gas/read.h

/* read.h - of read.c
   Copyright (C) 1986-2024 Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   GAS is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
   02110-1301, USA.  */

extern char *input_line_pointer;	/* -> char we are parsing now.  */
extern bool input_from_string;

/* Define to make whitespace be allowed in many syntactically
   unnecessary places.  Normally undefined.  For compatibility with
   ancient GNU cc.  */
/* #undef PERMIT_WHITESPACE */
#define PERMIT_WHITESPACE

#ifdef PERMIT_WHITESPACE
#define SKIP_WHITESPACE()			\
  ((*input_line_pointer == ' ') ? ++input_line_pointer : 0)
#define SKIP_ALL_WHITESPACE()			\
  while (*input_line_pointer == ' ') ++input_line_pointer
#else
#define SKIP_WHITESPACE() know (*input_line_pointer != ' ' )
#define SKIP_ALL_WHITESPACE() SKIP_WHITESPACE()
#endif

#define SKIP_WHITESPACE_AFTER_NAME()		\
  do						\
    {						\
      if (* input_line_pointer == '"')		\
	++ input_line_pointer;			\
      if (* input_line_pointer == ' ')		\
	++ input_line_pointer;			\
    }						\
  while (0)

#define	LEX_NAME	(1)	/* may continue a name */
#define LEX_BEGIN_NAME	(2)	/* may begin a name */
#define LEX_END_NAME	(4)	/* ends a name */

#define is_name_beginner(c) \
  ( lex_type[(unsigned char) (c)] & LEX_BEGIN_NAME )
#define is_part_of_name(c) \
  ( lex_type[(unsigned char) (c)] & LEX_NAME       )
#define is_name_ender(c) \
  ( lex_type[(unsigned char) (c)] & LEX_END_NAME   )

/* The distinction of "line" and "statement" sadly is blurred by unhelpful
   naming of e.g. the underlying array.  Most users really mean "end of
   statement".  Going forward only these wrappers are supposed to be used.  */
#define is_end_of_stmt(c) \
  (is_end_of_line[(unsigned char) (c)])
#define is_end_of_line(c) \
  (is_end_of_line[(unsigned char) (c)] == 1)

#ifndef is_a_char
#define CHAR_MASK	(0xff)
#define NOT_A_CHAR	(CHAR_MASK+1)
#define is_a_char(c)	(((unsigned) (c)) <= CHAR_MASK)
#endif /* is_a_char() */

extern char lex_type[];
extern char is_end_of_line[];

extern int is_it_end_of_statement (void);
extern char *find_end_of_line (char *, int);

extern int target_big_endian;

/* These are initialized by the CPU specific target files (tc-*.c).  */
extern const char comment_chars[];
extern const char line_comment_chars[];
extern const char line_separator_chars[];

/* Table of -I directories.  */
extern const char **include_dirs;
extern size_t include_dir_count;
extern size_t include_dir_maxlen;

/* The offset in the absolute section.  */
extern addressT abs_section_offset;

/* The label on a line, used by some of the pseudo-ops.  */
extern symbolS *line_label;

/* This is used to support MRI common sections.  */
extern symbolS *mri_common_symbol;

/* True if a stabs line debug statement is currently being emitted.  */
extern int outputting_stabs_line_debug;

/* Possible arguments to .linkonce.  */
enum linkonce_type {
  LINKONCE_UNSET = 0,
  LINKONCE_DISCARD,
  LINKONCE_ONE_ONLY,
  LINKONCE_SAME_SIZE,
  LINKONCE_SAME_CONTENTS
};

