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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5038 6f19259b-4bc3-4df7-8a09-765794883524
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vanjeff
2008-04-10 08:49:28 +00:00
parent ed7752ec44
commit fb0b259e4e
38 changed files with 1766 additions and 2402 deletions
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1566
MdeModulePkg/Universal/EbcDxe/EbcExecute.c
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31
MdeModulePkg/Universal/EbcDxe/EbcExecute.h
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@@ -1,25 +1,18 @@
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcExecute.h
Abstract:
/** @file
Header file for Virtual Machine support. Contains EBC defines that can
be of use to a disassembler for the most part. Also provides function
be of use to a disassembler for the most part. Also provides function
prototypes for VM functions.
--*/
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _EBC_EXECUTE_H_
#define _EBC_EXECUTE_H_

425
MdeModulePkg/Universal/EbcDxe/EbcInt.c
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@@ -1,4 +1,7 @@
/*++
/** @file
Top level module for the EBC virtual machine implementation.
Provides auxilliary support routines for the VM. That is, routines
that are not particularly related to VM execution of EBC instructions.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
@@ -9,17 +12,7 @@ http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcInt.c
Abstract:
Top level module for the EBC virtual machine implementation.
Provides auxilliary support routines for the VM. That is, routines
that are not particularly related to VM execution of EBC instructions.
--*/
**/
#include "EbcInt.h"
#include "EbcExecute.h"
@@ -188,28 +181,23 @@ static UINTN mStackNum = 0;
static EFI_EVENT mEbcPeriodicEvent;
VM_CONTEXT *mVmPtr = NULL;
/**
Initializes the VM EFI interface. Allocates memory for the VM interface
and registers the VM protocol.
@param ImageHandle EFI image handle.
@param SystemTable Pointer to the EFI system table.
@return Standard EFI status code.
**/
EFI_STATUS
EFIAPI
InitializeEbcDriver (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Initializes the VM EFI interface. Allocates memory for the VM interface
and registers the VM protocol.
Arguments:
ImageHandle - EFI image handle.
SystemTable - Pointer to the EFI system table.
Returns:
Standard EFI status code.
--*/
{
EFI_EBC_PROTOCOL *EbcProtocol;
EFI_EBC_PROTOCOL *OldEbcProtocol;
@@ -384,6 +372,24 @@ ErrorExit:
return Status;
}
/**
This is the top-level routine plugged into the EBC protocol. Since thunks
are very processor-specific, from here we dispatch directly to the very
processor-specific routine EbcCreateThunks().
@param This protocol instance pointer
@param ImageHandle handle to the image. The EBC interpreter may use
this to keep track of any resource allocations
performed in loading and executing the image.
@param EbcEntryPoint the entry point for the image (as defined in the
file header)
@param Thunk pointer to thunk pointer where the address of the
created thunk is returned.
@return EFI_STATUS
**/
STATIC
EFI_STATUS
EFIAPI
@@ -393,29 +399,6 @@ EbcCreateThunk (
IN VOID *EbcEntryPoint,
OUT VOID **Thunk
)
/*++
Routine Description:
This is the top-level routine plugged into the EBC protocol. Since thunks
are very processor-specific, from here we dispatch directly to the very
processor-specific routine EbcCreateThunks().
Arguments:
This - protocol instance pointer
ImageHandle - handle to the image. The EBC interpreter may use this to keep
track of any resource allocations performed in loading and
executing the image.
EbcEntryPoint - the entry point for the image (as defined in the file header)
Thunk - pointer to thunk pointer where the address of the created
thunk is returned.
Returns:
EFI_STATUS
--*/
{
EFI_STATUS Status;
@@ -428,6 +411,18 @@ Returns:
return Status;
}
/**
This EBC debugger protocol service is called by the debug agent
@param This pointer to the caller's debug support protocol
interface
@param MaxProcessorIndex pointer to a caller allocated UINTN in which the
maximum processor index is returned.
@return Standard EFI_STATUS
**/
STATIC
EFI_STATUS
EFIAPI
@@ -435,28 +430,23 @@ EbcDebugGetMaximumProcessorIndex (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
OUT UINTN *MaxProcessorIndex
)
/*++
Routine Description:
This EBC debugger protocol service is called by the debug agent
Arguments:
This - pointer to the caller's debug support protocol interface
MaxProcessorIndex - pointer to a caller allocated UINTN in which the maximum
processor index is returned.
