UefiCpuPkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / UefiCpuPkg / Library / CpuExceptionHandlerLib / CpuExceptionCommon.h

/** @file\r
  Common header file for CPU Exception Handler Library.\r
\r
  Copyright (c) 2012 - 2019, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef _CPU_EXCEPTION_COMMON_H_\r
#define _CPU_EXCEPTION_COMMON_H_\r
\r
#include <Ppi/VectorHandoffInfo.h>\r
#include <Protocol/Cpu.h>\r
#include <Library/BaseLib.h>\r
#include <Library/SerialPortLib.h>\r
#include <Library/PrintLib.h>\r
#include <Library/LocalApicLib.h>\r
#include <Library/PeCoffGetEntryPointLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/SynchronizationLib.h>\r
#include <Library/CpuExceptionHandlerLib.h>\r
\r
#define  CPU_EXCEPTION_NUM          32\r
#define  CPU_INTERRUPT_NUM         256\r
#define  HOOKAFTER_STUB_SIZE        16\r
\r
//\r
// Exception Error Code of Page-Fault Exception\r
//\r
#define IA32_PF_EC_P                BIT0\r
#define IA32_PF_EC_WR               BIT1\r
#define IA32_PF_EC_US               BIT2\r
#define IA32_PF_EC_RSVD             BIT3\r
#define IA32_PF_EC_ID               BIT4\r
#define IA32_PF_EC_PK               BIT5\r
#define IA32_PF_EC_SS               BIT6\r
#define IA32_PF_EC_SGX              BIT15\r
\r
#include "ArchInterruptDefs.h"\r
\r
#define CPU_STACK_SWITCH_EXCEPTION_NUMBER \\r
  FixedPcdGetSize (PcdCpuStackSwitchExceptionList)\r
\r
#define CPU_STACK_SWITCH_EXCEPTION_LIST \\r
  FixedPcdGetPtr (PcdCpuStackSwitchExceptionList)\r
\r
#define CPU_KNOWN_GOOD_STACK_SIZE \\r
  FixedPcdGet32 (PcdCpuKnownGoodStackSize)\r
\r
#define CPU_TSS_GDT_SIZE (SIZE_2KB + CPU_TSS_DESC_SIZE + CPU_TSS_SIZE)\r
\r
//\r
// Record exception handler information\r
//\r
typedef struct {\r
  UINTN ExceptionStart;\r
  UINTN ExceptionStubHeaderSize;\r
  UINTN HookAfterStubHeaderStart;\r
} EXCEPTION_HANDLER_TEMPLATE_MAP;\r
\r
typedef struct {\r
  UINTN                       IdtEntryCount;\r
  SPIN_LOCK                   DisplayMessageSpinLock;\r
  RESERVED_VECTORS_DATA       *ReservedVectors;\r
  EFI_CPU_INTERRUPT_HANDLER   *ExternalInterruptHandler;\r
} EXCEPTION_HANDLER_DATA;\r
\r
extern CONST UINT32                mErrorCodeFlag;\r
extern CONST UINTN                 mDoFarReturnFlag;\r
\r
/**\r
  Return address map of exception handler template so that C code can generate\r
  exception tables.\r
\r
  @param AddressMap  Pointer to a buffer where the address map is returned.\r
**/\r
VOID\r
EFIAPI\r
AsmGetTemplateAddressMap (\r
  OUT EXCEPTION_HANDLER_TEMPLATE_MAP *AddressMap\r
  );\r
\r
/**\r
  Return address map of exception handler template so that C code can generate\r
  exception tables.\r
\r
  @param IdtEntry          Pointer to IDT entry to be updated.\r
  @param InterruptHandler  IDT handler value.\r
\r
**/\r
VOID\r
ArchUpdateIdtEntry (\r
  IN IA32_IDT_GATE_DESCRIPTOR        *IdtEntry,\r
  IN UINTN                           InterruptHandler\r
  );\r
\r
/**\r
  Read IDT handler value from IDT entry.\r
\r
  @param IdtEntry          Pointer to IDT entry to be read.\r
\r
**/\r
UINTN\r
ArchGetIdtHandler (\r
  IN IA32_IDT_GATE_DESCRIPTOR        *IdtEntry\r
  );\r
\r
/**\r
  Prints a message to the serial port.\r
\r
  @param  Format      Format string for the message to print.\r
  @param  ...         Variable argument list whose contents are accessed\r
                      based on the format string specified by Format.\r