#ifndef TC_CASE_SENSITIVE
extern char original_case_string[];
#endif

#ifndef TC_PARSE_CONS_RETURN_TYPE
#define TC_PARSE_CONS_RETURN_TYPE bfd_reloc_code_real_type
#define TC_PARSE_CONS_RETURN_NONE BFD_RELOC_NONE
#endif

extern void pop_insert (const pseudo_typeS *);
extern unsigned int get_stab_string_offset (const char *, segT);
extern void aout_process_stab (int, const char *, int, int, int);
extern char *demand_copy_string (int *lenP);
extern char *demand_copy_C_string (int *len_pointer);
extern char get_absolute_expression_and_terminator (long *val_pointer);
extern offsetT get_absolute_expression (void);
extern unsigned int next_char_of_string (void);
extern void s_mri_sect (char *);
extern char *mri_comment_field (char *);
extern void mri_comment_end (char *, int);
extern void init_include_dir (void);
extern void add_include_dir (char *);
extern FILE *search_and_open (const char *, char *);
extern void cons (int nbytes);
extern void demand_empty_rest_of_line (void);
extern void emit_expr (expressionS *exp, unsigned int nbytes);
extern void emit_expr_with_reloc (expressionS *exp, unsigned int nbytes,
				  TC_PARSE_CONS_RETURN_TYPE);
extern void emit_expr_fix (expressionS *, unsigned int, fragS *, char *,
			   TC_PARSE_CONS_RETURN_TYPE);
extern void emit_leb128_expr (expressionS *, int);
extern void equals (char *, int);
extern void float_cons (int);
extern void ignore_rest_of_line (void);
#define discard_rest_of_line ignore_rest_of_line
extern unsigned output_leb128 (char *, valueT, int);
extern void pseudo_set (symbolS * symbolP);
extern void read_a_source_file (const char *name);
extern void read_begin (void);
extern void read_end (void);
extern void read_print_statistics (FILE *);
extern char *read_symbol_name (void);
extern unsigned sizeof_leb128 (valueT, int);
extern void stabs_generate_asm_file (void);
extern void stabs_generate_asm_lineno (void);
extern void stabs_generate_asm_func (const char *, const char *);
extern void stabs_generate_asm_endfunc (const char *, const char *);
extern void stabs_begin (void);
extern void stabs_end (void);
extern void do_repeat (size_t, const char *, const char *, const char *);
extern void end_repeat (int);
extern void do_parse_cons_expression (expressionS *, int);
extern void generate_lineno_debug (void);
extern void do_align (unsigned int align, char *fill, unsigned int length,
		      unsigned int max);
extern void bss_alloc (symbolS *, addressT, unsigned);
extern offsetT parse_align (int);
extern symbolS *s_comm_internal (int, symbolS *(*) (int, symbolS *, addressT));
extern symbolS *s_lcomm_internal (int, symbolS *, addressT);
extern void temp_ilp (char *);
extern void restore_ilp (void);
extern void s_file_string (char *);

extern void s_abort (int) ATTRIBUTE_NORETURN;
extern void s_align_bytes (int);
extern void s_align_ptwo (int);
extern void s_base64 (int);
extern void s_bundle_align_mode (int);
extern void s_bundle_lock (int);
extern void s_bundle_unlock (int);
extern void s_comm (int);
extern void s_data (int);
extern void s_desc (int);
extern void s_else (int);
extern void s_elseif (int);
extern void s_end (int);
extern void s_endif (int);
extern void s_err (int);
extern void s_errwarn (int);
extern void s_fail (int);
extern void s_file (int);
extern void s_fill (int);
extern void s_float_space (int);
extern void s_func (int);
extern void s_globl (int);
extern void s_if (int);
extern void s_ifb (int);
extern void s_ifc (int);
extern void s_ifdef (int);
extern void s_ifeqs (int);
extern void s_ignore (int);
extern void s_incbin (int);
extern void s_include (int);
extern void s_irp (int);
extern void s_lcomm (int);
extern void s_lcomm_bytes (int);
extern void s_leb128 (int);
extern void s_linefile (int);
extern void s_linkonce (int);
extern void s_lsym (int);
extern void s_macro (int);
extern void s_mexit (int);
extern void s_mri (int);
extern void s_mri_common (int);
extern void s_nop (int);
extern void s_nops (int);
extern void s_org (int);
extern void s_print (int);
extern void s_purgem (int);
extern void s_rept (int);
extern void s_rva (int);
extern void s_set (int);
extern void s_space (int);
extern void s_stab (int);
extern void s_struct (int);
extern void s_text (int);
extern void s_weakref (int);
extern void s_xstab (int);
extern void stringer (int);