1999-05-03 07:29:11 +00:00
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/* read.h - of read.c
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2001-03-08 23:24:26 +00:00
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Copyright 1986, 1990, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2007-07-03 11:01:12 +00:00
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2000, 2001, 2002, 2003, 2004, 2005, 2007
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1999-05-03 07:29:11 +00:00
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Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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2007-07-03 11:01:12 +00:00
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the Free Software Foundation; either version 3, or (at your option)
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1999-05-03 07:29:11 +00:00
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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2000-12-14 01:12:43 +00:00
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along with GAS; see the file COPYING. If not, write to the Free
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2005-05-05 09:13:19 +00:00
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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1999-05-03 07:29:11 +00:00
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2000-12-14 01:12:43 +00:00
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extern char *input_line_pointer; /* -> char we are parsing now. */
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1999-05-03 07:29:11 +00:00
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2000-12-14 01:12:43 +00:00
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/* Define to make whitespace be allowed in many syntactically
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unnecessary places. Normally undefined. For compatibility with
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ancient GNU cc. */
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1999-05-03 07:29:11 +00:00
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/* #undef PERMIT_WHITESPACE */
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2000-12-14 01:12:43 +00:00
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#define PERMIT_WHITESPACE
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1999-05-03 07:29:11 +00:00
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#ifdef PERMIT_WHITESPACE
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2000-12-14 01:12:43 +00:00
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#define SKIP_WHITESPACE() \
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2004-02-06 16:00:21 +00:00
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((*input_line_pointer == ' ') ? ++input_line_pointer : 0)
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1999-05-03 07:29:11 +00:00
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#else
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#define SKIP_WHITESPACE() know(*input_line_pointer != ' ' )
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#endif
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#define LEX_NAME (1) /* may continue a name */
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#define LEX_BEGIN_NAME (2) /* may begin a name */
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1999-06-05 18:19:09 +00:00
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#define LEX_END_NAME (4) /* ends a name */
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1999-05-03 07:29:11 +00:00
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#define is_name_beginner(c) \
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( lex_type[(unsigned char) (c)] & LEX_BEGIN_NAME )
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#define is_part_of_name(c) \
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( lex_type[(unsigned char) (c)] & LEX_NAME )
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1999-06-05 18:19:09 +00:00
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#define is_name_ender(c) \
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( lex_type[(unsigned char) (c)] & LEX_END_NAME )
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1999-05-03 07:29:11 +00:00
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#ifndef is_a_char
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#define CHAR_MASK (0xff)
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#define NOT_A_CHAR (CHAR_MASK+1)
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2000-12-14 01:12:43 +00:00
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#define is_a_char(c) (((unsigned) (c)) <= CHAR_MASK)
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1999-05-03 07:29:11 +00:00
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#endif /* is_a_char() */
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extern char lex_type[];
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extern char is_end_of_line[];
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2003-11-27 19:14:41 +00:00
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extern int is_it_end_of_statement (void);
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2005-05-17 14:02:30 +00:00
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extern char *find_end_of_line (char *, int);
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1999-05-03 07:29:11 +00:00
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extern int target_big_endian;
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/* These are initialized by the CPU specific target files (tc-*.c). */
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extern const char comment_chars[];
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extern const char line_comment_chars[];
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extern const char line_separator_chars[];
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/* Table of -I directories. */
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extern char **include_dirs;
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extern int include_dir_count;
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extern int include_dir_maxlen;
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/* The offset in the absolute section. */
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extern addressT abs_section_offset;
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/* The label on a line, used by some of the pseudo-ops. */
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extern symbolS *line_label;
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/* This is used to support MRI common sections. */
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extern symbolS *mri_common_symbol;
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2000-12-05 00:56:09 +00:00
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/* True if a stabs line debug statement is currently being emitted. */
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2000-12-12 21:21:39 +00:00
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extern int outputting_stabs_line_debug;
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2000-12-05 00:56:09 +00:00
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1999-05-03 07:29:11 +00:00
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/* Possible arguments to .linkonce. */
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2000-12-14 01:12:43 +00:00
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enum linkonce_type {
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1999-05-03 07:29:11 +00:00
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LINKONCE_UNSET = 0,
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LINKONCE_DISCARD,
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LINKONCE_ONE_ONLY,
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LINKONCE_SAME_SIZE,
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LINKONCE_SAME_CONTENTS
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};
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2004-02-09 12:12:42 +00:00
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#ifndef TC_CASE_SENSITIVE
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2000-11-02 19:32:47 +00:00
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extern char original_case_string[];
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#endif
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2003-11-27 19:14:41 +00:00
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extern void pop_insert (const pseudo_typeS *);
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1999-05-03 07:29:11 +00:00
