Main routines for the EBC interpreter. Includes the initialization and\r
main interpreter routines.\r
\r
-Copyright (c) 2006 - 2010, Intel Corporation. <BR>\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
#include <Protocol/DebugSupport.h>\r
#include <Protocol/Ebc.h>\r
+#include <Protocol/EbcVmTest.h>\r
+#include <Protocol/EbcSimpleDebugger.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
\r
-typedef INT64 VM_REGISTER;\r
-typedef UINT8 *VMIP; // instruction pointer for the VM\r
-typedef UINT32 EXCEPTION_FLAGS;\r
-\r
-typedef struct {\r
- VM_REGISTER Gpr[8]; // General purpose registers.\r
- UINT64 Flags; // Flags register:\r
- // 0 Set to 1 if the result of the last compare was true\r
- // 1 Set to 1 if stepping\r
- // 2..63 Reserved.\r
- VMIP Ip; // Instruction pointer.\r
- UINTN LastException; //\r
- EXCEPTION_FLAGS ExceptionFlags; // to keep track of exceptions\r
- UINT32 StopFlags;\r
- UINT32 CompilerVersion; // via break(6)\r
- UINTN HighStackBottom; // bottom of the upper stack\r
- UINTN LowStackTop; // top of the lower stack\r
- UINT64 StackRetAddr; // location of final return address on stack\r
- UINTN *StackMagicPtr; // pointer to magic value on stack to detect corruption\r
- EFI_HANDLE ImageHandle; // for this EBC driver\r
- EFI_SYSTEM_TABLE *SystemTable; // for debugging only\r
- UINTN LastAddrConverted; // for debug\r
- UINTN LastAddrConvertedValue; // for debug\r
- VOID *FramePtr;\r
- VOID *EntryPoint; // entry point of EBC image\r
- UINTN ImageBase;\r
- VOID *StackPool;\r
- VOID *StackTop;\r
-} VM_CONTEXT;\r
-\r
extern VM_CONTEXT *mVmPtr;\r
\r
-//\r
-// Bits of exception flags field of VM context\r
-//\r
-#define EXCEPTION_FLAG_FATAL 0x80000000 // can't continue\r
-#define EXCEPTION_FLAG_ERROR 0x40000000 // bad, but try to continue\r
-#define EXCEPTION_FLAG_WARNING 0x20000000 // harmless problem\r
-#define EXCEPTION_FLAG_NONE 0x00000000 // for normal return\r
//\r
// Flags passed to the internal create-thunks function.\r
//\r
IN UINT32 ThunkSize\r
);\r
\r
-//\r
-// The interpreter calls these when an exception is detected,\r
-// or as a periodic callback.\r
-//\r
-/**\r
- The VM interpreter calls this function when an exception is detected.\r
-\r
- @param ExceptionType Specifies the processor exception detected.\r
- @param ExceptionFlags Specifies the exception context.\r
- @param VmPtr Pointer to a VM context for passing info to the\r
- EFI debugger.\r
-\r
- @retval EFI_SUCCESS This function completed successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-EbcDebugSignalException (\r
- IN EFI_EXCEPTION_TYPE ExceptionType,\r
- IN EXCEPTION_FLAGS ExceptionFlags,\r
- IN VM_CONTEXT *VmPtr\r
- );\r
-\r
//\r
// Define a constant of how often to call the debugger periodic callback\r
// function.\r
VOID\r
);\r
\r
-/**\r
- Returns the caller's value of the stack pointer.\r
-\r
- We adjust it by 4 here because when they called us, the return address\r
- is put on the stack, thereby lowering it by 4 bytes.\r
-\r
- @return The current value of the stack pointer for the caller.\r
-\r
-**/\r
-UINTN\r
-EFIAPI\r
-EbcLLGetStackPointer (\r
