//       TITLE("Win32 Thunks")


// Copyright (c) 1993  IBM Corporation

// Module Name:

//    thunk.s

// Abstract:

//    This module implements Win32 functions that must be written in
//    macro.

// Author:

//    Curt Fawcett (crf)  22-Sept-1993

// Revision History:

//    Curt Fawcett (crf)  19-Jan-1994           Removed Register names
//                                              as requested


// Parameter Register Usage:

// r.3 - Current time low part
// r.4 - Current time high part
// r.5 - Boot time low part
// r.6 - Boot time high part

// r.4 - New stack address
// r.5 - Exit code

// Local Register Usage:

// r.7 - Result low part
// r.8 - Result high part
// r.9 - Temporary high part
// r.10 - Temporary low part
// r.11 - Temporary low part
// r.12 - Divide multiplier value


#include "ksppc.h"

// Define external entry points

        .globl ..FreeStackAndTerminate



// VOID
// SwitchStackThenTerminate(
//     IN PVOID StackLimit,
//     IN PVOID NewStack,
//     IN DWORD ExitCode
//     )


// Routine Description:

//     This API is called during thread termination to delete a
//     thread's stack, switch to a stack in the thread's TEB, and then
//     terminate.

// Arguments:

//     StackLimit (r.3) - Supplies address of the stack to be freed.

//     NewStack (r.4) - Supplies an address within the terminating
//                      threads TEB that is to be used as its
//                      temporary stack while exiting.

//     ExitCode (r.5) - Supplies the termination status that the
//                      thread is to exit with.

// Return Value:

//     None.



        LEAF_ENTRY(SwitchStackThenTerminate)

        mr      r.sp,r.4                // Set new stack address
        mr      r.4,r.5                 // Move exit code
        b       ..FreeStackAndTerminate // Jump to finish

        LEAF_EXIT(SwitchStackThenTerminate)