gas/read.h

   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
  21 extern char *input_line_pointer;        /* -> char we are parsing now.  */
  22 extern bfd_boolean 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
  67 extern char lex_type[];
  68 extern char is_end_of_line[];
  69
  70 extern int is_it_end_of_statement (void);
  71 extern char *find_end_of_line (char *, int);
  72
  73 extern int target_big_endian;
  74
  75 /* These are initialized by the CPU specific target files (tc-*.c).  */
  76 extern const char comment_chars[];
  77 extern const char line_comment_chars[];
  78 extern const char line_separator_chars[];
  79
  80 /* Table of -I directories.  */
  81 extern const char **include_dirs;
  82 extern int include_dir_count;
  83 extern int include_dir_maxlen;
  84
  85 /* The offset in the absolute section.  */
  86 extern addressT abs_section_offset;
  87
  88 /* The label on a line, used by some of the pseudo-ops.  */
  89 extern symbolS *line_label;
  90
  91 /* This is used to support MRI common sections.  */
  92 extern symbolS *mri_common_symbol;
  93
  94 /* True if a stabs line debug statement is currently being emitted.  */
  95 extern int outputting_stabs_line_debug;
  96
  97 /* Possible arguments to .linkonce.  */
  98 enum 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
 107 extern 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
 115 extern void pop_insert (const pseudo_typeS *);
 116 extern unsigned int get_stab_string_offset
 117   (const char *string, const char *stabstr_secname);
 118 extern void aout_process_stab (int, const char *, int, int, int);
 119 extern char *demand_copy_string (int *lenP);
 120 extern char *demand_copy_C_string (int *len_pointer);
 121 extern char get_absolute_expression_and_terminator (long *val_pointer);
 122 extern offsetT get_absolute_expression (void);
 123 extern unsigned int next_char_of_string (void);
 124 extern void s_mri_sect (char *);
 125 extern char *mri_comment_field (char *);
 126 extern void mri_comment_end (char *, int);
 127 extern void add_include_dir (char *path);
 128 extern void cons (int nbytes);
 129 extern void demand_empty_rest_of_line (void);
 130 extern void emit_expr (expressionS *exp, unsigned int nbytes);
 131 extern void emit_expr_with_reloc (expressionS *exp, unsigned int nbytes,
 132                                   TC_PARSE_CONS_RETURN_TYPE);
 133 extern void emit_expr_fix (expressionS *, unsigned int, fragS *, char *,
 134                            TC_PARSE_CONS_RETURN_TYPE);
 135 extern void equals (char *, int);
 136 extern void float_cons (int);
 137 extern void ignore_rest_of_line (void);
 138 #define discard_rest_of_line ignore_rest_of_line
 139 extern unsigned output_leb128 (char *, valueT, int);
 140 extern void pseudo_set (symbolS * symbolP);
 141 extern void read_a_source_file (const char *name);
 142 extern void read_begin (void);
 143 extern void read_print_statistics (FILE *);
 144 extern char *read_symbol_name (void);
 145 extern unsigned sizeof_leb128 (valueT, int);
 146 extern void stabs_generate_asm_file (void);
 147 extern void stabs_generate_asm_lineno (void);
 148 extern void stabs_generate_asm_func (const char *, const char *);
 149 extern void stabs_generate_asm_endfunc (const char *, const char *);
 150 extern void do_repeat (size_t, const char *, const char *);
 151 extern void do_repeat_with_expander (size_t, const char *, const char *, const char *);
 152 extern void end_repeat (int);
 153 extern void do_parse_cons_expression (expressionS *, int);
 154
 155 extern void generate_lineno_debug (void);
 156
 157 extern void s_abort (int) ATTRIBUTE_NORETURN;
 158 extern void s_align_bytes (int arg);
 159 extern void s_align_ptwo (int);
 160 extern void do_align (unsigned int align, char *fill, unsigned int length,
 161                       unsigned int max);
 162 extern void bss_alloc (symbolS *, addressT, unsigned);
 163 extern offsetT parse_align (int);
 164 extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
 165 extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
 166 extern void s_app_file_string (char *, int);
 167 extern void s_app_file (int);
 168 extern void s_app_line (int);
 169 extern void s_bundle_align_mode (int);
 170 extern void s_bundle_lock (int);
 171 extern void s_bundle_unlock (int);
 172 extern void s_comm (int);
 173 extern void s_data (int);
 174 extern void s_desc (int);
 175 extern void s_else (int arg);
 176 extern void s_elseif (int arg);
 177 extern void s_end (int arg);
 178 extern void s_endif (int arg);
 179 extern void s_err (int);
 180 extern void s_errwarn (int);
 181 extern void s_fail (int);
 182 extern void s_fill (int);
 183 extern void s_float_space (int mult);
 184 extern void s_func (int);
 185 extern void s_globl (int arg);
 186 extern void s_if (int arg);
 187 extern void s_ifb (int arg);
 188 extern void s_ifc (int arg);
 189 extern void s_ifdef (int arg);
 190 extern void s_ifeqs (int arg);
 191 extern void s_ignore (int arg);
 192 extern void s_include (int arg);
 193 extern void s_irp (int arg);
 194 extern void s_lcomm (int needs_align);
 195 extern void s_lcomm_bytes (int needs_align);
 196 extern void s_leb128 (int sign);
 197 extern void s_linkonce (int);
 198 extern void s_lsym (int);
 199 extern void s_macro (int);
 200 extern void s_mexit (int);
 201 extern void s_mri (int);
 202 extern void s_mri_common (int);
 203 extern void s_org (int);
 204 extern void s_print (int);
 205 extern void s_purgem (int);
 206 extern void s_rept (int);
 207 extern void s_set (int);
 208 extern void s_space (int mult);
 209 extern void s_stab (int what);
 210 extern void s_struct (int);
 211 extern void s_text (int);
 212 extern void stringer (int append_zero);
 213 extern void s_xstab (int what);
 214 extern void s_rva (int);
 215 extern void s_incbin (int);
 216 extern void s_weakref (int);
 217 extern void temp_ilp (char *);
 218 extern void restore_ilp (void);