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extern unsigned int get_stab_string_offset
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2003-11-27 19:14:41 +00:00
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(const char *string, const char *stabstr_secname);
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extern void aout_process_stab (int, const char *, int, int, int);
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extern char *demand_copy_string (int *lenP);
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extern char *demand_copy_C_string (int *len_pointer);
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extern char get_absolute_expression_and_terminator (long *val_pointer);
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extern offsetT get_absolute_expression (void);
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extern unsigned int next_char_of_string (void);
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extern void s_mri_sect (char *);
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extern char *mri_comment_field (char *);
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extern void mri_comment_end (char *, int);
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extern void add_include_dir (char *path);
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extern void cons (int nbytes);
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extern void demand_empty_rest_of_line (void);
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extern void emit_expr (expressionS *exp, unsigned int nbytes);
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extern void equals (char *sym_name, int reassign);
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extern void float_cons (int float_type);
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extern void ignore_rest_of_line (void);
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2005-05-17 14:02:30 +00:00
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#define discard_rest_of_line ignore_rest_of_line
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2003-11-27 19:14:41 +00:00
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extern int output_leb128 (char *, valueT, int sign);
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extern void pseudo_set (symbolS * symbolP);
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extern void read_a_source_file (char *name);
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extern void read_begin (void);
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extern void read_print_statistics (FILE *);
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extern int sizeof_leb128 (valueT, int sign);
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extern void stabs_generate_asm_file (void);
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extern void stabs_generate_asm_lineno (void);
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extern void stabs_generate_asm_func (const char *, const char *);
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extern void stabs_generate_asm_endfunc (const char *, const char *);
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extern void do_repeat (int,const char *,const char *);
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extern void end_repeat (int);
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extern void do_parse_cons_expression (expressionS *, int);
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extern void generate_lineno_debug (void);
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extern void s_abort (int) ATTRIBUTE_NORETURN;
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extern void s_align_bytes (int arg);
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extern void s_align_ptwo (int);
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2003-12-13 08:23:05 +00:00
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extern void bss_alloc (symbolS *, addressT, int);
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extern offsetT parse_align (int);
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extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
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2003-12-13 08:59:24 +00:00
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extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
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2004-11-10 03:28:45 +00:00
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extern void s_app_file_string (char *, int);
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2003-11-27 19:14:41 +00:00
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extern void s_app_file (int);
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extern void s_app_line (int);
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extern void s_comm (int);
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extern void s_data (int);
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extern void s_desc (int);
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extern void s_else (int arg);
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extern void s_elseif (int arg);
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extern void s_end (int arg);
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extern void s_endif (int arg);
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extern void s_err (int);
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2004-11-22 13:05:27 +00:00
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extern void s_errwarn (int);
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2003-11-27 19:14:41 +00:00
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extern void s_fail (int);
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extern void s_fill (int);
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extern void s_float_space (int mult);
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extern void s_func (int);
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extern void s_globl (int arg);
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extern void s_if (int arg);
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2005-05-06 06:38:11 +00:00
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extern void s_ifb (int arg);
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2003-11-27 19:14:41 +00:00
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extern void s_ifc (int arg);
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extern void s_ifdef (int arg);
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extern void s_ifeqs (int arg);
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extern void s_ignore (int arg);
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extern void s_include (int arg);
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extern void s_irp (int arg);
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extern void s_lcomm (int needs_align);
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extern void s_lcomm_bytes (int needs_align);
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extern void s_leb128 (int sign);
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extern void s_linkonce (int);
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extern void s_lsym (int);
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extern void s_macro (int);
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extern void s_mexit (int);
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extern void s_mri (int);
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extern void s_mri_common (int);
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extern void s_org (int);
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extern void s_print (int);
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extern void s_purgem (int);
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extern void s_rept (int);
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extern void s_set (int);
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extern void s_space (int mult);
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extern void s_stab (int what);
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extern void s_struct (int);
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extern void s_text (int);
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extern void stringer (int append_zero);
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extern void s_xstab (int what);
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extern void s_rva (int);
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extern void s_incbin (int);
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bfd:
* elf-attrs.c: New.
