copy it for safe keeping. Also give an indication of
880 how much macro nesting is involved at this point. */
881 len = s - input_line_pointer;
882 copy = (char *) xmalloc (len + macro_nest + 2);
883 memset (copy, '>', macro_nest);
884 copy[macro_nest] = ' ';
885 memcpy (copy + macro_nest + 1, input_line_pointer, len);
886 copy[macro_nest + 1 + len] = '\0';
888 /* Install the line with the listing facility. */
889 listing_newline (copy);
893 listing_newline (NULL);
900 if (LABELS_WITHOUT_COLONS || flag_m68k_mri)
902 next_char = * input_line_pointer;
903 /* Text at the start of a line must be a label, we
904 run down and stick a colon in. */
905 if (is_name_beginner (next_char) || next_char == '"')
910 HANDLE_CONDITIONAL_ASSEMBLY (0);
912 nul_char = get_symbol_name (& line_start);
913 next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char);
915 /* In MRI mode, the EQU and MACRO pseudoops must
916 be handled specially. */
920 char *rest = input_line_pointer + 1;
924 if (*rest == ' ' || *rest == '\t')
926 if ((strncasecmp (rest, "EQU", 3) == 0
927 || strncasecmp (rest, "SET", 3) == 0)
928 && (rest[3] == ' ' || rest[3] == '\t'))
930 input_line_pointer = rest + 3;
932 strncasecmp (rest, "SET", 3) == 0);
935 if (strncasecmp (rest, "MACRO", 5) == 0
938 || is_end_of_line[(unsigned char) rest[5]]))
942 /* In MRI mode, we need to handle the MACRO
943 pseudo-op specially: we don't want to put the
944 symbol in the symbol table. */
946 #ifdef TC_START_LABEL_WITHOUT_COLON
947 && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char)
950 line_label = colon (line_start);
952 line_label = symbol_create (line_start,
957 next_char = restore_line_pointer (nul_char);
958 if (next_char == ':')
959 input_line_pointer++;
964 /* We are at the beginning of a line, or similar place.
965 We expect a well-formed assembler statement.
966 A "symbol-name:" is a statement.
968 Depending on what compiler is used, the order of these tests
969 may vary to catch most common case 1st.
970 Each test is independent of all other tests at the (top)
973 nul_char = next_char = *input_line_pointer++;
974 while (next_char == '\t' || next_char == ' ' || next_char == '\f');
976 /* C is the 1st significant character.
977 Input_line_pointer points after that character. */
978 if (is_name_beginner (next_char) || next_char == '"')
982 /* Want user-defined label or pseudo/opcode. */
983 HANDLE_CONDITIONAL_ASSEMBLY (1);
985 --input_line_pointer;
986 nul_char = get_symbol_name (& s); /* name's delimiter. */
987 next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char);
988 rest = input_line_pointer + (nul_char == '"' ? 2 : 1);
990 /* NEXT_CHAR is character after symbol.
991 The end of symbol in the input line is now '\0'.
992 S points to the beginning of the symbol.
993 [In case of pseudo-op, s->'.'.]
994 Input_line_pointer->'\0' where NUL_CHAR was. */
995 if (TC_START_LABEL (s, nul_char, next_char))
999 /* In MRI mode, \tsym: set 0 is permitted. */
1003 if (*rest == ' ' || *rest == '\t')
1006 if ((strncasecmp (rest, "EQU", 3) == 0
1007 || strncasecmp (rest, "SET", 3) == 0)
1008 && (rest[3] == ' ' || rest[3] == '\t'))
1010 input_line_pointer = rest + 3;
1016 line_label = colon (s); /* User-defined label. */
1017 restore_line_pointer (nul_char);
1018 ++ input_line_pointer;
1019 #ifdef tc_check_label
1020 tc_check_label (line_label);
1022 /* Input_line_pointer->after ':'. */
1025 else if ((next_char == '=' && *rest == '=')
1026 || ((next_char == ' ' || next_char == '\t')
1031 demand_empty_rest_of_line ();
1033 else if ((next_char == '='
1034 || ((next_char == ' ' || next_char == '\t')
1036 #ifdef TC_EQUAL_IN_INSN
1037 && !TC_EQUAL_IN_INSN (next_char, s)
1042 demand_empty_rest_of_line ();
1046 /* Expect pseudo-op or machine instruction. */
1049 #ifndef TC_CASE_SENSITIVE
1053 strncpy (original_case_string, s2, sizeof (original_case_string));
1054 original_case_string[sizeof (original_case_string) - 1] = 0;
1058 *s2 = TOLOWER (*s2);
1063 if (NO_PSEUDO_DOT || flag_m68k_mri)
1065 /* The MRI assembler uses pseudo-ops without
1067 pop = (pseudo_typeS *) hash_find (po_hash, s);
1068 if (pop != NULL && pop->poc_handler == NULL)
1073 || (!flag_m68k_mri && *s == '.'))
1077 WARNING: next_char may be end-of-line.
1078 We lookup the pseudo-op table with s+1 because we
1079 already know that the pseudo-op begins with a '.'. */
1082 pop = (pseudo_typeS *) hash_find (po_hash, s + 1);
1083 if (pop && !pop->poc_handler)
1086 /* In MRI mode, we may need to insert an
1087 automatic alignment directive. What a hack
1089 if (mri_pending_align
1091 || !((pop->poc_handler == cons
1092 && pop->poc_val == 1)
1093 || (pop->poc_handler == s_space
1094 && pop->poc_val == 1)
1095 #ifdef tc_conditional_pseudoop
1096 || tc_conditional_pseudoop (pop)
1098 || pop->poc_handler == s_if
1099 || pop->poc_handler == s_ifdef
1100 || pop->poc_handler == s_ifc
1101 || pop->poc_handler == s_ifeqs
1102 || pop->poc_handler == s_else
1103 || pop->poc_handler == s_endif
1104 || pop->poc_handler == s_globl
1105 || pop->poc_handler == s_ignore)))
1107 do_align (1, (char *) NULL, 0, 0);
1108 mri_pending_align = 0;
1110 if (line_label != NULL)
1112 symbol_set_frag (line_label, frag_now);
1113 S_SET_VALUE (line_label, frag_now_fix ());
1117 /* Print the error msg now, while we still can. */
1120 char *end = input_line_pointer;
1122 (void) restore_line_pointer (nul_char);
1124 nul_char = next_char = *--input_line_pointer;
1125 *input_line_pointer = '\0';
1126 if (! macro_defined || ! try_macro (next_char, s))
1129 as_bad (_("unknown pseudo-op: `%s'"), s);
1130 *input_line_pointer++ = nul_char;
1135 /* Put it back for error messages etc. */
1136 next_char = restore_line_pointer (nul_char);
1137 /* The following skip of whitespace is compulsory.
1138 A well shaped space is sometimes all that separates
1139 keyword from operands. */
1140 if (next_char == ' ' || next_char == '\t')
1141 input_line_pointer++;
1143 /* Input_line is restored.
1144 Input_line_pointer->1st non-blank char
1145 after pseudo-operation. */
1146 (*pop->poc_handler) (pop->poc_val);
1148 /* If that was .end, just get out now. */
1149 if (pop->poc_handler == s_end)
1154 /* WARNING: next_char may be end-of-line. */
1155 /* Also: input_line_pointer->`\0` where nul_char was. */
1156 (void) restore_line_pointer (nul_char);
1157 input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0);
1158 next_char = nul_char = *input_line_pointer;
1159 *input_line_pointer = '\0';
1161 generate_lineno_debug ();
1163 if (macro_defined && try_macro (next_char, s))
1166 if (mri_pending_align)
1168 do_align (1, (char *) NULL, 0, 0);
1169 mri_pending_align = 0;
1170 if (line_label != NULL)
1172 symbol_set_frag (line_label, frag_now);
1173 S_SET_VALUE (line_label, frag_now_fix ());
1177 assemble_one (s); /* Assemble 1 instruction. */
1179 *input_line_pointer++ = nul_char;
1181 /* We resume loop AFTER the end-of-line from
1182 this instruction. */
1188 /* Empty statement? */
1189 if (is_end_of_line[(unsigned char) next_char])
1192 if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char))
1194 /* local label ("4:") */
1195 char *backup = input_line_pointer;
1197 HANDLE_CONDITIONAL_ASSEMBLY (1);
1199 temp = next_char - '0';
1201 if (nul_char == '"')
1202 ++ input_line_pointer;
1204 /* Read the whole number. */
1205 while (ISDIGIT (*input_line_pointer))
1207 temp = (temp * 10) + *input_line_pointer - '0';
1208 ++input_line_pointer;
1211 if (LOCAL_LABELS_DOLLAR
1212 && *input_line_pointer == '$'
1213 && *(input_line_pointer + 1) == ':')
1215 input_line_pointer += 2;
1217 if (dollar_label_defined (temp))
1219 as_fatal (_("label \"%d$\" redefined"), temp);
1222 define_dollar_label (temp);
1223 colon (dollar_label_name (temp, 0));
1228 && *input_line_pointer++ == ':')
1230 fb_label_instance_inc (temp);
1231 colon (fb_label_name (temp, 0));
1235 input_line_pointer = backup;
1238 if (next_char && strchr (line_comment_chars, next_char))
1239 { /* Its a comment. Better say APP or NO_APP. */
1244 unsigned int new_length;
1247 s = input_line_pointer;
1248 if (strncmp (s, "APP\n", 4))
1251 ignore_rest_of_line ();
1254 bump_line_counters ();
1257 ends = strstr (s, "#NO_APP\n");
1261 unsigned int tmp_len;
1264 /* The end of the #APP wasn't in this buffer. We
1265 keep reading in buffers until we find the #NO_APP
1266 that goes with this #APP There is one. The specs
1268 tmp_len = buffer_limit - s;
1269 tmp_buf = (char *) xmalloc (tmp_len + 1);
1270 memcpy (tmp_buf, s, tmp_len);
1273 new_tmp = input_scrub_next_buffer (&buffer);
1277 buffer_limit = new_tmp;
1278 input_line_pointer = buffer;
1279 ends = strstr (buffer, "#NO_APP\n");
1281 num = ends - buffer;
1283 num = buffer_limit - buffer;
1285 tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num);
1286 memcpy (tmp_buf + tmp_len, buffer, num);
1291 input_line_pointer = ends ? ends + 8 : NULL;
1299 input_line_pointer = ends + 8;
1303 scrub_string_end = ends;
1305 new_length = ends - s;
1306 new_buf = (char *) xmalloc (new_length);
1313 space = (new_buf + new_length) - new_tmp;
1314 size = do_scrub_chars (scrub_from_string, new_tmp, space);
1322 new_buf = (char *) xrealloc (new_buf, new_length + 100);
1323 new_tmp = new_buf + new_length;
1330 /* We've "scrubbed" input to the preferred format. In the
1331 process we may have consumed the whole of the remaining
1332 file (and included files). We handle this formatted
1333 input similar to that of macro expansion, letting
1334 actual macro expansion (possibly nested) and other
1335 input expansion work. Beware that in messages, line
1336 numbers and possibly file names will be incorrect. */
1337 new_length = strlen (new_buf);
1338 sb_build (&sbuf, new_length);
1339 sb_add_buffer (&sbuf, new_buf, new_length);
1340 input_scrub_include_sb (&sbuf, input_line_pointer, 0);
1342 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
1347 HANDLE_CONDITIONAL_ASSEMBLY (1);
1349 #ifdef tc_unrecognized_line
1350 if (tc_unrecognized_line (next_char))
1353 input_line_pointer--;
1354 /* Report unknown char as error. */
1355 demand_empty_rest_of_line ();
1360 symbol_set_value_now (&dot_symbol);
1362 #ifdef HANDLE_BUNDLE
1363 if (bundle_lock_frag != NULL)
1365 as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line,
1366 _(".bundle_lock with no matching .bundle_unlock"));
1367 bundle_lock_frag = NULL;
1368 bundle_lock_frchain = NULL;
1369 bundle_lock_depth = 0;
1376 /* Close the input file. */
1377 input_scrub_close ();
1378 #ifdef WARN_COMMENTS
1380 if (warn_comment && found_comment)
1381 as_warn_where (found_comment_file, found_comment,
1382 "first comment found here");
1387 /* Convert O_constant expression EXP into the equivalent O_big representation.
1388 Take the sign of the number from SIGN rather than X_add_number. */
1391 convert_to_bignum (expressionS *exp, int sign)
1396 value = exp->X_add_number;
1397 for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++)
1399 generic_bignum[i] = value & LITTLENUM_MASK;
1400 value >>= LITTLENUM_NUMBER_OF_BITS;
1402 /* Add a sequence of sign bits if the top bit of X_add_number is not
1403 the sign of the original value. */
1404 if ((exp->X_add_number < 0) == !sign)
1405 generic_bignum[i++] = sign ? LITTLENUM_MASK : 0;
1407 exp->X_add_number = i;
1410 /* For most MRI pseudo-ops, the line actually ends at the first
1411 nonquoted space. This function looks for that point, stuffs a null
1412 in, and sets *STOPCP to the character that used to be there, and
1413 returns the location.