Returns:
Standard EFI_STATUS
--*/
{
*MaxProcessorIndex = 0;
return EFI_SUCCESS;
}
/**
This protocol service is called by the debug agent to register a function
for us to call on a periodic basis.
@param This pointer to the caller's debug support protocol
interface
@param PeriodicCallback pointer to the function to call periodically
@return Always EFI_SUCCESS
**/
STATIC
EFI_STATUS
EFIAPI
@@ -465,24 +455,6 @@ EbcDebugRegisterPeriodicCallback (
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
)
/*++
Routine Description:
This protocol service is called by the debug agent to register a function
for us to call on a periodic basis.
Arguments:
This - pointer to the caller's debug support protocol interface
PeriodicCallback - pointer to the function to call periodically
Returns:
Always EFI_SUCCESS
--*/
{
if ((mDebugPeriodicCallback == NULL) && (PeriodicCallback == NULL)) {
return EFI_INVALID_PARAMETER;
@@ -495,6 +467,18 @@ Returns:
return EFI_SUCCESS;
}
/**
This protocol service is called by the debug agent to register a function
for us to call when we detect an exception.
@param This pointer to the caller's debug support protocol
interface
@param ExceptionCallback pointer to the function to the exception
@return Always EFI_SUCCESS
**/
STATIC
EFI_STATUS
EFIAPI
@@ -504,24 +488,6 @@ EbcDebugRegisterExceptionCallback (
IN EFI_EXCEPTION_CALLBACK ExceptionCallback,
IN EFI_EXCEPTION_TYPE ExceptionType
)
/*++
Routine Description:
This protocol service is called by the debug agent to register a function
for us to call when we detect an exception.
Arguments:
This - pointer to the caller's debug support protocol interface
ExceptionCallback - pointer to the function to the exception
Returns:
Always EFI_SUCCESS
--*/
{
if ((ExceptionType < 0) || (ExceptionType > MAX_EBC_EXCEPTION)) {
return EFI_INVALID_PARAMETER;
@@ -536,6 +502,15 @@ Returns:
return EFI_SUCCESS;
}
/**
This EBC debugger protocol service is called by the debug agent. Required
for DebugSupport compliance but is only stubbed out for EBC.
@return EFI_SUCCESS
**/
STATIC
EFI_STATUS
EFIAPI
@@ -545,45 +520,26 @@ EbcDebugInvalidateInstructionCache (
IN VOID *Start,
IN UINT64 Length
)
/*++
Routine Description:
This EBC debugger protocol service is called by the debug agent. Required
for DebugSupport compliance but is only stubbed out for EBC.
Arguments:
Returns:
EFI_SUCCESS
--*/
{
return EFI_SUCCESS;
}
/**
The VM interpreter calls this function when an exception is detected.
@param VmPtr pointer to a VM context for passing info to the
EFI debugger.
@return EFI_SUCCESS if it returns at all
**/
EFI_STATUS
EbcDebugSignalException (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN EXCEPTION_FLAGS ExceptionFlags,
IN VM_CONTEXT *VmPtr
)
/*++
Routine Description:
The VM interpreter calls this function when an exception is detected.
Arguments:
VmPtr - pointer to a VM context for passing info to the EFI debugger.
Returns:
EFI_SUCCESS if it returns at all
--*/
{
EFI_SYSTEM_CONTEXT_EBC EbcContext;
EFI_SYSTEM_CONTEXT SystemContext;
@@ -645,26 +601,20 @@ Returns:
return EFI_SUCCESS;
}
/**
To install default Callback function for the VM interpreter.
@param This pointer to the instance of DebugSupport protocol
@return None
**/
STATIC
EFI_STATUS
InitializeEbcCallback (
IN EFI_DEBUG_SUPPORT_PROTOCOL *This
)
/*++
Routine Description:
To install default Callback function for the VM interpreter.
Arguments:
This - pointer to the instance of DebugSupport protocol
Returns:
None
--*/
{
INTN Index;
EFI_STATUS Status;
@@ -707,30 +657,24 @@ Returns:
return EFI_SUCCESS;
}
/**
The default Exception Callback for the VM interpreter.
In this function, we report status code, and print debug information
about EBC_CONTEXT, then dead loop.