- VOID\r
- );\r
-\r
/**\r
This function is called to execute an EBC CALLEX instruction.\r
This instruction requires that we thunk out to external native\r
@param EbcSp The new EBC stack pointer.\r
@param FramePtr The frame pointer.\r
\r
+ @return The unmodified value returned by the native code.\r
+\r
**/\r
-VOID\r
+INT64\r
EFIAPI\r
EbcLLCALLEXNative (\r
IN UINTN CallAddr,\r
IN UINT8 Size\r
);\r
\r
-/**\r
- When EBC calls native, on return the VM has to stuff the return\r
- value into a VM register. It's assumed here that the value is still\r
- in the register, so simply return and the caller should get the\r
- return result properly.\r
-\r
- @return The unmodified value returned by the native code.\r
-\r
-**/\r
-INT64\r
-EFIAPI\r
-EbcLLGetReturnValue (\r
- VOID\r
- );\r
-\r
/**\r
Returns the stack index and buffer assosicated with the Handle parameter.\r
\r
IN EFI_HANDLE Handle\r
);\r
\r
-\r
-//\r
-// Defines for a simple EBC debugger interface\r
-//\r
-typedef struct _EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL;\r
-\r
-#define EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL_GUID \\r
- { \\r
- 0x2a72d11e, 0x7376, 0x40f6, { 0x9c, 0x68, 0x23, 0xfa, 0x2f, 0xe3, 0x63, 0xf1 } \\r
- }\r
-\r
-typedef\r
-EFI_STATUS\r
-(*EBC_DEBUGGER_SIGNAL_EXCEPTION) (\r
- IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL *This,\r
- IN VM_CONTEXT *VmPtr,\r
- IN EFI_EXCEPTION_TYPE ExceptionType\r
- );\r
-\r
-typedef\r
-VOID\r
-(*EBC_DEBUGGER_DEBUG) (\r
- IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL *This,\r
- IN VM_CONTEXT *VmPtr\r
- );\r
-\r
-typedef\r
-UINT32\r
-(*EBC_DEBUGGER_DASM) (\r
- IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL *This,\r
- IN VM_CONTEXT *VmPtr,\r
- IN UINT16 *DasmString OPTIONAL,\r
- IN UINT32 DasmStringSize\r
- );\r
-\r
-//\r
-// This interface allows you to configure the EBC debug support\r
-// driver. For example, turn on or off saving and printing of\r
-// delta VM even if called. Or to even disable the entire interface,\r
-// in which case all functions become no-ops.\r
-//\r
-typedef\r
-EFI_STATUS\r
-(*EBC_DEBUGGER_CONFIGURE) (\r
- IN EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL *This,\r
- IN UINT32 ConfigId,\r
- IN UINTN ConfigValue\r
- );\r
-\r
-//\r
-// Prototype for the actual EBC debug support protocol interface\r
-//\r
-struct _EFI_EBC_SIMPLE_DEBUGGER_PROTOCOL {\r
- EBC_DEBUGGER_DEBUG Debugger;\r
- EBC_DEBUGGER_SIGNAL_EXCEPTION SignalException;\r
- EBC_DEBUGGER_DASM Dasm;\r
- EBC_DEBUGGER_CONFIGURE Configure;\r
-};\r
-\r
typedef struct {\r
EFI_EBC_PROTOCOL *This;\r
VOID *EntryPoint;\r
CR(a, EBC_PROTOCOL_PRIVATE_DATA, EbcProtocol, EBC_PROTOCOL_PRIVATE_DATA_SIGNATURE)\r
\r
\r
+/**\r
+ Allocates a buffer of type EfiBootServicesCode.\r
+\r
+ @param AllocationSize The number of bytes to allocate.\r
+\r
+ @return A pointer to the allocated buffer or NULL if allocation fails.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+EbcAllocatePoolForThunk (\r
+ IN UINTN AllocationSize\r
+ );\r
+\r
#endif // #ifndef _EBC_INT_H_\r
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