1415 Until I hear otherwise, I am going to assume that this is only true
1416 for the m68k MRI assembler. */
1419 mri_comment_field (char *stopcp)
1425 know (flag_m68k_mri);
1427 for (s = input_line_pointer;
1428 ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t')
1436 for (s = input_line_pointer;
1437 !is_end_of_line[(unsigned char) *s];
1447 /* Skip to the end of an MRI comment field. */
1450 mri_comment_end (char *stop, int stopc)
1454 input_line_pointer = stop;
1456 while (!is_end_of_line[(unsigned char) *input_line_pointer])
1457 ++input_line_pointer;
1461 s_abort (int ignore ATTRIBUTE_UNUSED)
1463 as_fatal (_(".abort detected. Abandoning ship."));
1466 /* Handle the .align pseudo-op. A positive ARG is a default alignment
1467 (in bytes). A negative ARG is the negative of the length of the
1468 fill pattern. BYTES_P is non-zero if the alignment value should be
1469 interpreted as the byte boundary, rather than the power of 2. */
1470 #ifndef TC_ALIGN_LIMIT
1471 #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1)
1475 s_align (signed int arg, int bytes_p)
1477 unsigned int align_limit = TC_ALIGN_LIMIT;
1486 stop = mri_comment_field (&stopc);
1488 if (is_end_of_line[(unsigned char) *input_line_pointer])
1493 align = arg; /* Default value from pseudo-op table. */
1497 align = get_absolute_expression ();
1500 #ifdef TC_ALIGN_ZERO_IS_DEFAULT
1501 if (arg > 0 && align == 0)
1508 /* Convert to a power of 2. */
1513 for (i = 0; (align & 1) == 0; align >>= 1, ++i)
1516 as_bad (_("alignment not a power of 2"));
1522 if (align > align_limit)
1524 align = align_limit;
1525 as_warn (_("alignment too large: %u assumed"), align);
1528 if (*input_line_pointer != ',')
1535 ++input_line_pointer;
1536 if (*input_line_pointer == ',')
1540 fill = get_absolute_expression ();
1545 if (*input_line_pointer != ',')
1549 ++input_line_pointer;
1550 max = get_absolute_expression ();
1557 as_warn (_("expected fill pattern missing"));
1558 do_align (align, (char *) NULL, 0, max);
1562 unsigned int fill_len;
1574 do_align (align, &fill_char, fill_len, max);
1580 if ((size_t) fill_len > sizeof ab)
1582 as_warn (_("fill pattern too long, truncating to %u"),
1583 (unsigned) sizeof ab);
1584 fill_len = sizeof ab;
1587 md_number_to_chars (ab, fill, fill_len);
1588 do_align (align, ab, fill_len, max);
1592 demand_empty_rest_of_line ();
1595 mri_comment_end (stop, stopc);
1598 /* Handle the .align pseudo-op on machines where ".align 4" means
1599 align to a 4 byte boundary. */
1602 s_align_bytes (int arg)
1607 /* Handle the .align pseudo-op on machines where ".align 4" means align
1608 to a 2**4 boundary. */
1611 s_align_ptwo (int arg)
1616 /* Switch in and out of alternate macro mode. */
1621 demand_empty_rest_of_line ();
1622 macro_set_alternate (on);
1625 /* Read a symbol name from input_line_pointer.
1627 Stores the symbol name in a buffer and returns a pointer to this buffer.
1628 The buffer is xalloc'ed. It is the caller's responsibility to free
1631 The name is not left in the i_l_p buffer as it may need processing
1632 to handle escape characters.
1634 Advances i_l_p to the next non-whitespace character.
1636 If a symbol name could not be read, the routine issues an error
1637 messages, skips to the end of the line and returns NULL. */
1640 read_symbol_name (void)
1646 c = *input_line_pointer++;
1650 #define SYM_NAME_CHUNK_LEN 128
1651 ptrdiff_t len = SYM_NAME_CHUNK_LEN;
1655 start = name = xmalloc (len + 1);
1657 name_end = name + SYM_NAME_CHUNK_LEN;
1659 while (is_a_char (C = next_char_of_string ()))
1661 if (name >= name_end)
1665 sofar = name - start;
1666 len += SYM_NAME_CHUNK_LEN;
1667 start = xrealloc (start, len + 1);
1668 name_end = start + len;
1669 name = start + sofar;
1676 /* Since quoted symbol names can contain non-ASCII characters,
1677 check the string and warn if it cannot be recognised by the
1678 current character set. */
1679 if (mbstowcs (NULL, name, len) == (size_t) -1)
1680 as_warn (_("symbol name not recognised in the current locale"));
1682 else if (is_name_beginner (c) || c == '\001')
1686 name = input_line_pointer - 1;
1688 /* We accept \001 in a name in case this is
1689 being called with a constructed string. */
1690 while (is_part_of_name (c = *input_line_pointer++)
1694 len = (input_line_pointer - name) - 1;
1695 start = xmalloc (len + 1);
1697 memcpy (start, name, len);
1700 /* Skip a name ender char if one is present. */
1701 if (! is_name_ender (c))
1702 --input_line_pointer;
1705 name = start = NULL;
1709 as_bad (_("expected symbol name"));
1710 ignore_rest_of_line ();
1721 s_comm_internal (int param,
1722 symbolS *(*comm_parse_extra) (int, symbolS *, addressT))
1726 symbolS *symbolP = NULL;
1732 stop = mri_comment_field (&stopc);
1734 if ((name = read_symbol_name ()) == NULL)
1737 /* Accept an optional comma after the name. The comma used to be
1738 required, but Irix 5 cc does not generate it for .lcomm. */
1739 if (*input_line_pointer == ',')
1740 input_line_pointer++;
1742 temp = get_absolute_expr (&exp);
1744 size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1;
1745 if (exp.X_op == O_absent)
1747 as_bad (_("missing size expression"));
1748 ignore_rest_of_line ();
1751 else if (temp != size || !exp.X_unsigned)
1753 as_warn (_("size (%ld) out of range, ignored"), (long) temp);
1754 ignore_rest_of_line ();
1758 symbolP = symbol_find_or_make (name);
1759 if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
1760 && !S_IS_COMMON (symbolP))
1762 if (!S_IS_VOLATILE (symbolP))
1765 as_bad (_("symbol `%s' is already defined"), name);
1766 ignore_rest_of_line ();
1769 symbolP = symbol_clone (symbolP, 1);
1770 S_SET_SEGMENT (symbolP, undefined_section);
1771 S_SET_VALUE (symbolP, 0);
1772 symbol_set_frag (symbolP, &zero_address_frag);
1773 S_CLEAR_VOLATILE (symbolP);
1776 size = S_GET_VALUE (symbolP);
1779 else if (size != temp)
1780 as_warn (_("size of \"%s\" is already %ld; not changing to %ld"),
1781 name, (long) size, (long) temp);
1783 if (comm_parse_extra != NULL)
1784 symbolP = (*comm_parse_extra) (param, symbolP, size);
1787 S_SET_VALUE (symbolP, (valueT) size);
1788 S_SET_EXTERNAL (symbolP);
1789 S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
1792 demand_empty_rest_of_line ();
1795 mri_comment_end (stop, stopc);
1804 s_comm_internal (ignore, NULL);
1807 /* The MRI COMMON pseudo-op. We handle this by creating a common
1808 symbol with the appropriate name. We make s_space do the right
1809 thing by increasing the size. */
1812 s_mri_common (int small ATTRIBUTE_UNUSED)
1828 stop = mri_comment_field (&stopc);
1832 name = input_line_pointer;
1833 if (!ISDIGIT (*name))
1834 c = get_symbol_name (& name);
1839 ++input_line_pointer;
1841 while (ISDIGIT (*input_line_pointer));
1843 c = *input_line_pointer;
1844 *input_line_pointer = '\0';
1846 if (line_label != NULL)
1848 alc = (char *) xmalloc (strlen (S_GET_NAME (line_label))
1849 + (input_line_pointer - name)
1851 sprintf (alc, "%s%s", name, S_GET_NAME (line_label));
1856 sym = symbol_find_or_make (name);
1857 c = restore_line_pointer (c);
1861 if (*input_line_pointer != ',')
1865 ++input_line_pointer;
1866 align = get_absolute_expression ();
1869 if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym))
1871 as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym));
1872 ignore_rest_of_line ();
1873 mri_comment_end (stop, stopc);
1877 S_SET_EXTERNAL (sym);
1878 S_SET_SEGMENT (sym, bfd_com_section_ptr);
1879 mri_common_symbol = sym;
1883 S_SET_ALIGN (sym, align);
1888 if (line_label != NULL)
1891 exp.X_op = O_symbol;
1892 exp.X_add_symbol = sym;
1893 exp.X_add_number = 0;
1894 symbol_set_value_expression (line_label, &exp);
1895 symbol_set_frag (line_label, &zero_address_frag);
1896 S_SET_SEGMENT (line_label, expr_section);
1899 /* FIXME: We just ignore the small argument, which distinguishes
1900 COMMON and COMMON.S. I don't know what we can do about it. */
1902 /* Ignore the type and hptype. */
1903 if (*input_line_pointer == ',')
1904 input_line_pointer += 2;
1905 if (*input_line_pointer == ',')
1906 input_line_pointer += 2;
1908 demand_empty_rest_of_line ();
1910 mri_comment_end (stop, stopc);
1914 s_data (int ignore ATTRIBUTE_UNUSED)
1919 temp = get_absolute_expression ();
1920 if (flag_readonly_data_in_text)
1922 section = text_section;
1926 section = data_section;
1928 subseg_set (section, (subsegT) temp);
1930 demand_empty_rest_of_line ();
1933 /* Handle the .appfile pseudo-op. This is automatically generated by
1934 do_scrub_chars when a preprocessor # line comment is seen with a
1935 file name. This default definition may be overridden by the object
1936 or CPU specific pseudo-ops. This function is also the default
1937 definition for .file; the APPFILE argument is 1 for .appfile, 0 for
1941 s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED)
1945 listing_source_file (file);
1947 register_dependency (file);
1949 obj_app_file (file, appfile);
1954 s_app_file (int appfile)
1959 /* Some assemblers tolerate immediately following '"'. */
1960 if ((s = demand_copy_string (&length)) != 0)
1963 = (!new_logical_line_flags (s, -1, 1) && appfile);
1965 /* In MRI mode, the preprocessor may have inserted an extraneous
1968 && *input_line_pointer == '\''
1969 && is_end_of_line[(unsigned char) input_line_pointer[1]])
1970 ++input_line_pointer;
1972 demand_empty_rest_of_line ();
1974 s_app_file_string (s, appfile);
1979 get_linefile_number (int *flag)
1983 if (*input_line_pointer < '0' || *input_line_pointer > '9')
1986 *flag = get_absolute_expression ();
1991 /* Handle the .appline pseudo-op. This is automatically generated by
1992 do_scrub_chars when a preprocessor # line comment is seen. This
1993 default definition may be overridden by the object or CPU specific
1997 s_app_line (int appline)
2002 /* The given number is that of the next line. */
2004 l = get_absolute_expression ();
2005 else if (!get_linefile_number (&l))
2007 ignore_rest_of_line ();
2014 /* Some of the back ends can't deal with non-positive line numbers.
2015 Besides, it's silly. GCC however will generate a line number of
2016 zero when it is pre-processing builtins for assembler-with-cpp files:
2020 We do not want to barf on this, especially since such files are used
2021 in the GCC and GDB testsuites. So we check for negative line numbers
2022 rather than non-positive line numbers. */
2023 as_warn (_("line numbers must be positive; line number %d rejected"),
2034 if (*input_line_pointer == '"')
2035 file = demand_copy_string (&length);
2041 while (get_linefile_number (&this_flag))
2044 /* From GCC's cpp documentation:
2045 1: start of a new file.
2046 2: returning to a file after having included
2048 3: following text comes from a system header file.
2049 4: following text should be treated as extern "C".
2051 4 is nonsensical for the assembler; 3, we don't
2052 care about, so we ignore it just in case a
2053 system header file is included while
2054 preprocessing assembly. So 1 and 2 are all we
2055 care about, and they are mutually incompatible.
2056 new_logical_line_flags() demands this. */
2059 if (flags && flags != (1 << this_flag))
2060 as_warn (_("incompatible flag %i in line directive"),
2063 flags |= 1 << this_flag;
2068 /* We ignore these. */
2072 as_warn (_("unsupported flag %i in line directive"),
2077 if (!is_end_of_line[(unsigned char)*input_line_pointer])
2082 if (appline || file)
2084 new_logical_line_flags (file, l, flags);
2087 listing_source_line (l);
2091 if (appline || file)
2092 demand_empty_rest_of_line ();
2094 ignore_rest_of_line ();
2097 /* Handle the .end pseudo-op. Actually, the real work is done in
2098 read_a_source_file. */
2101 s_end (int ignore ATTRIBUTE_UNUSED)
2105 /* The MRI assembler permits the start symbol to follow .end,
2106 but we don't support that. */
2108 if (!is_end_of_line[(unsigned char) *input_line_pointer]
2109 && *input_line_pointer != '*'
2110 && *input_line_pointer != '!')
2111 as_warn (_("start address not supported"));
2115 /* Handle the .err pseudo-op. */
2118 s_err (int ignore ATTRIBUTE_UNUSED)
2120 as_bad (_(".err encountered"));
2121 demand_empty_rest_of_line ();
2124 /* Handle the .error and .warning pseudo-ops. */
2130 /* The purpose for the conditional assignment is not to
2131 internationalize the directive itself, but that we need a
2132 self-contained message, one that can be passed like the
2133 demand_copy_C_string return value, and with no assumption on the
2134 location of the name of the directive within the message. */
2136 = (err ? _(".error directive invoked in source file")
2137 : _(".warning directive invoked in source file"));
2139 if (!is_it_end_of_statement ())
2141 if (*input_line_pointer != '\"')
2143 as_bad (_("%s argument must be a string"),
2144 err ? ".error" : ".warning");
2145 ignore_rest_of_line ();
2149 msg = demand_copy_C_string (&len);
2157 as_warn ("%s", msg);
2158 demand_empty_rest_of_line ();
2161 /* Handle the MRI fail pseudo-op. */
2164 s_fail (int ignore ATTRIBUTE_UNUSED)
2171 stop = mri_comment_field (&stopc);
2173 temp = get_absolute_expression ();
2175 as_warn (_(".fail %ld encountered"), (long) temp);
2177 as_bad (_(".fail %ld encountered"), (long) temp);
2179 demand_empty_rest_of_line ();
2182 mri_comment_end (stop, stopc);
2186 s_fill (int ignore ATTRIBUTE_UNUSED)
2188 expressionS rep_exp;
2193 #ifdef md_flush_pending_output
2194 md_flush_pending_output ();
2197 #ifdef md_cons_align
2201 get_known_segmented_expression (&rep_exp);
2202 if (*input_line_pointer == ',')
2204 input_line_pointer++;
2205 size = get_absolute_expression ();
2206 if (*input_line_pointer == ',')
2208 input_line_pointer++;
2209 fill = get_absolute_expression ();
2213 /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
2214 #define BSD_FILL_SIZE_CROCK_8 (8)
2215 if (size > BSD_FILL_SIZE_CROCK_8)
2217 as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8);
2218 size = BSD_FILL_SIZE_CROCK_8;
2222 as_warn (_("size negative; .fill ignored"));
2225 else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0)
2227 if (rep_exp.X_add_number < 0)
2228 as_warn (_("repeat < 0; .fill ignored"));
2232 if (size && !need_pass_2)
2234 if (now_seg == absolute_section)
2236 if (rep_exp.X_op != O_constant)
2237 as_bad (_("non-constant fill count for absolute section"));
2238 else if (fill && rep_exp.X_add_number != 0)
2239 as_bad (_("attempt to fill absolute section with non-zero value"));
2240 abs_section_offset += rep_exp.X_add_number * size;
2243 && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0)
2245 as_bad (_("attempt to fill section `%s' with non-zero value"),
2246 segment_name (now_seg));
2248 if (rep_exp.X_op == O_constant)
2250 p = frag_var (rs_fill, (int) size, (int) size,
2251 (relax_substateT) 0, (symbolS *) 0,
2252 (offsetT) rep_exp.X_add_number,
2257 /* We don't have a constant repeat count, so we can't use
2258 rs_fill. We can get the same results out of rs_space,
2259 but its argument is in bytes, so we must multiply the
2260 repeat count by size. */
2263 rep_sym = make_expr_symbol (&rep_exp);
2266 expressionS size_exp;
2267 size_exp.X_op = O_constant;
2268 size_exp.X_add_number = size;
2270 rep_exp.X_op = O_multiply;
2271 rep_exp.X_add_symbol = rep_sym;
2272 rep_exp.X_op_symbol = make_expr_symbol (&size_exp);
2273 rep_exp.X_add_number = 0;
2274 rep_sym = make_expr_symbol (&rep_exp);
2277 p = frag_var (rs_space, (int) size, (int) size,
2278 (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0);
2281 memset (p, 0, (unsigned int) size);
2283 /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
2284 flavoured AS. The following bizarre behaviour is to be
2285 compatible with above. I guess they tried to take up to 8
2286 bytes from a 4-byte expression and they forgot to sign
2288 #define BSD_FILL_SIZE_CROCK_4 (4)
2289 md_number_to_chars (p, (valueT) fill,
2290 (size > BSD_FILL_SIZE_CROCK_4
2291 ? BSD_FILL_SIZE_CROCK_4
2293 /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
2294 but emits no error message because it seems a legal thing to do.
