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Diffstat (limited to 'src/VBox/ValidationKit/utils/cpu/rdtsc-asm.asm')
| -rw-r--r-- | src/VBox/ValidationKit/utils/cpu/rdtsc-asm.asm | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/utils/cpu/rdtsc-asm.asm b/src/VBox/ValidationKit/utils/cpu/rdtsc-asm.asm new file mode 100644 index 00000000..b7ccdc7f --- /dev/null +++ b/src/VBox/ValidationKit/utils/cpu/rdtsc-asm.asm @@ -0,0 +1,152 @@ +; $Id: rdtsc-asm.asm $ +;; @file +; RDTSC test, assembly code +; + +; +; Copyright (C) 2009-2019 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" +%include "iprt/x86.mac" + + +;********************************************************************************************************************************* +;* Global Variables * +;********************************************************************************************************************************* +BEGINDATA +;; +; Where DoTscReads() returns the rdtsc values. +; +; @note The results are 32-bit value pairs in x86 mode and 64-bit pairs in +; AMD64 mode. +GLOBALNAME g_aRdTscResults +%ifdef RT_ARCH_AMD64 + dq 0, 0 + dq 0, 0 ; first value stored + dq 0, 0 + dq 0, 0 + dq 0, 0 + dq 0, 0 + dq 0, 0 +%else + dq 0, 0 + dd 0, 0 ; first value stored + dd 0, 0 + dd 0, 0 +%endif + + +BEGINCODE + +;; Takes no arguments, returns number of values read into g_aRdTscResults. +BEGINPROC DoTscReads + push xBP + mov xBP, xSP +%ifdef RT_ARCH_AMD64 + mov rax, 0feedfacecafebabeh + mov rdx, 0cafebabefeedfaceh + mov r8, 0deadbeef0deadbeefh + mov r9, 0deadbeef0deadbeefh + mov r10, 0deadbeef0deadbeefh + mov r11, 0deadbeef0deadbeefh + push rbx + push r12 + push r13 + push r14 + push r15 + + ; Read 6x TSC into registers. + rdtsc + mov r8, rax + mov r9, rdx + rdtsc + mov r10, rax + mov r11, rdx + rdtsc + mov r12, rax + mov r13, rdx + rdtsc + mov r14, rax + mov r15, rdx + rdtsc + mov rbx, rax + mov rcx, rdx + rdtsc + + ; Store the values (64-bit). + mov [NAME(g_aRdTscResults) + 10h xWrtRIP], r8 + mov [NAME(g_aRdTscResults) + 18h xWrtRIP], r9 + mov [NAME(g_aRdTscResults) + 20h xWrtRIP], r10 + mov [NAME(g_aRdTscResults) + 28h xWrtRIP], r11 + mov [NAME(g_aRdTscResults) + 30h xWrtRIP], r12 + mov [NAME(g_aRdTscResults) + 38h xWrtRIP], r13 + mov [NAME(g_aRdTscResults) + 40h xWrtRIP], r14 + mov [NAME(g_aRdTscResults) + 48h xWrtRIP], r15 + mov [NAME(g_aRdTscResults) + 50h xWrtRIP], rbx + mov [NAME(g_aRdTscResults) + 58h xWrtRIP], rcx + mov [NAME(g_aRdTscResults) + 60h xWrtRIP], rax + mov [NAME(g_aRdTscResults) + 68h xWrtRIP], rdx + + pop r15 + pop r14 + pop r13 + pop r12 + pop rbx + + mov eax, 6 +%else + mov eax, 0feedfaceh + mov edx, 0cafebabeh + push esi + push edi + push ebx + + ; Read 3x TSC into registers. + rdtsc + mov ebx, eax + mov ecx, edx + rdtsc + mov esi, eax + mov edi, edx + rdtsc + + ; Store values. + mov [NAME(g_aRdTscResults) + 08h], ebx + mov [NAME(g_aRdTscResults) + 0ch], ecx + mov [NAME(g_aRdTscResults) + 10h], esi + mov [NAME(g_aRdTscResults) + 14h], edi + mov [NAME(g_aRdTscResults) + 18h], eax + mov [NAME(g_aRdTscResults) + 1ch], edx + + pop ebx + pop edi + pop esi + + mov eax, 3 +%endif + leave + ret +ENDPROC DoTscReads + |