diff options
Diffstat (limited to 'OldMdePkg/Library/BaseLib/X64/SwitchStack.S')
| -rw-r--r-- | OldMdePkg/Library/BaseLib/X64/SwitchStack.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseLib/X64/SwitchStack.S b/OldMdePkg/Library/BaseLib/X64/SwitchStack.S new file mode 100644 index 0000000000..85cdb4306d --- /dev/null +++ b/OldMdePkg/Library/BaseLib/X64/SwitchStack.S @@ -0,0 +1,44 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2006, 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 +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# Module Name: +# +# SwitchStack.S +# +# Abstract: +# +#------------------------------------------------------------------------------ + + +#------------------------------------------------------------------------------ +# Routine Description: +# +# Routine for switching stacks with 1 parameter +# +# 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. +# +# Returns: +# +# None +# +#------------------------------------------------------------------------------ +.global _InternalSwitchStack; +_InternalSwitchStack: + mov %rcx, %rax + mov %rdx, %rcx + mov %r8, %rdx + lea -0x20(%r9), %rsp + call *%rax |