-/* Toplevel initialization for EH. */
-
-void set_exception_lang_code PARAMS ((int));
-void set_exception_version_code PARAMS ((int));
-
-/* A list of handlers asocciated with an exception region. HANDLER_LABEL
- is the the label that control should be transfered to if the data
- in TYPE_INFO matches an exception. a value of NULL_TREE for TYPE_INFO
- means This is a cleanup, and must always be called. A value of
- CATCH_ALL_TYPE works like a cleanup, but a call to the runtime matcher
- is still performed to avoid being caught by a different language
- exception. NEXT is a pointer to the next handler for this region.
- NULL means there are no more. */
-
-typedef struct handler_info
-{
- rtx handler_label;
- int handler_number;
- void *type_info;
- struct handler_info *next;
-} handler_info;
-
-
-/* Add new handler information to an exception range. The first parameter
- specifies the range number (returned from new_eh_entry()). The second
- parameter specifies the handler. By default the handler is inserted at
- the end of the list. A handler list may contain only ONE NULL_TREE
- typeinfo entry. Regardless where it is positioned, a NULL_TREE entry
- is always output as the LAST handler in the exception table for a region. */
-
-void add_new_handler PARAMS ((int, struct handler_info *));
-
-/* Remove a handler label. The handler label is being deleted, so all
- regions which reference this handler should have it removed from their
- list of possible handlers. Any region which has the final handler
- removed can be deleted. */
-
-void remove_handler PARAMS ((rtx));
-
-/* Create a new handler structure initialized with the handler label and
- typeinfo fields passed in. */
-
-struct handler_info *get_new_handler PARAMS ((rtx, void *));
-
-/* Make a duplicate of an exception region by copying all the handlers
- for an exception region. Return the new handler index. */
-
-int duplicate_eh_handlers PARAMS ((int, int, rtx (*)(rtx)));
-
-/* map symbol refs for rethrow */
-
-rtx rethrow_symbol_map PARAMS ((rtx, rtx (*)(rtx)));
-
-/* Is the rethrow label for a region used? */
-
-int rethrow_used PARAMS ((int));
-
-/* Update the rethrow references to reflect rethrows which have been
- optimized away. */
-
-void update_rethrow_references PARAMS ((void));
-
-/* Get a pointer to the first handler in an exception region's list. */
-
-struct handler_info *get_first_handler PARAMS ((int));
-
-/* Find all the runtime handlers type matches currently referenced */
-
-int find_all_handler_type_matches PARAMS ((void ***));
-
-/* The eh_nesting_info structure is used to find a list of valid handlers
- for any arbitrary exception region. When init_eh_nesting_info is called,
- the information is all pre-calculated and entered in this structure.
- REGION_INDEX is a vector over all possible region numbers. Since the
- number of regions is typically much smaller than the range of block
- numbers, this is a sparse vector and the other data structures are
- represented as dense vectors. Indexed with an exception region number, this
- returns the index to use in the other data structures to retreive the
- correct information.
- HANDLERS is an array of vectors which point to handler_info structures.
- when indexed, it gives the list of all possible handlers which can
- be reached by a throw from this exception region.
- NUM_HANDLERS is the equivilent array indicating how many handler
- pointers there are in the HANDLERS vector.
- OUTER_INDEX indicates which index represents the information for the
- outer block. 0 indicates there is no outer context.
- REGION_COUNT is the number of regions. */
-
-typedef struct eh_nesting
-{
- int *region_index;
- handler_info ***handlers;
- int *num_handlers;
- int *outer_index;
- int region_count;
-} eh_nesting_info;
-
-/* Initialize the eh_nesting_info structure. */
-
-eh_nesting_info *init_eh_nesting_info PARAMS ((void));
-
-/* Get a list of handlers reachable from a an exception region/insn. */
-
-int reachable_handlers PARAMS ((int, eh_nesting_info *, rtx,
- handler_info ***handlers));
-
-/* Free the eh_nesting_info structure. */
-
-void free_eh_nesting_info PARAMS ((eh_nesting_info *));
-
-extern void init_eh PARAMS ((void));
-
-/* Initialization for the per-function EH data. */
-
-extern void init_eh_for_function PARAMS ((void));
-
-/* Generate an exception label. Use instead of gen_label_rtx */
-
-extern rtx gen_exception_label PARAMS ((void));
-
-/* Adds an EH table entry for EH entry number N. Called from
- final_scan_insn for NOTE_INSN_EH_REGION_BEG. */
-
-extern void add_eh_table_entry PARAMS ((int n));
-
-/* Start a catch clause, triggered by runtime value paramter. */
-
-#ifdef TREE_CODE
-extern void start_catch_handler PARAMS ((tree));
-#endif
-
-/* End an individual catch clause. */
-
-extern void end_catch_handler PARAMS ((void));
-
-/* Returns a non-zero value if we need to output an exception table. */
-
-extern int exception_table_p PARAMS ((void));
-
-/* Outputs the exception table if we have one. */
-
-extern void output_exception_table PARAMS ((void));
-extern void output_exception_table_data PARAMS ((void));
-
-/* Free the exception table. */
-
-extern void free_exception_table PARAMS((void));
-
-/* Used by the ia64 unwind format to output data for an individual
- function. */
-
-extern void output_function_exception_table PARAMS((void));
-
-/* Given a return address in ADDR, determine the address we should use
- to find the corresponding EH region. */
-
-extern rtx eh_outer_context PARAMS ((rtx addr));
-
-/* Called at the start of a block of try statements for which there is
- a supplied catch handler. */
-
-extern void expand_start_try_stmts PARAMS ((void));