Patch: Enable target "stop" for RDI

[Grant Edwards <grante at visi dot com>]

The attached patch agains 5.0 sources addsa to_stop() method to
the rdi target, and calls ui_loop_hook() while target is
executing.  These changes are required for the "stop" button in
the Insight GUI to work.

-- 
Grant Edwards
grante@visi.com
diff -Naur insight-5.0/gdb/rdi-share/ardi.c insight-5.0-mod/gdb/rdi-share/ardi.c
--- insight-5.0/gdb/rdi-share/ardi.c	Mon Jan 17 18:54:36 2000
+++ insight-5.0-mod/gdb/rdi-share/ardi.c	Thu Aug 24 13:09:01 2000
@@ -396,6 +396,7 @@
 
 static bool boot_interrupted = FALSE;
 static volatile bool interrupt_request = FALSE;
+static volatile bool stop_request = FALSE;
 
 static void ardi_sigint_handler(int sig) {
 #ifdef DEBUG
@@ -1343,10 +1344,16 @@
                                     Packet *packet );
 #endif
 
+void angel_RDI_stop_request(void)
+{
+  stop_request = 1;
+}
+
 /* Core functionality for execute and step */
 static int angel_RDI_ExecuteOrStep(PointHandle *handle, word type, 
                                    unsigned ninstr)
 {
+  extern int (*ui_loop_hook) (int);
   int err;
   adp_stopped_struct stopped_info;
   void* stateptr = (void *)&stopped_info;
@@ -1401,15 +1408,22 @@
   angel_DebugPrint("Waiting for program to finish...\n");
 #endif
 
+  interrupt_request = FALSE;
+  stop_request = FALSE;
+  
   signal(SIGINT, ardi_sigint_handler);
   while( executing )
   {
-      if (interrupt_request)
+    if (ui_loop_hook)
+      ui_loop_hook(0);
+    
+    if (interrupt_request || stop_request)
       {
         interrupt_target();
         interrupt_request = FALSE;
+        stop_request = FALSE;
       }
-      Adp_AsynchronousProcessing( async_block_on_nothing );
+    Adp_AsynchronousProcessing( async_block_on_nothing );
   }
   signal(SIGINT, SIG_IGN);
 
diff -Naur insight-5.0/gdb/rdi-share/ardi.h insight-5.0-mod/gdb/rdi-share/ardi.h
--- insight-5.0/gdb/rdi-share/ardi.h	Thu Apr 15 20:34:27 1999
+++ insight-5.0-mod/gdb/rdi-share/ardi.h	Thu Aug 24 12:47:30 2000
@@ -60,6 +60,8 @@
 
 int angel_RDI_execute(PointHandle *handle);
 
+void angel_RDI_stop_request(void);
+
 int angel_RDI_step(unsigned ninstr, PointHandle *handle);
 
 int angel_RDI_info(unsigned type, ARMword *arg1, ARMword *arg2);
diff -Naur insight-5.0/gdb/remote-rdi.c insight-5.0-mod/gdb/remote-rdi.c
--- insight-5.0/gdb/remote-rdi.c	Wed Mar  1 05:25:51 2000
+++ insight-5.0-mod/gdb/remote-rdi.c	Fri Aug 25 10:44:03 2000
@@ -972,6 +972,12 @@
       return TARGET_SIGNAL_UNKNOWN;
     }
 }
+
+static void arm_rdi_stop(void)
+{
+  angel_RDI_stop_request();
+}
+
 
 /* Define the target operations structure.  */
 
@@ -987,6 +993,7 @@
   arm_rdi_ops.to_detach = arm_rdi_detach;
   arm_rdi_ops.to_resume = arm_rdi_resume;
   arm_rdi_ops.to_wait = arm_rdi_wait;
+  arm_rdi_ops.to_stop = arm_rdi_stop;
   arm_rdi_ops.to_fetch_registers = arm_rdi_fetch_registers;
   arm_rdi_ops.to_store_registers = arm_rdi_store_registers;
   arm_rdi_ops.to_prepare_to_store = arm_rdi_prepare_to_store;