1/* read.h - of read.c
2   Copyright (C) 1986-2022 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.  */
22extern bool input_from_string;
23
24/* Define to make whitespace be allowed in many syntactically
25   unnecessary places.  Normally undefined.  For compatibility with
26   ancient GNU cc.  */
27/* #undef PERMIT_WHITESPACE */
28#define PERMIT_WHITESPACE
29
30#ifdef PERMIT_WHITESPACE
31#define SKIP_WHITESPACE()			\
32  ((*input_line_pointer == ' ') ? ++input_line_pointer : 0)
33#define SKIP_ALL_WHITESPACE()			\
34  while (*input_line_pointer == ' ') ++input_line_pointer
35#else
36#define SKIP_WHITESPACE() know (*input_line_pointer != ' ' )
37#define SKIP_ALL_WHITESPACE() SKIP_WHITESPACE()
38#endif
39
40#define SKIP_WHITESPACE_AFTER_NAME()		\
41  do						\
42    {						\
43      if (* input_line_pointer == '"')		\
44	++ input_line_pointer;			\
45      if (* input_line_pointer == ' ')		\
46	++ input_line_pointer;			\
47    }						\
48  while (0)
49
50#define	LEX_NAME	(1)	/* may continue a name */
51#define LEX_BEGIN_NAME	(2)	/* may begin a name */
52#define LEX_END_NAME	(4)	/* ends a name */
53
54#define is_name_beginner(c) \
55  ( lex_type[(unsigned char) (c)] & LEX_BEGIN_NAME )
56#define is_part_of_name(c) \
57  ( lex_type[(unsigned char) (c)] & LEX_NAME       )
58#define is_name_ender(c) \
59  ( lex_type[(unsigned char) (c)] & LEX_END_NAME   )
60
61#ifndef is_a_char
62#define CHAR_MASK	(0xff)
63#define NOT_A_CHAR	(CHAR_MASK+1)
64#define is_a_char(c)	(((unsigned) (c)) <= CHAR_MASK)
65#endif /* is_a_char() */
66
67extern char lex_type[];
68extern char is_end_of_line[];
69
70extern int is_it_end_of_statement (void);
71extern char *find_end_of_line (char *, int);
72
73extern int target_big_endian;
74
75/* These are initialized by the CPU specific target files (tc-*.c).  */
76extern const char comment_chars[];
77extern const char line_comment_chars[];
78extern const char line_separator_chars[];
79
80/* Table of -I directories.  */
81extern const char **include_dirs;
82extern int include_dir_count;
83extern int include_dir_maxlen;
84
85/* The offset in the absolute section.  */
86extern addressT abs_section_offset;
87
88/* The label on a line, used by some of the pseudo-ops.  */
89extern symbolS *line_label;
90
91/* This is used to support MRI common sections.  */
92extern symbolS *mri_common_symbol;
93
94/* True if a stabs line debug statement is currently being emitted.  */
95extern int outputting_stabs_line_debug;
96
97/* Possible arguments to .linkonce.  */
98enum linkonce_type {
99  LINKONCE_UNSET = 0,
100  LINKONCE_DISCARD,
101  LINKONCE_ONE_ONLY,
102  LINKONCE_SAME_SIZE,
103  LINKONCE_SAME_CONTENTS
104};
105
106#ifndef TC_CASE_SENSITIVE
107extern char original_case_string[];
108#endif
109
110#ifndef TC_PARSE_CONS_RETURN_TYPE
111#define TC_PARSE_CONS_RETURN_TYPE bfd_reloc_code_real_type
112#define TC_PARSE_CONS_RETURN_NONE BFD_RELOC_NONE
113#endif
114
115extern void pop_insert (const pseudo_typeS *);
116extern unsigned int get_stab_string_offset
117  (const char *, const char *, bool);
118extern void aout_process_stab (int, const char *, int, int, int);
119extern char *demand_copy_string (int *lenP);
120extern char *demand_copy_C_string (int *len_pointer);
121extern char get_absolute_expression_and_terminator (long *val_pointer);
122extern offsetT get_absolute_expression (void);
123extern unsigned int next_char_of_string (void);
124extern void s_mri_sect (char *);
125extern char *mri_comment_field (char *);
126extern void mri_comment_end (char *, int);
127extern void add_include_dir (char *path);
128extern void cons (int nbytes);
