Last change
on this file since 5423 was 4071, checked in by vboxsync, 17 years ago |
Biggest check-in ever. New source code headers for all (C) innotek files.
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File size:
1.1 KB
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1 | ;; @file
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2 | ; innotek Portable Runtime - ASMAtomicBitToggle().
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3 | ;
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4 |
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5 | ;
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6 | ; Copyright (C) 2006-2007 innotek GmbH
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7 | ;
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8 | ; This file is part of VirtualBox Open Source Edition (OSE), as
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9 | ; available from http://www.virtualbox.org. This file is free software;
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10 | ; you can redistribute it and/or modify it under the terms of the GNU
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11 | ; General Public License as published by the Free Software Foundation,
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12 | ; in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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13 | ; distribution. VirtualBox OSE is distributed in the hope that it will
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14 | ; be useful, but WITHOUT ANY WARRANTY of any kind.
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15 |
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16 |
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17 | ;*******************************************************************************
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18 | ;* Header Files *
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19 | ;*******************************************************************************
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20 | %include "iprt/asmdefs.mac"
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21 |
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22 | BEGINCODE
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23 |
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24 | ;;
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25 | ; Atomically toggles a bit in a bitmap.
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26 | ;
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27 | ; @param rcx pvBitmap Pointer to the bitmap.
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28 | ; @param edx iBit The bit to test and set.
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29 | BEGINPROC_EXPORTED ASMAtomicBitToggle
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30 | lock btc [rcx], edx
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31 | ret
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32 | ENDPROC ASMAtomicBitToggle
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33 |
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