reactos/ntoskrnl/ps/i386/continue.c

   1 /* $Id: continue.c,v 1.2 2004/07/02 01:23:26 royce Exp $
   2  *
   3  * COPYRIGHT:              See COPYING in the top level directory
   4  * PROJECT:                ReactOS kernel
   5  * FILE:                   ntoskrnl/ps/i386/continue.c
   6  * PURPOSE:                i386 implementation of NtContinue()
   7  * PROGRAMMER:             Royce Mitchell III, kjk_hyperion
   8  * REVISION HISTORY:
   9  *               29/06/04: Created
  10  */
  11
  12 /* INCLUDES ****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15 #include <internal/ke.h>
  16 #include <internal/ob.h>
  17 #include <internal/ps.h>
  18 #include <internal/ob.h>
  19 #include <internal/pool.h>
  20 #include <ntos/minmax.h>
  21 #include <internal/ldr.h>
  22 #include <rosrtl/string.h>
  23
  24 #define NDEBUG
  25 #include <internal/debug.h>
  26
  27 VOID
  28 FASTCALL
  29 KeRosTrapReturn ( PKTRAP_FRAME TrapFrame, PKTRAP_FRAME PrevTrapFrame );
  30
  31 VOID STDCALL
  32 KeRosDumpStackFrames ( PULONG Frame, ULONG FrameCount );
  33
  34 /*
  35  * @implemented
  36  */
  37 NTSTATUS STDCALL
  38 NtContinue (
  39         IN PCONTEXT Context,
  40         IN BOOLEAN TestAlert)
  41 {
  42         PKTRAP_FRAME TrapFrame = KeGetCurrentThread()->TrapFrame;
  43         PKTRAP_FRAME PrevTrapFrame = (PKTRAP_FRAME)TrapFrame->Edx;
  44
  45         DPRINT1("NtContinue: Context: Eip=0x%x, Esp=0x%x\n", Context->Eip, Context->Esp );
  46         PULONG Frame = 0;
  47         __asm__("mov %%ebp, %%ebx" : "=b" (Frame) : );
  48         DbgPrint ( "NtContinue(): Ebp=%x, prev/TF=%x/%x\n", Frame, Frame[0], TrapFrame );
  49         KeRosDumpStackFrames(NULL,5);
  50
  51         if ( Context == NULL )
  52         {
  53                 DPRINT1("NtContinue called with NULL Context\n");
  54                 return STATUS_INVALID_PARAMETER;
  55         }
  56
  57         if ( TrapFrame == NULL )
  58         {
  59                 CPRINT("NtContinue called but TrapFrame was NULL\n");
  60                 KEBUGCHECK(0);
  61         }
  62
  63         /*
  64         * Copy the supplied context over the register information that was saved
  65         * on entry to kernel mode, it will then be restored on exit
  66         * FIXME: Validate the context
  67         */
  68         KeContextToTrapFrame ( Context, TrapFrame );
  69
  70         KeRosTrapReturn ( TrapFrame, PrevTrapFrame );
  71
  72         return STATUS_SUCCESS; /* this doesn't actually happen b/c KeRosTrapReturn() won't return */
  73 }