1 files changed, 64 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/asm/ASMFxRstor.asm b/src/VBox/Runtime/common/asm/ASMFxRstor.asm
new file mode 100644
index 00000000..deb02da8
--- /dev/null
+++ b/src/VBox/Runtime/common/asm/ASMFxRstor.asm
@@ -0,0 +1,64 @@
+; $Id: ASMFxRstor.asm $
+;; @file
+; IPRT - ASMFxRstor().
+;
+
+;
+; Copyright (C) 2006-2019 Oracle Corporation
+;
+; This file is part of VirtualBox Open Source Edition (OSE), as
+; available from http://www.virtualbox.org. This file is free software;
+; you can redistribute it and/or modify it under the terms of the GNU
+; General Public License (GPL) as published by the Free Software
+; Foundation, in version 2 as it comes in the "COPYING" file of the
+; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+; VirtualBox OSE 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.
+;
+
+;*******************************************************************************
+;* Header Files                                                                *
+;*******************************************************************************
+%define RT_ASM_WITH_SEH64
+%include "iprt/asmdefs.mac"
+
+BEGINCODE
+
+;;
+; Loads extended CPU state.
+; @param    pFxState    Pointer to the FXRSTOR state area.
+;                       msc=rcx, gcc=rdi, x86=[esp+4]
+;
+BEGINPROC_EXPORTED ASMFxRstor
+SEH64_END_PROLOGUE
+%ifdef ASM_CALL64_MSC
+        o64 fxrstor [rcx]
+%elifdef ASM_CALL64_GCC
+        o64 fxrstor [rdi]
+%elif ARCH_BITS == 32
+        mov     ecx, [esp + 4]
+        fxrstor [ecx]
+%elif ARCH_BITS == 16
+        push    bp
+        mov     bp, sp
+        push    es
+        push    bx
+        les     bx, [bp + 4]
+        fxrstor [es:bx]
+        pop     bx
+        pop     es
+        pop     bp
+%else
+ %error "Undefined arch?"
+%endif
+        ret
+ENDPROC ASMFxRstor
+