1 files changed, 97 insertions, 0 deletions
diff --git a/src/VBox/Runtime/VBox/RTLogWriteVmm-amd64-x86.asm b/src/VBox/Runtime/VBox/RTLogWriteVmm-amd64-x86.asm
new file mode 100644
index 00000000..a0061e84
--- /dev/null
+++ b/src/VBox/Runtime/VBox/RTLogWriteVmm-amd64-x86.asm
@@ -0,0 +1,97 @@
+; $Id: RTLogWriteVmm-amd64-x86.asm $
+;; @file
+; IPRT - RTLogWriteVmm - AMD64 & X86 for VBox.
+;
+
+;
+; Copyright (C) 2012-2023 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                                                                *
+;*******************************************************************************
+%define  RT_ASM_WITH_SEH64
+%include "iprt/asmdefs.mac"
+%include "VBox/vmm/cpuidcall.mac"
+
+BEGINCODE
+
+;;
+; CPUID with EAX and ECX inputs, returning ALL output registers.
+;
+; @param    pch         x86:ebp+8   gcc:rdi      msc:rcx
+; @param    cch         x86:ebp+c   gcc:esi      msc:edx
+; @param    fRelease    x86:ebp+10  gcc:edx      msc:r8d
+;
+; @returns  EAX
+;
+RT_BEGINPROC RTLogWriteVmm
+        push    xBP
+        SEH64_PUSH_xBP
+        mov     xBP, xSP
+        SEH64_SET_FRAME_xBP 0
+        push    xBX
+        SEH64_PUSH_GREG xBX
+%ifndef ASM_CALL64_GCC
+        push    xSI
+        SEH64_PUSH_GREG xSI
+%endif
+        SEH64_END_PROLOGUE
+
+%ifdef ASM_CALL64_MSC
+ %if ARCH_BITS != 64
+  %error ARCH_BITS mismatch?
+ %endif
+        mov     rsi, rcx                    ; pch
+        mov     ebx, r8d                    ; fRelease; cch is the right register already.
+%elifdef ASM_CALL64_GCC
+        mov     ebx, edx                    ; fRelease
+        mov     edx, esi                    ; cch
+        mov     rsi, rdi                    ; pch
+%elif ARCH_BITS == 32
+        mov     esi, [xBP + 08h]            ; pch
+        mov     edx, [xBP + 0ch]            ; cch
+        movzx   ebx, byte [xBP + 10h]       ; fRelease
+%else
+ %error unsupported arch
+%endif
+        mov     eax, VBOX_CPUID_REQ_EAX_FIXED
+        mov     ecx, VBOX_CPUID_REQ_ECX_FIXED | VBOX_CPUID_FN_LOG
+
+        cpuid
+
+%ifndef ASM_CALL64_GCC
+        pop     xSI
+%endif
+        pop     xBX
+        leave
+        ret
+ENDPROC RTLogWriteVmm
+