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/* MD reader definitions.
Copyright (C) 1987-2013 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<>. */
#include "obstack.h"
#include "hashtab.h"
/* Holds one symbol or number in the .md file. */
struct md_name {
/* The name as it appeared in the .md file. Names are syntactically
limited to the length of this buffer. */
char buffer[256];
/* The name that should actually be used by the generator programs.
This is an expansion of NAME, after things like constant substitution. */
char *string;
/* This structure represents a constant defined by define_constant,
define_enum, or such-like. */
struct md_constant {
/* The name of the constant. */
char *name;
/* The string to which the constants expands. */
char *value;
/* If the constant is associated with a enumeration, this field
points to that enumeration, otherwise it is null. */
struct enum_type *parent_enum;
/* This structure represents one value in an enum_type. */
struct enum_value {
/* The next value in the enum, or null if this is the last. */
struct enum_value *next;
/* The name of the value as it appears in the .md file. */
char *name;
/* The definition of the related C value. */
struct md_constant *def;
/* This structure represents an enum defined by define_enum or the like. */
struct enum_type {
/* The C name of the enumeration. */
char *name;
/* True if this is an md-style enum (DEFINE_ENUM) rather than
a C-style enum (DEFINE_C_ENUM). */
bool md_p;
/* The values of the enumeration. There is always at least one. */
struct enum_value *values;
/* A pointer to the null terminator in VALUES. */
struct enum_value **tail_ptr;
/* The number of enumeration values. */
unsigned int num_values;
/* A callback that handles a single .md-file directive, up to but not
including the closing ')'. It takes two arguments: the line number on
which the directive started, and the name of the directive. The next
unread character is the optional space after the directive name. */
typedef void (*directive_handler_t) (int, const char *);
extern const char *in_fname;
extern FILE *read_md_file;
extern int read_md_lineno;
extern const char *read_md_filename;
extern struct obstack string_obstack;
extern void (*include_callback) (const char *);
/* Read the next character from the MD file. */
static inline int
read_char (void)
int ch;
ch = getc (read_md_file);
if (ch == '\n')
return ch;
/* Put back CH, which was the last character read from the MD file. */
static inline void
unread_char (int ch)
if (ch == '\n')
ungetc (ch, read_md_file);
extern hashval_t leading_string_hash (const void *);
extern int leading_string_eq_p (const void *, const void *);
extern void copy_md_ptr_loc (const void *, const void *);
extern void print_md_ptr_loc (const void *);
extern void fprint_md_ptr_loc (FILE *, const void *);
extern const char *join_c_conditions (const char *, const char *);
extern void print_c_condition (const char *);
extern void fprint_c_condition (FILE *, const char *);
extern void message_with_line (int, const char *, ...) ATTRIBUTE_PRINTF_2;
extern void error_with_line (int, const char *, ...) ATTRIBUTE_PRINTF_2;
extern void fatal_with_file_and_line (const char *, ...)
extern void fatal_expected_char (int, int) ATTRIBUTE_NORETURN;
extern int read_skip_spaces (void);
extern void read_name (struct md_name *);
extern char *read_quoted_string (void);
extern char *read_string (int);
extern void read_skip_construct (int, int);
extern int n_comma_elts (const char *);
extern const char *scan_comma_elt (const char **);
extern void upcase_string (char *);
extern void traverse_md_constants (htab_trav, void *);
extern void traverse_enum_types (htab_trav, void *);
extern struct enum_type *lookup_enum_type (const char *);
extern bool read_md_files (int, char **, bool (*) (const char *),