diff options
Diffstat (limited to 'UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S')
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S b/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S deleted file mode 100644 index 4d0cd9ac6f..0000000000 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S +++ /dev/null @@ -1,178 +0,0 @@ -#------------------------------------------------------------------------------
-#
-# Copyright (c) 2009 - 2016, 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.
-#
-# Module Name:
-#
-# SmiException.S
-#
-# Abstract:
-#
-# Exception handlers used in SM mode
-#
-#------------------------------------------------------------------------------
-
-ASM_GLOBAL ASM_PFX(gcStmPsd)
-
-ASM_GLOBAL ASM_PFX(SmmStmExceptionHandler)
-ASM_GLOBAL ASM_PFX(SmmStmSetup)
-ASM_GLOBAL ASM_PFX(SmmStmTeardown)
-
-.equ CODE_SEL, 0x38
-.equ DATA_SEL, 0x20
-.equ TR_SEL, 0x40
-
-.equ MSR_IA32_MISC_ENABLE, 0x1A0
-.equ MSR_EFER, 0x0c0000080
-.equ MSR_EFER_XD, 0x0800
-
- .data
-
-#
-# This structure serves as a template for all processors.
-#
-ASM_PFX(gcStmPsd):
- .ascii "TXTPSSIG"
- .word PSD_SIZE
- .word 1 # Version
- .long 0 # LocalApicId
- .byte 0xF # Cr4Pse;Cr4Pae;Intel64Mode;ExecutionDisableOutsideSmrr
- .byte 0 # BIOS to STM
- .byte 0 # STM to BIOS
- .byte 0
- .word CODE_SEL
- .word DATA_SEL
- .word DATA_SEL
- .word DATA_SEL
- .word TR_SEL
- .word 0
- .quad 0 # SmmCr3
- .quad ASM_PFX(_OnStmSetup)
- .quad ASM_PFX(_OnStmTeardown)
- .quad 0 # SmmSmiHandlerRip - SMM guest entrypoint
- .quad 0 # SmmSmiHandlerRsp
- .quad 0
- .long 0
- .long 0x80010100 # RequiredStmSmmRevId
- .quad ASM_PFX(_OnException)
- .quad 0 # ExceptionStack
- .word DATA_SEL
- .word 0x1F # ExceptionFilter
- .long 0
- .quad 0
- .quad 0 # BiosHwResourceRequirementsPtr
- .quad 0 # AcpiRsdp
- .byte 0 # PhysicalAddressBits
-.equ PSD_SIZE, . - ASM_PFX(gcStmPsd)
-
- .text
-#------------------------------------------------------------------------------
-# SMM Exception handlers
-#------------------------------------------------------------------------------
-
-ASM_GLOBAL ASM_PFX(_OnException)
-ASM_PFX(_OnException):
- movq %rsp, %rcx
- subq $0x28, %rsp
- call ASM_PFX(SmmStmExceptionHandler)
- addq $0x28, %rsp
- movl %eax, %ebx
- movl $4, %eax
- .byte 0xf, 0x1, 0xc1 # VMCALL
- jmp .
-
-ASM_GLOBAL ASM_PFX(_OnStmSetup)
-ASM_PFX(_OnStmSetup):
-#
-# Check XD disable bit
-#
- xorq %r8, %r8
- movabsq $ASM_PFX(gStmXdSupported), %rax
- movb (%rax), %al
- cmpb $0, %al
- jz StmXdDone1
- movl $MSR_IA32_MISC_ENABLE, %ecx
- rdmsr
- movq %rdx, %r8 # save MSR_IA32_MISC_ENABLE[63-32]
- testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34]
- jz L13
- andw $0x0FFFB, %dx # clear XD Disable bit if it is set
- wrmsr
-L13:
- movl $MSR_EFER, %ecx
- rdmsr
- orw $MSR_EFER_XD,%ax # enable NXE
- wrmsr
-StmXdDone1:
- pushq %r8
-
- subq $0x20, %rsp
- call ASM_PFX(SmmStmSetup)
- addq 0x20, %rsp
-
- movabsq $ASM_PFX(gStmXdSupported), %rax
- movb (%rax), %al
- cmpb $0, %al
- jz L14
- popq %rdx # get saved MSR_IA32_MISC_ENABLE[63-32]
- testl $BIT2, %edx
- jz L14
- movl $MSR_IA32_MISC_ENABLE, %ecx
- rdmsr
- orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM
- wrmsr
-L14:
-
- rsm
-
-ASM_GLOBAL ASM_PFX(_OnStmTeardown)
-ASM_PFX(_OnStmTeardown):
-#
-# Check XD disable bit
-#
- xorq %r8, %r8
- movabsq $ASM_PFX(gStmXdSupported), %rax
- movb (%rax), %al
- cmpb $0, %al
- jz StmXdDone2
- movl $MSR_IA32_MISC_ENABLE, %ecx
- rdmsr
- movq %rdx, %r8 # save MSR_IA32_MISC_ENABLE[63-32]
- testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34]
- jz L15
- andw $0x0FFFB, %dx # clear XD Disable bit if it is set
- wrmsr
-L15:
- movl $MSR_EFER, %ecx
- rdmsr
- orw $MSR_EFER_XD,%ax # enable NXE
- wrmsr
-StmXdDone2:
- pushq %r8
-
- subq $0x20, %rsp
- call ASM_PFX(SmmStmTeardown)
- addq $0x20, %rsp
-
- movabsq $ASM_PFX(gStmXdSupported), %rax
- movb (%rax), %al
- cmpb $0, %al
- jz L16
- popq %rdx # get saved MSR_IA32_MISC_ENABLE[63-32]
- testl $BIT2, %edx
- jz L16
- movl $MSR_IA32_MISC_ENABLE, %ecx
- rdmsr
- orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM
- wrmsr
-L16:
-
- rsm
-
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