\r
**/\r
VOID\r
EFIAPI\r
InternalPrintMessage (\r
  IN  CONST CHAR8  *Format,\r
  ...\r
  );\r
\r
/**\r
  Find and display image base address and return image base and its entry point.\r
\r
  @param CurrentEip      Current instruction pointer.\r
\r
**/\r
VOID\r
DumpModuleImageInfo (\r
  IN  UINTN              CurrentEip\r
  );\r
\r
/**\r
  Display CPU information.\r
\r
  @param ExceptionType  Exception type.\r
  @param SystemContext  Pointer to EFI_SYSTEM_CONTEXT.\r
**/\r
VOID\r
DumpImageAndCpuContent (\r
  IN EFI_EXCEPTION_TYPE   ExceptionType,\r
  IN EFI_SYSTEM_CONTEXT   SystemContext\r
  );\r
\r
/**\r
  Internal worker function to initialize exception handler.\r
\r
  @param[in]      VectorInfo            Pointer to reserved vector list.\r
  @param[in, out] ExceptionHandlerData  Pointer to exception handler data.\r
\r
  @retval EFI_SUCCESS           CPU Exception Entries have been successfully initialized\r
                                with default exception handlers.\r
  @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.\r
  @retval EFI_UNSUPPORTED       This function is not supported.\r
\r
**/\r
EFI_STATUS\r
InitializeCpuExceptionHandlersWorker (\r
  IN EFI_VECTOR_HANDOFF_INFO       *VectorInfo OPTIONAL,\r
  IN OUT EXCEPTION_HANDLER_DATA    *ExceptionHandlerData\r
  );\r
\r
/**\r
  Registers a function to be called from the processor interrupt handler.\r
\r
  @param[in]  InterruptType        Defines which interrupt or exception to hook.\r
  @param[in]  InterruptHandler     A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called\r
                                   when a processor interrupt occurs. If this parameter is NULL, then the handler\r
                                   will be uninstalled\r
  @param[in] ExceptionHandlerData  Pointer to exception handler data.\r
\r
  @retval EFI_SUCCESS           The handler for the processor interrupt was successfully installed or uninstalled.\r
  @retval EFI_ALREADY_STARTED   InterruptHandler is not NULL, and a handler for InterruptType was\r
                                previously installed.\r
  @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not\r
                                previously installed.\r
  @retval EFI_UNSUPPORTED       The interrupt specified by InterruptType is not supported,\r
                                or this function is not supported.\r
**/\r
EFI_STATUS\r
RegisterCpuInterruptHandlerWorker (\r
  IN EFI_EXCEPTION_TYPE            InterruptType,\r
  IN EFI_CPU_INTERRUPT_HANDLER     InterruptHandler,\r
  IN EXCEPTION_HANDLER_DATA        *ExceptionHandlerData\r
  );\r
\r
/**\r
  Internal worker function to update IDT entries accordling to vector attributes.\r
\r
  @param[in] IdtTable              Pointer to IDT table.\r
  @param[in] TemplateMap           Pointer to a buffer where the address map is\r
                                   returned.\r
  @param[in] ExceptionHandlerData  Pointer to exception handler data.\r
\r
**/\r
VOID\r
UpdateIdtTable (\r
  IN IA32_IDT_GATE_DESCRIPTOR        *IdtTable,\r
  IN EXCEPTION_HANDLER_TEMPLATE_MAP  *TemplateMap,\r
  IN EXCEPTION_HANDLER_DATA          *ExceptionHandlerData\r
  );\r
\r
/**\r
  Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.\r
\r
  @param[in] ExceptionType        Exception type.\r
  @param[in] SystemContext        Pointer to EFI_SYSTEM_CONTEXT.\r
