1 files changed, 93 insertions, 0 deletions
diff --git a/src/VBox/VMM/VMMAll/VMMAllA.asm b/src/VBox/VMM/VMMAll/VMMAllA.asm
new file mode 100644
index 00000000..93a25e76
--- /dev/null
+++ b/src/VBox/VMM/VMMAll/VMMAllA.asm
@@ -0,0 +1,93 @@
+; $Id: VMMAllA.asm $
+;; @file
+; VMM - All Contexts Assembly Routines.
+;
+
+;
+; Copyright (C) 2009-2023 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>.
+;
+; SPDX-License-Identifier: GPL-3.0-only
+;
+
+;*******************************************************************************
+;* Header Files                                                                *
+;*******************************************************************************
+%include "VBox/asmdefs.mac"
+
+
+;*******************************************************************************
+;* Defined Constants And Macros                                                *
+;*******************************************************************************
+%ifdef IN_RING3
+ %ifdef RT_ARCH_AMD64
+  %define VMM_TRASH_XMM_REGS
+ %endif
+%endif
+%ifdef IN_RING0
+ %ifdef RT_ARCH_AMD64
+  %ifdef RT_OS_WINDOWS
+   %define VMM_TRASH_XMM_REGS
+  %endif
+ %endif
+%endif
+%ifndef VMM_TRASH_XMM_REGS
+ %ifdef VBOX_WITH_KERNEL_USING_XMM
+  %define VMM_TRASH_XMM_REGS
+ %endif
+%endif
+
+BEGINCODE
+
+
+;;
+; Trashes the volatile XMM registers in the current ABI.
+;
+BEGINPROC VMMTrashVolatileXMMRegs
+%ifdef VMM_TRASH_XMM_REGS
+        push    xBP
+        mov     xBP, xSP
+
+        ; take whatever is on the stack.
+        and     xSP, ~15
+        sub     xSP, 80h
+
+        movdqa  xmm0, [xSP + 0]
+        movdqa  xmm1, [xSP + 010h]
+        movdqa  xmm2, [xSP + 020h]
+        movdqa  xmm3, [xSP + 030h]
+        movdqa  xmm4, [xSP + 040h]
+        movdqa  xmm5, [xSP + 050h]
+ %ifdef ASM_CALL64_GCC
+        movdqa  xmm6, [xSP + 060h]
+        movdqa  xmm7, [xSP + 070h]
+        movdqa  xmm8, [xSP + 000h]
+        movdqa  xmm9, [xSP + 010h]
+        movdqa  xmm10,[xSP + 020h]
+        movdqa  xmm11,[xSP + 030h]
+        movdqa  xmm12,[xSP + 040h]
+        movdqa  xmm13,[xSP + 050h]
+        movdqa  xmm14,[xSP + 060h]
+        movdqa  xmm15,[xSP + 070h]
+ %endif
+        leave
+%endif ; VMM_TRASH_XMM_REGS
+        xor     eax, eax                ; for good measure.
+        ret
+ENDPROC   VMMTrashVolatileXMMRegs
+