* Makefile.am (BFD32_BACKENDS): Add elf-attrs.lo.
(BFD32_BACKENDS_CFILES): Add elf-attrs.c.
(elf-attrs.lo): Generate dependencies.
* Makefile.in: Regenerate.
* configure.in (elf): Add elf-attrs.lo.
* configure: Regenerate.
* elf-bfd.h (struct elf_backend_data): Add entries for object
attributes.
(NUM_KNOWN_OBJ_ATTRIBUTES, obj_attribute, obj_attribute_list,
OBJ_ATTR_PROC, OBJ_ATTR_GNU, OBJ_ATTR_FIRST, OBJ_ATTR_LAST,
Tag_NULL, Tag_File, Tag_Section, Tag_Symbol, Tag_compatibility):
New.
(struct elf_obj_tdata): Add entries for object attributes.
(elf_known_obj_attributes, elf_other_obj_attributes,
elf_known_obj_attributes_proc, elf_other_obj_attributes_proc):
New.
(bfd_elf_obj_attr_size, bfd_elf_set_obj_attr_contents,
bfd_elf_get_obj_attr_int, bfd_elf_add_obj_attr_int,
bfd_elf_add_proc_attr_int, bfd_elf_add_obj_attr_string,
bfd_elf_add_proc_attr_string, bfd_elf_add_obj_attr_compat,
bfd_elf_add_proc_attr_compat, _bfd_elf_attr_strdup,
_bfd_elf_copy_obj_attributes, _bfd_elf_obj_attrs_arg_type,
_bfd_elf_parse_attributes, _bfd_elf_merge_object_attributes): New.
* elf.c (_bfd_elf_copy_private_bfd_data): Copy object attributes.
(bfd_section_from_shdr): Handle attributes sections.
* elflink.c (bfd_elf_final_link): Handle attributes sections.
* elfxx-target.h (elf_backend_obj_attrs_vendor,
elf_backend_obj_attrs_section, elf_backend_obj_attrs_arg_type,
elf_backend_obj_attrs_section_type): New.
(elfNN_bed): Update.
* elf32-arm.c (NUM_KNOWN_ATTRIBUTES, aeabi_attribute,
aeabi_attribute_list): Remove.
(struct elf32_arm_obj_tdata): Remove object attributes fields.
(check_use_blx, bfd_elf32_arm_set_vfp11_fix, using_thumb2,
elf32_arm_copy_private_bfd_data, elf32_arm_merge_eabi_attributes):
Update for new object attributes interfaces.
(uleb128_size, is_default_attr, eabi_attr_size,
elf32_arm_eabi_attr_size, write_uleb128, write_eabi_attribute,
elf32_arm_set_eabi_attr_contents, elf32_arm_bfd_final_link,
elf32_arm_new_eabi_attr, elf32_arm_get_eabi_attr_int,
elf32_arm_add_eabi_attr_int, attr_strdup,
elf32_arm_add_eabi_attr_string, elf32_arm_add_eabi_attr_compat,
copy_eabi_attributes, elf32_arm_parse_attributes): Remove. Moved
to generic code in elf-attrs.c.
(elf32_arm_obj_attrs_arg_type): New.
(elf32_arm_fake_sections): Do not handle .ARM.attributes.
(elf32_arm_section_from_shdr): Do not handle SHT_ARM_ATTRIBUTES.
(bfd_elf32_bfd_final_link): Remove.
(elf_backend_obj_attrs_vendor, elf_backend_obj_attrs_section,
elf_backend_obj_attrs_arg_type,
elf_backend_obj_attrs_section_type): New.
* elf32-bfin.c (bfin_elf_copy_private_bfd_data): Copy object
attributes.
* elf32-frv.c (frv_elf_copy_private_bfd_data): Likewise.
* elf32-iq2000.c (iq2000_elf_copy_private_bfd_data): Likewise.
* elf32-mep.c (mep_elf_copy_private_bfd_data): Likewise.
* elf32-mt.c (mt_elf_copy_private_bfd_data): Likewise.
* elf32-sh.c (sh_elf_copy_private_data): Likewise.
* elf64-sh64.c (sh_elf64_copy_private_data_internal): Likewise.
binutils:
* readelf.c (display_gnu_attribute): New.