2295 It is a degenerate case of .fill but could be emitted by a
2298 demand_empty_rest_of_line ();
2302 s_globl (int ignore ATTRIBUTE_UNUSED)
2311 stop = mri_comment_field (&stopc);
2315 if ((name = read_symbol_name ()) == NULL)
2318 symbolP = symbol_find_or_make (name);
2319 S_SET_EXTERNAL (symbolP);
2322 c = *input_line_pointer;
2325 input_line_pointer++;
2327 if (is_end_of_line[(unsigned char) *input_line_pointer])
2335 demand_empty_rest_of_line ();
2338 mri_comment_end (stop, stopc);
2341 /* Handle the MRI IRP and IRPC pseudo-ops. */
2352 as_where (&file, &line);
2354 eol = find_end_of_line (input_line_pointer, 0);
2355 sb_build (&s, eol - input_line_pointer);
2356 sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer);
2357 input_line_pointer = eol;
2361 err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb);
2363 as_bad_where (file, line, "%s", err);
2367 input_scrub_include_sb (&out, input_line_pointer, 1);
2369 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2372 /* Handle the .linkonce pseudo-op. This tells the assembler to mark
2373 the section to only be linked once. However, this is not supported
2374 by most object file formats. This takes an optional argument,
2375 which is what to do about duplicates. */
2378 s_linkonce (int ignore ATTRIBUTE_UNUSED)
2380 enum linkonce_type type;
2384 type = LINKONCE_DISCARD;
2386 if (!is_end_of_line[(unsigned char) *input_line_pointer])
2391 c = get_symbol_name (& s);
2392 if (strcasecmp (s, "discard") == 0)
2393 type = LINKONCE_DISCARD;
2394 else if (strcasecmp (s, "one_only") == 0)
2395 type = LINKONCE_ONE_ONLY;
2396 else if (strcasecmp (s, "same_size") == 0)
2397 type = LINKONCE_SAME_SIZE;
2398 else if (strcasecmp (s, "same_contents") == 0)
2399 type = LINKONCE_SAME_CONTENTS;
2401 as_warn (_("unrecognized .linkonce type `%s'"), s);
2403 (void) restore_line_pointer (c);
2406 #ifdef obj_handle_link_once
2407 obj_handle_link_once (type);
2408 #else /* ! defined (obj_handle_link_once) */
2412 if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0)
2413 as_warn (_(".linkonce is not supported for this object file format"));
2415 flags = bfd_get_section_flags (stdoutput, now_seg);
2416 flags |= SEC_LINK_ONCE;
2421 case LINKONCE_DISCARD:
2422 flags |= SEC_LINK_DUPLICATES_DISCARD;
2424 case LINKONCE_ONE_ONLY:
2425 flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
2427 case LINKONCE_SAME_SIZE:
2428 flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
2430 case LINKONCE_SAME_CONTENTS:
2431 flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
2434 if (!bfd_set_section_flags (stdoutput, now_seg, flags))
2435 as_bad (_("bfd_set_section_flags: %s"),
2436 bfd_errmsg (bfd_get_error ()));
2438 #endif /* ! defined (obj_handle_link_once) */
2440 demand_empty_rest_of_line ();
2444 bss_alloc (symbolS *symbolP, addressT size, unsigned int align)
2447 segT current_seg = now_seg;
2448 subsegT current_subseg = now_subseg;
2449 segT bss_seg = bss_section;
2451 #if defined (TC_MIPS) || defined (TC_ALPHA)
2452 if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour
2453 || OUTPUT_FLAVOR == bfd_target_elf_flavour)
2455 /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */
2456 if (size <= bfd_get_gp_size (stdoutput))
2458 bss_seg = subseg_new (".sbss", 1);
2459 seg_info (bss_seg)->bss = 1;
2460 if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC))
2461 as_warn (_("error setting flags for \".sbss\": %s"),
2462 bfd_errmsg (bfd_get_error ()));
2466 subseg_set (bss_seg, 1);
2468 if (align > OCTETS_PER_BYTE_POWER)
2470 record_alignment (bss_seg, align);
2471 frag_align (align, 0, 0);
2474 /* Detach from old frag. */
2475 if (S_GET_SEGMENT (symbolP) == bss_seg)
2476 symbol_get_frag (symbolP)->fr_symbol = NULL;
2478 symbol_set_frag (symbolP, frag_now);
2479 pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL);
2483 S_SET_SIZE (symbolP, size);
2485 S_SET_SEGMENT (symbolP, bss_seg);
2488 /* The symbol may already have been created with a preceding
2489 ".globl" directive -- be careful not to step on storage class
2490 in that case. Otherwise, set it to static. */
2491 if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
2492 S_SET_STORAGE_CLASS (symbolP, C_STAT);
2493 #endif /* OBJ_COFF */
2495 subseg_set (current_seg, current_subseg);
2499 parse_align (int align_bytes)
2505 if (*input_line_pointer != ',')
2508 as_bad (_("expected alignment after size"));
2509 ignore_rest_of_line ();
2513 input_line_pointer++;
2516 align = get_absolute_expr (&exp);
2517 if (exp.X_op == O_absent)
2520 if (!exp.X_unsigned)
2522 as_warn (_("alignment negative; 0 assumed"));
2526 if (align_bytes && align != 0)
2528 /* convert to a power of 2 alignment */
2529 unsigned int alignp2 = 0;
2530 while ((align & 1) == 0)
2531 align >>= 1, ++alignp2;
2534 as_bad (_("alignment not a power of 2"));
2535 ignore_rest_of_line ();
2543 /* Called from s_comm_internal after symbol name and size have been
2544 parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only),
2545 1 if this was a ".bss" directive which has a 3rd argument
2546 (alignment as a power of 2), or 2 if this was a ".bss" directive
2547 with alignment in bytes. */
2550 s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size)
2556 align = parse_align (needs_align - 1);
2557 if (align == (addressT) -1)
2561 /* Assume some objects may require alignment on some systems. */
2562 TC_IMPLICIT_LCOMM_ALIGNMENT (size, align);
2564 bss_alloc (symbolP, size, align);
2569 s_lcomm (int needs_align)
2571 s_comm_internal (needs_align, s_lcomm_internal);
2575 s_lcomm_bytes (int needs_align)
2577 s_comm_internal (needs_align * 2, s_lcomm_internal);
2581 s_lsym (int ignore ATTRIBUTE_UNUSED)
2587 /* We permit ANY defined expression: BSD4.2 demands constants. */
2588 if ((name = read_symbol_name ()) == NULL)
2591 if (*input_line_pointer != ',')
2593 as_bad (_("expected comma after \"%s\""), name);
2597 input_line_pointer++;
2598 expression_and_evaluate (&exp);
2600 if (exp.X_op != O_constant
2601 && exp.X_op != O_register)
2603 as_bad (_("bad expression"));
2607 symbolP = symbol_find_or_make (name);
2609 if (S_GET_SEGMENT (symbolP) == undefined_section)
2611 /* The name might be an undefined .global symbol; be sure to
2612 keep the "external" bit. */
2613 S_SET_SEGMENT (symbolP,
2614 (exp.X_op == O_constant
2617 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
2621 as_bad (_("symbol `%s' is already defined"), name);
2624 demand_empty_rest_of_line ();
2629 ignore_rest_of_line ();
2634 /* Read a line into an sb. Returns the character that ended the line
2635 or zero if there are no more lines. */
2638 get_line_sb (sb *line, int in_macro)
2642 if (input_line_pointer[-1] == '\n')
2643 bump_line_counters ();
2645 if (input_line_pointer >= buffer_limit)
2647 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2648 if (buffer_limit == 0)
2652 eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro);
2653 sb_add_buffer (line, input_line_pointer, eol - input_line_pointer);
2654 input_line_pointer = eol;
2656 /* Don't skip multiple end-of-line characters, because that breaks support
2657 for the IA-64 stop bit (;;) which looks like two consecutive end-of-line
2658 characters but isn't. Instead just skip one end of line character and
2659 return the character skipped so that the caller can re-insert it if
2661 return *input_line_pointer++;
2665 get_non_macro_line_sb (sb *line)
2667 return get_line_sb (line, 0);
2671 get_macro_line_sb (sb *line)
2673 return get_line_sb (line, 1);
2676 /* Define a macro. This is an interface to macro.c. */
2679 s_macro (int ignore ATTRIBUTE_UNUSED)
2687 as_where (&file, &line);
2689 eol = find_end_of_line (input_line_pointer, 0);
2690 sb_build (&s, eol - input_line_pointer);
2691 sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer);
2692 input_line_pointer = eol;
2694 if (line_label != NULL)
2699 name = S_GET_NAME (line_label);
2700 len = strlen (name);
2701 sb_build (&label, len);
2702 sb_add_buffer (&label, name, len);
2703 err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name);
2707 err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name);
2709 as_bad_where (file, line, err, name);
2712 if (line_label != NULL)
2714 S_SET_SEGMENT (line_label, absolute_section);
2715 S_SET_VALUE (line_label, 0);
2716 symbol_set_frag (line_label, &zero_address_frag);
2719 if (((NO_PSEUDO_DOT || flag_m68k_mri)
2720 && hash_find (po_hash, name) != NULL)
2723 && hash_find (po_hash, name + 1) != NULL))
2724 as_warn_where (file,
2726 _("attempt to redefine pseudo-op `%s' ignored"),
2733 /* Handle the .mexit pseudo-op, which immediately exits a macro
2737 s_mexit (int ignore ATTRIBUTE_UNUSED)
2741 cond_exit_macro (macro_nest);
2742 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
2745 as_warn (_("ignoring macro exit outside a macro definition."));
2748 /* Switch in and out of MRI mode. */
2751 s_mri (int ignore ATTRIBUTE_UNUSED)
2754 #ifdef MRI_MODE_CHANGE
2758 on = get_absolute_expression ();
2759 #ifdef MRI_MODE_CHANGE
2760 old_flag = flag_mri;
2779 /* Operator precedence changes in m68k MRI mode, so we need to
2780 update the operator rankings. */
2781 expr_set_precedence ();
2783 #ifdef MRI_MODE_CHANGE
2785 MRI_MODE_CHANGE (on);
2788 demand_empty_rest_of_line ();
2791 /* Handle changing the location counter. */
2794 do_org (segT segment, expressionS *exp, int fill)
2796 if (segment != now_seg
2797 && segment != absolute_section
2798 && segment != expr_section)
2799 as_bad (_("invalid segment \"%s\""), segment_name (segment));
2801 if (now_seg == absolute_section)
2804 as_warn (_("ignoring fill value in absolute section"));
2805 if (exp->X_op != O_constant)
2807 as_bad (_("only constant offsets supported in absolute section"));
2808 exp->X_add_number = 0;
2810 abs_section_offset = exp->X_add_number;
2815 symbolS *sym = exp->X_add_symbol;
2816 offsetT off = exp->X_add_number * OCTETS_PER_BYTE;
2818 if (fill && in_bss ())
2819 as_warn (_("ignoring fill value in section `%s'"),
2820 segment_name (now_seg));
2822 if (exp->X_op != O_constant && exp->X_op != O_symbol)
2824 /* Handle complex expressions. */
2825 sym = make_expr_symbol (exp);
2829 p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0);
2835 s_org (int ignore ATTRIBUTE_UNUSED)
2841 #ifdef md_flush_pending_output
2842 md_flush_pending_output ();
2845 /* The m68k MRI assembler has a different meaning for .org. It
2846 means to create an absolute section at a given address. We can't
2847 support that--use a linker script instead. */
2850 as_bad (_("MRI style ORG pseudo-op not supported"));
2851 ignore_rest_of_line ();
2855 /* Don't believe the documentation of BSD 4.2 AS. There is no such
2856 thing as a sub-segment-relative origin. Any absolute origin is
2857 given a warning, then assumed to be segment-relative. Any
2858 segmented origin expression ("foo+42") had better be in the right
2859 segment or the .org is ignored.
2861 BSD 4.2 AS warns if you try to .org backwards. We cannot because
2862 we never know sub-segment sizes when we are reading code. BSD
2863 will crash trying to emit negative numbers of filler bytes in
2864 certain .orgs. We don't crash, but see as-write for that code.
