diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.nasm | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.nasm')
| -rw-r--r-- | roms/edk2/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.nasm | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.nasm b/roms/edk2/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.nasm new file mode 100644 index 000000000..209c41ddf --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.nasm @@ -0,0 +1,42 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+; InterlockedCompareExchange64.Asm
+;
+; Abstract:
+;
+; InterlockedCompareExchange64 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; InternalSyncCompareExchange64 (
+; IN volatile UINT64 *Value,
+; IN UINT64 CompareValue,
+; IN UINT64 ExchangeValue
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalSyncCompareExchange64)
+ASM_PFX(InternalSyncCompareExchange64):
+ push esi
+ push ebx
+ mov esi, [esp + 12]
+ mov eax, [esp + 16]
+ mov edx, [esp + 20]
+ mov ebx, [esp + 24]
+ mov ecx, [esp + 28]
+ lock cmpxchg8b [esi]
+ pop ebx
+ pop esi
+ ret
+
|