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, 29 insertions, 3 deletions

diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h
index 2cb56b74488..18a7ce791ae 100644
--- a/gdb/breakpoint.h
+++ b/gdb/breakpoint.h
@@ -231,6 +231,10 @@ struct bp_target_info
      is used to determine the type of breakpoint to insert.  */
   CORE_ADDR placed_address;
 
+  /* If this is a ranged breakpoint, then this field contains the
+     length of the range that will be watched for execution.  */
+  int length;
+
   /* If the breakpoint lives in memory and reading that memory would
      give back the breakpoint, instead of the original contents, then
      the original contents are cached here.  Only SHADOW_LEN bytes of
@@ -339,7 +343,8 @@ struct bp_location
   CORE_ADDR address;
 
   /* For hardware watchpoints, the size of the memory region being
-     watched.  */
+     watched.  For hardware ranged breakpoints, the size of the
+     breakpoint range.  */
   int length;
 
   /* Type of hardware watchpoint.  */
@@ -397,7 +402,8 @@ struct breakpoint_ops
 
   /* Return non-zero if the debugger should tell the user that this
      breakpoint was hit.  */
-  int (*breakpoint_hit) (struct breakpoint *);
+  int (*breakpoint_hit) (const struct bp_location *, struct address_space *,
+			 CORE_ADDR);
 
   /* Tell how many hardware resources (debug registers) are needed
      for this breakpoint.  If this function is not provided, then
@@ -412,6 +418,20 @@ struct breakpoint_ops
      breakpoints".  */
   void (*print_one) (struct breakpoint *, struct bp_location **);
 
+  /* Display extra information about this breakpoint, below the normal
+     breakpoint description in "info breakpoints".
+
+     In the example below, the "address range" line was printed
+     by print_one_detail_ranged_breakpoint.
+
+     (gdb) info breakpoints
+     Num     Type           Disp Enb Address    What
+     2       hw breakpoint  keep y              in main at test-watch.c:70
+	     address range: [0x10000458, 0x100004c7]
+
+   */
+  void (*print_one_detail) (const struct breakpoint *, struct ui_out *);
+
   /* Display information about this breakpoint after setting it
      (roughly speaking; this is called from "mention").  */
   void (*print_mention) (struct breakpoint *);
@@ -502,6 +522,11 @@ struct breakpoint
 
     /* String we used to set the breakpoint (malloc'd).  */
     char *addr_string;
+
+    /* For a ranged breakpoint, the string we used to find
+       the end of the range (malloc'd).  */
+    char *addr_string_range_end;
+
     /* Architecture we used to set the breakpoint.  */
     struct gdbarch *gdbarch;
     /* Language we used to set the breakpoint.  */
@@ -904,7 +929,8 @@ extern int breakpoint_thread_match (struct address_space *,
 extern void until_break_command (char *, int, int);
 
 extern void update_breakpoint_locations (struct breakpoint *b,
-					 struct symtabs_and_lines sals);
+					 struct symtabs_and_lines sals,
+					 struct symtabs_and_lines sals_end);
 
 extern void breakpoint_re_set (void);