diff options
Diffstat (limited to 'MdeModulePkg/Universal/EbcDxe/x64/EbcLowLevel.asm')
| -rw-r--r-- | MdeModulePkg/Universal/EbcDxe/x64/EbcLowLevel.asm | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/MdeModulePkg/Universal/EbcDxe/x64/EbcLowLevel.asm b/MdeModulePkg/Universal/EbcDxe/x64/EbcLowLevel.asm index 3262ea9378..51e80832b3 100644 --- a/MdeModulePkg/Universal/EbcDxe/x64/EbcLowLevel.asm +++ b/MdeModulePkg/Universal/EbcDxe/x64/EbcLowLevel.asm @@ -1,31 +1,21 @@ - page ,132
- title VM ASSEMBLY LANGUAGE 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.
-;*
-;****************************************************************************
-;****************************************************************************
-; REV 1.0
-;****************************************************************************
+;/** @file
+; This code provides low level routines that support the Virtual Machine.
+; for option ROMs.
;
-; Rev Date Description
-; --- -------- ------------------------------------------------------------
-; 1.0 05/09/12 Initial creation of file.
+; Copyright (c) 2006 - 2008, Intel Corporation. <BR>
+; 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
;
-;****************************************************************************
-
-;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
-; This code provides low level routines that support the Virtual Machine
-; for option ROMs.
-;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;**/
+
+
+ page ,132
+ title VM ASSEMBLY LANGUAGE ROUTINES
;---------------------------------------------------------------------------
; Equate files needed.
@@ -40,10 +30,10 @@ text SEGMENT ;****************************************************************************
; EbcLLCALLEX
;
-; This function is called to execute an EBC CALLEX instruction.
+; This function is called to execute an EBC CALLEX instruction.
; This instruction requires that we thunk out to external native
; code. For x64, we switch stacks, copy the arguments to the stack
-; and jump to the specified function.
+; and jump to the specified function.
; On return, we restore the stack pointer to its original location.
;
; Destroys no working registers.
@@ -58,7 +48,7 @@ EbcLLCALLEXNative PROC PUBLIC push rbx
mov rbp, rsp
; Function prolog
-
+
; Copy FuncAddr to a preserved register.
mov rbx, rcx
@@ -67,9 +57,9 @@ EbcLLCALLEXNative PROC PUBLIC sub rsp, r8
mov rcx, rsp
sub rsp, 20h
- call CopyMem
+ call CopyMem
add rsp, 20h
-
+
; Considering the worst case, load 4 potiential arguments
; into registers.
mov rcx, qword ptr [rsp]
@@ -79,7 +69,7 @@ EbcLLCALLEXNative PROC PUBLIC ; Now call the external routine
call rbx
-
+
; Function epilog
mov rsp, rbp
pop rbx
@@ -92,7 +82,7 @@ EbcLLCALLEXNative ENDP ; Routine Description:
; The VM thunk code stuffs an EBC entry point into a processor
; register. Since we can't use inline assembly to get it from
-; the interpreter C code, stuff it into the return value
+; the interpreter C code, stuff it into the return value
; register and return.
;
; Arguments:
@@ -108,7 +98,7 @@ EbcLLGetEbcEntryPoint ENDP ;/*++
;
;Routine Description:
-;
+;
; Return the caller's value of the stack pointer.
;
;Arguments:
@@ -123,7 +113,7 @@ EbcLLGetEbcEntryPoint ENDP ;
;--*/
-; UINTN EbcLLGetStackPointer()
+; UINTN EbcLLGetStackPointer()
EbcLLGetStackPointer PROC PUBLIC
mov rax, rsp ; get current stack pointer
; Stack adjusted by this much when we were called,
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