diff options
Diffstat (limited to 'CorebootModulePkg/SecCore/Ia32/Stack.S')
-rw-r--r-- | CorebootModulePkg/SecCore/Ia32/Stack.S | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/CorebootModulePkg/SecCore/Ia32/Stack.S b/CorebootModulePkg/SecCore/Ia32/Stack.S deleted file mode 100644 index 6a8e0e4b15..0000000000 --- a/CorebootModulePkg/SecCore/Ia32/Stack.S +++ /dev/null @@ -1,78 +0,0 @@ -#------------------------------------------------------------------------------ -# -# Copyright (c) 2013, 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. -# -# Abstract: -# -# Switch the stack from temporary memory to permanent memory.
-# -#------------------------------------------------------------------------------ - - -#------------------------------------------------------------------------------ -# VOID -# EFIAPI -# SecSwitchStack ( -# UINT32 TemporaryMemoryBase, -# UINT32 PermenentMemoryBase -# )# -#------------------------------------------------------------------------------ -ASM_GLOBAL ASM_PFX (SecSwitchStack) -ASM_PFX(SecSwitchStack): - # - # Save standard registers so they can be used to change stack - # - pushl %eax - pushl %ebx - pushl %ecx - pushl %edx - - # - # !!CAUTION!! this function address's is pushed into stack after - # migration of whole temporary memory, so need save it to permanent
- # 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 permanent memory at first.
- # Then, Fixup the esp point to permanent memory
- # - movl %esp, %eax - subl %ebx, %eax - addl %ecx, %eax - movl 0(%esp), %edx # copy pushed register's value to permanent memory
- movl %edx, 0(%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 # Update this function's return address into permanent memory
- movl %edx, 16(%eax) - movl %eax, %esp # From now, esp is pointed to permanent memory
- - # - # Fixup the ebp point to permanent memory
- # - movl %ebp, %eax - subl %ebx, %eax - addl %ecx, %eax - movl %eax, %ebp # From now, ebp is pointed to permanent memory
- - popl %edx - popl %ecx - popl %ebx - popl %eax - ret - - |