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34 lines
880 B
34 lines
880 B
/* contrib/powerpc-vsx/linux_aux.c |
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* |
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* Copyright (c) 2017 Glenn Randers-Pehrson |
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* Written by Vadim Barkov, 2017. |
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* Last changed in libpng 1.6.29 [March 16, 2017] |
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* |
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* This code is released under the libpng license. |
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* For conditions of distribution and use, see the disclaimer |
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* and license in png.h |
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* |
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* STATUS: TESTED |
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* BUG REPORTS: png-mng-implement@sourceforge.net |
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* |
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* png_have_vsx implemented for Linux by using the auxiliary vector mechanism. |
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* |
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* This code is strict ANSI-C and is probably moderately portable; it does |
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* however use <stdio.h> and it assumes that /proc/cpuinfo is never localized. |
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*/ |
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#include "sys/auxv.h" |
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#include "png.h" |
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static int |
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png_have_vsx(png_structp png_ptr) |
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{ |
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unsigned long auxv = getauxval(AT_HWCAP); |
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PNG_UNUSED(png_ptr) |
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if(auxv & (PPC_FEATURE_HAS_ALTIVEC|PPC_FEATURE_HAS_VSX)) |
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return 1; |
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else |
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return 0; |
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}
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