--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/debug.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,177 @@
+/* Debug hooks for GCC.
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008
+   Free Software Foundation, Inc.
+
+   This program 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.
+
+   This program 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 this program; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_DEBUG_H
+#define GCC_DEBUG_H
+
+/* This structure contains hooks for the debug information output
+   functions, accessed through the global instance debug_hooks set in
+   toplev.c according to command line options.  */
+struct gcc_debug_hooks
+{
+  /* Initialize debug output.  MAIN_FILENAME is the name of the main
+     input file.  */
+  void (* init) (const char *main_filename);
+
+  /* Output debug symbols.  */
+  void (* finish) (const char *main_filename);
+
+  /* Macro defined on line LINE with name and expansion TEXT.  */
+  void (* define) (unsigned int line, const char *text);
+
+  /* MACRO undefined on line LINE.  */
+  void (* undef) (unsigned int line, const char *macro);
+
+  /* Record the beginning of a new source file FILE from LINE number
+     in the previous one.  */
+  void (* start_source_file) (unsigned int line, const char *file);
+
+  /* Record the resumption of a source file.  LINE is the line number
+     in the source file we are returning to.  */
+  void (* end_source_file) (unsigned int line);
+
+  /* Record the beginning of block N, counting from 1 and not
+     including the function-scope block, at LINE.  */
+  void (* begin_block) (unsigned int line, unsigned int n);
+
+  /* Record the end of a block.  Arguments as for begin_block.  */
+  void (* end_block) (unsigned int line, unsigned int n);
+
+  /* Returns nonzero if it is appropriate not to emit any debugging
+     information for BLOCK, because it doesn't contain any
+     instructions.  This may not be the case for blocks containing
+     nested functions, since we may actually call such a function even
+     though the BLOCK information is messed up.  Defaults to true.  */
+  bool (* ignore_block) (const_tree);
+
+  /* Record a source file location at (FILE, LINE).  */
+  void (* source_line) (unsigned int line, const char *file);
+
+  /* Called at start of prologue code.  LINE is the first line in the
+     function.  This has been given the same prototype as source_line,
+     so that the source_line hook can be substituted if appropriate.  */
+  void (* begin_prologue) (unsigned int line, const char *file);
+
+  /* Called at end of prologue code.  LINE is the first line in the
+     function.  */
+  void (* end_prologue) (unsigned int line, const char *file);
+
+  /* Record end of epilogue code.  */
+  void (* end_epilogue) (unsigned int line, const char *file);
+
+  /* Called at start of function DECL, before it is declared.  */
+  void (* begin_function) (tree decl);
+
+  /* Record end of function.  LINE is highest line number in function.  */
+  void (* end_function) (unsigned int line);
+
+  /* Debug information for a function DECL.  This might include the
+     function name (a symbol), its parameters, and the block that
+     makes up the function's body, and the local variables of the
+     function.  */
+  void (* function_decl) (tree decl);
+
+  /* Debug information for a global DECL.  Called from toplev.c after
+     compilation proper has finished.  */
+  void (* global_decl) (tree decl);
+
+  /* Debug information for a type DECL.  Called from toplev.c after
+     compilation proper, also from various language front ends to
+     record built-in types.  The second argument is properly a
+     boolean, which indicates whether or not the type is a "local"
+     type as determined by the language.  (It's not a boolean for
+     legacy reasons.)  */
+  void (* type_decl) (tree decl, int local);
+
+  /* Debug information for imported modules and declarations.  */
+  void (* imported_module_or_decl) (tree decl, tree name,
+				    tree context, bool child);
+
+  /* DECL is an inline function, whose body is present, but which is
+     not being output at this point.  */
+  void (* deferred_inline_function) (tree decl);
+
+  /* DECL is an inline function which is about to be emitted out of
+     line.  The hook is useful to, e.g., emit abstract debug info for
+     the inline before it gets mangled by optimization.  */
+  void (* outlining_inline_function) (tree decl);
+
+  /* Called from final_scan_insn for any CODE_LABEL insn whose
+     LABEL_NAME is non-null.  */
+  void (* label) (rtx);
+
+  /* Called after the start and before the end of writing a PCH file.
+     The parameter is 0 if after the start, 1 if before the end.  */
+  void (* handle_pch) (unsigned int);
+
+  /* Called from final_scan_insn for any NOTE_INSN_VAR_LOCATION note.  */
+  void (* var_location) (rtx);
+
+  /* Called from final_scan_insn if there is a switch between hot and cold
+     text sections.  */
+  void (* switch_text_section) (void);
+
+  /* This is 1 if the debug writer wants to see start and end commands for the
+     main source files, and 0 otherwise.  */
+  int start_end_main_source_file;
+};
+
+extern const struct gcc_debug_hooks *debug_hooks;
+
+/* The do-nothing hooks.  */
+extern void debug_nothing_void (void);
+extern void debug_nothing_charstar (const char *);
+extern void debug_nothing_int_charstar (unsigned int, const char *);
+extern void debug_nothing_int (unsigned int);
+extern void debug_nothing_int_int (unsigned int, unsigned int);
+extern void debug_nothing_tree (tree);
+extern void debug_nothing_tree_int (tree, int);
+extern void debug_nothing_tree_tree_tree_bool (tree, tree, tree, bool);
+extern bool debug_true_const_tree (const_tree);
+extern void debug_nothing_rtx (rtx);
+
+/* Hooks for various debug formats.  */
+extern const struct gcc_debug_hooks do_nothing_debug_hooks;
+extern const struct gcc_debug_hooks dbx_debug_hooks;
+extern const struct gcc_debug_hooks sdb_debug_hooks;
+extern const struct gcc_debug_hooks xcoff_debug_hooks;
+extern const struct gcc_debug_hooks dwarf2_debug_hooks;
+extern const struct gcc_debug_hooks vmsdbg_debug_hooks;
+
+/* Dwarf2 frame information.  */
+
+extern void dwarf2out_begin_prologue (unsigned int, const char *);
+extern void dwarf2out_end_epilogue (unsigned int, const char *);
+extern void dwarf2out_frame_init (void);
+extern void dwarf2out_frame_finish (void);
+/* Decide whether we want to emit frame unwind information for the current
+   translation unit.  */
+extern int dwarf2out_do_frame (void);
+extern int dwarf2out_do_cfi_asm (void);
+extern void dwarf2out_switch_text_section (void);
+
+extern void debug_flush_symbol_queue (void);
+extern void debug_queue_symbol (tree);
+extern void debug_free_queue (void);
+extern int debug_nesting;
+extern int symbol_queue_index;
+
+const char *remap_debug_filename (const char *);
+void add_debug_prefix_map (const char *);
+
+#endif /* !GCC_DEBUG_H  */