#------------------------------------------------------------------------------
#
-# Copyright (c) 2006, Intel Corporation
+# Copyright (c) 2006 - 2008, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
#------------------------------------------------------------------------------
# Routine Description:
#
-# Routine for switching stacks with 1 parameter
+# Routine for switching stacks with 2 parameters
#
# Arguments:
#
-# (rdi) EntryPoint - Entry point with new stack.
-# (rsi) Context1 - Parameter1 for entry point.
-# (rdx) Context2 - Parameter2 for entry point.
-# (rcx) NewStack - Pointer to new stack.
+# (rcx) EntryPoint - Entry point with new stack.
+# (rdx) Context1 - Parameter1 for entry point.
+# (r8) Context2 - Parameter2 for entry point.
+# (r9) NewStack - Pointer to new stack.
#
# Returns:
#
mov %rcx, %rax
mov %rdx, %rcx
mov %r8, %rdx
+ #\r
+ # Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack,\r
+ # in case the callee wishes to spill them.\r
+ #
lea -0x20(%r9), %rsp
call *%rax
;------------------------------------------------------------------------------\r
;\r
-; Copyright (c) 2006, Intel Corporation\r
+; Copyright (c) 2006 - 2008, Intel Corporation\r
; All rights reserved. This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution. The full text of the license may be found at\r
;------------------------------------------------------------------------------\r
; Routine Description:\r
;\r
-; Routine for switching stacks with 1 parameter\r
+; Routine for switching stacks with 2 parameters\r
;\r
; Arguments:\r
;\r
; (rcx) EntryPoint - Entry point with new stack.\r
-; (rdx) Context - Parameter for entry point.\r
+; (rdx) Context1 - Parameter1 for entry point.\r
; (r8) Context2 - Parameter2 for entry point.\r
; (r9) NewStack - Pointer to new stack.\r
;\r
mov rax, rcx\r
mov rcx, rdx\r
mov rdx, r8\r
+ ;\r
+ ; Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack,\r
+ ; in case the callee wishes to spill them.\r
+ ;\r
lea rsp, [r9 - 20h]\r
call rax\r
InternalSwitchStack ENDP\r