tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
audk/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm

40 lines
1.2 KiB
NASM
Raw Normal View History

MdePkg BaseSynchronizationLib: Convert X64/InterlockedDecrement.asm to NASM The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert X64/InterlockedDecrement.asm to X64/InterlockedDecrement.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
2016-05-31 03:52:14 +02:00
;------------------------------------------------------------------------------
;
MdePkg/SynchronizationLib: fix Interlocked[De|In]crement return value REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1197 Today's InterlockedIncrement()/InterlockedDecrement() guarantees to perform atomic increment/decrement but doesn't guarantee the return value equals to the new value. The patch fixes the behavior to use "XADD" instruction to guarantee the return value equals to the new value. The patch calls intrinsic functions for MSVC tool chain, calls the NASM implementation for INTEL tool chain and calls GCC inline assembly implementation (GccInline.c) for GCC tool chain. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com>
2018-09-07 11:26:14 +02:00
; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
MdePkg BaseSynchronizationLib: Convert X64/InterlockedDecrement.asm to NASM The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert X64/InterlockedDecrement.asm to X64/InterlockedDecrement.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
2016-05-31 03:52:14 +02:00
; 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:
;
; InterlockedDecrement.Asm
;
; Abstract:
;
; InterlockedDecrement function
;
; Notes:
;
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
MdePkg/BaseSynchronizationLib: Fix function names in function headers Some of the function names in function header comment blocks in assembly files do not match the symbol name in the assembly sources. Update function header comment blocks to match symbol name. Cc: Liming Gao <liming.gao@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Andrew Fish <afish@apple.com> Cc: Jeff Fan <jeff.fan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-11-17 20:08:38 +01:00
; InternalSyncDecrement (
MdePkg/BaseSynchronizationLib: Add volatile Interlocked*() APIs The SpinLock functions in the SynchronicationLib use volatile parameters to keep compiler from optimizing these functions too much. The volatile keyword is missing from the Interlocked*() functions in this same library instance. Update the library instance to consistently use volatile on all functions in the SynchronizationLib class. Cc: Liming Gao <liming.gao@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Andrew Fish <afish@apple.com> Cc: Jeff Fan <jeff.fan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2016-11-16 23:37:15 +01:00
; IN volatile UINT32 *Value
MdePkg BaseSynchronizationLib: Convert X64/InterlockedDecrement.asm to NASM The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert X64/InterlockedDecrement.asm to X64/InterlockedDecrement.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
2016-05-31 03:52:14 +02:00
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalSyncDecrement)
ASM_PFX(InternalSyncDecrement):
MdePkg/SynchronizationLib: fix Interlocked[De|In]crement return value REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1197 Today's InterlockedIncrement()/InterlockedDecrement() guarantees to perform atomic increment/decrement but doesn't guarantee the return value equals to the new value. The patch fixes the behavior to use "XADD" instruction to guarantee the return value equals to the new value. The patch calls intrinsic functions for MSVC tool chain, calls the NASM implementation for INTEL tool chain and calls GCC inline assembly implementation (GccInline.c) for GCC tool chain. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com>
2018-09-07 11:26:14 +02:00
mov eax, 0FFFFFFFFh
lock xadd dword [rcx], eax
dec eax
MdePkg BaseSynchronizationLib: Convert X64/InterlockedDecrement.asm to NASM The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert X64/InterlockedDecrement.asm to X64/InterlockedDecrement.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
2016-05-31 03:52:14 +02:00
ret