1/* read.h - of read.c
2   Copyright (C) 1986-2017 Free Software Foundation, Inc.
3
4   This file is part of GAS, the GNU Assembler.
5
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)
9   any later version.
10
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.
15
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
19   02110-1301, USA.  */
20
21extern char *input_line_pointer;	/* -> char we are parsing now.  */
22
23/* Define to make whitespace be allowed in many syntactically
24   unnecessary places.  Normally undefined.  For compatibility with
25   ancient GNU cc.  */
26/* #undef PERMIT_WHITESPACE */
27#define PERMIT_WHITESPACE
28
29#ifdef PERMIT_WHITESPACE
30#define SKIP_WHITESPACE()			\
31  ((*input_line_pointer == ' ') ? ++input_line_pointer : 0)
32#define SKIP_ALL_WHITESPACE()			\
33  while (*input_line_pointer == ' ') ++input_line_pointer
34#else
35#define SKIP_WHITESPACE() know (*input_line_pointer != ' ' )
36#define SKIP_ALL_WHITESPACE() SKIP_WHITESPACE()
37#endif
38
39#define SKIP_WHITESPACE_AFTER_NAME()		\
40  do						\
41    {						\
42      if (* input_line_pointer == '"')		\
43	++ input_line_pointer;			\
44      if (* input_line_pointer == ' ')		\
45	++ input_line_pointer;			\
46    }						\
47  while (0)
48
49#define	LEX_NAME	(1)	/* may continue a name */
50#define LEX_BEGIN_NAME	(2)	/* may begin a name */
51#define LEX_END_NAME	(4)	/* ends a name */
52
53#define is_name_beginner(c) \
54  ( lex_type[(unsigned char) (c)] & LEX_BEGIN_NAME )
55#define is_part_of_name(c) \
56  ( lex_type[(unsigned char) (c)] & LEX_NAME       )
57#define is_name_ender(c) \
58  ( lex_type[(unsigned char) (c)] & LEX_END_NAME   )
59
60#ifndef is_a_char
61#define CHAR_MASK	(0xff)
62#define NOT_A_CHAR	(CHAR_MASK+1)
63#define is_a_char(c)	(((unsigned) (c)) <= CHAR_MASK)
64#endif /* is_a_char() */
65
66extern char lex_type[];
67extern char is_end_of_line[];
68
69extern int is_it_end_of_statement (void);
70extern char *find_end_of_line (char *, int);
71
72extern int target_big_endian;
73
74/* These are initialized by the CPU specific target files (tc-*.c).  */
75extern const char comment_chars[];
76extern const char line_comment_chars[];
77extern const char line_separator_chars[];
78
79/* Table of -I directories.  */
80extern const char **include_dirs;
81extern int include_dir_count;
82extern int include_dir_maxlen;
83
84/* The offset in the absolute section.  */
85extern addressT abs_section_offset;
86
87/* The label on a line, used by some of the pseudo-ops.  */
88extern symbolS *line_label;
89
90/* This is used to support MRI common sections.  */
91extern symbolS *mri_common_symbol;
92
93/* True if a stabs line debug statement is currently being emitted.  */
94extern int outputting_stabs_line_debug;
95
96/* Possible arguments to .linkonce.  */
97enum linkonce_type {
98  LINKONCE_UNSET = 0,
99  LINKONCE_DISCARD,
100  LINKONCE_ONE_ONLY,
101  LINKONCE_SAME_SIZE,
102  LINKONCE_SAME_CONTENTS
103};
104
105#ifndef TC_CASE_SENSITIVE
106extern char original_case_string[];
107#endif
108
109#ifndef TC_PARSE_CONS_RETURN_TYPE
110#define TC_PARSE_CONS_RETURN_TYPE bfd_reloc_code_real_type
111#define TC_PARSE_CONS_RETURN_NONE BFD_RELOC_NONE
112#endif
113
114extern void pop_insert (const pseudo_typeS *);
115extern unsigned int get_stab_string_offset
116  (const char *string, const char *stabstr_secname);
117extern void aout_process_stab (int, const char *, int, int, int);
118extern char *demand_copy_string (int *lenP);
119extern char *demand_copy_C_string (int *len_pointer);
120extern char get_absolute_expression_and_terminator (long *val_pointer);
121extern offsetT get_absolute_expression (void);
122extern unsigned int next_char_of_string (void);
