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https://github.com/acidanthera/OpenCorePkg.git
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The CpuBreakPoint in UserMisc normally shouldn't enter dead-loop condition, instead it should break the program using abort signal. Also sets DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit by default in PcdDebugPropertyMask. As a background was a problem with fuzzing when program process falls into dead-loop condition instead of just to exit with crash
703 lines
7.8 KiB
C
703 lines
7.8 KiB
C
/** @file
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Copyright (c) 2020, PMheart. All rights reserved.
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SPDX-License-Identifier: BSD-3-Clause
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**/
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#include <Uefi.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiApplicationEntryPoint.h>
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#include <Library/DebugLib.h>
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VOID
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EFIAPI
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CpuBreakpoint (
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VOID
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)
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{
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abort ();
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}
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VOID
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EFIAPI
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CpuPause (
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VOID
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)
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{
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}
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VOID
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EFIAPI
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DisableInterrupts (
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VOID
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)
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{
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}
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VOID
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EFIAPI
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EnableInterrupts (
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VOID
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)
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{
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}
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UINT32
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AsmCpuid (
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IN UINT32 Index,
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OUT UINT32 *Eax, OPTIONAL
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OUT UINT32 *Ebx, OPTIONAL
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OUT UINT32 *Ecx, OPTIONAL
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OUT UINT32 *Edx OPTIONAL
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)
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{
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#if defined (__i386__) || defined (__x86_64__)
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UINT32 EaxVal;
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UINT32 EbxVal;
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UINT32 EcxVal;
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UINT32 EdxVal;
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EaxVal = 0;
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EbxVal = 0;
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EcxVal = 0;
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EdxVal = 0;
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asm (
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"cpuid\n"
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: "=a" (EaxVal), "=b" (EbxVal), "=c" (EcxVal), "=d" (EdxVal)
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: "0" (Index)
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);
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if (Eax != NULL) {
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*Eax = EaxVal;
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}
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if (Ebx != NULL) {
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*Ebx = EbxVal;
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}
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if (Ecx != NULL) {
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*Ecx = EcxVal;
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}
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if (Edx != NULL) {
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*Edx = EdxVal;
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}
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return Index;
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#else
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if (Eax != NULL) {
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*Eax = 0;
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}
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if (Ebx != NULL) {
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*Ebx = 0;
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}
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if (Ecx != NULL) {
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*Ecx = 0;
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}
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if (Edx != NULL) {
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*Edx = 0;
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}
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return 0;
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#endif
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}
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UINT32
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AsmCpuidEx (
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IN UINT32 Index,
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IN UINT32 SubIndex,
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OUT UINT32 *Eax, OPTIONAL
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OUT UINT32 *Ebx, OPTIONAL
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OUT UINT32 *Ecx, OPTIONAL
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OUT UINT32 *Edx OPTIONAL
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)
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{
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#if defined (__i386__) || defined (__x86_64__)
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UINT32 EaxVal;
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UINT32 EbxVal;
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UINT32 EcxVal;
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UINT32 EdxVal;
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EaxVal = 0;
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EbxVal = 0;
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EcxVal = 0;
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EdxVal = 0;
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asm (
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"cpuid\n"
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: "=a" (EaxVal), "=b" (EbxVal), "=c" (EcxVal), "=d" (EdxVal)
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: "0" (Index),
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"2" (SubIndex)
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);
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if (Eax != NULL) {
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*Eax = EaxVal;
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}
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if (Ebx != NULL) {
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*Ebx = EbxVal;
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}
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if (Ecx != NULL) {
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*Ecx = EcxVal;
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}
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if (Edx != NULL) {
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*Edx = EdxVal;
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}
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return Index;
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#else
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if (Eax != NULL) {
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*Eax = 0;
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}
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if (Ebx != NULL) {
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*Ebx = 0;
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}
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if (Ecx != NULL) {
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*Ecx = 0;
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}
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if (Edx != NULL) {
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*Edx = 0;
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}
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return 0;
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#endif
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}
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UINT32
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EFIAPI
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AsmIncrementUint32 (
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IN volatile UINT32 *Value
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)
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{
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ASSERT (FALSE);
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return 0;
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}
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UINT32
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EFIAPI
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AsmReadIntelMicrocodeRevision (
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VOID
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)
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{
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return 0;
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}
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UINTN
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EFIAPI
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AsmReadCr4 (
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VOID
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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AsmReadCs (
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VOID
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)
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{
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return 3;
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}
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UINTN
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EFIAPI
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AsmReadEflags (
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VOID
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)
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{
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return 0;
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}
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UINT64
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EFIAPI
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AsmReadMsr64 (
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IN UINT32 Index
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)
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{
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return 0;
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}
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UINT64
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EFIAPI
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AsmReadTsc (
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VOID
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)
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{
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return 0;
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}
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UINTN
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EFIAPI
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AsmWriteCr4 (
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UINTN Cr4
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)
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{
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return 0;
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}
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UINT64
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EFIAPI
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AsmWriteMsr64 (
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IN UINT32 Index,
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IN UINT64 Value
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)
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{
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return 0;
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}
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UINT64
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EFIAPI
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AsmMsrAndThenOr64 (
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IN UINT32 Index,
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IN UINT64 AndData,
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IN UINT64 OrData
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)
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{
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//
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// MSRs cannot be read at userspace level.
