Add h/w watchpoint support to x86-linux, win32-i386.

	* Makefile.in (SFILES): Add i386-low.c
	(i386_low_h): Define.
	(i386-low.o): Add dependencies.
	(linux-x86-low.o): Add i386-low.h dependency.
	(win32-i386-low.o): Ditto.
	* i386-low.c: New file.
	* i386-low.h: New file.
	* configure.srv (i[34567]86-*-cygwin*): Add i386-low.o to srv_tgtobj.
	(i[34567]86-*-linux*, i[34567]86-*-mingw*, x86_64-*-linux*): Ditto.
	* linux-low.c (linux_add_process): Initialize arch_private.
	(linux_remove_process): Free arch_private.
	(add_lwp): Initialize arch_private.
	(delete_lwp): Free arch_private.
	(linux_resume_one_lwp): Call the_low_target.prepare_to_resume if
	provided.
	* linux-low.h (process_info_private): New member arch_private.
	(lwp_info): New member arch_private.
	(linux_target_ops): New members new_process, new_thread,
	prepare_to_resume.
	(ptid_of): New macro.
	* linux-x86-low.c: Include stddef.h, i386-low.h.
	(arch_process_info): New struct.
	(arch_lwp_info): New struct.
	(x86_linux_dr_get, x86_linux_dr_set): New functions.
	(i386_dr_low_set_addr, i386_dr_low_set_control): New functions.
	(i386_dr_low_get_status): New function.
	(x86_insert_point, x86_remove_point): New functions.
	(x86_stopped_by_watchpoint): New function.
	(x86_stopped_data_address): New function.
	(x86_linux_new_process, x86_linux_new_thread): New functions.
	(x86_linux_prepare_to_resume): New function.
	(the_low_target): Add entries for insert_point, remove_point,
	stopped_by_watchpoint, stopped_data_address, new_process, new_thread,
	prepare_to_resume.
	* server.c (debug_hw_points): New global.
	(monitor_show_help): Document set debug-hw-points.
	(handle_query): Process "set debug-hw-points".
	* server.h (debug_hw_points): Declare.
	(paddress): Declare.
	* utils.c (NUMCELLS, CELLSIZE): New macros.
	(get_sell, xsnprintf, paddress): New functions.
	* win32-arm-low.c (the_low_target): Add entries for insert_point,
	remove_point, stopped_by_watchpoint, stopped_data_address.
	* win32-i386-low.c: Include i386-low.h.
	(debug_reg_state): Replaces dr.
	(i386_dr_low_set_addr, i386_dr_low_set_control): New functions.
	(i386_dr_low_get_status): New function.
	(i386_insert_point, i386_remove_point): New functions.
	(i386_stopped_by_watchpoint): New function.
	(i386_stopped_data_address): New function.
	(i386_initial_stuff): Update.
	(get_thread_context,set_thread_context,i386_thread_added): Update.
	(the_low_target): Add entries for insert_point,
	remove_point, stopped_by_watchpoint, stopped_data_address.
	* win32-low.c (win32_insert_watchpoint): New function.
	(win32_remove_watchpoint): New function.
	(win32_stopped_by_watchpoint): New function.
	(win32_stopped_data_address): New function.
	(win32_target_ops): Add entries for insert_watchpoint,
	remove_watchpoint, stopped_by_watchpoint, stopped_data_address.
	* win32-low.h (win32_target_ops): New members insert_point,
	remove_point, stopped_by_watchpoint, stopped_data_address.

1 files changed, 11 insertions, 1 deletions

diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 9f325181391..5284a983971 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -224,6 +224,7 @@ delete_lwp (struct lwp_info *lwp)
 {
   remove_thread (get_lwp_thread (lwp));
   remove_inferior (&all_lwps, &lwp->head);
+  free (lwp->arch_private);
   free (lwp);
 }
 
@@ -242,6 +243,9 @@ linux_add_process (int pid, int attached)
   proc = add_process (pid, attached);
   proc->private = xcalloc (1, sizeof (*proc->private));
 
+  if (the_low_target.new_process != NULL)
+    proc->private->arch_private = the_low_target.new_process ();
+
   return proc;
 }
 
@@ -251,6 +255,7 @@ linux_add_process (int pid, int attached)
 static void
 linux_remove_process (struct process_info *process)
 {
+  free (process->private->arch_private);
   free (process->private);
   remove_process (process);
 }
@@ -376,6 +381,9 @@ add_lwp (ptid_t ptid)
 
   lwp->head.id = ptid;
 
+  if (the_low_target.new_thread != NULL)
+    lwp->arch_private = the_low_target.new_thread ();
+
   add_inferior_to_list (&all_lwps, &lwp->head);
 
   return lwp;
@@ -466,7 +474,6 @@ linux_attach_lwp_1 (unsigned long lwpid, int initial)
   new_lwp = (struct lwp_info *) add_lwp (ptid);
   add_thread (ptid, new_lwp);
 
-
   /* We need to wait for SIGSTOP before being able to make the next
      ptrace call on this LWP.  */
   new_lwp->must_set_ptrace_flags = 1;
@@ -1740,6 +1747,9 @@ linux_resume_one_lwp (struct lwp_info *lwp,
       *p_sig = NULL;
     }
 
+  if (the_low_target.prepare_to_resume != NULL)
+    the_low_target.prepare_to_resume (lwp);
+
   regcache_invalidate_one ((struct inferior_list_entry *)
 			   get_lwp_thread (lwp));
   errno = 0;