[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / BaseLib / X64 / EnablePaging64.S

#------------------------------------------------------------------------------\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
#   EnablePaging64.S\r
#\r
# Abstract:\r
#\r
#   AsmEnablePaging64 function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
\r
#include <EdkIIGlueBase.h>\r
#------------------------------------------------------------------------------\r
# VOID\r
# EFIAPI\r
# InternalX86EnablePaging64 (\r
#   IN      UINT16                    Cs,			%rdi\r
#   IN      UINT64                    EntryPoint,		%rsi\r
#   IN      UINT64                    Context1,  OPTIONAL	%rdx\r
#   IN      UINT64                    Context2,  OPTIONAL	%rcx\r
#   IN      UINT64                    NewStack			%r8\r
#   );\r
#------------------------------------------------------------------------------\r
.global ASM_PFX(InternalX86EnablePaging64)\r
ASM_PFX(InternalX86EnablePaging64):\r
    cli    \r
    pop    %rax\r
    callq  Base\r
Base:\r
    addl   $(L1-Base),(%rsp)\r
    mov    %cr4,%rax\r
    or     $0x20,%al\r
    mov    %rax,%cr4\r
    mov    $0xc0000080,%ecx\r
    rdmsr  \r
    or     $0x1,%ah\r
    wrmsr  \r
    mov    %cr0,%rax\r
    bts    $0x1f,%eax\r
    mov    %rax,%cr0\r
    lret   \r
L1:\r
    addr32 mov (%esp),%rbx\r
    addr32 mov 0x8(%esp),%rcx\r
    addr32 mov 0x10(%esp),%rdx\r
    addr32 mov 0x18(%esp),%rsp\r
    add    $-0x20,%rsp\r
    callq  *%rbx\r
    jmp    .\r
Commit	Line	Data
b341712e	1	#------------------------------------------------------------------------------\r
	2	#\r
	3	# Copyright (c) 2006, Intel Corporation\r
	4	# All rights reserved. This program and the accompanying materials\r
	5	# are licensed and made available under the terms and conditions of the BSD License\r
	6	# which accompanies this distribution. The full text of the license may be found at\r
	7	# http://opensource.org/licenses/bsd-license.php\r
	8	#\r
	9	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	#\r
	12	# Module Name:\r
	13	#\r
	14	# EnablePaging64.S\r
	15	#\r
	16	# Abstract:\r
	17	#\r
	18	# AsmEnablePaging64 function\r
	19	#\r
	20	# Notes:\r
	21	#\r
	22	#------------------------------------------------------------------------------\r
	23	\r
	24	#include <EdkIIGlueBase.h>\r
	25	#------------------------------------------------------------------------------\r
	26	# VOID\r
	27	# EFIAPI\r
	28	# InternalX86EnablePaging64 (\r
	29	# IN UINT16 Cs, %rdi\r
	30	# IN UINT64 EntryPoint, %rsi\r
	31	# IN UINT64 Context1, OPTIONAL %rdx\r
	32	# IN UINT64 Context2, OPTIONAL %rcx\r
	33	# IN UINT64 NewStack %r8\r
	34	# );\r
	35	#------------------------------------------------------------------------------\r
	36	.global ASM_PFX(InternalX86EnablePaging64)\r
	37	ASM_PFX(InternalX86EnablePaging64):\r
	38	cli \r
	39	pop %rax\r
	40	callq Base\r
	41	Base:\r
	42	addl $(L1-Base),(%rsp)\r
	43	mov %cr4,%rax\r
	44	or $0x20,%al\r
	45	mov %rax,%cr4\r
	46	mov $0xc0000080,%ecx\r
	47	rdmsr \r
	48	or $0x1,%ah\r
	49	wrmsr \r
	50	mov %cr0,%rax\r
	51	bts $0x1f,%eax\r
	52	mov %rax,%cr0\r
	53	lret \r
	54	L1:\r
	55	addr32 mov (%esp),%rbx\r
	56	addr32 mov 0x8(%esp),%rcx\r
	57	addr32 mov 0x10(%esp),%rdx\r
	58	addr32 mov 0x18(%esp),%rsp\r
	59	add $-0x20,%rsp\r
	60	callq *%rbx\r
	61	jmp .\r