1/* read.h - of read.c
2   Copyright 1986, 1990, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3   2000, 2001, 2002, 2003, 2004, 2005
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, 51 Franklin Street - Fifth Floor, Boston, MA
21   02110-1301, 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  do { if (*input_line_pointer == ' ') ++input_line_pointer; } while (0)
34#else
35#define SKIP_WHITESPACE() know(*input_line_pointer != ' ' )
36#endif
37
38#define	LEX_NAME	(1)	/* may continue a name */
39#define LEX_BEGIN_NAME	(2)	/* may begin a name */
40#define LEX_END_NAME	(4)	/* ends a name */
41
42#define is_name_beginner(c) \
43  ( lex_type[(unsigned char) (c)] & LEX_BEGIN_NAME )
44#define is_part_of_name(c) \
45  ( lex_type[(unsigned char) (c)] & LEX_NAME       )
46#define is_name_ender(c) \
47  ( lex_type[(unsigned char) (c)] & LEX_END_NAME   )
48
49#ifndef is_a_char
50#define CHAR_MASK	(0xff)
51#define NOT_A_CHAR	(CHAR_MASK+1)
52#define is_a_char(c)	(((unsigned) (c)) <= CHAR_MASK)
53#endif /* is_a_char() */
54
55extern char lex_type[];
56extern char is_end_of_line[];
57
58extern int is_it_end_of_statement (void);
59extern char *find_end_of_line (char *, int);
60
61extern int target_big_endian;
62
63/* These are initialized by the CPU specific target files (tc-*.c).  */
64extern const char comment_chars[];
65extern const char line_comment_chars[];
66extern const char line_separator_chars[];
67
68/* Table of -I directories.  */
69extern char **include_dirs;
70extern int include_dir_count;
71extern int include_dir_maxlen;
72
73/* The offset in the absolute section.  */
74extern addressT abs_section_offset;
75
76/* The label on a line, used by some of the pseudo-ops.  */
77extern symbolS *line_label;
78
79/* This is used to support MRI common sections.  */
80extern symbolS *mri_common_symbol;
81
82/* True if a stabs line debug statement is currently being emitted.  */
83extern int outputting_stabs_line_debug;
84
85/* Possible arguments to .linkonce.  */
86enum linkonce_type {
87  LINKONCE_UNSET = 0,
88  LINKONCE_DISCARD,
89  LINKONCE_ONE_ONLY,
90  LINKONCE_SAME_SIZE,
91  LINKONCE_SAME_CONTENTS
92};
93
94#ifndef TC_CASE_SENSITIVE
95extern char original_case_string[];
96#endif
97
98extern void pop_insert (const pseudo_typeS *);
99extern unsigned int get_stab_string_offset
100  (const char *string, const char *stabstr_secname);
101extern void aout_process_stab (int, const char *, int, int, int);
102extern char *demand_copy_string (int *lenP);
103extern char *demand_copy_C_string (int *len_pointer);
104extern char get_absolute_expression_and_terminator (long *val_pointer);
105extern offsetT get_absolute_expression (void);
106extern unsigned int next_char_of_string (void);
107extern void s_mri_sect (char *);
108extern char *mri_comment_field (char *);
109extern void mri_comment_end (char *, int);
110extern void add_include_dir (char *path);
111extern void cons (int nbytes);
112extern void demand_empty_rest_of_line (void);
113extern void emit_expr (expressionS *exp, unsigned int nbytes);
114extern void equals (char *sym_name, int reassign);
115extern void float_cons (int float_type);
116extern void ignore_rest_of_line (void);
117#define discard_rest_of_line ignore_rest_of_line
118extern int output_leb128 (char *, valueT, int sign);
119extern void pseudo_set (symbolS * symbolP);
120extern void read_a_source_file (char *name);
121extern void read_begin (void);
122extern void read_print_statistics (FILE *);
123extern int sizeof_leb128 (valueT, int sign);
124extern void stabs_generate_asm_file (void);
125extern void stabs_generate_asm_lineno (void);
126extern void stabs_generate_asm_func (const char *, const char *);
127extern void stabs_generate_asm_endfunc (const char *, const char *);
128extern void do_repeat (int,const char *,const char *);
129extern void end_repeat (int);
130extern void do_parse_cons_expression (expressionS *, int);
131
132extern void generate_lineno_debug (void);
133
134extern void s_abort (int) ATTRIBUTE_NORETURN;
135extern void s_align_bytes (int arg);
136extern void s_align_ptwo (int);
137extern void bss_alloc (symbolS *, addressT, int);
138extern offsetT parse_align (int);
139extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
140extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
141extern void s_app_file_string (char *, int);
142extern void s_app_file (int);
143extern void s_app_line (int);
144extern void s_comm (int);
145extern void s_data (int);
146extern void s_desc (int);
147extern void s_else (int arg);
148extern void s_elseif (int arg);
149extern void s_end (int arg);
150extern void s_endif (int arg);
151extern void s_err (int);
152extern void s_errwarn (int);
153extern void s_fail (int);
154extern void s_fill (int);
155extern void s_float_space (int mult);
156extern void s_func (int);
157extern void s_globl (int arg);
158extern void s_if (int arg);
159extern void s_ifb (int arg);
160extern void s_ifc (int arg);
161extern void s_ifdef (int arg);
162extern void s_ifeqs (int arg);
163extern void s_ignore (int arg);
164extern void s_include (int arg);
165extern void s_irp (int arg);
166extern void s_lcomm (int needs_align);
167extern void s_lcomm_bytes (int needs_align);
168extern void s_leb128 (int sign);
169extern void s_linkonce (int);
170extern void s_lsym (int);
171extern void s_macro (int);
172extern void s_mexit (int);
173extern void s_mri (int);
174extern void s_mri_common (int);
175extern void s_org (int);
176extern void s_print (int);
177extern void s_purgem (int);
178extern void s_rept (int);
179extern void s_set (int);
180extern void s_space (int mult);
181extern void s_stab (int what);
182extern void s_struct (int);
183extern void s_text (int);
184extern void stringer (int append_zero);
185extern void s_xstab (int what);
186extern void s_rva (int);
187extern void s_incbin (int);
188extern void s_vendor_attribute (int);
189extern void s_weakref (int);
190