2866 Don't make frag if need_pass_2==1. */
2867 segment = get_known_segmented_expression (&exp);
2868 if (*input_line_pointer == ',')
2870 input_line_pointer++;
2871 temp_fill = get_absolute_expression ();
2877 do_org (segment, &exp, temp_fill);
2879 demand_empty_rest_of_line ();
2882 /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be
2883 called by the obj-format routine which handles section changing
2884 when in MRI mode. It will create a new section, and return it. It
2885 will set *TYPE to the section type: one of 'C' (code), 'D' (data),
2886 'M' (mixed), or 'R' (romable). The flags will be set in the section. */
2889 s_mri_sect (char *type ATTRIBUTE_UNUSED)
2899 name = input_line_pointer;
2900 if (!ISDIGIT (*name))
2901 c = get_symbol_name (& name);
2906 ++input_line_pointer;
2908 while (ISDIGIT (*input_line_pointer));
2910 c = *input_line_pointer;
2911 *input_line_pointer = '\0';
2914 name = xstrdup (name);
2916 c = restore_line_pointer (c);
2918 seg = subseg_new (name, 0);
2924 ++input_line_pointer;
2925 align = get_absolute_expression ();
2926 record_alignment (seg, align);
2930 if (*input_line_pointer == ',')
2932 c = *++input_line_pointer;
2934 if (c == 'C' || c == 'D' || c == 'M' || c == 'R')
2937 as_bad (_("unrecognized section type"));
2938 ++input_line_pointer;
2943 flags = SEC_NO_FLAGS;
2945 flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE;
2946 else if (*type == 'D' || *type == 'M')
2947 flags = SEC_ALLOC | SEC_LOAD | SEC_DATA;
2948 else if (*type == 'R')
2949 flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM;
2950 if (flags != SEC_NO_FLAGS)
2952 if (!bfd_set_section_flags (stdoutput, seg, flags))
2953 as_warn (_("error setting flags for \"%s\": %s"),
2954 bfd_section_name (stdoutput, seg),
2955 bfd_errmsg (bfd_get_error ()));
2960 /* Ignore the HP type. */
2961 if (*input_line_pointer == ',')
2962 input_line_pointer += 2;
2964 demand_empty_rest_of_line ();
2966 #else /* ! TC_M68K */
2975 c = get_symbol_name (& name);
2977 name = xstrdup (name);
2979 c = restore_line_pointer (c);
2981 seg = subseg_new (name, 0);
2989 ++input_line_pointer;
2991 c = get_symbol_name (& sectype);
2992 if (*sectype == '\0')
2994 else if (strcasecmp (sectype, "text") == 0)
2996 else if (strcasecmp (sectype, "data") == 0)
2998 else if (strcasecmp (sectype, "romdata") == 0)
3001 as_warn (_("unrecognized section type `%s'"), sectype);
3002 (void) restore_line_pointer (c);
3005 if (*input_line_pointer == ',')
3009 ++input_line_pointer;
3011 c = get_symbol_name (& seccmd);
3012 if (strcasecmp (seccmd, "absolute") == 0)
3014 as_bad (_("absolute sections are not supported"));
3015 *input_line_pointer = c;
3016 ignore_rest_of_line ();
3019 else if (strcasecmp (seccmd, "align") == 0)
3023 (void) restore_line_pointer (c);
3024 align = get_absolute_expression ();
3025 record_alignment (seg, align);
3029 as_warn (_("unrecognized section command `%s'"), seccmd);
3030 (void) restore_line_pointer (c);
3034 demand_empty_rest_of_line ();
3036 #else /* ! TC_I960 */
3037 /* The MRI assembler seems to use different forms of .sect for
3038 different targets. */
3039 as_bad ("MRI mode not supported for this target");
3040 ignore_rest_of_line ();
3041 #endif /* ! TC_I960 */
3042 #endif /* ! TC_M68K */
3045 /* Handle the .print pseudo-op. */
3048 s_print (int ignore ATTRIBUTE_UNUSED)
3053 s = demand_copy_C_string (&len);
3056 demand_empty_rest_of_line ();
3059 /* Handle the .purgem pseudo-op. */
3062 s_purgem (int ignore ATTRIBUTE_UNUSED)
3064 if (is_it_end_of_statement ())
3066 demand_empty_rest_of_line ();
3076 c = get_symbol_name (& name);
3077 delete_macro (name);
3078 *input_line_pointer = c;
3079 SKIP_WHITESPACE_AFTER_NAME ();
3081 while (*input_line_pointer++ == ',');
3083 --input_line_pointer;
3084 demand_empty_rest_of_line ();
3087 /* Handle the .endm/.endr pseudo-ops. */
3090 s_bad_end (int endr)
3092 as_warn (_(".end%c encountered without preceding %s"),
3094 endr ? ".rept, .irp, or .irpc" : ".macro");
3095 demand_empty_rest_of_line ();
3098 /* Handle the .rept pseudo-op. */
3101 s_rept (int ignore ATTRIBUTE_UNUSED)
3105 count = get_absolute_expression ();
3107 do_repeat (count, "REPT", "ENDR");
3110 /* This function provides a generic repeat block implementation. It allows
3111 different directives to be used as the start/end keys. */
3114 do_repeat (int count, const char *start, const char *end)
3120 if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb))
3122 as_bad (_("%s without %s"), start, end);
3126 sb_build (&many, count * one.len);
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 /* Like do_repeat except that any text matching EXPANDER in the
3138 block is replaced by the itteration count. */
3141 do_repeat_with_expander (int count,
3144 const char * expander)
3150 if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb))
3152 as_bad (_("%s without %s"), start, end);
3158 if (expander != NULL && strstr (one.ptr, expander) != NULL)
3160 while (count -- > 0)
3166 sb_build (& processed, one.len);
3167 sb_add_sb (& processed, & one);
3168 sub = strstr (processed.ptr, expander);
3169 len = sprintf (sub, "%d", count);
3170 gas_assert (len < 8);
3171 strcpy (sub + len, sub + 8);
3172 processed.len -= (8 - len);
3173 sb_add_sb (& many, & processed);
3174 sb_kill (& processed);
3179 sb_add_sb (&many, &one);
3183 input_scrub_include_sb (&many, input_line_pointer, 1);
3185 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
3188 /* Skip to end of current repeat loop; EXTRA indicates how many additional
3189 input buffers to skip. Assumes that conditionals preceding the loop end
3190 are properly nested.
3192 This function makes it easier to implement a premature "break" out of the
3193 loop. The EXTRA arg accounts for other buffers we might have inserted,
3194 such as line substitutions. */
3197 end_repeat (int extra)
3199 cond_exit_macro (macro_nest);
3200 while (extra-- >= 0)
3201 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
3205 assign_symbol (char *name, int mode)
3209 if (name[0] == '.' && name[1] == '\0')
3211 /* Turn '. = mumble' into a .org mumble. */
3215 segment = get_known_segmented_expression (&exp);
3218 do_org (segment, &exp, 0);
3223 if ((symbolP = symbol_find (name)) == NULL
3224 && (symbolP = md_undefined_symbol (name)) == NULL)
3226 symbolP = symbol_find_or_make (name);
3228 /* When doing symbol listings, play games with dummy fragments living
3229 outside the normal fragment chain to record the file and line info
3231 if (listing & LISTING_SYMBOLS)
3233 extern struct list_info_struct *listing_tail;
3234 fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS));
3235 dummy_frag->line = listing_tail;
3236 dummy_frag->fr_symbol = symbolP;
3237 symbol_set_frag (symbolP, dummy_frag);
3240 #if defined (OBJ_COFF) && !defined (TE_PE)
3241 /* "set" symbols are local unless otherwise specified. */
3242 SF_SET_LOCAL (symbolP);
3246 if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
3248 if ((mode != 0 || !S_IS_VOLATILE (symbolP))
3249 && !S_CAN_BE_REDEFINED (symbolP))
3251 as_bad (_("symbol `%s' is already defined"), name);
3252 symbolP = symbol_clone (symbolP, 0);
3254 /* If the symbol is volatile, copy the symbol and replace the
3255 original with the copy, so that previous uses of the symbol will
3256 retain the value of the symbol at the point of use. */
3257 else if (S_IS_VOLATILE (symbolP))
3258 symbolP = symbol_clone (symbolP, 1);
3262 S_SET_VOLATILE (symbolP);
3264 S_SET_FORWARD_REF (symbolP);
3266 pseudo_set (symbolP);
3269 /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1,
3270 then this is .equiv, and it is an error if the symbol is already
3271 defined. If EQUIV is -1, the symbol additionally is a forward
3279 /* Especial apologies for the random logic:
3280 this just grew, and could be parsed much more simply!
3282 if ((name = read_symbol_name ()) == NULL)
3285 if (*input_line_pointer != ',')
3287 as_bad (_("expected comma after \"%s\""), name);
3288 ignore_rest_of_line ();
3293 input_line_pointer++;
3294 assign_symbol (name, equiv);
3295 demand_empty_rest_of_line ();
3309 #ifdef md_flush_pending_output
3310 md_flush_pending_output ();
3313 #ifdef md_cons_align
3318 stop = mri_comment_field (&stopc);
3320 /* In m68k MRI mode, we need to align to a word boundary, unless
3322 if (flag_m68k_mri && mult > 1)
3324 if (now_seg == absolute_section)
3326 abs_section_offset += abs_section_offset & 1;
3327 if (line_label != NULL)
3328 S_SET_VALUE (line_label, abs_section_offset);
3330 else if (mri_common_symbol != NULL)
3334 mri_val = S_GET_VALUE (mri_common_symbol);
3335 if ((mri_val & 1) != 0)
3337 S_SET_VALUE (mri_common_symbol, mri_val + 1);
3338 if (line_label != NULL)
3340 expressionS *symexp;
3342 symexp = symbol_get_value_expression (line_label);
3343 know (symexp->X_op == O_symbol);
3344 know (symexp->X_add_symbol == mri_common_symbol);
3345 symexp->X_add_number += 1;
3351 do_align (1, (char *) NULL, 0, 0);
3352 if (line_label != NULL)
3354 symbol_set_frag (line_label, frag_now);
3355 S_SET_VALUE (line_label, frag_now_fix ());
3365 if (*input_line_pointer == ',')
3367 ++input_line_pointer;
3372 val.X_op = O_constant;
3373 val.X_add_number = 0;
3376 if ((val.X_op != O_constant
3377 || val.X_add_number < - 0x80
3378 || val.X_add_number > 0xff
3379 || (mult != 0 && mult != 1 && val.X_add_number != 0))
3380 && (now_seg != absolute_section && !in_bss ()))
3382 resolve_expression (&exp);
3383 if (exp.X_op != O_constant)
3384 as_bad (_("unsupported variable size or fill value"));
3391 bytes = mult * exp.X_add_number;
3392 for (i = 0; i < exp.X_add_number; i++)
3393 emit_expr (&val, mult);
3398 if (now_seg == absolute_section || mri_common_symbol != NULL)
3399 resolve_expression (&exp);
3401 if (exp.X_op == O_constant)
3405 repeat = exp.X_add_number;
3412 as_warn (_(".space repeat count is zero, ignored"));
3413 else if (repeat < 0)
3414 as_warn (_(".space repeat count is negative, ignored"));
3418 /* If we are in the absolute section, just bump the offset. */
3419 if (now_seg == absolute_section)
3421 if (val.X_op != O_constant || val.X_add_number != 0)
3422 as_warn (_("ignoring fill value in absolute section"));
3423 abs_section_offset += repeat;
3427 /* If we are secretly in an MRI common section, then
3428 creating space just increases the size of the common
3430 if (mri_common_symbol != NULL)
3432 S_SET_VALUE (mri_common_symbol,
3433 S_GET_VALUE (mri_common_symbol) + repeat);
3438 p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0,
3439 (offsetT) repeat, (char *) 0);
3443 if (now_seg == absolute_section)
3445 as_bad (_("space allocation too complex in absolute section"));
3446 subseg_set (text_section, 0);
3449 if (mri_common_symbol != NULL)
3451 as_bad (_("space allocation too complex in common section"));
3452 mri_common_symbol = NULL;
3456 p = frag_var (rs_space, 1, 1, (relax_substateT) 0,
3457 make_expr_symbol (&exp), (offsetT) 0, (char *) 0);
3460 if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ())
3461 as_warn (_("ignoring fill value in section `%s'"),
3462 segment_name (now_seg));
3464 *p = val.X_add_number;
3469 /* In MRI mode, after an odd number of bytes, we must align to an
3470 even word boundary, unless the next instruction is a dc.b, ds.b
3472 if (flag_mri && (bytes & 1) != 0)
3473 mri_pending_align = 1;
3475 demand_empty_rest_of_line ();
3478 mri_comment_end (stop, stopc);
3481 /* This is like s_space, but the value is a floating point number with
3482 the given precision. This is for the MRI dcb.s pseudo-op and
3486 s_float_space (int float_type)
3490 char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
3494 #ifdef md_cons_align
3499 stop = mri_comment_field (&stopc);
3501 count = get_absolute_expression ();
3504 if (*input_line_pointer != ',')
3506 as_bad (_("missing value"));
3507 ignore_rest_of_line ();
3509 mri_comment_end (stop, stopc);
3513 ++input_line_pointer;
3517 /* Skip any 0{letter} that may be present. Don't even check if the
3518 * letter is legal. */
3519 if (input_line_pointer[0] == '0'
3520 && ISALPHA (input_line_pointer[1]))
3521 input_line_pointer += 2;
3523 /* Accept :xxxx, where the x's are hex digits, for a floating point
3524 with the exact digits specified. */
3525 if (input_line_pointer[0] == ':')
3527 flen = hex_float (float_type, temp);
3530 ignore_rest_of_line ();
3532 mri_comment_end (stop, stopc);
3540 err = md_atof (float_type, temp, &flen);
3541 know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
3542 know (err != NULL || flen > 0);
3545 as_bad (_("bad floating literal: %s"), err);
3546 ignore_rest_of_line ();
3548 mri_comment_end (stop, stopc);
3553 while (--count >= 0)
3557 p = frag_more (flen);
3558 memcpy (p, temp, (unsigned int) flen);
3561 demand_empty_rest_of_line ();
3564 mri_comment_end (stop, stopc);
3567 /* Handle the .struct pseudo-op, as found in MIPS assemblers. */
3570 s_struct (int ignore ATTRIBUTE_UNUSED)
3576 stop = mri_comment_field (&stopc);
3577 abs_section_offset = get_absolute_expression ();
3578 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
3579 /* The ELF backend needs to know that we are changing sections, so
3580 that .previous works correctly. */
3582 obj_elf_section_change_hook ();
3584 subseg_set (absolute_section, 0);
3585 demand_empty_rest_of_line ();
3587 mri_comment_end (stop, stopc);
3591 s_text (int ignore ATTRIBUTE_UNUSED)
3595 temp = get_absolute_expression ();
3596 subseg_set (text_section, (subsegT) temp);
3597 demand_empty_rest_of_line ();
3600 /* .weakref x, y sets x as an alias to y that, as long as y is not
3601 referenced directly, will cause y to become a weak symbol. */
3603 s_weakref (int ignore ATTRIBUTE_UNUSED)
3610 if ((name = read_symbol_name ()) == NULL)
3613 symbolP = symbol_find_or_make (name);
3615 if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
3617 if (!S_IS_VOLATILE (symbolP))
3619 as_bad (_("symbol `%s' is already defined"), name);
3622 symbolP = symbol_clone (symbolP, 1);
3623 S_CLEAR_VOLATILE (symbolP);
3628 if (*input_line_pointer != ',')
3630 as_bad (_("expected comma after \"%s\""), name);
3634 input_line_pointer++;
3639 if ((name = read_symbol_name ()) == NULL)
3642 if ((symbolP2 = symbol_find_noref (name, 1)) == NULL
3643 && (symbolP2 = md_undefined_symbol (name)) == NULL)
3645 symbolP2 = symbol_find_or_make (name);
3646 S_SET_WEAKREFD (symbolP2);
3650 symbolS *symp = symbolP2;
3652 while (S_IS_WEAKREFR (symp) && symp != symbolP)
3654 expressionS *expP = symbol_get_value_expression (symp);
3656 gas_assert (expP->X_op == O_symbol
3657 && expP->X_add_number == 0);
3658 symp = expP->X_add_symbol;
3660 if (symp == symbolP)
3664 loop = concat (S_GET_NAME (symbolP),
3665 " => ", S_GET_NAME (symbolP2), (const char *) NULL);
3668 while (symp != symbolP)
3670 char *old_loop = loop;
3672 symp = symbol_get_value_expression (symp)->X_add_symbol;
3673 loop = concat (loop, " => ", S_GET_NAME (symp),
3674 (const char *) NULL);
3678 as_bad (_("%s: would close weakref loop: %s"),
3679 S_GET_NAME (symbolP), loop);
3683 ignore_rest_of_line ();
3687 /* Short-circuiting instead of just checking here might speed
3688 things up a tiny little bit, but loop error messages would
3689 miss intermediate links. */
3690 /* symbolP2 = symp; */
3693 memset (&exp, 0, sizeof (exp));
3694 exp.X_op = O_symbol;
3695 exp.X_add_symbol = symbolP2;
3697 S_SET_SEGMENT (symbolP, undefined_section);
3698 symbol_set_value_expression (symbolP, &exp);
3699 symbol_set_frag (symbolP, &zero_address_frag);
3700 S_SET_WEAKREFR (symbolP);
3702 demand_empty_rest_of_line ();
3707 ignore_rest_of_line ();
3713 /* Verify that we are at the end of a line. If not, issue an error and
3717 demand_empty_rest_of_line (void)
3720 if (is_end_of_line[(unsigned char) *input_line_pointer])
3721 input_line_pointer++;
3724 if (ISPRINT (*input_line_pointer))
3725 as_bad (_("junk at end of line, first unrecognized character is `%c'"),
3726 *input_line_pointer);
3728 as_bad (_("junk at end of line, first unrecognized character valued 0x%x"),
3729 *input_line_pointer);
3730 ignore_rest_of_line ();
3733 /* Return pointing just after end-of-line. */
3734 know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
3737 /* Silently advance to the end of line. Use this after already having
3738 issued an error about something bad. */
3741 ignore_rest_of_line (void)
3743 while (input_line_pointer < buffer_limit
3744 && !is_end_of_line[(unsigned char) *input_line_pointer])
3745 input_line_pointer++;
3747 input_line_pointer++;
3749 /* Return pointing just after end-of-line. */
3750 know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
3753 /* Sets frag for given symbol to zero_address_frag, except when the
3754 symbol frag is already set to a dummy listing frag. */
3757 set_zero_frag (symbolS *symbolP)
3759 if (symbol_get_frag (symbolP)->fr_type != rs_dummy)
3760 symbol_set_frag (symbolP, &zero_address_frag);
3763 /* In: Pointer to a symbol.
