read.h revision 89857 
1/* read.h - of read.c
2   Copyright 1986, 1990, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3   2000
4   Free Software Foundation, Inc.
5
6   This file is part of GAS, the GNU Assembler.
7
8   GAS is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 2, or (at your option)
11   any later version.
12
13   GAS is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with GAS; see the file COPYING.  If not, write to the Free
20   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21   02111-1307, USA.  */
22
23extern char *input_line_pointer;	/* -> char we are parsing now.  */
24
25/* Define to make whitespace be allowed in many syntactically
26   unnecessary places.  Normally undefined.  For compatibility with
27   ancient GNU cc.  */
28/* #undef PERMIT_WHITESPACE */
29#define PERMIT_WHITESPACE
30
31#ifdef PERMIT_WHITESPACE
32#define SKIP_WHITESPACE()			\
33  {						\
34    if (* input_line_pointer == ' ')		\
35      ++ input_line_pointer;			\
36  }
37#else
38#define SKIP_WHITESPACE() know(*input_line_pointer != ' ' )
39#endif
40
41#define	LEX_NAME	(1)	/* may continue a name */
42#define LEX_BEGIN_NAME	(2)	/* may begin a name */
43#define LEX_END_NAME	(4)	/* ends a name */
44
45#define is_name_beginner(c) \
46  ( lex_type[(unsigned char) (c)] & LEX_BEGIN_NAME )
47#define is_part_of_name(c) \
48  ( lex_type[(unsigned char) (c)] & LEX_NAME       )
49#define is_name_ender(c) \
50  ( lex_type[(unsigned char) (c)] & LEX_END_NAME   )
51
52#ifndef is_a_char
53#define CHAR_MASK	(0xff)
54#define NOT_A_CHAR	(CHAR_MASK+1)
55#define is_a_char(c)	(((unsigned) (c)) <= CHAR_MASK)
56#endif /* is_a_char() */
57
58extern char lex_type[];
59extern char is_end_of_line[];
60
61extern int is_it_end_of_statement PARAMS ((void));
62
63extern int target_big_endian;
64
65/* These are initialized by the CPU specific target files (tc-*.c).  */
66extern const char comment_chars[];
67extern const char line_comment_chars[];
68extern const char line_separator_chars[];
69
70/* Table of -I directories.  */
71extern char **include_dirs;
72extern int include_dir_count;
73extern int include_dir_maxlen;
74
75/* The offset in the absolute section.  */
76extern addressT abs_section_offset;
77
78/* The label on a line, used by some of the pseudo-ops.  */
79extern symbolS *line_label;
80
81/* This is used to support MRI common sections.  */
82extern symbolS *mri_common_symbol;
83
84/* True if a stabs line debug statement is currently being emitted.  */
85extern int outputting_stabs_line_debug;
86
87/* Possible arguments to .linkonce.  */
88enum linkonce_type {
89  LINKONCE_UNSET = 0,
90  LINKONCE_DISCARD,
91  LINKONCE_ONE_ONLY,
92  LINKONCE_SAME_SIZE,
93  LINKONCE_SAME_CONTENTS
94};
95
96#define IGNORE_OPCODE_CASE
97#ifdef  IGNORE_OPCODE_CASE
98extern char original_case_string[];
99#endif
100
101extern void pop_insert PARAMS ((const pseudo_typeS *));
102extern unsigned int get_stab_string_offset
103  PARAMS ((const char *string, const char *stabstr_secname));
104extern void aout_process_stab PARAMS ((int, const char *, int, int, int));
105extern char *demand_copy_C_string PARAMS ((int *len_pointer));
106extern char get_absolute_expression_and_terminator
107  PARAMS ((long *val_pointer));
108extern offsetT get_absolute_expression PARAMS ((void));
109extern unsigned int next_char_of_string PARAMS ((void));
110extern void s_mri_sect PARAMS ((char *));
111extern char *mri_comment_field PARAMS ((char *));
