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