3764 Input_line_pointer->expression.
3766 Out: Input_line_pointer->just after any whitespace after expression.
3767 Tried to set symbol to value of expression.
3768 Will change symbols type, value, and frag; */
3771 pseudo_set (symbolS *symbolP)
3776 know (symbolP); /* NULL pointer is logic error. */
3778 if (!S_IS_FORWARD_REF (symbolP))
3779 (void) expression (&exp);
3781 (void) deferred_expression (&exp);
3783 if (exp.X_op == O_illegal)
3784 as_bad (_("illegal expression"));
3785 else if (exp.X_op == O_absent)
3786 as_bad (_("missing expression"));
3787 else if (exp.X_op == O_big)
3789 if (exp.X_add_number > 0)
3790 as_bad (_("bignum invalid"));
3792 as_bad (_("floating point number invalid"));
3794 else if (exp.X_op == O_subtract
3795 && !S_IS_FORWARD_REF (symbolP)
3796 && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
3797 && (symbol_get_frag (exp.X_add_symbol)
3798 == symbol_get_frag (exp.X_op_symbol)))
3800 exp.X_op = O_constant;
3801 exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)
3802 - S_GET_VALUE (exp.X_op_symbol));
3805 if (symbol_section_p (symbolP))
3807 as_bad ("attempt to set value of section symbol");
3816 exp.X_add_number = 0;
3819 S_SET_SEGMENT (symbolP, absolute_section);
3820 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
3821 set_zero_frag (symbolP);
3825 #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
3826 if (S_IS_EXTERNAL (symbolP))
3828 as_bad ("can't equate global symbol `%s' with register name",
3829 S_GET_NAME (symbolP));
3833 S_SET_SEGMENT (symbolP, reg_section);
3834 S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
3835 set_zero_frag (symbolP);
3836 symbol_get_value_expression (symbolP)->X_op = O_register;
3840 seg = S_GET_SEGMENT (exp.X_add_symbol);
3841 /* For x=undef+const, create an expression symbol.
3842 For x=x+const, just update x except when x is an undefined symbol
3843 For x=defined+const, evaluate x. */
3844 if (symbolP == exp.X_add_symbol
3845 && (seg != undefined_section
3846 || !symbol_constant_p (symbolP)))
3848 *symbol_X_add_number (symbolP) += exp.X_add_number;
3851 else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section)
3853 symbolS *s = exp.X_add_symbol;
3855 if (S_IS_COMMON (s))
3856 as_bad (_("`%s' can't be equated to common symbol '%s'"),
3857 S_GET_NAME (symbolP), S_GET_NAME (s));
3859 S_SET_SEGMENT (symbolP, seg);
3860 S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s));
3861 symbol_set_frag (symbolP, symbol_get_frag (s));
3862 copy_symbol_attributes (symbolP, s);
3865 S_SET_SEGMENT (symbolP, undefined_section);
3866 symbol_set_value_expression (symbolP, &exp);
3867 copy_symbol_attributes (symbolP, exp.X_add_symbol);
3868 set_zero_frag (symbolP);
3872 /* The value is some complex expression. */
3873 S_SET_SEGMENT (symbolP, expr_section);
3874 symbol_set_value_expression (symbolP, &exp);
3875 set_zero_frag (symbolP);
3882 CONStruct more frag of .bytes, or .words etc.
3883 Should need_pass_2 be 1 then emit no frag(s).
3884 This understands EXPRESSIONS.
3888 This has a split personality. We use expression() to read the
3889 value. We can detect if the value won't fit in a byte or word.
3890 But we can't detect if expression() discarded significant digits
3891 in the case of a long. Not worth the crocks required to fix it. */
3893 /* Select a parser for cons expressions. */
3895 /* Some targets need to parse the expression in various fancy ways.
3896 You can define TC_PARSE_CONS_EXPRESSION to do whatever you like
3897 (for example, the HPPA does this). Otherwise, you can define
3898 BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or
3899 REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these
3900 are defined, which is the normal case, then only simple expressions
3905 parse_mri_cons (expressionS *exp, unsigned int nbytes);
3908 #ifndef TC_PARSE_CONS_EXPRESSION
3909 #ifdef BITFIELD_CONS_EXPRESSIONS
3910 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
3911 (parse_bitfield_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE)
3913 parse_bitfield_cons (expressionS *exp, unsigned int nbytes);
3915 #ifdef REPEAT_CONS_EXPRESSIONS
3916 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
3917 (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE)
3919 parse_repeat_cons (expressionS *exp, unsigned int nbytes);
3922 /* If we haven't gotten one yet, just call expression. */
3923 #ifndef TC_PARSE_CONS_EXPRESSION
3924 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
3925 (expression (EXP), TC_PARSE_CONS_RETURN_NONE)
3930 do_parse_cons_expression (expressionS *exp,
3931 int nbytes ATTRIBUTE_UNUSED)
3933 (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes);
3937 /* Worker to do .byte etc statements.
3938 Clobbers input_line_pointer and checks end-of-line. */
3941 cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */
3949 #ifdef md_flush_pending_output
3950 md_flush_pending_output ();
3954 stop = mri_comment_field (&stopc);
3956 if (is_it_end_of_statement ())
3958 demand_empty_rest_of_line ();
3960 mri_comment_end (stop, stopc);
3964 #ifdef TC_ADDRESS_BYTES
3966 nbytes = TC_ADDRESS_BYTES ();
3969 #ifdef md_cons_align
3970 md_cons_align (nbytes);
3976 TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE;
3977 #ifdef TC_CONS_FIX_CHECK
3978 fixS **cur_fix = &frchain_now->fix_tail;
3980 if (*cur_fix != NULL)
3981 cur_fix = &(*cur_fix)->fx_next;
3986 parse_mri_cons (&exp, (unsigned int) nbytes);
3991 if (*input_line_pointer == '"')
3993 as_bad (_("unexpected `\"' in expression"));
3994 ignore_rest_of_line ();
3998 ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);
4003 if (exp.X_op == O_symbol)
4004 exp.X_op = O_symbol_rva;
4006 as_fatal (_("rva without symbol"));
4008 emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret);
4009 #ifdef TC_CONS_FIX_CHECK
4010 TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix);
4014 while (*input_line_pointer++ == ',');
4016 /* In MRI mode, after an odd number of bytes, we must align to an
4017 even word boundary, unless the next instruction is a dc.b, ds.b
4019 if (flag_mri && nbytes == 1 && (c & 1) != 0)
4020 mri_pending_align = 1;
4022 input_line_pointer--; /* Put terminator back into stream. */
4024 demand_empty_rest_of_line ();
4027 mri_comment_end (stop, stopc);
4033 cons_worker (size, 0);
4039 cons_worker (size, 1);
4042 /* .reloc offset, reloc_name, symbol+addend. */
4045 s_reloc (int ignore ATTRIBUTE_UNUSED)
4052 struct reloc_list *reloc;
4053 struct _bfd_rel { char *name; bfd_reloc_code_real_type code; };
4054 static struct _bfd_rel bfd_relocs[] = {
4055 { "NONE", BFD_RELOC_NONE },
4056 { "8", BFD_RELOC_8 },
4057 { "16", BFD_RELOC_16 },
4058 { "32", BFD_RELOC_32 },
4059 { "64", BFD_RELOC_64 }
4062 reloc = (struct reloc_list *) xmalloc (sizeof (*reloc));
4065 stop = mri_comment_field (&stopc);
4074 as_bad (_("missing or bad offset expression"));
4077 exp.X_add_symbol = section_symbol (now_seg);
4078 exp.X_op = O_symbol;
4081 if (exp.X_add_number == 0)
4083 reloc->u.a.offset_sym = exp.X_add_symbol;
4088 reloc->u.a.offset_sym = make_expr_symbol (&exp);
4093 if (*input_line_pointer != ',')
4095 as_bad (_("missing reloc type"));
4099 ++input_line_pointer;
4101 c = get_symbol_name (& r_name);
4102 if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0)
4106 for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++)
4107 if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0)
4109 reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput,
4110 bfd_relocs[i].code);
4115 reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name);
4116 *input_line_pointer = c;
4117 if (reloc->u.a.howto == NULL)
4119 as_bad (_("unrecognized reloc type"));
4123 exp.X_op = O_absent;
4124 SKIP_WHITESPACE_AFTER_NAME ();
4125 if (*input_line_pointer == ',')
4127 ++input_line_pointer;
4135 as_bad (_("bad reloc expression"));
4137 ignore_rest_of_line ();
4140 mri_comment_end (stop, stopc);
4143 reloc->u.a.sym = NULL;
4144 reloc->u.a.addend = 0;
4147 reloc->u.a.sym = NULL;
4148 reloc->u.a.addend = exp.X_add_number;
4151 reloc->u.a.sym = exp.X_add_symbol;
4152 reloc->u.a.addend = exp.X_add_number;
4155 reloc->u.a.sym = make_expr_symbol (&exp);
4156 reloc->u.a.addend = 0;
4160 as_where (&reloc->file, &reloc->line);
4161 reloc->next = reloc_list;
4164 demand_empty_rest_of_line ();
4166 mri_comment_end (stop, stopc);
4169 /* Put the contents of expression EXP into the object file using
4170 NBYTES bytes. If need_pass_2 is 1, this does nothing. */
4173 emit_expr (expressionS *exp, unsigned int nbytes)
4175 emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE);
4179 emit_expr_with_reloc (expressionS *exp,
4180 unsigned int nbytes,
4181 TC_PARSE_CONS_RETURN_TYPE reloc)
4185 valueT extra_digit = 0;
4187 /* Don't do anything if we are going to make another pass. */
4192 dot_value = frag_now_fix ();
4193 dot_frag = frag_now;
4197 /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will
4198 appear as a four byte positive constant in the .line section,
4199 followed by a 2 byte 0xffff. Look for that case here. */
4201 static int dwarf_line = -1;
4203 if (strcmp (segment_name (now_seg), ".line") != 0)
4205 else if (dwarf_line >= 0
4207 && exp->X_op == O_constant
4208 && (exp->X_add_number == -1 || exp->X_add_number == 0xffff))
4209 listing_source_line ((unsigned int) dwarf_line);
4210 else if (nbytes == 4
4211 && exp->X_op == O_constant
4212 && exp->X_add_number >= 0)
4213 dwarf_line = exp->X_add_number;
4218 /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will
4219 appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte
4220 AT_sibling (0x12) followed by a four byte address of the sibling
4221 followed by a 2 byte AT_name (0x38) followed by the name of the
4222 file. We look for that case here. */
4224 static int dwarf_file = 0;
4226 if (strcmp (segment_name (now_seg), ".debug") != 0)
4228 else if (dwarf_file == 0
4230 && exp->X_op == O_constant
4231 && exp->X_add_number == 0x11)
4233 else if (dwarf_file == 1
4235 && exp->X_op == O_constant
4236 && exp->X_add_number == 0x12)
4238 else if (dwarf_file == 2
4241 else if (dwarf_file == 3
4243 && exp->X_op == O_constant
4244 && exp->X_add_number == 0x38)
4249 /* The variable dwarf_file_string tells stringer that the string
4250 may be the name of the source file. */
4251 if (dwarf_file == 4)
4252 dwarf_file_string = 1;
4254 dwarf_file_string = 0;
4259 if (check_eh_frame (exp, &nbytes))
4264 /* Handle a negative bignum. */
4266 && exp->X_add_number == 0
4267 && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big
4268 && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0)
4271 unsigned long carry;
4273 exp = symbol_get_value_expression (exp->X_add_symbol);
4275 /* Negate the bignum: one's complement each digit and add 1. */
4277 for (i = 0; i < exp->X_add_number; i++)
4281 next = (((~(generic_bignum[i] & LITTLENUM_MASK))
4284 generic_bignum[i] = next & LITTLENUM_MASK;
4285 carry = next >> LITTLENUM_NUMBER_OF_BITS;
4288 /* We can ignore any carry out, because it will be handled by
4289 extra_digit if it is needed. */
4291 extra_digit = (valueT) -1;
4295 if (op == O_absent || op == O_illegal)
4297 as_warn (_("zero assumed for missing expression"));
4298 exp->X_add_number = 0;
4301 else if (op == O_big && exp->X_add_number <= 0)
4303 as_bad (_("floating point number invalid"));
4304 exp->X_add_number = 0;
4307 else if (op == O_register)
4309 as_warn (_("register value used as expression"));
4313 /* Allow `.word 0' in the absolute section. */
4314 if (now_seg == absolute_section)
4316 if (op != O_constant || exp->X_add_number != 0)
4317 as_bad (_("attempt to store value in absolute section"));
4318 abs_section_offset += nbytes;
4322 /* Allow `.word 0' in BSS style sections. */
4323 if ((op != O_constant || exp->X_add_number != 0) && in_bss ())
