2011-03-31 Thiago Jung Bauermann <bauerman@br.ibm.com>

	    Sergio Durigan Junior  <sergiodj@linux.vnet.ibm.com>

	Implement support for PowerPC BookE ranged breakpoints.

gdb/
	* NEWS: Mention support for ranged breakpoints on embedded PowerPC.
	* breakpoint.h (struct bp_target_info) <length>: New member
	variable.
	(struct breakpoint_ops) <breakpoint_hit>: Take struct bp_location
	instead of struct breakpoint as argument, and also add ASPACE
	and BP_ADDR arguments.  Update all callers.
	(struct breakpoint_ops) <print_one_detail>: New method.
	(struct breakpoint) <addr_string_range_end>: New member variable.
	* breakpoint.c (breakpoint_location_address_match): Add function
	prototype.
	(insert_bp_location): Set bl->target_info.length.
	(breakpoint_here_p): Call breakpoint_location_address_match.
	(moribund_breakpoint_here_p): Likewise.
	(regular_breakpoint_inserted_here_p): Likewise.
	(breakpoint_thread_match): Likewise.
	(bpstat_stop_status): Likewise.
	(bpstat_check_location): Move call to
	breakpoint_ops.breakpoint_hit to the top.
	(print_one_breakpoint_location): Call
	breakpoint_ops.print_one_detail if available.
	(breakpoint_address_match_range): New function.
	(breakpoint_location_address_match): Likewise.
	(breakpoint_locations_match): Compare the length field of the
	locations too.
	(hw_breakpoint_used_count): Count resources used by all locations
	in a breakpoint, and use breakpoint_ops.resources_needed if
	available.
	(breakpoint_hit_ranged_breakpoint): New function.
	(resources_needed_ranged_breakpoint): Likewise.
	(print_it_ranged_breakpoint): Likewise.
	(print_one_ranged_breakpoint): Likewise.
	(print_one_detail_ranged_breakpoint): Likewise.
	(print_mention_ranged_breakpoint): Likewise.
	(print_recreate_ranged_breakpoint): Likewise.
	(ranged_breakpoint_ops): New structure.
	(find_breakpoint_range_end): New function.
	(break_range_command): Likewise.
	(delete_breakpoint): Free addr_string_range_end.
	(update_breakpoint_locations): Add SALS_END argument.  Update
	all callers.  Calculate breakpoint length if a non-zero SALS_END
	is given.  Call breakpoint_locations_match instead of
	breakpoint_address_match.
	(reset_breakpoint): Find SaL of the end of the range if B is a
	ranged breakpoint.
	(_initialize_breakpoint): Register break-range command.
	* defs.h (print_core_address): Add function prototype.
	* ppc-linux-nat.c (ppc_linux_ranged_break_num_registers): New
	function.
	(ppc_linux_insert_hw_breakpoint): Support ranged breakpoints.
	(ppc_linux_remove_hw_breakpoint): Likewise.
	(_initialize_ppc_linux_nat): Initialize
	to_ranged_break_num_registers.
	* target.c (update_current_target): Add comment about
	to_ranged_break_num_registers.
	(target_ranged_break_num_registers): New function.
	* target.h (struct target_ops) <to_ranged_break_num_registers>:
	New method.
	(target_ranged_break_num_registers): Add function prototype.
	* ui-out.c (ui_out_field_core_addr): Move address-printing logic to ...
	* utils.c (print_core_address): ... here.

gdb/doc/
	* gdb.texinfo (PowerPC Embedded): Document ranged breakpoints.

1 files changed, 6 insertions, 0 deletions

diff --git a/gdb/target.h b/gdb/target.h
index 237d1aa..f0b2e43 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -450,6 +450,7 @@ struct target_ops
     int (*to_insert_breakpoint) (struct gdbarch *, struct bp_target_info *);
     int (*to_remove_breakpoint) (struct gdbarch *, struct bp_target_info *);
     int (*to_can_use_hw_breakpoint) (int, int, int);
+    int (*to_ranged_break_num_registers) (struct target_ops *);
     int (*to_insert_hw_breakpoint) (struct gdbarch *, struct bp_target_info *);
     int (*to_remove_hw_breakpoint) (struct gdbarch *, struct bp_target_info *);
 
@@ -1354,6 +1355,11 @@ extern char *target_thread_name (struct thread_info *);
 #define target_remove_hw_breakpoint(gdbarch, bp_tgt) \
      (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt)
 
+/* Return number of debug registers needed for a ranged breakpoint,
+   or -1 if ranged breakpoints are not supported.  */
+
+extern int target_ranged_break_num_registers (void);
+
 /* Return non-zero if target knows the data address which triggered this
    target_stopped_by_watchpoint, in such case place it to *ADDR_P.  Only the
    INFERIOR_PTID task is being queried.  */