@param InterruptType Interrupt type.
@param SystemContext EBC system context.
@return None
**/
STATIC
VOID
CommonEbcExceptionHandler (
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_SYSTEM_CONTEXT SystemContext
)
/*++
Routine Description:
The default Exception Callback for the VM interpreter.
In this function, we report status code, and print debug information
about EBC_CONTEXT, then dead loop.
Arguments:
InterruptType - Interrupt type.
SystemContext - EBC system context.
Returns:
None
--*/
{
//
// We deadloop here to make it easy to debug this issue.
@@ -740,6 +684,17 @@ Returns:
return ;
}
/**
The periodic callback function for EBC VM interpreter, which is used
to support the EFI debug support protocol.
@param Event The Periodic Callback Event.
@param Context It should be the address of VM_CONTEXT pointer.
@return None.
**/
STATIC
VOID
EFIAPI
@@ -747,23 +702,6 @@ EbcPeriodicNotifyFunction (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
The periodic callback function for EBC VM interpreter, which is used
to support the EFI debug support protocol.
Arguments:
Event - The Periodic Callback Event.
Context - It should be the address of VM_CONTEXT pointer.
Returns:
None.
--*/
{
VM_CONTEXT *VmPtr;
@@ -776,27 +714,22 @@ Returns:
return ;
}
/**
The VM interpreter calls this function on a periodic basis to support
the EFI debug support protocol.
@param VmPtr pointer to a VM context for passing info to the
debugger.
@return Standard EFI status.
**/
STATIC
EFI_STATUS
EbcDebugPeriodic (
IN VM_CONTEXT *VmPtr
)
/*++
Routine Description:
The VM interpreter calls this function on a periodic basis to support
the EFI debug support protocol.
Arguments:
VmPtr - pointer to a VM context for passing info to the debugger.
Returns:
Standard EFI status.
--*/
{
EFI_SYSTEM_CONTEXT_EBC EbcContext;
EFI_SYSTEM_CONTEXT SystemContext;
@@ -842,6 +775,20 @@ Returns:
return EFI_SUCCESS;
}
/**
This routine is called by the core when an image is being unloaded from
memory. Basically we now have the opportunity to do any necessary cleanup.
Typically this will include freeing any memory allocated for thunk-creation.
@param This protocol instance pointer
@param ImageHandle handle to the image being unloaded.
@retval EFI_INVALID_PARAMETER the ImageHandle passed in was not found in the
internal list of EBC image handles.
@retval EFI_STATUS completed successfully
**/
STATIC
EFI_STATUS
EFIAPI
@@ -849,26 +796,6 @@ EbcUnloadImage (
IN EFI_EBC_PROTOCOL *This,
IN EFI_HANDLE ImageHandle
)
/*++
Routine Description:
This routine is called by the core when an image is being unloaded from
memory. Basically we now have the opportunity to do any necessary cleanup.
Typically this will include freeing any memory allocated for thunk-creation.
Arguments:
This - protocol instance pointer
ImageHandle - handle to the image being unloaded.
Returns:
EFI_INVALID_PARAMETER - the ImageHandle passed in was not found in
the internal list of EBC image handles.
EFI_STATUS - completed successfully
--*/
{
EBC_THUNK_LIST *ThunkList;
EBC_THUNK_LIST *NextThunkList;
@@ -922,32 +849,26 @@ Returns:
return EFI_SUCCESS;
}
/**
Add a thunk to our list of thunks for a given image handle.
Also flush the instruction cache since we've written thunk code
to memory that will be executed eventually.
@param ImageHandle the image handle to which the thunk is tied
@param ThunkBuffer the buffer we've created/allocated
@param ThunkSize the size of the thunk memory allocated
@retval EFI_OUT_OF_RESOURCES memory allocation failed
@retval EFI_SUCCESS successful completion
**/
EFI_STATUS
EbcAddImageThunk (
IN EFI_HANDLE ImageHandle,
IN VOID *ThunkBuffer,
IN UINT32 ThunkSize
)
/*++
Routine Description:
Add a thunk to our list of thunks for a given image handle.
Also flush the instruction cache since we've written thunk code
to memory that will be executed eventually.