  @param[in] ExceptionHandlerData Pointer to exception handler data.\r
**/\r
VOID\r
ArchSaveExceptionContext (\r
  IN UINTN                        ExceptionType,\r
  IN EFI_SYSTEM_CONTEXT           SystemContext,\r
  IN EXCEPTION_HANDLER_DATA       *ExceptionHandlerData\r
  );\r
\r
/**\r
  Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.\r
\r
  @param[in] ExceptionType        Exception type.\r
  @param[in] SystemContext        Pointer to EFI_SYSTEM_CONTEXT.\r
  @param[in] ExceptionHandlerData Pointer to exception handler data.\r
**/\r
VOID\r
ArchRestoreExceptionContext (\r
  IN UINTN                        ExceptionType,\r
  IN EFI_SYSTEM_CONTEXT           SystemContext,\r
  IN EXCEPTION_HANDLER_DATA       *ExceptionHandlerData\r
  );\r
\r
/**\r
  Fix up the vector number and function address in the vector code.\r
\r
  @param[in] NewVectorAddr   New vector handler address.\r
  @param[in] VectorNum       Index of vector.\r
  @param[in] OldVectorAddr   Old vector handler address.\r
\r
**/\r
VOID\r
EFIAPI\r
AsmVectorNumFixup (\r
  IN VOID    *NewVectorAddr,\r
  IN UINT8   VectorNum,\r
  IN VOID    *OldVectorAddr\r
  );\r
\r
/**\r
  Read and save reserved vector information\r
\r
  @param[in]  VectorInfo        Pointer to reserved vector list.\r
  @param[out] ReservedVector    Pointer to reserved vector data buffer.\r
  @param[in]  VectorCount       Vector number to be updated.\r
\r
  @return EFI_SUCCESS           Read and save vector info successfully.\r
  @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.\r
\r
**/\r
EFI_STATUS\r
ReadAndVerifyVectorInfo (\r
  IN  EFI_VECTOR_HANDOFF_INFO       *VectorInfo,\r
  OUT RESERVED_VECTORS_DATA         *ReservedVector,\r
  IN  UINTN                         VectorCount\r
  );\r
\r
/**\r
  Get ASCII format string exception name by exception type.\r
\r
  @param ExceptionType  Exception type.\r
\r
  @return  ASCII format string exception name.\r
**/\r
CONST CHAR8 *\r
GetExceptionNameStr (\r
  IN EFI_EXCEPTION_TYPE          ExceptionType\r
  );\r
\r
/**\r
  Internal worker function for common exception handler.\r
\r
  @param ExceptionType         Exception type.\r
  @param SystemContext         Pointer to EFI_SYSTEM_CONTEXT.\r
  @param ExceptionHandlerData  Pointer to exception handler data.\r
**/\r
VOID\r
CommonExceptionHandlerWorker (\r
  IN EFI_EXCEPTION_TYPE          ExceptionType,\r
  IN EFI_SYSTEM_CONTEXT          SystemContext,\r
  IN EXCEPTION_HANDLER_DATA      *ExceptionHandlerData\r
  );\r
\r
/**\r
  Setup separate stack for specific exceptions.\r
\r
  @param[in] StackSwitchData      Pointer to data required for setuping up\r
                                  stack switch.\r
\r
  @retval EFI_SUCCESS             The exceptions have been successfully\r
                                  initialized with new stack.\r
  @retval EFI_INVALID_PARAMETER   StackSwitchData contains invalid content.\r
**/\r
EFI_STATUS\r
ArchSetupExceptionStack (\r
  IN CPU_EXCEPTION_INIT_DATA        *StackSwitchData\r
  );\r
\r
/**\r
  Return address map of exception handler template so that C code can generate\r
  exception tables. The template is only for exceptions using task gate instead\r
  of interrupt gate.\r
\r
  @param AddressMap  Pointer to a buffer where the address map is returned.\r
**/\r
VOID\r
EFIAPI\r
AsmGetTssTemplateMap (\r
  OUT EXCEPTION_HANDLER_TEMPLATE_MAP  *AddressMap\r
  );\r
\r
#endif\r
\r