4324 as_bad (_("attempt to store non-zero value in section `%s'"),
4325 segment_name (now_seg));
4327 p = frag_more ((int) nbytes);
4329 if (reloc != TC_PARSE_CONS_RETURN_NONE)
4331 emit_expr_fix (exp, nbytes, frag_now, p, reloc);
4335 #ifndef WORKING_DOT_WORD
4336 /* If we have the difference of two symbols in a word, save it on
4337 the broken_words list. See the code in write.c. */
4338 if (op == O_subtract && nbytes == 2)
4340 struct broken_word *x;
4342 x = (struct broken_word *) xmalloc (sizeof (struct broken_word));
4343 x->next_broken_word = broken_words;
4346 x->subseg = now_subseg;
4348 x->word_goes_here = p;
4350 x->add = exp->X_add_symbol;
4351 x->sub = exp->X_op_symbol;
4352 x->addnum = exp->X_add_number;
4360 /* If we have an integer, but the number of bytes is too large to
4361 pass to md_number_to_chars, handle it as a bignum. */
4362 if (op == O_constant && nbytes > sizeof (valueT))
4364 extra_digit = exp->X_unsigned ? 0 : -1;
4365 convert_to_bignum (exp, !exp->X_unsigned);
4369 if (op == O_constant)
4377 /* JF << of >= number of bits in the object is undefined. In
4378 particular SPARC (Sun 4) has problems. */
4379 if (nbytes >= sizeof (valueT))
4382 if (nbytes > sizeof (valueT))
4385 hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
4389 /* Don't store these bits. */
4390 mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes);
4391 hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
4394 unmask = ~mask; /* Do store these bits. */
4397 "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
4398 mask = ~(unmask >> 1); /* Includes sign bit now. */
4401 get = exp->X_add_number;
4403 if ((get & mask) != 0
4404 && ((get & mask) != mask
4405 || (get & hibit) == 0))
4406 { /* Leading bits contain both 0s & 1s. */
4407 #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG
4409 as_warn (_("value 0x%llx truncated to 0x%llx"),
4410 (unsigned long long) get, (unsigned long long) use);
4412 as_warn (_("value 0x%I64x truncated to 0x%I64x"),
4413 (unsigned long long) get, (unsigned long long) use);
4416 as_warn (_("value 0x%lx truncated to 0x%lx"),
4417 (unsigned long) get, (unsigned long) use);
4420 /* Put bytes in right order. */
4421 md_number_to_chars (p, use, (int) nbytes);
4423 else if (op == O_big)
4426 LITTLENUM_TYPE *nums;
4428 size = exp->X_add_number * CHARS_PER_LITTLENUM;
4431 int i = nbytes / CHARS_PER_LITTLENUM;
4434 LITTLENUM_TYPE sign = 0;
4435 if ((generic_bignum[--i]
4436 & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0)
4437 sign = ~(LITTLENUM_TYPE) 0;
4438 while (++i < exp->X_add_number)
4439 if (generic_bignum[i] != sign)
4442 if (i < exp->X_add_number)
4443 as_warn (_("bignum truncated to %d bytes"), nbytes);
4449 md_number_to_chars (p, (valueT) generic_bignum[0], 1);
4452 know (nbytes % CHARS_PER_LITTLENUM == 0);
4454 if (target_big_endian)
4456 while (nbytes > size)
4458 md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
4459 nbytes -= CHARS_PER_LITTLENUM;
4460 p += CHARS_PER_LITTLENUM;
4463 nums = generic_bignum + size / CHARS_PER_LITTLENUM;
4464 while (size >= CHARS_PER_LITTLENUM)
4467 md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
4468 size -= CHARS_PER_LITTLENUM;
4469 p += CHARS_PER_LITTLENUM;
4474 nums = generic_bignum;
4475 while (size >= CHARS_PER_LITTLENUM)
4477 md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
4479 size -= CHARS_PER_LITTLENUM;
4480 p += CHARS_PER_LITTLENUM;
4481 nbytes -= CHARS_PER_LITTLENUM;
4484 while (nbytes >= CHARS_PER_LITTLENUM)
4486 md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
4487 nbytes -= CHARS_PER_LITTLENUM;
4488 p += CHARS_PER_LITTLENUM;
4493 emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE);
4497 emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p,
4498 TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED)
4501 unsigned int size = nbytes;
4503 memset (p, 0, size);
4505 /* Generate a fixS to record the symbol value. */
4507 #ifdef TC_CONS_FIX_NEW
4508 TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r);
4510 if (r != TC_PARSE_CONS_RETURN_NONE)
4512 reloc_howto_type *reloc_howto;
4514 reloc_howto = bfd_reloc_type_lookup (stdoutput, r);
4515 size = bfd_get_reloc_size (reloc_howto);
4519 as_bad (_("%s relocations do not fit in %u bytes\n"),
4520 reloc_howto->name, nbytes);
4523 else if (target_big_endian)
4524 offset = nbytes - size;
4545 as_bad (_("unsupported BFD relocation size %u"), size);
4548 fix_new_exp (frag, p - frag->fr_literal + offset, size,
4553 #ifdef BITFIELD_CONS_EXPRESSIONS
4555 /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as
4556 w:x,y:z, where w and y are bitwidths and x and y are values. They
4557 then pack them all together. We do a little better in that we allow
4558 them in words, longs, etc. and we'll pack them in target byte order
4561 The rules are: pack least significant bit first, if a field doesn't
4562 entirely fit, put it in the next unit. Overflowing the bitfield is
4563 explicitly *not* even a warning. The bitwidth should be considered
4566 To use this function the tc-XXX.h file should define
4567 BITFIELD_CONS_EXPRESSIONS. */
4570 parse_bitfield_cons (exp, nbytes)
4572 unsigned int nbytes;
4574 unsigned int bits_available = BITS_PER_CHAR * nbytes;
4575 char *hold = input_line_pointer;
4577 (void) expression (exp);
4579 if (*input_line_pointer == ':')
4586 unsigned long width;
4588 if (*input_line_pointer != ':')
4590 input_line_pointer = hold;
4592 } /* Next piece is not a bitfield. */
4594 /* In the general case, we can't allow
4595 full expressions with symbol
4596 differences and such. The relocation
4597 entries for symbols not defined in this
4598 assembly would require arbitrary field
4599 widths, positions, and masks which most
4600 of our current object formats don't
4603 In the specific case where a symbol
4604 *is* defined in this assembly, we
4605 *could* build fixups and track it, but
4606 this could lead to confusion for the
4607 backends. I'm lazy. I'll take any
4608 SEG_ABSOLUTE. I think that means that
4609 you can use a previous .set or
4610 .equ type symbol. xoxorich. */
4612 if (exp->X_op == O_absent)
4614 as_warn (_("using a bit field width of zero"));
4615 exp->X_add_number = 0;
4616 exp->X_op = O_constant;
4617 } /* Implied zero width bitfield. */
4619 if (exp->X_op != O_constant)
4621 *input_line_pointer = '\0';
4622 as_bad (_("field width \"%s\" too complex for a bitfield"), hold);
4623 *input_line_pointer = ':';
4624 demand_empty_rest_of_line ();
4626 } /* Too complex. */
4628 if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes))
4630 as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"),
4631 width, nbytes, (BITS_PER_CHAR * nbytes));
4632 width = BITS_PER_CHAR * nbytes;
4635 if (width > bits_available)
4637 /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */
4638 input_line_pointer = hold;
4639 exp->X_add_number = value;
4644 hold = ++input_line_pointer;
4646 (void) expression (exp);
4647 if (exp->X_op != O_constant)
4649 char cache = *input_line_pointer;
4651 *input_line_pointer = '\0';
4652 as_bad (_("field value \"%s\" too complex for a bitfield"), hold);
4653 *input_line_pointer = cache;
4654 demand_empty_rest_of_line ();
4656 } /* Too complex. */
4658 value |= ((~(-(1 << width)) & exp->X_add_number)
4659 << ((BITS_PER_CHAR * nbytes) - bits_available));
4661 if ((bits_available -= width) == 0
4662 || is_it_end_of_statement ()
4663 || *input_line_pointer != ',')
4666 } /* All the bitfields we're gonna get. */
4668 hold = ++input_line_pointer;
4669 (void) expression (exp);
4672 exp->X_add_number = value;
4673 exp->X_op = O_constant;
4674 exp->X_unsigned = 1;
4675 exp->X_extrabit = 0;
4679 #endif /* BITFIELD_CONS_EXPRESSIONS */
4681 /* Handle an MRI style string expression. */
4685 parse_mri_cons (expressionS *exp, unsigned int nbytes)
4687 if (*input_line_pointer != '\''
4688 && (input_line_pointer[1] != '\''
4689 || (*input_line_pointer != 'A'
4690 && *input_line_pointer != 'E')))
4691 (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes);
4695 unsigned int result = 0;
4697 /* An MRI style string. Cut into as many bytes as will fit into
4698 a nbyte chunk, left justify if necessary, and separate with
4699 commas so we can try again later. */
4700 if (*input_line_pointer == 'A')
4701 ++input_line_pointer;
4702 else if (*input_line_pointer == 'E')
4704 as_bad (_("EBCDIC constants are not supported"));
4705 ++input_line_pointer;
4708 input_line_pointer++;
4709 for (scan = 0; scan < nbytes; scan++)
4711 if (*input_line_pointer == '\'')
4713 if (input_line_pointer[1] == '\'')
4715 input_line_pointer++;
4720 result = (result << 8) | (*input_line_pointer++);
4724 while (scan < nbytes)
4730 /* Create correct expression. */
4731 exp->X_op = O_constant;
4732 exp->X_add_number = result;
4734 /* Fake it so that we can read the next char too. */
4735 if (input_line_pointer[0] != '\'' ||
4736 (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))
4738 input_line_pointer -= 2;
4739 input_line_pointer[0] = ',';
4740 input_line_pointer[1] = '\'';
4743 input_line_pointer++;
4746 #endif /* TC_M68K */
4748 #ifdef REPEAT_CONS_EXPRESSIONS
4750 /* Parse a repeat expression for cons. This is used by the MIPS
4751 assembler. The format is NUMBER:COUNT; NUMBER appears in the
4752 object file COUNT times.
4754 To use this for a target, define REPEAT_CONS_EXPRESSIONS. */
4757 parse_repeat_cons (exp, nbytes)
4759 unsigned int nbytes;
4766 if (*input_line_pointer != ':')
4768 /* No repeat count. */
4772 ++input_line_pointer;
4773 expression (&count);
4774 if (count.X_op != O_constant
4775 || count.X_add_number <= 0)
4777 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4781 /* The cons function is going to output this expression once. So we
4782 output it count - 1 times. */
4783 for (i = count.X_add_number - 1; i > 0; i--)
4784 emit_expr (exp, nbytes);
4787 #endif /* REPEAT_CONS_EXPRESSIONS */
4789 /* Parse a floating point number represented as a hex constant. This
4790 permits users to specify the exact bits they want in the floating
4794 hex_float (int float_type, char *bytes)
4826 as_bad (_("unknown floating type type '%c'"), float_type);
4830 /* It would be nice if we could go through expression to parse the
4831 hex constant, but if we get a bignum it's a pain to sort it into
4832 the buffer correctly. */
4834 while (hex_p (*input_line_pointer) || *input_line_pointer == '_')
4838 /* The MRI assembler accepts arbitrary underscores strewn about
4839 through the hex constant, so we ignore them as well. */
4840 if (*input_line_pointer == '_')
4842 ++input_line_pointer;
4848 as_warn (_("floating point constant too large"));
4851 d = hex_value (*input_line_pointer) << 4;
4852 ++input_line_pointer;
4853 while (*input_line_pointer == '_')
4854 ++input_line_pointer;
4855 if (hex_p (*input_line_pointer))
4857 d += hex_value (*input_line_pointer);
4858 ++input_line_pointer;
4860 if (target_big_endian)
4863 bytes[length - i - 1] = d;
4869 if (target_big_endian)
4870 memset (bytes + i, 0, length - i);
4872 memset (bytes, 0, length - i);
4880 CONStruct some more frag chars of .floats .ffloats etc.
4881 Makes 0 or more new frags.
4882 If need_pass_2 == 1, no frags are emitted.
4883 This understands only floating literals, not expressions. Sorry.
4885 A floating constant is defined by atof_generic(), except it is preceded
4886 by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
4887 reading, I decided to be incompatible. This always tries to give you
4888 rounded bits to the precision of the pseudo-op. Former AS did premature
4889 truncation, restored noisy bits instead of trailing 0s AND gave you
4890 a choice of 2 flavours of noise according to which of 2 floating-point
4891 scanners you directed AS to use.
