c91eaa3d55
1. In AsmFuncs.asm, DebugSupport, Vect2Desc() function will use hardcode CS to fill the IDT. 20h for Ia32.If the system CS is changed by CPU driver, this driver can not work. System maybe crash. 2. In EBC, RegisterExceptionCallback() can not restore the environment and I add some enhancements. 3. In Image.c, CoreLoadImageCommon never return EFI_SECURITY_VIOLATION when SecurityStatus == EFI_SECURITY_VIOLATION. 4. In Variable.c, 1. There're additional unnecessary loop. All blocks will be gone through even if all the data has been written. We should check the "CurrWriteSize" to see if there's no more data to write, and stop the for loop immediately. 2 "if.else." can be merged to save lines of code. 5. in FvbServices,c, Checksum calculation error. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1891 6f19259b-4bc3-4df7-8a09-765794883524
234 lines
6.8 KiB
C
234 lines
6.8 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. 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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Module Name:
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EbcInt.h
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Abstract:
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Main routines for the EBC interpreter. Includes the initialization and
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main interpreter routines.
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--*/
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#ifndef _EBC_INT_H_
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#define _EBC_INT_H_
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typedef INT64 VM_REGISTER;
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typedef UINT8 *VMIP; // instruction pointer for the VM
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typedef UINT32 EXCEPTION_FLAGS;
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typedef struct {
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VM_REGISTER R[8]; // General purpose registers.
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UINT64 Flags; // Flags register:
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// 0 Set to 1 if the result of the last compare was true
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// 1 Set to 1 if stepping
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// 2..63 Reserved.
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VMIP Ip; // Instruction pointer.
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UINTN LastException; //
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EXCEPTION_FLAGS ExceptionFlags; // to keep track of exceptions
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UINT32 StopFlags;
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UINT32 CompilerVersion; // via break(6)
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UINTN HighStackBottom; // bottom of the upper stack
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UINTN LowStackTop; // top of the lower stack
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UINT64 StackRetAddr; // location of final return address on stack
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UINTN *StackMagicPtr; // pointer to magic value on stack to detect corruption
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EFI_HANDLE ImageHandle; // for this EBC driver
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EFI_SYSTEM_TABLE *SystemTable; // for debugging only
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UINTN LastAddrConverted; // for debug
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UINTN LastAddrConvertedValue; // for debug
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VOID *FramePtr;
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VOID *EntryPoint; // entry point of EBC image
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UINTN ImageBase;
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} VM_CONTEXT;
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extern VM_CONTEXT *mVmPtr;
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//
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// Bits of exception flags field of VM context
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//
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#define EXCEPTION_FLAG_FATAL 0x80000000 // can't continue
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#define EXCEPTION_FLAG_ERROR 0x40000000 // bad, but try to continue
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#define EXCEPTION_FLAG_WARNING 0x20000000 // harmless problem
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#define EXCEPTION_FLAG_NONE 0x00000000 // for normal return
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//
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// Flags passed to the internal create-thunks function.
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//
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#define FLAG_THUNK_ENTRY_POINT 0x01 // thunk for an image entry point
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#define FLAG_THUNK_PROTOCOL 0x00 // thunk for an EBC protocol service
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//
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// Put this value at the bottom of the VM's stack gap so we can check it on
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// occasion to make sure the stack has not been corrupted.
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//
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#define VM_STACK_KEY_VALUE 0xDEADBEEF
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EFI_STATUS
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EbcCreateThunks (
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IN EFI_HANDLE ImageHandle,
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IN VOID *EbcEntryPoint,
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OUT VOID **Thunk,
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IN UINT32 Flags
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)
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;
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EFI_STATUS
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EbcAddImageThunk (
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IN EFI_HANDLE ImageHandle,
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IN VOID *ThunkBuffer,
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IN UINT32 ThunkSize
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)
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;
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//
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// The interpreter calls these when an exception is detected,
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// or as a periodic callback.
