* ppc-linux-nat.c (PTRACE_GET_DEBUGREG, PTRACE_SET_DEBUGREG,

	PTRACE_GETSIGINFO): Define.
	(last_stopped_data_address): New.
	(ppc_linux_check_watch_resources): New function.
	(ppc_linux_region_ok_for_hw_watchpoint): New function.
	(ppc_linux_insert_watchpoint): New function.
	(ppc_linux_remove_watchpoint): New function.
	(ppc_linux_stopped_data_address): New function.
	(ppc_linux_stopped_by_watchpoint): New function.
	(_initialize_ppc_linux_nat): Set the above hardware watchpoint
	related target vectors.
	* rs6000-tdep.c (rs6000_gdbarch_init): Set PPC architectures
	to have nonsteppable watchpoint.
	* target.c (default_region_ok_for_hw_watchpoint,
	debug_to_region_ok_for_hw_watchpoint): New prototypes.
	(update_current_target): Inherit to_region_ok_for_hw_watchpoint
	and set default to_region_ok_for_hw_watchpoint.
	(default_region_ok_for_hw_watchpoint): New function.
	(debug_to_region_ok_for_hw_watchpoint): New function.
	(setup_target_debug): Set to_region_ok_for_hw_watchpoint of
	debug_target.
	* target.h (struct target_ops): Add a new target vector
	to_region_ok_for_hw_watchpoint.
	(TARGET_REGION_OK_FOR_HW_WATCHPOINT): Define this if it is not
	defined anyplace else.

1 files changed, 29 insertions, 0 deletions

diff --git a/gdb/target.c b/gdb/target.c
index 81f8716..d542bbf 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -48,6 +48,8 @@ static void kill_or_be_killed (int);
 
 static void default_terminal_info (char *, int);
 
+static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int);
+
 static int default_region_size_ok_for_hw_watchpoint (int);
 
 static int nosymbol (char *, CORE_ADDR *);
@@ -129,6 +131,8 @@ static int debug_to_stopped_by_watchpoint (void);
 
 static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
 
+static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int);
+
 static int debug_to_region_size_ok_for_hw_watchpoint (int);
 
 static void debug_to_terminal_init (void);
@@ -406,6 +410,7 @@ update_current_target (void)
       INHERIT (to_stopped_data_address, t);
       INHERIT (to_stopped_by_watchpoint, t);
       INHERIT (to_have_continuable_watchpoint, t);
+      INHERIT (to_region_ok_for_hw_watchpoint, t);
       INHERIT (to_region_size_ok_for_hw_watchpoint, t);
       INHERIT (to_terminal_init, t);
       INHERIT (to_terminal_inferior, t);
@@ -532,6 +537,8 @@ update_current_target (void)
   de_fault (to_stopped_data_address,
 	    (int (*) (struct target_ops *, CORE_ADDR *))
 	    return_zero);
+  de_fault (to_region_ok_for_hw_watchpoint,
+	    default_region_ok_for_hw_watchpoint);
   de_fault (to_region_size_ok_for_hw_watchpoint,
 	    default_region_size_ok_for_hw_watchpoint);
   de_fault (to_terminal_init, 
@@ -1579,6 +1586,12 @@ find_default_create_inferior (char *exec_file, char *allargs, char **env,
 }
 
 static int
+default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
+{
+  return TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (len);
+}
+
+static int
 default_region_size_ok_for_hw_watchpoint (int byte_count)
 {
   return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr));
@@ -2119,6 +2132,21 @@ debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty)
 }
 
 static int
+debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
+{
+  CORE_ADDR retval;
+
+  retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len);
+
+  fprintf_unfiltered (gdb_stdlog,
+		      "TARGET_REGION_OK_FOR_HW_WATCHPOINT (%ld, %ld) = 0x%lx\n",
+		      (unsigned long) addr,
+		      (unsigned long) len,
+		      (unsigned long) retval);
+  return retval;
+}
+
+static int
 debug_to_region_size_ok_for_hw_watchpoint (int byte_count)
 {
   CORE_ADDR retval;
@@ -2537,6 +2565,7 @@ setup_target_debug (void)
   current_target.to_remove_watchpoint = debug_to_remove_watchpoint;
   current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint;
   current_target.to_stopped_data_address = debug_to_stopped_data_address;
+  current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint;
   current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint;
   current_target.to_terminal_init = debug_to_terminal_init;
   current_target.to_terminal_inferior = debug_to_terminal_inferior;