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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
commitf8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch)
tree26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/Runtime/common/asm/ASMRdMsrEx.asm
parentInitial commit. (diff)
downloadvirtualbox-upstream.tar.xz
virtualbox-upstream.zip
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/VBox/Runtime/common/asm/ASMRdMsrEx.asm84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/asm/ASMRdMsrEx.asm b/src/VBox/Runtime/common/asm/ASMRdMsrEx.asm
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+++ b/src/VBox/Runtime/common/asm/ASMRdMsrEx.asm
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+; $Id: ASMRdMsrEx.asm $
+;; @file
+; IPRT - ASMRdMsrEx().
+;
+
+;
+; Copyright (C) 2013-2019 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 *
+;*******************************************************************************
+%include "iprt/asmdefs.mac"
+
+BEGINCODE
+
+;;
+; Special version of ASMRdMsr that allow specifying the rdi value.
+;
+; @param uMsr msc=rcx, gcc=rdi, x86=[ebp+8] The MSR to read.
+; @param uEdi msc=rdx, gcc=rsi, x86=[ebp+12] The EDI/RDI value.
+; @returns MSR value in rax on amd64 and edx:eax on x86.
+;
+BEGINPROC_EXPORTED ASMRdMsrEx
+%ifdef ASM_CALL64_MSC
+proc_frame ASMRdMsrEx_DupWarningHack
+ push rdi
+ [pushreg rdi]
+[endprolog]
+ and ecx, ecx ; serious paranoia
+ mov rdi, rdx
+ xor eax, eax
+ xor edx, edx
+ rdmsr
+ pop rdi
+ and eax, eax ; paranoia
+ shl rdx, 32
+ or rax, rdx
+ ret
+endproc_frame
+%elifdef ASM_CALL64_GCC
+ mov ecx, edi
+ mov rdi, rsi
+ xor eax, eax
+ xor edx, edx
+ rdmsr
+ and eax, eax ; paranoia
+ shl rdx, 32
+ or rax, rdx
+ ret
+%elifdef RT_ARCH_X86
+ push ebp
+ mov ebp, esp
+ push edi
+ xor eax, eax
+ xor edx, edx
+ mov ecx, [ebp + 8]
+ mov edi, [esp + 12]
+ rdmsr
+ pop edi
+ leave
+ ret
+%else
+ %error "Undefined arch?"
+%endif
+ENDPROC ASMRdMsrEx
+