[mirror_edk2.git] / OvmfPkg / Sec / X64 / SecEntry.S

#      TITLE   SecEntry.asm

#------------------------------------------------------------------------------
#*
#*   Copyright 2006 - 2009, Intel Corporation
#*   All rights reserved. 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.
#*
#*    CpuAsm.asm
#*
#*   Abstract:
#*
#------------------------------------------------------------------------------


#include "SecMain.h"

#EXTERN ASM_PFX(SecCoreStartupWithStack)

#
#  SecCore Entry Point
#
#  Processor is in flat protected mode
#
#  @param  ESI  Pointer to SEC Core Entry Point (this function)
#  @param  EDI  Pointer to PEI Core Entry Point
#  @param  EBP  Pointer to the start of the Boot Firmware Volume
#
#  @return None
#
#
ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
ASM_PFX(_ModuleEntryPoint):

    #
    # Load temporary stack top at very low memory.  The C code
    # can reload to a better address.
    #
    movq    $INITIAL_TOP_OF_STACK, %rsp 
    nop

    #
    # Setup parameters and call SecCoreStartupWithStack
    #   rcx: BootFirmwareVolumePtr
    #   rdx: SecCoreEntryPoint
    #   r8:  PeiCoreEntryPoint
    #   r9:  TopOfCurrentStack
    #
    movq    %rbp, %rcx 
    movq    %rsi, %rdx
    movq    %rdi, %r8
    movq    %rsp, %r9
    call    ASM_PFX(SecCoreStartupWithStack)
Commit	Line	Data
49ba9447	1	# TITLE SecEntry.asm
	2
	3	#------------------------------------------------------------------------------
	4	#*
	5	#* Copyright 2006 - 2009, Intel Corporation
	6	#* All rights reserved. This program and the accompanying materials
	7	#* are licensed and made available under the terms and conditions of the BSD License
	8	#* which accompanies this distribution. The full text of the license may be found at
	9	#* http://opensource.org/licenses/bsd-license.php
	10	#*
	11	#* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
	12	#* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
	13	#*
	14	#* CpuAsm.asm
	15	#*
	16	#* Abstract:
	17	#*
	18	#------------------------------------------------------------------------------
	19
	20
	21	#include "SecMain.h"
	22
	23	#EXTERN ASM_PFX(SecCoreStartupWithStack)
	24
	25	#
	26	# SecCore Entry Point
	27	#
	28	# Processor is in flat protected mode
	29	#
	30	# @param ESI Pointer to SEC Core Entry Point (this function)
	31	# @param EDI Pointer to PEI Core Entry Point
	32	# @param EBP Pointer to the start of the Boot Firmware Volume
	33	#
	34	# @return None
	35	#
	36	#
49ba9447	37	ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
	38	ASM_PFX(_ModuleEntryPoint):
	39
	40	#
	41	# Load temporary stack top at very low memory. The C code
	42	# can reload to a better address.
	43	#
16e864a2	44	movq $INITIAL_TOP_OF_STACK, %rsp
49ba9447	45	nop
	46
	47	#
	48	# Setup parameters and call SecCoreStartupWithStack
	49	# rcx: BootFirmwareVolumePtr
	50	# rdx: SecCoreEntryPoint
	51	# r8: PeiCoreEntryPoint
	52	# r9: TopOfCurrentStack
	53	#
16e864a2	54	movq %rbp, %rcx
	55	movq %rsi, %rdx
	56	movq %rdi, %r8
	57	movq %rsp, %r9
49ba9447	58	call ASM_PFX(SecCoreStartupWithStack)
49ba9447	59