(process_arm_specific): Rearrange as process_attributes.
(process_arm_specific): Replace by wrapper of process_attributes.
gas:
* as.c (create_obj_attrs_section): New.
(main): Call create_obj_attrs_section for ELF.
* read.c (s_gnu_attribute, skip_whitespace, skip_past_char,
skip_past_comma, s_vendor_attribute): New.
(potable): Add gnu_attribute for ELF.
* read.h (s_vendor_attribute): Declare.
* config/tc-arm.c (s_arm_eabi_attribute): Replace by wrapper
round s_vendor_attribute.
(aeabi_set_public_attributes): Update for new attributes
interfaces.
(arm_md_end): Remove attributes contents setting now done
generically.
include/elf:
* arm.h (elf32_arm_add_eabi_attr_int,
elf32_arm_add_eabi_attr_string, elf32_arm_add_eabi_attr_compat,
elf32_arm_get_eabi_attr_int, elf32_arm_set_eabi_attr_contents,
elf32_arm_eabi_attr_size, Tag_NULL, Tag_File, Tag_Section,
Tag_Symbol, Tag_compatibility): Remove.
* common.h (SHT_GNU_ATTRIBUTES): Define.
ld:
* emulparams/armelf.sh (OTHER_SECTIONS): Remove .ARM.attributes.
(ATTRS_SECTIONS): Define.
* scripttempl/elf.sc, scripttempl/elf32sh-symbian.sc,
scripttempl/elf_chaos.sc, scripttempl/elfi370.sc,
scripttempl/elfxtensa.sc: Handle ATTRS_SECTIONS.
2007-06-29 16:29:17 +00:00
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extern void s_vendor_attribute (int);
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gas/ChangeLog:
* read.c (potable): Add weakref.
(s_weakref): New.
* read.h (s_weakref): Declare.
* struc-symbol.h (struct symbol): Add sy_weakrefr and sy_weakrefd.
* symbols.c (colon): Clear weakrefr.
(symbol_find_exact): Rename to, and reimplement in terms of...
(symbol_find_exact_noref): ... new function.
(symbol_find): Likewise...
(symbol_find_noref): ... ditto.
(resolve_symbol_value): Resolve weakrefr without setting their
values.
(S_SET_WEAK): Call hook.
(S_GET_VALUE): Follow weakref link.
(S_SET_VALUE): Clear weakrefr.
(S_IS_WEAK): Follow weakref link.
(S_IS_WEAKREFR, S_SET_WEAKREFR, S_CLEAR_WEAKREFR): New.
(S_IS_WEAKREFD, S_SET_WEAKREFD, S_CLEAR_WEAKREFD): New.
(symbol_set_value_expression, symbol_set_frag): Clear weakrefr.
(symbol_mark_used): Follow weakref link.
(print_symbol_value_1): Print weak, weakrefr and weakrefd.
* symbols.h (symbol_find_noref, symbol_find_exact_noref): Declare.
(S_IS_WEAKREFR, S_SET_WEAKREFR, S_CLEAR_WEAKREFR): Declare.
(S_IS_WEAKREFD, S_SET_WEAKREFD, S_CLEAR_WEAKREFD): Declare.
* write.c (adust_reloc_syms): Follow weakref link. Do not
complain if target is undefined.
(write_object_file): Likewise. Remove weakrefr symbols. Drop
unreferenced weakrefd symbols.
* config/obj-coff.c (obj_frob_symbol): Do not force WEAKREFD
symbols EXTERNAL.
(pecoff_obj_set_weak_hook, pecoff_obj_clear_weak_hook): New.
* config/obj-coff.h (obj_set_weak_hook, obj_clear_weak_hook): Define.
* doc/as.texinfo: Document weakref.
* doc/internals.texi: Document new struct members, internal
functions and hooks.
gas/testsuite/ChangeLog:
* gas/all/weakref1.s, gas/all/weakref1.d: New test.
* gas/all/weakref1g.d, gas/all/weakref1l.d: New tests.
* gas/all/weakref1u.d, gas/all/weakref1w.d: New tests.
* gas/all/weakref2.s, gas/all/weakref3.s: New tests.
* gas/all/gas.exp: Run new tests.
2005-10-24 17:51:42 +00:00
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extern void s_weakref (int);
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