Arguments:
ImageHandle - the image handle to which the thunk is tied
ThunkBuffer - the buffer we've created/allocated
ThunkSize - the size of the thunk memory allocated
Returns:
EFI_OUT_OF_RESOURCES - memory allocation failed
EFI_SUCCESS - successful completion
--*/
{
EBC_THUNK_LIST *ThunkList;
EBC_IMAGE_LIST *ImageList;
@@ -1113,27 +1034,21 @@ FreeEBCStack(
}
return EFI_SUCCESS;
}
/**
Produce an EBC VM test protocol that can be used for regression tests.
@param IHandle handle on which to install the protocol.
@retval EFI_OUT_OF_RESOURCES memory allocation failed
@retval EFI_SUCCESS successful completion
**/
STATIC
EFI_STATUS
InitEbcVmTestProtocol (
IN EFI_HANDLE *IHandle
)
/*++
Routine Description:
Produce an EBC VM test protocol that can be used for regression tests.
Arguments:
IHandle - handle on which to install the protocol.
Returns:
EFI_OUT_OF_RESOURCES - memory allocation failed
EFI_SUCCESS - successful completion
--*/
{
EFI_HANDLE Handle;
EFI_STATUS Status;

33
MdeModulePkg/Universal/EbcDxe/EbcInt.h
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@@ -1,24 +1,17 @@
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcInt.h
Abstract:
/** @file
Main routines for the EBC interpreter. Includes the initialization and
main interpreter routines.
--*/
main interpreter routines.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _EBC_INT_H_
#define _EBC_INT_H_

168
MdeModulePkg/Universal/EbcDxe/Ia32/EbcSupport.c
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@@ -1,24 +1,17 @@
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcSupport.c
Abstract:
/** @file
This module contains EBC support routines that are customized based on
the target processor.
--*/
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "EbcInt.h"
#include "EbcExecute.h"
@@ -33,6 +26,25 @@ Abstract:
#define EBC_THUNK_SIZE 32
#define STACK_REMAIN_SIZE (1024 * 4)
/**
This function is called to execute an EBC CALLEX instruction.
The function check the callee's content to see whether it is common native
code or a thunk to another piece of EBC code.
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
otherwise, set the VM->IP to target EBC code directly to avoid another VM
be startup which cost time and stack space.
@parm VmPtr Pointer to a VM context.
@parm FuncAddr Callee's address
@parm NewStackPointer New stack pointer after the call
@parm FramePtr New frame pointer after the call
@parm Size The size of call instruction
@return None.
**/
VOID
EbcLLCALLEX (
IN VM_CONTEXT *VmPtr,
@@ -41,30 +53,6 @@ EbcLLCALLEX (
IN VOID *FramePtr,
IN UINT8 Size
)
/*++
Routine Description:
This function is called to execute an EBC CALLEX instruction.
The function check the callee's content to see whether it is common native
code or a thunk to another piece of EBC code.
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
otherwise, set the VM->IP to target EBC code directly to avoid another VM
be startup which cost time and stack space.
Arguments:
VmPtr - Pointer to a VM context.
FuncAddr - Callee's address
NewStackPointer - New stack pointer after the call
FramePtr - New frame pointer after the call
Size - The size of call instruction
Returns:
None.
--*/
{
UINTN IsThunk;
UINTN TargetEbcAddr;
@@ -134,7 +122,7 @@ Action:
// The callee is not a thunk to EBC, call native code.
//
EbcLLCALLEXNative (FuncAddr, NewStackPointer, FramePtr);
//
// Get return value and advance the IP.
//
@@ -143,6 +131,19 @@ Action:
}
}
/**
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
None. Since we're called from a fixed up thunk (which we want to keep
small), our only so-called argument is the EBC entry point passed in
to us in a processor register.
@return The value returned by the EBC application we're going to run.
**/
STATIC
UINT64
EbcInterpret (
@@ -163,25 +164,6 @@ EbcInterpret (
IN OUT UINTN Arg15,
IN OUT UINTN Arg16
)
/*++
Routine Description:
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
Arguments:
None. Since we're called from a fixed up thunk (which we want to keep
small), our only so-called argument is the EBC entry point passed in
to us in a processor register.
Returns:
The value returned by the EBC application we're going to run.
--*/
{
//
// Create a new VM context on the stack
@@ -298,30 +280,24 @@ Returns:
return (UINT64) VmContext.R[7];
}
/**
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
@param ImageHandle image handle for the EBC application we're executing
@param SystemTable standard system table passed into an driver's entry point
@return The value returned by the EBC application we're going to run.