123extern void s_mri_sect (char *);
124extern char *mri_comment_field (char *);
125extern void mri_comment_end (char *, int);
126extern void add_include_dir (char *path);
127extern void cons (int nbytes);
128extern void demand_empty_rest_of_line (void);
129extern void emit_expr (expressionS *exp, unsigned int nbytes);
130extern void emit_expr_with_reloc (expressionS *exp, unsigned int nbytes,
131				  TC_PARSE_CONS_RETURN_TYPE);
132extern void emit_expr_fix (expressionS *, unsigned int, fragS *, char *,
133			   TC_PARSE_CONS_RETURN_TYPE);
134extern void equals (char *, int);
135extern void float_cons (int);
136extern void ignore_rest_of_line (void);
137#define discard_rest_of_line ignore_rest_of_line
138extern unsigned output_leb128 (char *, valueT, int);
139extern void pseudo_set (symbolS * symbolP);
140extern void read_a_source_file (const char *name);
141extern void read_begin (void);
142extern void read_print_statistics (FILE *);
143extern char *read_symbol_name (void);
144extern unsigned sizeof_leb128 (valueT, int);
145extern void stabs_generate_asm_file (void);
146extern void stabs_generate_asm_lineno (void);
147extern void stabs_generate_asm_func (const char *, const char *);
148extern void stabs_generate_asm_endfunc (const char *, const char *);
149extern void do_repeat (int,const char *,const char *);
150extern void do_repeat_with_expander (int, const char *, const char *, const char *);
151extern void end_repeat (int);
152extern void do_parse_cons_expression (expressionS *, int);
153
154extern void generate_lineno_debug (void);
155
156extern void s_abort (int) ATTRIBUTE_NORETURN;
157extern void s_align_bytes (int arg);
158extern void s_align_ptwo (int);
159extern void do_align (unsigned int align, char *fill, unsigned int length,
160		      unsigned int max);
161extern void bss_alloc (symbolS *, addressT, unsigned);
162extern offsetT parse_align (int);
163extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
164extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
165extern void s_app_file_string (char *, int);
166extern void s_app_file (int);
167extern void s_app_line (int);
168extern void s_bundle_align_mode (int);
169extern void s_bundle_lock (int);
170extern void s_bundle_unlock (int);
171extern void s_comm (int);
172extern void s_data (int);
173extern void s_desc (int);
174extern void s_else (int arg);
175extern void s_elseif (int arg);
176extern void s_end (int arg);
177extern void s_endif (int arg);
178extern void s_err (int);
179extern void s_errwarn (int);
180extern void s_fail (int);
181extern void s_fill (int);
182extern void s_float_space (int mult);
183extern void s_func (int);
184extern void s_globl (int arg);
185extern void s_if (int arg);
186extern void s_ifb (int arg);
187extern void s_ifc (int arg);
188extern void s_ifdef (int arg);
189extern void s_ifeqs (int arg);
190extern void s_ignore (int arg);
191extern void s_include (int arg);
192extern void s_irp (int arg);
193extern void s_lcomm (int needs_align);
194extern void s_lcomm_bytes (int needs_align);
195extern void s_leb128 (int sign);
196extern void s_linkonce (int);
197extern void s_lsym (int);
198extern void s_macro (int);
199extern void s_mexit (int);
200extern void s_mri (int);
201extern void s_mri_common (int);
202extern void s_org (int);
203extern void s_print (int);
204extern void s_purgem (int);
205extern void s_rept (int);
206extern void s_set (int);
207extern void s_space (int mult);
208extern void s_stab (int what);
209extern void s_struct (int);
210extern void s_text (int);
211extern void stringer (int append_zero);
212extern void s_xstab (int what);
213extern void s_rva (int);
214extern void s_incbin (int);
215extern void s_weakref (int);
216