audk/MdeModulePkg/Universal/EbcDxe/Ia32/EbcLowLevel.S

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#/** @file
#
# Low level IA32 specific EBC support routines.
#
# Copyright (c) 2007 - 2011, 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.
#
#**/
ASM_GLOBAL ASM_PFX(CopyMem)
ASM_GLOBAL ASM_PFX(EbcInterpret)
ASM_GLOBAL ASM_PFX(ExecuteEbcImageEntryPoint)
ASM_GLOBAL ASM_PFX(EbcLLCALLEXNative)
ASM_PFX(EbcLLCALLEXNative):
push %ebp
push %ebx
mov %esp,%ebp
mov 0xc(%esp),%ecx
mov 0x14(%esp),%eax
mov 0x10(%esp),%edx
sub %edx,%eax
sub %eax,%esp
mov %esp,%ebx
push %ecx
push %eax
push %edx
push %ebx
call ASM_PFX(CopyMem)
pop %eax
pop %eax
pop %eax
pop %ecx
call *%ecx
mov %ebp,%esp
mov %ebp,%esp
pop %ebx
pop %ebp
ret
ASM_GLOBAL ASM_PFX(EbcLLEbcInterpret)
ASM_PFX(EbcLLEbcInterpret):
# Construct new stack
push %ebp
mov %esp, %ebp
push %esi
push %edi
sub $0x40, %esp
push %eax
mov %ebp, %esi
add $0x8, %esi
mov %esp, %edi
add $0x4, %edi
mov $0x10, %ecx
rep movsd
# call C-code
call ASM_PFX(EbcInterpret)
add $0x44, %esp
pop %edi
pop %esi
pop %ebp
ret
ASM_GLOBAL ASM_PFX(EbcLLExecuteEbcImageEntryPoint)
ASM_PFX(EbcLLExecuteEbcImageEntryPoint):
# Construct new stack
mov %eax, -0xC(%esp)
mov 0x4(%esp), %eax
mov %eax, -0x8(%esp)
mov 0x8(%esp), %eax
mov %eax, -0x4(%esp)
# call C-code
sub $0xC, %esp
call ASM_PFX(ExecuteEbcImageEntryPoint)
add $0xC, %esp
ret