Changeset 25665 in vbox for trunk/src/VBox/Runtime/common/asm/ASMAtomicCmpXchgExU64.asm

Timestamp:

Jan 6, 2010 4:19:49 AM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

56380

Message:

iprt/asm.h,ASMAtomic*.asm: the darwin x86 gcc also has trouble with our cmpxchg8b usage, do like we did for gcc 4.3.x/x86 a while back. Did it for *all* cmpxchg8b users (we missed(?) 3 last time).

File:

• trunk/src/VBox/Runtime/common/asm/ASMAtomicCmpXchgExU64.asm (copied) (copied from trunk/src/VBox/Runtime/common/asm/ASMAtomicCmpXchgU64.asm ) (4 diffs)

trunk/src/VBox/Runtime/common/asm/ASMAtomicCmpXchgExU64.asm

@@ -1 +1 @@
 ; $Id$
 ;; @file
-; IPRT - ASMAtomicCmpXchgU64().
+; IPRT - ASMAtomicCmpXchgExU64().
 ;
 
 ;
-; Copyright (C) 2006-2009 Sun Microsystems, Inc.
+; Copyright (C) 2006-2010 Sun Microsystems, Inc.
 ;
 ; This file is part of VirtualBox Open Source Edition (OSE), as
@@ -37 +37 @@
 
 ;;
-; Atomically compares and exchanges an unsigned 64-bit int.
+; Atomically Exchange an unsigned 64-bit value, ordered.
 ;
 ; @param    pu64     x86:ebp+8   gcc:rdi  msc:rcx
 ; @param    u64New   x86:ebp+c   gcc:rsi  msc:rdx
 ; @param    u64Old   x86:ebp+14  gcc:rcx  msc:r8
+; @param    u64Old   x86:ebp+1c  gcc:rdx  msc:r9
 ;
 ; @returns  bool result: true if succesfully exchanged, false if not.
 ;           x86:al
 ;
-BEGINPROC_EXPORTED ASMAtomicCmpXchgU64
+BEGINPROC_EXPORTED ASMAtomicCmpXchgExU64
 %ifdef RT_ARCH_AMD64
  %ifdef ASM_CALL64_MSC
         mov     rax, r8
         lock cmpxchg [rcx], rdx
+        mov     [r9], rax
  %else
         mov     rax, rcx
         lock cmpxchg [rdi], rsi
+        mov     [rdx], rax
  %endif
         setz    al
@@ -71 +74 @@
         mov     edx, dword [ebp+14h + 4]
         lock cmpxchg8b [edi]
+        mov     edi, [ebp + 1ch]
+        mov     [edi],     eax
+        mov     [edi + 4], edx
         setz    al
         movzx   eax, al
@@ -79 +85 @@
         ret
 %endif
-ENDPROC ASMAtomicCmpXchgU64
+ENDPROC ASMAtomicCmpXchgExU64