| /* 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) |
| { |
| 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; |
| } |