**/
STATIC
UINT64
ExecuteEbcImageEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
Arguments:
ImageHandle - image handle for the EBC application we're executing
SystemTable - standard system table passed into an driver's entry point
Returns:
The value returned by the EBC application we're going to run.
--*/
{
//
// Create a new VM context on the stack
@@ -373,7 +349,7 @@ Returns:
VmContext.R[0] = (UINT64)(UINTN) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
VmContext.HighStackBottom = (UINTN)VmContext.R[0];
VmContext.R[0] -= sizeof (UINTN);
//
// Put a magic value in the stack gap, then adjust down again
//
@@ -390,7 +366,7 @@ Returns:
VmContext.R[0] -= sizeof (UINTN);
*(UINTN *) (UINTN) (VmContext.R[0]) = (UINTN) ImageHandle;
VmContext.R[0] -= 16;
VmContext.R[0] -= 16;
VmContext.StackRetAddr = (UINT64) VmContext.R[0];
//
// VM pushes 16-bytes for return address. Simulate that here.
@@ -407,6 +383,17 @@ Returns:
return (UINT64) VmContext.R[7];
}
/**
Create an IA32 thunk for the given EBC entry point.
@param ImageHandle Handle of image for which this thunk is being created
@param EbcEntryPoint Address of the EBC code that the thunk is to call
@param Thunk Returned thunk we create here
@return Standard EFI status.
**/
EFI_STATUS
EbcCreateThunks (
IN EFI_HANDLE ImageHandle,
@@ -414,23 +401,6 @@ EbcCreateThunks (
OUT VOID **Thunk,
IN UINT32 Flags
)
/*++
Routine Description:
Create an IA32 thunk for the given EBC entry point.
Arguments:
ImageHandle - Handle of image for which this thunk is being created
EbcEntryPoint - Address of the EBC code that the thunk is to call
Thunk - Returned thunk we create here
Returns:
Standard EFI status.
--*/
{
UINT8 *Ptr;
UINT8 *ThunkBase;

182
MdeModulePkg/Universal/EbcDxe/Ipf/EbcSupport.c
View File

@@ -1,24 +1,17 @@
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcSupport.c
Abstract:
/** @file
This module contains EBC support routines that are customized based on
the target processor.
--*/
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "EbcInt.h"
#include "EbcExecute.h"
@@ -141,7 +134,7 @@ EbcInterpret (
// Now adjust the EBC stack pointer down to leave a gap for interpreter
// execution. Then stuff a magic value there.
//
Status = GetEBCStack((EFI_HANDLE)(UINTN)-1, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
@@ -151,7 +144,7 @@ EbcInterpret (
VmContext.HighStackBottom = (UINTN) VmContext.R[0];
VmContext.R[0] -= sizeof (UINTN);
PushU64 (&VmContext, (UINT64) VM_STACK_KEY_VALUE);
VmContext.StackMagicPtr = (UINTN *) VmContext.R[0];
VmContext.LowStackTop = (UINTN) VmContext.R[0];
@@ -194,32 +187,27 @@ EbcInterpret (
return (UINT64) VmContext.R[7];
}
/**
IPF implementation.
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
@param ImageHandle image handle for the EBC application we're
executing
@param SystemTable standard system table passed into an driver's
entry point
@return The value returned by the EBC application we're going to run.
**/
STATIC
UINT64
ExecuteEbcImageEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
IPF implementation.
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
Arguments:
ImageHandle - image handle for the EBC application we're executing
SystemTable - standard system table passed into an driver's entry point
Returns:
The value returned by the EBC application we're going to run.
--*/
{
//
// Create a new VM context on the stack
@@ -256,7 +244,7 @@ Returns:
// Get the stack pointer. This is the bottom of the upper stack.
//
Addr = EbcLLGetStackPointer ();
Status = GetEBCStack(ImageHandle, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
@@ -266,7 +254,7 @@ Returns:
VmContext.HighStackBottom = (UINTN) VmContext.R[0];
VmContext.R[0] -= sizeof (UINTN);
//
// Allocate stack space for the interpreter. Then put a magic value
// at the bottom so we can detect stack corruption.