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//
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return 0;
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}
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VOID
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EFIAPI
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AsmDisableCache (
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VOID
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)
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{
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}
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VOID
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EFIAPI
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AsmEnableCache (
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VOID
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)
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{
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}
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VOID
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EFIAPI
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CpuFlushTlb (
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VOID
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)
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{
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}
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UINT8
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EFIAPI
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IoRead8 (
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IN UINTN Port
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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IoWrite8 (
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IN UINTN Port,
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IN UINT8 Value
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)
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{
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(void)Port;
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return Value;
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}
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UINT32
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EFIAPI
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IoRead32 (
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IN UINTN Port
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)
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{
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ASSERT ((Port & 3) == 0);
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return 0;
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}
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UINT32
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EFIAPI
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IoWrite32 (
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IN UINTN Port,
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IN UINT32 Value
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)
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{
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ASSERT ((Port & 3) == 0);
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return Value;
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}
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UINT16
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EFIAPI
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MmioAnd16 (
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IN UINTN Address,
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IN UINT16 AndData
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioAnd32 (
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IN UINTN Address,
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IN UINT16 AndData
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioAnd8 (
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IN UINTN Address,
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IN UINT8 AndData
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioAndThenOr16 (
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IN UINTN Address,
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IN UINT16 AndData,
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IN UINT16 OrData
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioAndThenOr32 (
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IN UINTN Address,
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IN UINT32 AndData,
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IN UINT32 OrData
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioAndThenOr8 (
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IN UINTN Address,
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IN UINT8 AndData,
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IN UINT8 OrData
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioBitFieldAnd16 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT16 AndData
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioBitFieldAnd32 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT32 AndData
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioBitFieldAnd8 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT8 AndData
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioBitFieldAndThenOr16 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT16 AndData,
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IN UINT16 OrData
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioBitFieldAndThenOr32 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT32 AndData,
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IN UINT32 OrData
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioBitFieldAndThenOr8 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT8 AndData,
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IN UINT8 OrData
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioBitFieldOr16 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT16 OrData
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioBitFieldOr32 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT32 OrData
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioBitFieldOr8 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT8 OrData
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioBitFieldRead16 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioBitFieldRead32 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioBitFieldRead8 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioBitFieldWrite16 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT16 Value
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioBitFieldWrite32 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT32 Value
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioBitFieldWrite8 (
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IN UINTN Address,
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IN UINTN StartBit,
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IN UINTN EndBit,
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IN UINT8 Value
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioOr16 (
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IN UINTN Address,
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IN UINT16 OrData
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioOr32 (
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IN UINTN Address,
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IN UINT32 OrData
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioOr8 (
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IN UINTN Address,
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IN UINT8 OrData
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioRead16 (
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IN UINTN Address
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioRead32 (
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IN UINTN Address
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)
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{
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return 0;
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}
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UINT8
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EFIAPI
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MmioRead8 (
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IN UINTN Address
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)
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{
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return 0;
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}
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UINT16
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EFIAPI
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MmioWrite16 (
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IN UINTN Address,
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IN UINT16 Value
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)
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{
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return 0;
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}
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UINT32
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EFIAPI
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MmioWrite32 (
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IN UINTN Address,
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IN UINT32 Value
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)
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|
{
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return 0;
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}
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UINT8
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EFIAPI
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MmioWrite8 (
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IN UINTN Address,
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IN UINT8 Value
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)
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|
{
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return 0;
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}
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|
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VOID *
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EFIAPI
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GetFirstGuidHob (
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IN CONST EFI_GUID *Guid
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)
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|
{
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return NULL;
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}
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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|
DevicePathFromHandle (
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|
IN EFI_HANDLE Handle
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)
|
|
{
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return NULL;
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}
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EFI_FILE_PROTOCOL *
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|
OcLocateRootVolume (
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IN EFI_HANDLE DeviceHandle OPTIONAL,
|
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IN EFI_DEVICE_PATH_PROTOCOL *FilePath OPTIONAL
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)
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|
{
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return NULL;
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}
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UINTN
|
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GetSerialRegisterBase (
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|
VOID
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)
|
|
{
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return 0;
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|
}
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