EmulatorPkg: Fix Visual Studio build for IA32 & X64
This code is untested since there is currently no 'host' component for Win32/Win64. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13633 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten
94
EmulatorPkg/Sec/Ia32/SwitchRam.asm
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94
EmulatorPkg/Sec/Ia32/SwitchRam.asm
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2007 - 2012, Intel Corporation. All rights reserved.<BR>
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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;
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; Stack.asm
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;
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; Abstract:
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;
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; Switch the stack from temporary memory to permenent memory.
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;
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;------------------------------------------------------------------------------
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.586p
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.model flat,C
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.code
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; SecSwitchStack (
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; UINT32 TemporaryMemoryBase,
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; UINT32 PermenentMemoryBase
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; );
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;------------------------------------------------------------------------------
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SecSwitchStack PROC
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;
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; Save three register: eax, ebx, ecx
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;
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push eax
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push ebx
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push ecx
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push edx
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;
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; !!CAUTION!! this function address's is pushed into stack after
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; migration of whole temporary memory, so need save it to permenent
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; memory at first!
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;
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mov ebx, [esp + 20] ; Save the first parameter
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mov ecx, [esp + 24] ; Save the second parameter
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;
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; Save this function's return address into permenent memory at first.
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; Then, Fixup the esp point to permenent memory
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;
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mov eax, esp
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sub eax, ebx
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add eax, ecx
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mov edx, dword ptr [esp] ; copy pushed register's value to permenent memory
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mov dword ptr [eax], edx
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mov edx, dword ptr [esp + 4]
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mov dword ptr [eax + 4], edx
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mov edx, dword ptr [esp + 8]
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mov dword ptr [eax + 8], edx
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mov edx, dword ptr [esp + 12]
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mov dword ptr [eax + 12], edx
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mov edx, dword ptr [esp + 16] ; Update this function's return address into permenent memory
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mov dword ptr [eax + 16], edx
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mov esp, eax ; From now, esp is pointed to permenent memory
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;
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; Fixup the ebp point to permenent memory
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;
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mov eax, ebp
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sub eax, ebx
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add eax, ecx
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mov ebp, eax ; From now, ebp is pointed to permenent memory
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;
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; Fixup callee's ebp point for PeiDispatch
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;
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mov eax, dword ptr [ebp]
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sub eax, ebx
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add eax, ecx
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mov dword ptr [ebp], eax ; From now, Temporary's PPI caller's stack is in permenent memory
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pop edx
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pop ecx
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pop ebx
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pop eax
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ret
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SecSwitchStack ENDP
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END
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@@ -3,6 +3,7 @@
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#
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# Main executable file of Unix Emulator that loads PEI core after initialization finished.
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# Portions copyright (c) 2011, Apple Inc. All rights reserved.<BR>
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# Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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@@ -26,10 +27,12 @@
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Sec.c
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[Sources.X64]
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X64/SwitchRam.asm
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X64/SwitchRam.S
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[Sources.IA32]
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Ia32/TempRam.c
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Ia32/SwitchRam.asm
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Ia32/SwitchRam.S
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[Packages]
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76
EmulatorPkg/Sec/X64/SwitchRam.asm
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76
EmulatorPkg/Sec/X64/SwitchRam.asm
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@@ -0,0 +1,76 @@
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
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; Portitions copyright (c) 2011, Apple Inc. All rights reserved.
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php.
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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;------------------------------------------------------------------------------
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EXTERN CopyMem:PROC
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EXTERN ZeroMem:PROC
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.code
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;------------------------------------------------------------------------------
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; EFI_STATUS
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; EFIAPI
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; SecTemporaryRamSupport (
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; IN CONST EFI_PEI_SERVICES **PeiServices, // %rcx
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; IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase, // %rdx
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; IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase, // %r8
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; IN UINTN CopySize // %r9
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; )
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;------------------------------------------------------------------------------
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SecTemporaryRamSupport PROC
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; Adjust callers %rbp to account for stack move
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sub rbp, rdx ; Calc offset of %rbp in Temp Memory
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add rbp, r8 ; add in permanent base to offset
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push rbp ; stack frame is for the debugger
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mov rbp, rsp
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push rdx ; Save TemporaryMemoryBase
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push r8 ; Save PermanentMemoryBase
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push r9 ; Save CopySize
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;
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; Copy all of temp RAM to permanent memory, including stack
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;
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; CopyMem (PermanentMemoryBase, TemporaryMemoryBase, CopySize);
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; %rcx, %rdx, %r8
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mov rcx, r8 ; Shift arguments
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mov r8, r9
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sub rsp, 028h ; Allocate register spill area & 16-byte align stack
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call CopyMem
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; Temp mem stack now copied to permanent location. %esp still in temp memory
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add rsp, 028h
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pop r9 ; CopySize (old stack)
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pop r8 ; PermanentMemoryBase (old stack)
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pop rdx ; TemporaryMemoryBase (old stack)
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mov rcx, rsp ; Move to new stack
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sub rcx, rdx ; Calc offset of stack in Temp Memory
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add rcx, r8 ; Calc PermanentMemoryBase address
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mov rsp, rcx ; Update stack
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; Stack now points to permanent memory
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; ZeroMem (TemporaryMemoryBase /* rcx */, CopySize /* rdx */);
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mov rcx, rdx
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mov rdx, r9
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sub rsp, 028h ; Allocate register spill area & 16-byte align stack
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call ZeroMem
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add rsp, 028h
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; This data comes off the NEW stack
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pop rbp
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ret
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SecTemporaryRamSupport ENDP
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END
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