Backported from mainline

[pf3gnuchains/gcc-fork.git] / gcc / read-md.h

diff --git a/gcc/read-md.h b/gcc/read-md.h
index 0ebebde..abcca51 100644 (file)
--- a/gcc/read-md.h
+++ b/gcc/read-md.h
@@ -33,18 +33,63 @@ struct md_name {
   char *string;
 };
 
-/* This structure represents a constant defined by define_constant.
-   NAME is the name of the constant and VALUE is the string it
-   expands to.  */
+/* 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.  */
 
@@ -84,8 +129,12 @@ 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 read_constants (void);
+extern void upcase_string (char *);
 extern void traverse_md_constants (htab_trav, void *);
-extern void init_md_reader (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 *),
+                          directive_handler_t);