112extern void mri_comment_end PARAMS ((char *, int));
113extern void add_include_dir PARAMS ((char *path));
114extern void cons PARAMS ((int nbytes));
115extern void demand_empty_rest_of_line PARAMS ((void));
116extern void emit_expr PARAMS ((expressionS *exp, unsigned int nbytes));
117extern void emit_leb128_expr PARAMS ((expressionS *, int));
118extern void equals PARAMS ((char *sym_name, int reassign));
119extern void float_cons PARAMS ((int float_type));
120extern void ignore_rest_of_line PARAMS ((void));
121extern void discard_rest_of_line PARAMS ((void));
122extern int output_leb128 PARAMS ((char *, valueT, int sign));
123extern void pseudo_set PARAMS ((symbolS * symbolP));
124extern void read_a_source_file PARAMS ((char *name));
125extern void read_begin PARAMS ((void));
126extern void read_print_statistics PARAMS ((FILE *));
127extern int sizeof_leb128 PARAMS ((valueT, int sign));
128extern void stabs_generate_asm_file PARAMS ((void));
129extern void stabs_generate_asm_lineno PARAMS ((void));
130extern void stabs_generate_asm_func PARAMS ((const char *, const char *));
131extern void stabs_generate_asm_endfunc PARAMS ((const char *, const char *));
132extern void do_repeat PARAMS((int,const char *,const char *));
133extern void end_repeat PARAMS((int));
134
135extern void generate_lineno_debug PARAMS ((void));
136
137extern void s_abort PARAMS ((int)) ATTRIBUTE_NORETURN;
138extern void s_align_bytes PARAMS ((int arg));
139extern void s_align_ptwo PARAMS ((int));
140extern void s_app_file PARAMS ((int));
141extern void s_app_line PARAMS ((int));
142extern void s_bad_endr PARAMS ((int));
143extern void s_comm PARAMS ((int));
144extern void s_data PARAMS ((int));
145extern void s_desc PARAMS ((int));
146extern void s_else PARAMS ((int arg));
147extern void s_elseif PARAMS ((int arg));
148extern void s_end PARAMS ((int arg));
149extern void s_endif PARAMS ((int arg));
150extern void s_err PARAMS ((int));
151extern void s_fail PARAMS ((int));
152extern void s_fill PARAMS ((int));
153extern void s_float_space PARAMS ((int mult));
154extern void s_func PARAMS ((int));
155extern void do_s_func PARAMS ((int, const char *));
156extern void s_globl PARAMS ((int arg));
157extern void s_if PARAMS ((int arg));
158extern void s_ifc PARAMS ((int arg));
159extern void s_ifdef PARAMS ((int arg));
160extern void s_ifeqs PARAMS ((int arg));
161extern void s_ignore PARAMS ((int arg));
162extern void s_include PARAMS ((int arg));
163extern void s_irp PARAMS ((int arg));
164extern void s_lcomm PARAMS ((int needs_align));
165extern void s_lcomm_bytes PARAMS ((int needs_align));
166extern void s_leb128 PARAMS ((int sign));
167extern void s_linkonce PARAMS ((int));
168extern void s_lsym PARAMS ((int));
169extern void s_macro PARAMS ((int));
170extern void s_mexit PARAMS ((int));
171extern void s_mri PARAMS ((int));
172extern void s_mri_common PARAMS ((int));
173extern void s_org PARAMS ((int));
174extern void s_print PARAMS ((int));
175extern void s_purgem PARAMS ((int));
176extern void s_rept PARAMS ((int));
177extern void s_set PARAMS ((int));
178extern void s_space PARAMS ((int mult));
179extern void s_stab PARAMS ((int what));
180extern void s_struct PARAMS ((int));
181extern void s_text PARAMS ((int));
182extern void stringer PARAMS ((int append_zero));
183extern void s_xstab PARAMS ((int what));
184extern void s_rva PARAMS ((int));
185extern void s_incbin PARAMS ((int));
186