diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-06-28 16:47:23 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-06-28 16:47:23 +0000 |
| commit | bb89ec1a7ec2f8d35033df9e47b3604925da3bd3 (patch) | |
| tree | 32d38e02ccab98dbac4c3014a12ac365775e8eb3 /EmulatorPkg/Sec/Ia32 | |
| parent | d3e0289ccf641481f2cbdcbb0d5868c393b7edbb (diff) | |
| download | edk2-platforms-bb89ec1a7ec2f8d35033df9e47b3604925da3bd3.tar.xz | |
InOsEmuPkg: Rename package to EmulatorPkg & Sec to Host
* Rename InOsEmuPkg to EmulatorPkg
* Rename Unix/Sec to Unix/Host
Signed-off-by: jljusten
Reviewed-by: andrewfish
Reviewed-by: geekboy15a
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11918 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EmulatorPkg/Sec/Ia32')
| -rw-r--r-- | EmulatorPkg/Sec/Ia32/SwitchRam.S | 95 | ||||
| -rw-r--r-- | EmulatorPkg/Sec/Ia32/TempRam.c | 65 |
2 files changed, 160 insertions, 0 deletions
diff --git a/EmulatorPkg/Sec/Ia32/SwitchRam.S b/EmulatorPkg/Sec/Ia32/SwitchRam.S new file mode 100644 index 0000000000..81e478be82 --- /dev/null +++ b/EmulatorPkg/Sec/Ia32/SwitchRam.S @@ -0,0 +1,95 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2007, Intel Corporation. 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:
+#
+# Stack.asm
+#
+# Abstract:
+#
+# Switch the stack from temporary memory to permenent memory.
+#
+#------------------------------------------------------------------------------
+
+ .text
+
+
+//------------------------------------------------------------------------------
+// VOID
+// EFIAPI
+// SecSwitchStack (
+// UINT32 TemporaryMemoryBase,
+// UINT32 PermenentMemoryBase
+// )//
+//------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(SecSwitchStack)
+ASM_PFX(SecSwitchStack):
+#
+# Save three register: eax, ebx, ecx
+#
+ push %eax
+ push %ebx
+ push %ecx
+ push %edx
+
+#
+# !!CAUTION!! this function address's is pushed into stack after
+# migration of whole temporary memory, so need save it to permenent
+# memory at first!
+#
+
+ movl 20(%esp), %ebx # Save the first parameter
+ movl 24(%esp), %ecx # Save the second parameter
+
+#
+# Save this function's return address into permenent memory at first.
+# Then, Fixup the esp point to permenent memory
+#
+
+ movl %esp, %eax
+ subl %ebx, %eax
+ addl %ecx, %eax
+ movl (%esp), %edx # copy pushed register's value to permenent memory
+ movl %edx, (%eax)
+ movl 4(%esp), %edx
+ movl %edx, 4(%eax)
+ movl 8(%esp), %edx
+ movl %edx, 8(%eax)
+ movl 12(%esp), %edx
+ movl %edx, 12(%eax)
+ movl 16(%esp), %edx
+ movl %edx, 16(%eax)
+ movl %eax, %esp # From now, esp is pointed to permenent memory
+
+#
+# Fixup the ebp point to permenent memory
+#
+#ifndef __APPLE__
+ movl %ebp, %eax
+ subl %ebx, %eax
+ addl %ecx, %eax
+ movl %eax, %ebp # From now, ebp is pointed to permenent memory
+
+#
+# Fixup callee's ebp point for PeiDispatch
+#
+ movl (%ebp), %eax
+ subl %ebx, %eax
+ addl %ecx, %eax
+ movl %eax, (%ebp) # From now, Temporary's PPI caller's stack is in permenent memory
+#endif
+
+ pop %edx
+ pop %ecx
+ pop %ebx
+ pop %eax
+ ret
+
diff --git a/EmulatorPkg/Sec/Ia32/TempRam.c b/EmulatorPkg/Sec/Ia32/TempRam.c new file mode 100644 index 0000000000..525fb95d48 --- /dev/null +++ b/EmulatorPkg/Sec/Ia32/TempRam.c @@ -0,0 +1,65 @@ +/*++ @file + Temp RAM PPI + +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. + +**/ + +#include <PiPei.h> +#include <Library/DebugLib.h> +#include <Library/BaseMemoryLib.h> + +#include <Ppi/TemporaryRamSupport.h> + +VOID +EFIAPI +SecSwitchStack ( + UINT32 TemporaryMemoryBase, + UINT32 PermenentMemoryBase + ); + + +EFI_STATUS +EFIAPI +SecTemporaryRamSupport ( + IN CONST EFI_PEI_SERVICES **PeiServices, + IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase, + IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase, + IN UINTN CopySize + ) +{ + // + // Migrate the whole temporary memory to permenent memory. + // + CopyMem ( + (VOID*)(UINTN)PermanentMemoryBase, + (VOID*)(UINTN)TemporaryMemoryBase, + CopySize + ); + + // + // SecSwitchStack function must be invoked after the memory migration + // immediatly, also we need fixup the stack change caused by new call into + // permenent memory. + // + SecSwitchStack ((UINT32) TemporaryMemoryBase, (UINT32) PermanentMemoryBase); + + // + // We need *not* fix the return address because currently, + // The PeiCore is excuted in flash. + // + + // + // Simulate to invalid temporary memory, terminate temporary memory + // + //ZeroMem ((VOID*)(UINTN)TemporaryMemoryBase, CopySize); + + return EFI_SUCCESS; +} |