@@ -320,6 +308,19 @@ Returns:
return (UINT64) VmContext.R[7];
}
/**
Create thunks for an EBC image entry point, or an EBC protocol service.
@param ImageHandle Image handle for the EBC image. If not null, then
we're creating a thunk for an image entry point.
@param EbcEntryPoint Address of the EBC code that the thunk is to call
@param Thunk Returned thunk we create here
@param Flags Flags indicating options for creating the thunk
@return Standard EFI status.
**/
EFI_STATUS
EbcCreateThunks (
IN EFI_HANDLE ImageHandle,
@@ -327,25 +328,6 @@ EbcCreateThunks (
OUT VOID **Thunk,
IN UINT32 Flags
)
/*++
Routine Description:
Create thunks for an EBC image entry point, or an EBC protocol service.
Arguments:
ImageHandle - Image handle for the EBC image. If not null, then we're
creating a thunk for an image entry point.
EbcEntryPoint - Address of the EBC code that the thunk is to call
Thunk - Returned thunk we create here
Flags - Flags indicating options for creating the thunk
Returns:
Standard EFI status.
--*/
{
UINT8 *Ptr;
UINT8 *ThunkBase;
@@ -680,6 +662,21 @@ Returns:
return EFI_SUCCESS;
}
/**
Given raw bytes of Itanium based code, format them into a bundle and
write them out.
@param MemPtr pointer to memory location to write the bundles to
@param Template 5-bit template
@param Slot0-2 instruction slot data for the bundle
@retval EFI_INVALID_PARAMETER Pointer is not aligned
@retval No more than 5 bits in template
@retval More than 41 bits used in code
@retval EFI_SUCCESS All data is written.
**/
STATIC
EFI_STATUS
WriteBundle (
@@ -689,27 +686,6 @@ WriteBundle (
IN UINT64 Slot1,
IN UINT64 Slot2
)
/*++
Routine Description:
Given raw bytes of Itanium based code, format them into a bundle and
write them out.
Arguments:
MemPtr - pointer to memory location to write the bundles to
Template - 5-bit template
Slot0-2 - instruction slot data for the bundle
Returns:
EFI_INVALID_PARAMETER - Pointer is not aligned
- No more than 5 bits in template
- More than 41 bits used in code
EFI_SUCCESS - All data is written.
--*/
{
UINT8 *BPtr;
UINT32 Index;
@@ -760,6 +736,24 @@ Returns:
return EFI_SUCCESS;
}
/**
This function is called to execute an EBC CALLEX instruction.
The function check the callee's content to see whether it is common native
code or a thunk to another piece of EBC code.
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
otherwise, set the VM->IP to target EBC code directly to avoid another VM
be startup which cost time and stack space.
@param VmPtr Pointer to a VM context.
@param FuncAddr Callee's address
@param NewStackPointer New stack pointer after the call
@param FramePtr New frame pointer after the call
@param Size The size of call instruction
@return None.
**/
VOID
EbcLLCALLEX (
IN VM_CONTEXT *VmPtr,
@@ -768,30 +762,6 @@ EbcLLCALLEX (
IN VOID *FramePtr,
IN UINT8 Size
)
/*++
Routine Description:
This function is called to execute an EBC CALLEX instruction.
The function check the callee's content to see whether it is common native
code or a thunk to another piece of EBC code.
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
otherwise, set the VM->IP to target EBC code directly to avoid another VM
be startup which cost time and stack space.
Arguments:
VmPtr - Pointer to a VM context.
FuncAddr - Callee's address
NewStackPointer - New stack pointer after the call
FramePtr - New frame pointer after the call
Size - The size of call instruction
Returns:
None.
--*/
{
UINTN IsThunk;
UINTN TargetEbcAddr;

15
MdeModulePkg/Universal/EbcDxe/Ipf/EbcSupport.h
View File

@@ -1,4 +1,5 @@
/*++
/** @file
Definition of EBC Support function.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
@@ -9,17 +10,7 @@ http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcSupport.h
Abstract:
Definition of EBC Support function
Revision History
--*/
**/
#ifndef _IPF_EBC_SUPPORT_H_
#define _IPF_EBC_SUPPORT_H_

168
MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c
View File

@@ -1,24 +1,17 @@
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
EbcSupport.c
Abstract:
/** @file
This module contains EBC support routines that are customized based on
the target x64 processor.