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//
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EFI_STATUS
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EbcDebugSignalException (
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN EXCEPTION_FLAGS ExceptionFlags,
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IN VM_CONTEXT *VmPtr
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)
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;
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//
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// Define a constant of how often to call the debugger periodic callback
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// function.
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//
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#define EBC_VM_PERIODIC_CALLBACK_RATE 1000
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EFI_STATUS
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EbcDebugSignalPeriodic (
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IN VM_CONTEXT *VmPtr
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)
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;
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//
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// External low level functions that are native-processor dependent
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//
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UINTN
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EbcLLGetEbcEntryPoint (
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VOID
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)
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;
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UINTN
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EbcLLGetStackPointer (
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VOID
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)
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;
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VOID
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EbcLLCALLEXNative (
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IN UINTN CallAddr,
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IN UINTN EbcSp,
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IN VOID *FramePtr
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)
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;
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VOID
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EbcLLCALLEX (
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IN VM_CONTEXT *VmPtr,
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IN UINTN CallAddr,
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IN UINTN EbcSp,
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IN VOID *FramePtr,
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IN UINT8 Size
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)
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;
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INT64
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EbcLLGetReturnValue (
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VOID
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)
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;
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//
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// Defines for a simple EBC debugger interface
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//
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typedef struct _EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL;
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#define EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL_GUID \
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{ \
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0x2a72d11e, 0x7376, 0x40f6, { 0x9c, 0x68, 0x23, 0xfa, 0x2f, 0xe3, 0x63, 0xf1 } \
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}
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typedef
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EFI_STATUS
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(*EBC_DEBUGGER_SIGNAL_EXCEPTION) (
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IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL * This,
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IN VM_CONTEXT * VmPtr,
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IN EFI_EXCEPTION_TYPE ExceptionType
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);
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typedef
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VOID
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(*EBC_DEBUGGER_DEBUG) (
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IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL * This,
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IN VM_CONTEXT * VmPtr
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);
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typedef
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UINT32
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(*EBC_DEBUGGER_DASM) (
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IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL * This,
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IN VM_CONTEXT * VmPtr,
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IN UINT16 *DasmString OPTIONAL,
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IN UINT32 DasmStringSize
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);
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//
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// This interface allows you to configure the EBC debug support
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// driver. For example, turn on or off saving and printing of
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// delta VM even if called. Or to even disable the entire interface,
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// in which case all functions become no-ops.
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//
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typedef
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EFI_STATUS
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(*EBC_DEBUGGER_CONFIGURE) (
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IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL * This,
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IN UINT32 ConfigId,
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IN UINTN ConfigValue
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);
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//
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// Prototype for the actual EBC debug support protocol interface
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//
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struct _EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL {
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EBC_DEBUGGER_DEBUG Debugger;
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EBC_DEBUGGER_SIGNAL_EXCEPTION SignalException;
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EBC_DEBUGGER_DASM Dasm;
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EBC_DEBUGGER_CONFIGURE Configure;
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};
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typedef struct {
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EFI_EBC_PROTOCOL *This;
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VOID *EntryPoint;
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EFI_HANDLE ImageHandle;
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VM_CONTEXT VmContext;
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} EFI_EBC_THUNK_DATA;
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#define EBC_PROTOCOL_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('e', 'b', 'c', 'p')
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struct _EBC_PROTOCOL_PRIVATE_DATA {
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UINT32 Signature;
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EFI_EBC_PROTOCOL EbcProtocol;
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UINTN StackBase;
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UINTN StackTop;
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UINTN StackSize;
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} ;
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#define EBC_PROTOCOL_PRIVATE_DATA_FROM_THIS(a) \
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CR(a, EBC_PROTOCOL_PRIVATE_DATA, EbcProtocol, EBC_PROTOCOL_PRIVATE_DATA_SIGNATURE)
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#endif // #ifndef _EBC_INT_H_
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