ASMAtomicCmpXchgU64.asm revision 16f8846540385a2be120c7430c1b61ce938c718b
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync; IPRT - ASMAtomicCmpXchgU64().
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afc71ee9d14313aac9881860b235a74d7c8a683evboxsync;*******************************************************************************
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync;* Header Files *
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync;*******************************************************************************
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync; Atomically compares and exchanges an unsigned 64-bit int.
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync; @param pu64 x86:ebp+8
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync; @param u64New x86:ebp+c
c36d095531b5355dba93be3b9b862bac18148109vboxsync; @param u64Old x86:ebp+14
c36d095531b5355dba93be3b9b862bac18148109vboxsync; @returns bool result: true if succesfully exchanged, false if not.
afc71ee9d14313aac9881860b235a74d7c8a683evboxsyncBEGINPROC_EXPORTED ASMAtomicCmpXchgU64
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync%ifndef RT_ARCH_X86
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync %error port me
866306ba031a2f258907507dd4abb3b84b6983e7vboxsync mov ebp, esp
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync mov ebx, dword [ebp+0ch]
afc71ee9d14313aac9881860b235a74d7c8a683evboxsync mov ecx, dword [ebp+0ch + 4]
866306ba031a2f258907507dd4abb3b84b6983e7vboxsync mov edi, [ebp+08h]
866306ba031a2f258907507dd4abb3b84b6983e7vboxsync mov eax, dword [ebp+14h]
866306ba031a2f258907507dd4abb3b84b6983e7vboxsync mov edx, dword [ebp+14h + 4]
866306ba031a2f258907507dd4abb3b84b6983e7vboxsync lock cmpxchg8b [edi]
866306ba031a2f258907507dd4abb3b84b6983e7vboxsync movzx eax, al
866306ba031a2f258907507dd4abb3b84b6983e7vboxsyncENDPROC ASMAtomicCmpXchgU64