BaseLib Ia32 InternalSwitchStack.S has no matched InternalSwitchStack.nasm. Use ObjDump to verify the output object files be same.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming....@intel.com> --- MdePkg/Library/BaseLib/BaseLib.inf | 3 +- .../Library/BaseLib/Ia32/InternalSwitchStack.nasm | 47 ++++++++++++++++++++++ 2 files changed, 49 insertions(+), 1 deletion(-) create mode 100644 MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.nasm diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 46a8c86..1ffe870 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -1,7 +1,7 @@ ## @file # Base Library implementation. # -# Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> +# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR> # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> # Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR> # @@ -410,6 +410,7 @@ Ia32/InternalSwitchStack.c | MSFT Ia32/InternalSwitchStack.c | INTEL Ia32/InternalSwitchStack.S | GCC + Ia32/InternalSwitchStack.nasm | GCC Ia32/Non-existing.c Unaligned.c X86WriteIdtr.c diff --git a/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.nasm b/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.nasm new file mode 100644 index 0000000..3da341c --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.nasm @@ -0,0 +1,47 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> +; Portions copyright (c) 2011, Apple Inc. All rights reserved.<BR> +; 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: +; +; InternalSwitchStack.nasm +; +; Abstract: +; +; Implementation of a stack switch on IA-32. +; +;------------------------------------------------------------------------------ + + SECTION .text + +;------------------------------------------------------------------------------ +; VOID +; EFIAPI +; InternalSwitchStack ( +; IN SWITCH_STACK_ENTRY_POINT EntryPoint, +; IN VOID *Context1, OPTIONAL +; IN VOID *Context2, OPTIONAL +; IN VOID *NewStack +; ); +;------------------------------------------------------------------------------ +global ASM_PFX(InternalSwitchStack) +ASM_PFX(InternalSwitchStack): + push ebp + mov ebp, esp + + mov esp, [ebp + 20] ; switch stack + sub esp, 8 + mov eax, [ebp + 16] + mov [esp + 4], eax + mov eax, [ebp + 12] + mov [esp], eax + push 0 ; keeps gdb from unwinding stack + jmp dword [ebp + 8] ; call and never return -- 2.8.0.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
