[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / EnablePaging32.S

//\r
// Include common header file for this module.\r
//\r
#include "CommonHeader.h"\r
\r
#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   EnablePaging32.Asm\r
#\r
# Abstract:\r
#\r
#   InternalX86EnablePaging32 function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
\r
.globl ASM_PFX(InternalX86EnablePaging32)\r
\r
#------------------------------------------------------------------------------\r
# VOID\r
# EFIAPI\r
# InternalX86EnablePaging32 (\r
#   IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,\r
#   IN      VOID                      *Context1,    OPTIONAL\r
#   IN      VOID                      *Context2,    OPTIONAL\r
#   IN      VOID                      *NewStack\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(InternalX86EnablePaging32):\r
    movl    4(%esp), %ebx\r
    movl    8(%esp), %ecx\r
    movl    12(%esp), %edx\r
    pushfl\r
    pop     %edi\r
    cli\r
    movl    %cr0, %eax\r
    btsl    $31, %eax\r
    movl    16(%esp), %esp\r
    movl    %eax, %cr0\r
    push    %edi\r
    popfl\r
    push    %edx\r
    push    %ecx\r
    call    *%ebx\r
    jmp     .\r
Commit	Line	Data
e1f414b6	1	//\r
	2	// Include common header file for this module.\r
	3	//\r
	4	#include "CommonHeader.h"\r
	5	\r
	6	#------------------------------------------------------------------------------\r
	7	#\r
	8	# Copyright (c) 2006, Intel Corporation\r
	9	# All rights reserved. This program and the accompanying materials\r
	10	# are licensed and made available under the terms and conditions of the BSD License\r
	11	# which accompanies this distribution. The full text of the license may be found at\r
	12	# http://opensource.org/licenses/bsd-license.php\r
	13	#\r
	14	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	15	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	16	#\r
	17	# Module Name:\r
	18	#\r
	19	# EnablePaging32.Asm\r
	20	#\r
	21	# Abstract:\r
	22	#\r
	23	# InternalX86EnablePaging32 function\r
	24	#\r
	25	# Notes:\r
	26	#\r
	27	#------------------------------------------------------------------------------\r
	28	\r
	29	.globl ASM_PFX(InternalX86EnablePaging32)\r
	30	\r
	31	#------------------------------------------------------------------------------\r
	32	# VOID\r
	33	# EFIAPI\r
	34	# InternalX86EnablePaging32 (\r
	35	# IN SWITCH_STACK_ENTRY_POINT EntryPoint,\r
	36	# IN VOID *Context1, OPTIONAL\r
	37	# IN VOID *Context2, OPTIONAL\r
	38	# IN VOID *NewStack\r
	39	# );\r
	40	#------------------------------------------------------------------------------\r
	41	ASM_PFX(InternalX86EnablePaging32):\r
	42	movl 4(%esp), %ebx\r
	43	movl 8(%esp), %ecx\r
	44	movl 12(%esp), %edx\r
	45	pushfl\r
	46	pop %edi\r
	47	cli\r
	48	movl %cr0, %eax\r
	49	btsl $31, %eax\r
	50	movl 16(%esp), %esp\r
	51	movl %eax, %cr0\r
	52	push %edi\r
	53	popfl\r
	54	push %edx\r
	55	push %ecx\r
	56	call *%ebx\r
	57	jmp .\r