| 1 | ; $Id: rtNoCrtHasSse.asm 96201 2022-08-14 03:26:28Z vboxsync $
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| 2 | ;; @file
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| 3 | ; IPRT - No-CRT rtNoCrtHasSse - X86.
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| 4 | ;
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| 5 |
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| 6 | ;
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| 7 | ; Copyright (C) 2022 Oracle Corporation
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| 8 | ;
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| 9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | ; available from http://www.virtualbox.org. This file is free software;
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| 11 | ; you can redistribute it and/or modify it under the terms of the GNU
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| 12 | ; General Public License (GPL) as published by the Free Software
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| 13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | ;
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| 17 | ; The contents of this file may alternatively be used under the terms
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| 18 | ; of the Common Development and Distribution License Version 1.0
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| 19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | ; VirtualBox OSE distribution, in which case the provisions of the
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| 21 | ; CDDL are applicable instead of those of the GPL.
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| 22 | ;
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| 23 | ; You may elect to license modified versions of this file under the
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| 24 | ; terms and conditions of either the GPL or the CDDL or both.
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| 25 | ;
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| 26 |
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| 27 |
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| 28 | %include "iprt/asmdefs.mac"
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| 29 | %include "iprt/x86.mac"
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| 30 |
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| 31 |
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| 32 | BEGINDATA
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| 33 | g_frtNoCrtHasSse: db 0x80
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| 34 |
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| 35 |
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| 36 | BEGINCODE
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| 37 |
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| 38 | ;;
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| 39 | ; Checks if SSE is supported.
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| 40 | ; @returns 1 if supported, 0 if not.
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| 41 | ; @uses eax only
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| 42 | ;
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| 43 | BEGINPROC rtNoCrtHasSse
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| 44 | mov al, [g_frtNoCrtHasSse]
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| 45 | test al, 0x80
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| 46 | jnz .detect_sse
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| 47 | ret
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| 48 |
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| 49 | .detect_sse:
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| 50 | push ebx
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| 51 | push ecx
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| 52 | push edx
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| 53 |
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| 54 | mov eax, 1
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| 55 | cpuid
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| 56 | test edx, X86_CPUID_FEATURE_EDX_SSE
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| 57 | jz .no_supported
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| 58 | xor eax, eax
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| 59 | .no_supported:
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| 60 |
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| 61 | pop edx
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| 62 | pop ecx
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| 63 | pop ebx
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| 64 | ret
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| 65 | ENDPROC rtNoCrtHasSse
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| 66 |
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