--*/
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "EbcInt.h"
#include "EbcExecute.h"
@@ -45,7 +38,7 @@ PushU64 (
Routine Description:
Push a 64 bit unsigned value to the VM stack.
Arguments:
VmPtr - The pointer to current VM context.
@@ -54,7 +47,7 @@ Arguments:
Returns:
VOID
--*/
{
//
@@ -66,6 +59,19 @@ Returns:
return;
}
/**
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
This is a thunk function. Microsoft x64 compiler only provide fast_call
calling convention, so the first four arguments are passed by rcx, rdx,
r8, and r9, while other arguments are passed in stack.
@return The value returned by the EBC application we're going to run.
**/
STATIC
UINT64
EbcInterpret (
@@ -86,25 +92,6 @@ EbcInterpret (
UINTN Arg15,
UINTN Arg16
)
/*++
Routine Description:
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
Arguments:
This is a thunk function. Microsoft x64 compiler only provide fast_call
calling convention, so the first four arguments are passed by rcx, rdx,
r8, and r9, while other arguments are passed in stack.
Returns:
The value returned by the EBC application we're going to run.
--*/
{
//
// Create a new VM context on the stack
@@ -140,7 +127,7 @@ Returns:
//
// Adjust the VM's stack pointer down.
//
Status = GetEBCStack((EFI_HANDLE)(UINTN)-1, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
@@ -225,30 +212,25 @@ Returns:
return (UINT64) VmContext.R[7];
}
/**
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
@param ImageHandle image handle for the EBC application we're executing
@param SystemTable standard system table passed into an driver's entry
point
@return The value returned by the EBC application we're going to run.
**/
STATIC
UINT64
ExecuteEbcImageEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
Arguments:
ImageHandle - image handle for the EBC application we're executing
SystemTable - standard system table passed into an driver's entry point
Returns:
The value returned by the EBC application we're going to run.
--*/
{
//
// Create a new VM context on the stack
@@ -344,6 +326,17 @@ Returns:
return (UINT64) VmContext.R[7];
}
/**
Create an IA32 thunk for the given EBC entry point.
@param ImageHandle Handle of image for which this thunk is being created
@param EbcEntryPoint Address of the EBC code that the thunk is to call
@param Thunk Returned thunk we create here
@return Standard EFI status.
**/
EFI_STATUS
EbcCreateThunks (
IN EFI_HANDLE ImageHandle,
@@ -351,23 +344,6 @@ EbcCreateThunks (
OUT VOID **Thunk,
IN UINT32 Flags
)
/*++
Routine Description:
Create an IA32 thunk for the given EBC entry point.
Arguments:
ImageHandle - Handle of image for which this thunk is being created
EbcEntryPoint - Address of the EBC code that the thunk is to call
Thunk - Returned thunk we create here
Returns:
Standard EFI status.
--*/
{
UINT8 *Ptr;
UINT8 *ThunkBase;
@@ -496,6 +472,24 @@ Returns:
return EFI_SUCCESS;
}
/**
This function is called to execute an EBC CALLEX instruction.
The function check the callee's content to see whether it is common native
code or a thunk to another piece of EBC code.
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
otherwise, set the VM->IP to target EBC code directly to avoid another VM
be startup which cost time and stack space.
@param VmPtr Pointer to a VM context.
@param FuncAddr Callee's address
@param NewStackPointer New stack pointer after the call
@param FramePtr New frame pointer after the call
@param Size The size of call instruction
@return None.
**/
VOID
EbcLLCALLEX (
IN VM_CONTEXT *VmPtr,
@@ -504,30 +498,6 @@ EbcLLCALLEX (
IN VOID *FramePtr,
IN UINT8 Size
)
/*++
Routine Description:
This function is called to execute an EBC CALLEX instruction.
The function check the callee's content to see whether it is common native
code or a thunk to another piece of EBC code.
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
otherwise, set the VM->IP to target EBC code directly to avoid another VM
be startup which cost time and stack space.
Arguments:
VmPtr - Pointer to a VM context.
FuncAddr - Callee's address
NewStackPointer - New stack pointer after the call
FramePtr - New frame pointer after the call
Size - The size of call instruction
Returns:
None.
--*/
{
UINTN IsThunk;
UINTN TargetEbcAddr;