4893 In: input_line_pointer->whitespace before, or '0' of flonum. */
4896 float_cons (/* Clobbers input_line-pointer, checks end-of-line. */
4897 int float_type /* 'f':.ffloat ... 'F':.float ... */)
4900 int length; /* Number of chars in an object. */
4901 char *err; /* Error from scanning floating literal. */
4902 char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
4904 if (is_it_end_of_statement ())
4906 demand_empty_rest_of_line ();
4910 if (now_seg == absolute_section)
4912 as_bad (_("attempt to store float in absolute section"));
4913 ignore_rest_of_line ();
4919 as_bad (_("attempt to store float in section `%s'"),
4920 segment_name (now_seg));
4921 ignore_rest_of_line ();
4925 #ifdef md_flush_pending_output
4926 md_flush_pending_output ();
4929 #ifdef md_cons_align
4935 /* input_line_pointer->1st char of a flonum (we hope!). */
4938 /* Skip any 0{letter} that may be present. Don't even check if the
4939 letter is legal. Someone may invent a "z" format and this routine
4940 has no use for such information. Lusers beware: you get
4941 diagnostics if your input is ill-conditioned. */
4942 if (input_line_pointer[0] == '0'
4943 && ISALPHA (input_line_pointer[1]))
4944 input_line_pointer += 2;
4946 /* Accept :xxxx, where the x's are hex digits, for a floating
4947 point with the exact digits specified. */
4948 if (input_line_pointer[0] == ':')
4950 ++input_line_pointer;
4951 length = hex_float (float_type, temp);
4954 ignore_rest_of_line ();
4960 err = md_atof (float_type, temp, &length);
4961 know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
4962 know (err != NULL || length > 0);
4965 as_bad (_("bad floating literal: %s"), err);
4966 ignore_rest_of_line ();
4977 #ifdef REPEAT_CONS_EXPRESSIONS
4978 if (*input_line_pointer == ':')
4980 expressionS count_exp;
4982 ++input_line_pointer;
4983 expression (&count_exp);
4985 if (count_exp.X_op != O_constant
4986 || count_exp.X_add_number <= 0)
4987 as_warn (_("unresolvable or nonpositive repeat count; using 1"));
4989 count = count_exp.X_add_number;
4993 while (--count >= 0)
4995 p = frag_more (length);
4996 memcpy (p, temp, (unsigned int) length);
5001 while (*input_line_pointer++ == ',');
5003 /* Put terminator back into stream. */
5004 --input_line_pointer;
5005 demand_empty_rest_of_line ();
5010 Note - we are using the DWARF standard's definition of LEB128 encoding
5011 where each 7-bit value is a stored in a byte, *not* an octet. This
5012 means that on targets where a byte contains multiple octets there is
5013 a *huge waste of space*. (This also means that we do not have to
5014 have special versions of these functions for when OCTETS_PER_BYTE_POWER
5017 If the 7-bit values were to be packed into N-bit bytes (where N > 8)
5018 we would then have to consider whether multiple, successive LEB128
5019 values should be packed into the bytes without padding (bad idea) or
5020 whether each LEB128 number is padded out to a whole number of bytes.
5021 Plus you have to decide on the endianness of packing octets into a
5024 /* Return the size of a LEB128 value in bytes. */
5026 static inline unsigned int
5027 sizeof_sleb128 (offsetT value)
5034 byte = (value & 0x7f);
5035 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
5036 Fortunately, we can structure things so that the extra work reduces
5037 to a noop on systems that do things "properly". */
5038 value = (value >> 7) | ~(-(offsetT)1 >> 7);
5041 while (!(((value == 0) && ((byte & 0x40) == 0))
5042 || ((value == -1) && ((byte & 0x40) != 0))));
5047 static inline unsigned int
5048 sizeof_uleb128 (valueT value)
5063 sizeof_leb128 (valueT value, int sign)
5066 return sizeof_sleb128 ((offsetT) value);
5068 return sizeof_uleb128 (value);
5071 /* Output a LEB128 value. Returns the number of bytes used. */
5073 static inline unsigned int
5074 output_sleb128 (char *p, offsetT value)
5081 unsigned byte = (value & 0x7f);
5083 /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
5084 Fortunately, we can structure things so that the extra work reduces
5085 to a noop on systems that do things "properly". */
5086 value = (value >> 7) | ~(-(offsetT)1 >> 7);
5088 more = !((((value == 0) && ((byte & 0x40) == 0))
5089 || ((value == -1) && ((byte & 0x40) != 0))));
5100 static inline unsigned int
5101 output_uleb128 (char *p, valueT value)
5107 unsigned byte = (value & 0x7f);
5111 /* More bytes to follow. */
5122 output_leb128 (char *p, valueT value, int sign)
5125 return output_sleb128 (p, (offsetT) value);
5127 return output_uleb128 (p, value);
5130 /* Do the same for bignums. We combine sizeof with output here in that
5131 we don't output for NULL values of P. It isn't really as critical as
5132 for "normal" values that this be streamlined. Returns the number of
5135 static inline unsigned int
5136 output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size)
5143 /* Strip leading sign extensions off the bignum. */
5145 && bignum[size - 1] == LITTLENUM_MASK
5146 && bignum[size - 2] > LITTLENUM_MASK / 2)
5151 /* OR in the next part of the littlenum. */
5152 val |= (*bignum << loaded);
5153 loaded += LITTLENUM_NUMBER_OF_BITS;
5157 /* Add bytes until there are less than 7 bits left in VAL
5158 or until every non-sign bit has been written. */
5165 || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1))
5172 while ((byte & 0x80) != 0 && loaded >= 7);
5176 /* Mop up any left-over bits (of which there will be less than 7). */
5177 if ((byte & 0x80) != 0)
5179 /* Sign-extend VAL. */
5180 if (val & (1 << (loaded - 1)))
5181 val |= ~0U << loaded;
5190 static inline unsigned int
5191 output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size)
5198 /* Strip leading zeros off the bignum. */
5199 /* XXX: Is this needed? */
5200 while (size > 0 && bignum[size - 1] == 0)
5205 if (loaded < 7 && size > 0)
5207 val |= (*bignum << loaded);
5208 loaded += 8 * CHARS_PER_LITTLENUM;
5217 if (size > 0 || val)
5224 while (byte & 0x80);
5230 output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign)
5233 return output_big_sleb128 (p, bignum, size);
5235 return output_big_uleb128 (p, bignum, size);
5238 /* Generate the appropriate fragments for a given expression to emit a
5239 leb128 value. SIGN is 1 for sleb, 0 for uleb. */
5242 emit_leb128_expr (expressionS *exp, int sign)
5244 operatorT op = exp->X_op;
5245 unsigned int nbytes;
5247 if (op == O_absent || op == O_illegal)
5249 as_warn (_("zero assumed for missing expression"));
5250 exp->X_add_number = 0;
5253 else if (op == O_big && exp->X_add_number <= 0)
5255 as_bad (_("floating point number invalid"));
5256 exp->X_add_number = 0;
5259 else if (op == O_register)
5261 as_warn (_("register value used as expression"));
5264 else if (op == O_constant
5266 && (exp->X_add_number < 0) == !exp->X_extrabit)
5268 /* We're outputting a signed leb128 and the sign of X_add_number
5269 doesn't reflect the sign of the original value. Convert EXP
5270 to a correctly-extended bignum instead. */
5271 convert_to_bignum (exp, exp->X_extrabit);
5275 if (now_seg == absolute_section)
5277 if (op != O_constant || exp->X_add_number != 0)
5278 as_bad (_("attempt to store value in absolute section"));
5279 abs_section_offset++;
5283 if ((op != O_constant || exp->X_add_number != 0) && in_bss ())
5284 as_bad (_("attempt to store non-zero value in section `%s'"),
5285 segment_name (now_seg));
5287 /* Let check_eh_frame know that data is being emitted. nbytes == -1 is
5288 a signal that this is leb128 data. It shouldn't optimize this away. */
5289 nbytes = (unsigned int) -1;
5290 if (check_eh_frame (exp, &nbytes))
5293 /* Let the backend know that subsequent data may be byte aligned. */
5294 #ifdef md_cons_align
5298 if (op == O_constant)
5300 /* If we've got a constant, emit the thing directly right now. */
5302 valueT value = exp->X_add_number;
5306 size = sizeof_leb128 (value, sign);
5307 p = frag_more (size);
5308 if (output_leb128 (p, value, sign) > size)
5311 else if (op == O_big)
5313 /* O_big is a different sort of constant. */
5318 size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign);
5319 p = frag_more (size);
5320 if (output_big_leb128 (p, generic_bignum, exp->X_add_number, sign) > size)
5325 /* Otherwise, we have to create a variable sized fragment and
5326 resolve things later. */
5328 frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign,
5329 make_expr_symbol (exp), 0, (char *) NULL);
5333 /* Parse the .sleb128 and .uleb128 pseudos. */
5340 #ifdef md_flush_pending_output
5341 md_flush_pending_output ();
5347 emit_leb128_expr (&exp, sign);
5349 while (*input_line_pointer++ == ',');
5351 input_line_pointer--;
5352 demand_empty_rest_of_line ();
5356 stringer_append_char (int c, int bitsize)
5359 as_bad (_("attempt to store non-empty string in section `%s'"),
5360 segment_name (now_seg));
5362 if (!target_big_endian)
5363 FRAG_APPEND_1_CHAR (c);
5368 FRAG_APPEND_1_CHAR (0);
5369 FRAG_APPEND_1_CHAR (0);
5370 FRAG_APPEND_1_CHAR (0);
5371 FRAG_APPEND_1_CHAR (0);
5374 FRAG_APPEND_1_CHAR (0);
5375 FRAG_APPEND_1_CHAR (0);
5378 FRAG_APPEND_1_CHAR (0);
5383 /* Called with invalid bitsize argument. */
5387 if (target_big_endian)
5388 FRAG_APPEND_1_CHAR (c);
5391 /* Worker to do .ascii etc statements.
5392 Reads 0 or more ',' separated, double-quoted strings.
5393 Caller should have checked need_pass_2 is FALSE because we don't
5395 Checks for end-of-line.
5396 BITS_APPENDZERO says how many bits are in a target char.
5397 The bottom bit is set if a NUL char should be appended to the strings. */
5400 stringer (int bits_appendzero)
5402 const int bitsize = bits_appendzero & ~7;
5403 const int append_zero = bits_appendzero & 1;
5405 #if !defined(NO_LISTING) && defined (OBJ_ELF)
5409 #ifdef md_flush_pending_output
5410 md_flush_pending_output ();
5413 #ifdef md_cons_align
5417 /* If we have been switched into the abs_section then we
5418 will not have an obstack onto which we can hang strings. */
5419 if (now_seg == absolute_section)
5421 as_bad (_("strings must be placed into a section"));
5422 ignore_rest_of_line ();
5426 /* The following awkward logic is to parse ZERO or more strings,
5427 comma separated. Recall a string expression includes spaces
5428 before the opening '\"' and spaces after the closing '\"'.
5429 We fake a leading ',' if there is (supposed to be)
5430 a 1st, expression. We keep demanding expressions for each ','. */
5431 if (is_it_end_of_statement ())
5433 c = 0; /* Skip loop. */
5434 ++input_line_pointer; /* Compensate for end of loop. */
5438 c = ','; /* Do loop. */
5441 while (c == ',' || c == '<' || c == '"')
5444 switch (*input_line_pointer)
5447 ++input_line_pointer; /*->1st char of string. */
5448 #if !defined(NO_LISTING) && defined (OBJ_ELF)
5449 start = input_line_pointer;
5452 while (is_a_char (c = next_char_of_string ()))
5453 stringer_append_char (c, bitsize);
5456 stringer_append_char (0, bitsize);
5458 know (input_line_pointer[-1] == '\"');
5460 #if !defined(NO_LISTING) && defined (OBJ_ELF)
5461 /* In ELF, when gcc is emitting DWARF 1 debugging output, it
5462 will emit .string with a filename in the .debug section
5463 after a sequence of constants. See the comment in
5464 emit_expr for the sequence. emit_expr will set
5465 dwarf_file_string to non-zero if this string might be a
5466 source file name. */
5467 if (strcmp (segment_name (now_seg), ".debug") != 0)
5468 dwarf_file_string = 0;
5469 else if (dwarf_file_string)
5471 c = input_line_pointer[-1];
5472 input_line_pointer[-1] = '\0';
5473 listing_source_file (start);
5474 input_line_pointer[-1] = c;
5480 input_line_pointer++;
5481 c = get_single_number ();
5482 stringer_append_char (c, bitsize);
5483 if (*input_line_pointer != '>')
5484 as_bad (_("expected <nn>"));
5486 input_line_pointer++;
5489 input_line_pointer++;
5493 c = *input_line_pointer;
5496 demand_empty_rest_of_line ();
5499 /* FIXME-SOMEDAY: I had trouble here on characters with the
5500 high bits set. We'll probably also have trouble with
5501 multibyte chars, wide chars, etc. Also be careful about
5502 returning values bigger than 1 byte. xoxorich. */
5505 next_char_of_string (void)
5509 c = *input_line_pointer++ & CHAR_MASK;
5517 as_warn (_("unterminated string; newline inserted"));
5518 bump_line_counters ();
5521 #ifndef NO_STRING_ESCAPES
5523 switch (c = *input_line_pointer++ & CHAR_MASK)
5551 break; /* As itself. */
5567 for (i = 0, number = 0;
5568 ISDIGIT (c) && i < 3;
5569 c = *input_line_pointer++, i++)
5571 number = number * 8 + c - '0';
5574 c = number & CHAR_MASK;
5576 --input_line_pointer;
5585 c = *input_line_pointer++;
5586 while (ISXDIGIT (c))
5589 number = number * 16 + c - '0';
5590 else if (ISUPPER (c))
5591 number = number * 16 + c - 'A' + 10;
5593 number = number * 16 + c - 'a' + 10;
5594 c = *input_line_pointer++;
5596 c = number & CHAR_MASK;
5597 --input_line_pointer;
5602 /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
5603 as_warn (_("unterminated string; newline inserted"));
5605 bump_line_counters ();
5610 #ifdef ONLY_STANDARD_ESCAPES
5611 as_bad (_("bad escaped character in string"));
5613 #endif /* ONLY_STANDARD_ESCAPES */
5618 #endif /* ! defined (NO_STRING_ESCAPES) */
5627 get_segmented_expression (expressionS *expP)
5631 retval = expression (expP);
5632 if (expP->X_op == O_illegal
5633 || expP->X_op == O_absent
5634 || expP->X_op == O_big)
5636 as_bad (_("expected address expression"));
5637 expP->X_op = O_constant;
5638 expP->X_add_number = 0;
5639 retval = absolute_section;
5645 get_known_segmented_expression (expressionS *expP)
5647 segT retval = get_segmented_expression (expP);
5649 if (retval == undefined_section)
5651 /* There is no easy way to extract the undefined symbol from the
5653 if (expP->X_add_symbol != NULL
5654 && S_GET_SEGMENT (expP->X_add_symbol) != expr_section)
5655 as_warn (_("symbol \"%s\" undefined; zero assumed"),
5656 S_GET_NAME (expP->X_add_symbol));
5658 as_warn (_("some symbol undefined; zero assumed"));
5659 retval = absolute_section;
5660 expP->X_op = O_constant;
5661 expP->X_add_number = 0;
5666 char /* Return terminator. */
5667 get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */)
5669 /* FIXME: val_pointer should probably be offsetT *. */
5670 *val_pointer = (long) get_absolute_expression ();
5671 return (*input_line_pointer++);
5674 /* Like demand_copy_string, but return NULL if the string contains any '\0's.
