diff options
Diffstat (limited to 'MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c')
| -rw-r--r-- | MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c | 164 |
1 files changed, 67 insertions, 97 deletions
diff --git a/MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c b/MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c index bec82d67c5..90db1669d9 100644 --- a/MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c +++ b/MdeModulePkg/Universal/EbcDxe/x64/EbcSupport.c @@ -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];
}
-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
+ @param ImageHandle image handle for the EBC application we're executing
+ @param SystemTable standard system table passed into an driver's entry
+ point
-Returns:
+ @return The value returned by the EBC application we're going to run.
- The value returned by the EBC application we're going to run.
-
---*/
+**/
+STATIC
+UINT64
+ExecuteEbcImageEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
{
//
// 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;
@@ -496,38 +472,32 @@ Returns: return EFI_SUCCESS;
}
-VOID
-EbcLLCALLEX (
- IN VM_CONTEXT *VmPtr,
- IN UINTN FuncAddr,
- IN UINTN NewStackPointer,
- IN VOID *FramePtr,
- IN UINT8 Size
- )
-/*++
-
-Routine Description:
- This function is called to execute an EBC CALLEX instruction.
+/**
+ 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
+ @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
-Returns:
+ @return None.
- None.
-
---*/
+**/
+VOID
+EbcLLCALLEX (
+ IN VM_CONTEXT *VmPtr,
+ IN UINTN FuncAddr,
+ IN UINTN NewStackPointer,
+ IN VOID *FramePtr,
+ IN UINT8 Size
+ )
{
UINTN IsThunk;
UINTN TargetEbcAddr;
|