07da1ac8c4
CpuExceptionHandlerLib has code that contains absolute relocations, not supported by Xcode for X64, and it then copies this code to an alternate location in memory. It is very hard to write IP relative self-modifiying code. I had to update AsmVectorNumFixup() to also patch in the absolute addressess after the code was copied. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anderw Fish <afish@apple.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16068 6f19259b-4bc3-4df7-8a09-765794883524
242 lines
7.2 KiB
C
242 lines
7.2 KiB
C
/** @file
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Common header file for CPU Exception Handler Library.
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Copyright (c) 2012 - 2013, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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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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#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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#include "ArchInterruptDefs.h"
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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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extern CONST UINT32 mErrorCodeFlag;
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extern CONST UINTN mImageAlignSize;
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extern CONST UINTN mDoFarReturnFlag;
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extern RESERVED_VECTORS_DATA *mReservedVectors;
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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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@param EntryPoint Return module entry point if module header is found.
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@return !0 Image base address.
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@return 0 Image header cannot be found.
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**/
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UINTN
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FindModuleImageBase (
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IN UINTN CurrentEip,
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OUT UINTN *EntryPoint
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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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DumpCpuContent (
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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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@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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);
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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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@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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);
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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 returned.
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@param[in] IdtEntryCount IDT entries number to be updated.
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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 UINTN IdtEntryCount
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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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**/
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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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);
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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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**/
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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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);
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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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#endif
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