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Diffstat (limited to 'Build/source/libs/libpng/libpng-src/contrib/powerpc-vsx/linux_aux.c')
-rw-r--r-- | Build/source/libs/libpng/libpng-src/contrib/powerpc-vsx/linux_aux.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/Build/source/libs/libpng/libpng-src/contrib/powerpc-vsx/linux_aux.c b/Build/source/libs/libpng/libpng-src/contrib/powerpc-vsx/linux_aux.c new file mode 100644 index 00000000000..796922d77c1 --- /dev/null +++ b/Build/source/libs/libpng/libpng-src/contrib/powerpc-vsx/linux_aux.c @@ -0,0 +1,36 @@ +/* contrib/powerpc-vsx/linux_aux.c + * + * Copyright (c) 2017 Glenn Randers-Pehrson + * Written by Vadim Barkov, 2017. + * Last changed in libpng 1.6.29 [March 16, 2017] + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * + * STATUS: TESTED + * BUG REPORTS: png-mng-implement@sourceforge.net + * + * png_have_vsx implemented for Linux by using the auxiliary vector mechanism. + * + * This code is strict ANSI-C and is probably moderately portable; it does + * however use <stdio.h> and it assumes that /proc/cpuinfo is never localized. + */ + +#include "sys/auxv.h" +#include "png.h" + +static int +png_have_vsx(png_structp png_ptr) +{ + + const unsigned long auxv = getauxval( AT_HWCAP ); + + PNG_UNUSED(png_ptr) + + if(auxv & (PPC_FEATURE_HAS_ALTIVEC|PPC_FEATURE_HAS_VSX )) + return 1; + else + return 0; +} + |