129extern void demand_empty_rest_of_line (void);
130extern void emit_expr (expressionS *exp, unsigned int nbytes);
131extern void emit_expr_with_reloc (expressionS *exp, unsigned int nbytes,
132				  TC_PARSE_CONS_RETURN_TYPE);
133extern void emit_expr_fix (expressionS *, unsigned int, fragS *, char *,
134			   TC_PARSE_CONS_RETURN_TYPE);
135extern void emit_leb128_expr (expressionS *, int);
136extern void equals (char *, int);
137extern void float_cons (int);
138extern void ignore_rest_of_line (void);
139#define discard_rest_of_line ignore_rest_of_line
140extern unsigned output_leb128 (char *, valueT, int);
141extern void pseudo_set (symbolS * symbolP);
142extern void read_a_source_file (const char *name);
143extern void read_begin (void);
144extern void read_print_statistics (FILE *);
145extern char *read_symbol_name (void);
146extern unsigned sizeof_leb128 (valueT, int);
147extern void stabs_generate_asm_file (void);
148extern void stabs_generate_asm_lineno (void);
149extern void stabs_generate_asm_func (const char *, const char *);
150extern void stabs_generate_asm_endfunc (const char *, const char *);
151extern void do_repeat (size_t, const char *, const char *, const char *);
152extern void end_repeat (int);
153extern void do_parse_cons_expression (expressionS *, int);
154
155extern void generate_lineno_debug (void);
156
157extern void s_abort (int) ATTRIBUTE_NORETURN;
158extern void s_align_bytes (int arg);
159extern void s_align_ptwo (int);
160extern void do_align (unsigned int align, char *fill, unsigned int length,
161		      unsigned int max);
162extern void bss_alloc (symbolS *, addressT, unsigned);
163extern offsetT parse_align (int);
164extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
165extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
166extern void s_file_string (char *);
167extern void s_file (int);
168extern void s_linefile (int);
169extern void s_bundle_align_mode (int);
170extern void s_bundle_lock (int);
171extern void s_bundle_unlock (int);
172extern void s_comm (int);
173extern void s_data (int);
174extern void s_desc (int);
175extern void s_else (int arg);
176extern void s_elseif (int arg);
177extern void s_end (int arg);
178extern void s_endif (int arg);
179extern void s_err (int);
180extern void s_errwarn (int);
181extern void s_fail (int);
182extern void s_fill (int);
183extern void s_float_space (int mult);
184extern void s_func (int);
185extern void s_globl (int arg);
186extern void s_if (int arg);
187extern void s_ifb (int arg);
188extern void s_ifc (int arg);
189extern void s_ifdef (int arg);
190extern void s_ifeqs (int arg);
191extern void s_ignore (int arg);
192extern void s_include (int arg);
193extern void s_irp (int arg);
194extern void s_lcomm (int needs_align);
195extern void s_lcomm_bytes (int needs_align);
196extern void s_leb128 (int sign);
197extern void s_linkonce (int);
198extern void s_lsym (int);
199extern void s_macro (int);
200extern void s_mexit (int);
201extern void s_mri (int);
202extern void s_mri_common (int);
203extern void s_org (int);
204extern void s_print (int);
205extern void s_purgem (int);
206extern void s_rept (int);
207extern void s_set (int);
208extern void s_space (int mult);
209extern void s_nop (int);
210extern void s_nops (int);
211extern void s_stab (int what);
212extern void s_struct (int);
213extern void s_text (int);
214extern void stringer (int append_zero);
215extern void s_xstab (int what);
216extern void s_rva (int);
217extern void s_incbin (int);
218extern void s_weakref (int);
219extern void temp_ilp (char *);
220extern void restore_ilp (void);
221