5675 Give a warning if that happens. */
5678 demand_copy_C_string (int *len_pointer)
5682 if ((s = demand_copy_string (len_pointer)) != 0)
5686 for (len = *len_pointer; len > 0; len--)
5693 as_bad (_("this string may not contain \'\\0\'"));
5701 /* Demand string, but return a safe (=private) copy of the string.
5702 Return NULL if we can't read a string here. */
5705 demand_copy_string (int *lenP)
5713 if (*input_line_pointer == '\"')
5715 input_line_pointer++; /* Skip opening quote. */
5717 while (is_a_char (c = next_char_of_string ()))
5719 obstack_1grow (¬es, c);
5722 /* JF this next line is so demand_copy_C_string will return a
5723 null terminated string. */
5724 obstack_1grow (¬es, '\0');
5725 retval = (char *) obstack_finish (¬es);
5729 as_bad (_("missing string"));
5731 ignore_rest_of_line ();
5737 /* In: Input_line_pointer->next character.
5739 Do: Skip input_line_pointer over all whitespace.
5741 Out: 1 if input_line_pointer->end-of-line. */
5744 is_it_end_of_statement (void)
5747 return (is_end_of_line[(unsigned char) *input_line_pointer]);
5751 equals (char *sym_name, int reassign)
5756 input_line_pointer++;
5757 if (*input_line_pointer == '=')
5758 input_line_pointer++;
5759 if (reassign < 0 && *input_line_pointer == '=')
5760 input_line_pointer++;
5762 while (*input_line_pointer == ' ' || *input_line_pointer == '\t')
5763 input_line_pointer++;
5766 stop = mri_comment_field (&stopc);
5768 assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign);
5772 demand_empty_rest_of_line ();
5773 mri_comment_end (stop, stopc);
5777 /* .incbin -- include a file verbatim at the current location. */
5780 s_incbin (int x ATTRIBUTE_UNUSED)
5791 #ifdef md_flush_pending_output
5792 md_flush_pending_output ();
5795 #ifdef md_cons_align
5800 filename = demand_copy_string (& len);
5801 if (filename == NULL)
5806 /* Look for optional skip and count. */
5807 if (* input_line_pointer == ',')
5809 ++ input_line_pointer;
5810 skip = get_absolute_expression ();
5814 if (* input_line_pointer == ',')
5816 ++ input_line_pointer;
5818 count = get_absolute_expression ();
5820 as_warn (_(".incbin count zero, ignoring `%s'"), filename);
5826 demand_empty_rest_of_line ();
5828 /* Try opening absolute path first, then try include dirs. */
5829 binfile = fopen (filename, FOPEN_RB);
5830 if (binfile == NULL)
5834 path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5);
5836 for (i = 0; i < include_dir_count; i++)
5838 sprintf (path, "%s/%s", include_dirs[i], filename);
5840 binfile = fopen (path, FOPEN_RB);
5841 if (binfile != NULL)
5845 if (binfile == NULL)
5846 as_bad (_("file not found: %s"), filename);
5849 path = xstrdup (filename);
5855 register_dependency (path);
5857 /* Compute the length of the file. */
5858 if (fseek (binfile, 0, SEEK_END) != 0)
5860 as_bad (_("seek to end of .incbin file failed `%s'"), path);
5863 file_len = ftell (binfile);
5865 /* If a count was not specified use the remainder of the file. */
5867 count = file_len - skip;
5869 if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len)
5871 as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"),
5872 skip, count, file_len);
5876 if (fseek (binfile, skip, SEEK_SET) != 0)
5878 as_bad (_("could not skip to %ld in file `%s'"), skip, path);
5882 /* Allocate frag space and store file contents in it. */
5883 binfrag = frag_more (count);
5885 bytes = fread (binfrag, 1, count, binfile);
5887 as_warn (_("truncated file `%s', %ld of %ld bytes read"),
5888 path, bytes, count);
5891 if (binfile != NULL)
5897 /* .include -- include a file at this point. */
5900 s_include (int arg ATTRIBUTE_UNUSED)
5909 filename = demand_copy_string (&i);
5910 if (filename == NULL)
5912 /* demand_copy_string has already printed an error and
5913 called ignore_rest_of_line. */
5921 while (!is_end_of_line[(unsigned char) *input_line_pointer]
5922 && *input_line_pointer != ' '
5923 && *input_line_pointer != '\t')
5925 obstack_1grow (¬es, *input_line_pointer);
5926 ++input_line_pointer;
5930 obstack_1grow (¬es, '\0');
5931 filename = (char *) obstack_finish (¬es);
5932 while (!is_end_of_line[(unsigned char) *input_line_pointer])
5933 ++input_line_pointer;
5936 demand_empty_rest_of_line ();
5937 path = (char *) xmalloc ((unsigned long) i
5938 + include_dir_maxlen + 5 /* slop */ );
5940 for (i = 0; i < include_dir_count; i++)
5942 strcpy (path, include_dirs[i]);
5944 strcat (path, filename);
5945 if (0 != (try_file = fopen (path, FOPEN_RT)))
5955 /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
5956 register_dependency (path);
5957 input_scrub_insert_file (path);
5961 add_include_dir (char *path)
5965 if (include_dir_count == 0)
5967 include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs));
5968 include_dirs[0] = "."; /* Current dir. */
5969 include_dir_count = 2;
5973 include_dir_count++;
5975 (char **) xrealloc (include_dirs,
5976 include_dir_count * sizeof (*include_dirs));
5979 include_dirs[include_dir_count - 1] = path; /* New one. */
5982 if (i > include_dir_maxlen)
5983 include_dir_maxlen = i;
5986 /* Output debugging information to denote the source file. */
5989 generate_file_debug (void)
5991 if (debug_type == DEBUG_STABS)
5992 stabs_generate_asm_file ();
5995 /* Output line number debugging information for the current source line. */
5998 generate_lineno_debug (void)
6002 case DEBUG_UNSPECIFIED:
6007 stabs_generate_asm_lineno ();
6010 ecoff_generate_asm_lineno ();
6013 /* ??? We could here indicate to dwarf2dbg.c that something
6014 has changed. However, since there is additional backend
6015 support that is required (calling dwarf2_emit_insn), we
6016 let dwarf2dbg.c call as_where on its own. */
6021 /* Output debugging information to mark a function entry point or end point.
6022 END_P is zero for .func, and non-zero for .endfunc. */
6027 do_s_func (end_p, NULL);
6030 /* Subroutine of s_func so targets can choose a different default prefix.
6031 If DEFAULT_PREFIX is NULL, use the target's "leading char". */
6034 do_s_func (int end_p, const char *default_prefix)
6036 /* Record the current function so that we can issue an error message for
6037 misplaced .func,.endfunc, and also so that .endfunc needs no
6039 static char *current_name;
6040 static char *current_label;
6044 if (current_name == NULL)
6046 as_bad (_("missing .func"));
6047 ignore_rest_of_line ();
6051 if (debug_type == DEBUG_STABS)
6052 stabs_generate_asm_endfunc (current_name, current_label);
6054 current_name = current_label = NULL;
6059 char delim1, delim2;
6061 if (current_name != NULL)
6063 as_bad (_(".endfunc missing for previous .func"));
6064 ignore_rest_of_line ();
6068 delim1 = get_symbol_name (& name);
6069 name = xstrdup (name);
6070 *input_line_pointer = delim1;
6071 SKIP_WHITESPACE_AFTER_NAME ();
6072 if (*input_line_pointer != ',')
6076 if (asprintf (&label, "%s%s", default_prefix, name) == -1)
6077 as_fatal ("%s", xstrerror (errno));
6081 char leading_char = bfd_get_symbol_leading_char (stdoutput);
6082 /* Missing entry point, use function's name with the leading
6086 if (asprintf (&label, "%c%s", leading_char, name) == -1)
6087 as_fatal ("%s", xstrerror (errno));
6095 ++input_line_pointer;
6097 delim2 = get_symbol_name (& label);
6098 label = xstrdup (label);
6099 restore_line_pointer (delim2);
6102 if (debug_type == DEBUG_STABS)
6103 stabs_generate_asm_func (name, label);
6105 current_name = name;
6106 current_label = label;
6109 demand_empty_rest_of_line ();
6112 #ifdef HANDLE_BUNDLE
6115 s_bundle_align_mode (int arg ATTRIBUTE_UNUSED)
6117 unsigned int align = get_absolute_expression ();
6119 demand_empty_rest_of_line ();
6121 if (align > (unsigned int) TC_ALIGN_LIMIT)
6122 as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"),
6123 (unsigned int) TC_ALIGN_LIMIT);
6125 if (bundle_lock_frag != NULL)
6127 as_bad (_("cannot change .bundle_align_mode inside .bundle_lock"));
6131 bundle_align_p2 = align;
6135 s_bundle_lock (int arg ATTRIBUTE_UNUSED)
6137 demand_empty_rest_of_line ();
6139 if (bundle_align_p2 == 0)
6141 as_bad (_(".bundle_lock is meaningless without .bundle_align_mode"));
6145 if (bundle_lock_depth == 0)
6147 bundle_lock_frchain = frchain_now;
6148 bundle_lock_frag = start_bundle ();
6150 ++bundle_lock_depth;
6154 s_bundle_unlock (int arg ATTRIBUTE_UNUSED)
6158 demand_empty_rest_of_line ();
6160 if (bundle_lock_frag == NULL)
6162 as_bad (_(".bundle_unlock without preceding .bundle_lock"));
6166 gas_assert (bundle_align_p2 > 0);
6168 gas_assert (bundle_lock_depth > 0);
6169 if (--bundle_lock_depth > 0)
6172 size = pending_bundle_size (bundle_lock_frag);
6174 if (size > (1U << bundle_align_p2))
6175 as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"),
6176 size, 1 << bundle_align_p2);
6178 finish_bundle (bundle_lock_frag, size);
6180 bundle_lock_frag = NULL;
6181 bundle_lock_frchain = NULL;
6184 #endif /* HANDLE_BUNDLE */
6187 s_ignore (int arg ATTRIBUTE_UNUSED)
6189 ignore_rest_of_line ();
6193 read_print_statistics (FILE *file)
6195 hash_print_statistics (file, "pseudo-op table", po_hash);
6198 /* Inserts the given line into the input stream.
6200 This call avoids macro/conditionals nesting checking, since the contents of
6201 the line are assumed to replace the contents of a line already scanned.
6203 An appropriate use of this function would be substitution of input lines when
6204 called by md_start_line_hook(). The given line is assumed to already be
6205 properly scrubbed. */
6208 input_scrub_insert_line (const char *line)
6211 size_t len = strlen (line);
6212 sb_build (&newline, len);
6213 sb_add_buffer (&newline, line, len);
6214 input_scrub_include_sb (&newline, input_line_pointer, 0);
6216 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
6219 /* Insert a file into the input stream; the path must resolve to an actual
6220 file; no include path searching or dependency registering is performed. */
6223 input_scrub_insert_file (char *path)
6225 input_scrub_include_file (path, input_line_pointer);
6226 buffer_limit = input_scrub_next_buffer (&input_line_pointer);
6229 /* Find the end of a line, considering quotation and escaping of quotes. */
6231 #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS)
6232 # define TC_SINGLE_QUOTE_STRINGS 1
6236 _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED,
6239 char inquote = '\0';
6242 while (!is_end_of_line[(unsigned char) *s]
6243 || (inquote && !ISCNTRL (*s))
6244 || (inquote == '\'' && flag_mri)
6245 #ifdef TC_EOL_IN_INSN
6246 || (insn && TC_EOL_IN_INSN (s))
6248 /* PR 6926: When we are parsing the body of a macro the sequence
6249 \@ is special - it refers to the invocation count. If the @
6250 character happens to be registered as a line-separator character
6251 by the target, then the is_end_of_line[] test above will have
6252 returned true, but we need to ignore the line separating
6253 semantics in this particular case. */
6254 || (in_macro && inescape && *s == '@')
6257 if (mri_string && *s == '\'')
6261 else if (*s == '\\')
6265 #ifdef TC_SINGLE_QUOTE_STRINGS
6266 || (TC_SINGLE_QUOTE_STRINGS && *s == '\'')
6273 as_warn (_("missing closing `%c'"), inquote);
6274 if (inescape && !ignore_input ())
6275 as_warn (_("stray `\\'"));
6280 find_end_of_line (char *s, int mri_string)
6282 return _find_end_of_line (s, mri_string, 0, 0);