summaryrefslogtreecommitdiffstats
path: root/src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm
diff options
context:
space:
mode:
Diffstat (limited to 'src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm')
-rw-r--r--src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm b/src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm
new file mode 100644
index 00000000..1266e3bc
--- /dev/null
+++ b/src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm
@@ -0,0 +1,86 @@
+; $Id: ASMAtomicUoAndU64.asm $
+;; @file
+; IPRT - ASMAtomicUoAndU64().
+;
+
+;
+; Copyright (C) 2013-2023 Oracle and/or its affiliates.
+;
+; This file is part of VirtualBox base platform packages, as
+; available from https://www.virtualbox.org.
+;
+; This program is free software; you can redistribute it and/or
+; modify it under the terms of the GNU General Public License
+; as published by the Free Software Foundation, in version 3 of the
+; License.
+;
+; This program is distributed in the hope that it will be useful, but
+; WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+; General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program; if not, see <https://www.gnu.org/licenses>.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+; in the VirtualBox distribution, in which case the provisions of the
+; CDDL are applicable instead of those of the GPL.
+;
+; You may elect to license modified versions of this file under the
+; terms and conditions of either the GPL or the CDDL or both.
+;
+; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+;
+
+;*******************************************************************************
+;* Header Files *
+;*******************************************************************************
+%include "iprt/asmdefs.mac"
+
+BEGINCODE
+
+;;
+; Atomically AND an unsigned 64-bit value, unordered.
+;
+; @param pu64 x86:ebp+8 gcc:rdi msc:rcx
+; @param u64Or x86:ebp+c gcc:rsi msc:rdx
+;
+; @returns void
+;
+RT_BEGINPROC ASMAtomicUoAndU64
+%ifdef RT_ARCH_AMD64
+ %ifdef ASM_CALL64_MSC
+ and [rcx], rdx
+ %else
+ and [rdi], rsi
+ %endif
+%elifdef RT_ARCH_X86
+ push ebp
+ mov ebp, esp
+ push ebx
+ push edi
+
+ mov edi, [ebp + 08h]
+ mov ebx, [ebp + 0ch]
+ mov ecx, [ebp + 0ch + 4]
+ mov eax, ebx
+ mov edx, ecx
+.try_again:
+ cmpxchg8b [edi]
+ jz .done
+ mov ebx, eax
+ and ebx, [ebp + 0ch]
+ mov ecx, edx
+ and ecx, [ebp + 0ch + 4]
+ jmp .try_again
+
+.done:
+ pop edi
+ pop ebx
+ leave
+%endif
+ ret
+ENDPROC ASMAtomicUoAndU64
+