ntoskrnl/ke/amd64/boot.S

   1 /*
   2  * FILE:            ntoskrnl/ke/i386/boot.S
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PURPOSE:         FreeLDR Wrapper Bootstrap Code and Bootstrap Trampoline
   5  * PROGRAMMER:      Timo Kreuzer (timo.kreuzer@reactos.org)
   6  */
   7
   8 /* INCLUDES ******************************************************************/
   9
  10 #include <asm.inc>
  11 #include <ksamd64.inc>
  12
  13 EXTERN KiSystemStartupBootStack:PROC
  14
  15 /* GLOBALS *******************************************************************/
  16
  17
  18 /* FUNCTIONS *****************************************************************/
  19
  20 .code64
  21
  22 /**
  23  * VOID
  24  * KiSwitchToBootStack(
  25  *     IN ULONG_PTR InitialStack<rcx>)
  26  */
  27 PUBLIC KiSwitchToBootStack
  28 .PROC KiSwitchToBootStack
  29
  30     /* Setup the new stack */
  31     mov ax, HEX(18)
  32     mov ss, ax
  33     mov rsp, rcx
  34     // Note: 8 bytes extra to compensate for the missing return address on
  35     // the stack. On function entry the stack is unaligned by 8!!
  36     sub rsp, HEX(308) // FIXME
  37     .ENDPROLOG
  38
  39     jmp KiSystemStartupBootStack
  40
  41 .ENDP
  42
  43 END
  44