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Fix PR gdb/21954: make 'unset environment' work again
[deliverable/binutils-gdb.git] / gas / read.h
CommitLineData
252b5132 1/* read.h - of read.c
2571583a 2 Copyright (C) 1986-2017 Free Software Foundation, Inc.
252b5132
RH		 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
ec2655a6 8 the Free Software Foundation; either version 3, or (at your option)
252b5132
RH		 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
ee515fb7 17 along with GAS; see the file COPYING. If not, write to the Free
4b4da160
NC		 18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
252b5132 20
ee515fb7 21extern char *input_line_pointer; /* -> char we are parsing now. */
252b5132 22
ee515fb7
KH		 23/* Define to make whitespace be allowed in many syntactically
24 unnecessary places. Normally undefined. For compatibility with
25 ancient GNU cc. */
252b5132 26/* #undef PERMIT_WHITESPACE */
ee515fb7 27#define PERMIT_WHITESPACE
252b5132
RH		 28
29#ifdef PERMIT_WHITESPACE
ee515fb7 30#define SKIP_WHITESPACE() \
e4475e39 31 ((*input_line_pointer == ' ') ? ++input_line_pointer : 0)
14c1428b
NC		 32#define SKIP_ALL_WHITESPACE() \
33 while (*input_line_pointer == ' ') ++input_line_pointer
252b5132 34#else
14c1428b
NC		 35#define SKIP_WHITESPACE() know (*input_line_pointer != ' ' )
36#define SKIP_ALL_WHITESPACE() SKIP_WHITESPACE()
252b5132
RH		 37#endif
38
d02603dc
NC		 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
252b5132
RH		 49#define LEX_NAME (1) /* may continue a name */
50#define LEX_BEGIN_NAME (2) /* may begin a name */
58b5739a 51#define LEX_END_NAME (4) /* ends a name */
252b5132
RH		 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 )
58b5739a
RH		 57#define is_name_ender(c) \
58 ( lex_type[(unsigned char) (c)] & LEX_END_NAME )
252b5132
RH		 59
60#ifndef is_a_char
61#define CHAR_MASK (0xff)
62#define NOT_A_CHAR (CHAR_MASK+1)
ee515fb7 63#define is_a_char(c) (((unsigned) (c)) <= CHAR_MASK)
252b5132
RH		 64#endif /* is_a_char() */
65
66extern char lex_type[];
67extern char is_end_of_line[];
68
39e6acbd 69extern int is_it_end_of_statement (void);
40a4d956 70extern char *find_end_of_line (char *, int);
252b5132
RH		 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. */
e0471c16 80extern const char **include_dirs;
252b5132
RH		 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
bccba5f0 93/* True if a stabs line debug statement is currently being emitted. */
92eb7b32 94extern int outputting_stabs_line_debug;
bccba5f0 95
252b5132 96/* Possible arguments to .linkonce. */
ee515fb7 97enum linkonce_type {
252b5132
RH		 98 LINKONCE_UNSET = 0,
99 LINKONCE_DISCARD,
100 LINKONCE_ONE_ONLY,
101 LINKONCE_SAME_SIZE,
102 LINKONCE_SAME_CONTENTS
103};
104
a8a3b3b2 105#ifndef TC_CASE_SENSITIVE
37d8bb27
NC		 106extern char original_case_string[];
107#endif
108
62ebcb5c
AM		 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
39e6acbd 114extern void pop_insert (const pseudo_typeS *);
252b5132 115extern unsigned int get_stab_string_offset
39e6acbd
KH		 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);
39e6acbd
KH		 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);
62ebcb5c
AM		 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);
9136aa49
DG		 134extern void equals (char *, int);
135extern void float_cons (int);
39e6acbd 136extern void ignore_rest_of_line (void);
40a4d956 137#define discard_rest_of_line ignore_rest_of_line
9136aa49 138extern unsigned output_leb128 (char *, valueT, int);
39e6acbd 139extern void pseudo_set (symbolS * symbolP);
e0471c16 140extern void read_a_source_file (const char *name);
39e6acbd
KH		 141extern void read_begin (void);
142extern void read_print_statistics (FILE *);
69602580 143extern char *read_symbol_name (void);
9136aa49 144extern unsigned sizeof_leb128 (valueT, int);
39e6acbd
KH		 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 *);
c7927a3c 150extern void do_repeat_with_expander (int, const char *, const char *, const char *);
39e6acbd
KH		 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);
f86f5863
TS		 159extern void do_align (unsigned int align, char *fill, unsigned int length,
160 unsigned int max);
9136aa49 161extern void bss_alloc (symbolS *, addressT, unsigned);
e13bab5a
AM		 162extern offsetT parse_align (int);
163extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
13c56984 164extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
c04f5787 165extern void s_app_file_string (char *, int);
39e6acbd
KH		 166extern void s_app_file (int);
167extern void s_app_line (int);
fa94de6b
RM		 168extern void s_bundle_align_mode (int);
169extern void s_bundle_lock (int);
170extern void s_bundle_unlock (int);
39e6acbd
KH		 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);
d190d046 179extern void s_errwarn (int);
39e6acbd
KH		 180extern void s_fail (int);
181extern void s_fill (int);
182extern void s_float_space (int mult);
183extern void s_func (int);
39e6acbd
KH		 184extern void s_globl (int arg);
185extern void s_if (int arg);
26aca5f6 186extern void s_ifb (int arg);
39e6acbd
KH		 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);
06e77878 215extern void s_weakref (int);
1181551e
NC		 216extern void temp_ilp (char *);
217extern void restore_ilp (void);
GDB Binutils - Deliverables
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