From 981b99faf208e2c7f6e2b83d73e1b89b669112ee Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 10 Aug 1999 16:41:44 +0000
Subject: Patch from Eric Valette <valette@crf.canon.fr> and Emmanuel Raguet
 <raguet@crf.canon.fr>:

    - the dec21140 driver code has been hardened (various bug fixed) Emmanuel,
    - bug in the mcp750 init code have been fixed (interrupt stack/initial
      stack initialization), BSS correctly cleared (Eric V)
    - remote debugging over TCP/IP is nearly complete (berakpoints,
      backtrace, variables,...) (Eric V),
    - exception handling code has also been improved in order to fully
      support RDBG requirements (Eric V),
---
 c/src/librdbg/src/_servtgt.c | 63 +++-----------------------------------------
 1 file changed, 4 insertions(+), 59 deletions(-)

(limited to 'c/src/librdbg/src/_servtgt.c')

diff --git a/c/src/librdbg/src/_servtgt.c b/c/src/librdbg/src/_servtgt.c
index 184415a1e2..b58ac0e676 100644
--- a/c/src/librdbg/src/_servtgt.c
+++ b/c/src/librdbg/src/_servtgt.c
@@ -1,6 +1,7 @@
 /*
  ============================================================================
- _SERVTGT 
+ _SERVTGT
+ $Id$
  ============================================================================
 */
 
@@ -17,9 +18,6 @@
 #include <assert.h>
 #include <rtems/score/cpu.h>
 
-extern void rtems_exception_prologue_50();
-
-
 #ifdef DDEBUG
 #define Ptrace	TgtDbgPtrace
 #else
@@ -34,8 +32,6 @@ rtems_id wakeupEventSemId;
 
 CPU_Exception_frame Idle_frame;
 
-cpuExcHandlerType old_currentExcHandler;
-
 /* -----------------------------------------------------------------
    TgtRealPtrace - lowest level ptrace() wrapper
    ----------------------------------------------------------------- */
@@ -47,43 +43,6 @@ TgtRealPtrace(int req, PID aid, char* addr, int d, void* addr2)
 }
 
 
-/* -----------------------------------------------------------------
-   Maping of hardware exceptions into Unix-like signal numbers.
-   It is identical to the one used by the PM and the AM.
-   ----------------------------------------------------------------- */
-
-    int
-ExcepToSig (int excep)
-{
-    switch (excep) {
-      
-    case I386_EXCEPTION_MATH_COPROC_UNAVAIL: 
-    case I386_EXCEPTION_I386_COPROC_SEG_ERR: 
-    case I386_EXCEPTION_FLOAT_ERROR: 
-    case I386_EXCEPTION_BOUND: 
-	return SIGFPE;
-
-    case I386_EXCEPTION_DEBUG: 
-    case I386_EXCEPTION_BREAKPOINT: 
-    case I386_EXCEPTION_ENTER_RDBG: 
-	return SIGTRAP;
-
-    case I386_EXCEPTION_OVERFLOW: 
-    case I386_EXCEPTION_DIVIDE_BY_ZERO:
-    case I386_EXCEPTION_ILLEGAL_INSTR:  
-	return SIGILL;
-
-    case I386_EXCEPTION_SEGMENT_NOT_PRESENT:
-    case I386_EXCEPTION_STACK_SEGMENT_FAULT:
-    case I386_EXCEPTION_GENERAL_PROT_ERR: 
-    case I386_EXCEPTION_PAGE_FAULT: 
-	return SIGSEGV;
-
-    default:
-	break;
-    }
-    return SIGKILL;
-}
 
 /* -----------------------------------------------------------------------
    TgtChange() is called when the system stops.
@@ -128,7 +87,7 @@ rtems_task eventTask( rtems_task_argument pid)
 
     CheckForSingleStep(ctx->ctx);
 
-    TgtChange(pid, ctx->ctx,STS_MAKESIG(ExcepToSig(ctx->ctx->idtIndex)));
+    TgtChange(pid, ctx->ctx,STS_MAKESIG(ExcepToSig(ctx)));
       
   }
 }
@@ -162,9 +121,6 @@ Boolean TgtAttach(
   rtems_name task_name;
   rtems_status_code status;
   rtems_id debugId;
-  interrupt_gate_descriptor	 *currentIdtEntry;
-  unsigned			 limit;
-  unsigned			 level;
   
   errno = 0;
 
@@ -177,19 +133,8 @@ Boolean TgtAttach(
   TgtCreateNew(pid, conn_idx, 0, NULL, False);
 
 
-  /*
-   *  Connect the Exception used to debug
-   */
-  i386_get_info_from_IDTR (&currentIdtEntry, &limit);
+  connect_rdbg_exception();
   
-  _CPU_ISR_Disable(level);
-  create_interrupt_gate_descriptor (&currentIdtEntry[50], rtems_exception_prologue_50);
-  _CPU_ISR_Enable(level);
-
-  old_currentExcHandler = _currentExcHandler;
-  _currentExcHandler = BreakPointExcHdl ;
-
-
   /*
    * Create the attach debuger task
    */
-- 
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