Hash :
70d10da3
Author :
Date :
2024-01-18T14:57:26
MIPS: Fixed undefined MSA interfaces When compiling on the MIPS platform using the following command: ./configure --enable-hardware-optimizations && make The options '-mmsa -mfp64' are not being passed. PNG_MIPS_MSA_IMPLEMENTATION is defined as 2, leading to the initialization of unimplemented MSA interfaces.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204
/* mips_init.c - MSA optimised filter functions
*
* Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 2016 Glenn Randers-Pehrson
* Written by Mandar Sahastrabuddhe, 2016
* Updated by guxiwei, 2023
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
*/
/* Below, after checking __linux__, various non-C90 POSIX 1003.1 functions are
* called.
*/
#define _POSIX_SOURCE 1
#include <stdio.h>
#include "../pngpriv.h"
#ifdef PNG_READ_SUPPORTED
#if PNG_MIPS_MSA_IMPLEMENTATION == 1 || PNG_MIPS_MMI_IMPLEMENTATION > 0
#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED /* Do MIPS MSA run-time checks */
/* WARNING: it is strongly recommended that you do not build libpng with
* run-time checks for CPU features if at all possible. In the case of the MIPS
* MSA instructions there is no processor-specific way of detecting the
* presence of the required support, therefore run-time detection is extremely
* OS specific.
*
* You may set the macro PNG_MIPS_MSA_FILE to the file name of file containing
* a fragment of C source code which defines the png_have_msa function. There
* are a number of implementations in contrib/mips-msa, but the only one that
* has partial support is contrib/mips-msa/linux.c - a generic Linux
* implementation which reads /proc/cpufino.
*/
#ifndef PNG_MIPS_MSA_FILE
# ifdef __linux__
# define PNG_MIPS_MSA_FILE "contrib/mips-msa/linux.c"
# endif
#endif
#ifdef PNG_MIPS_MSA_FILE
#include <signal.h> /* for sig_atomic_t */
static int png_have_msa(png_structp png_ptr);
#include PNG_MIPS_MSA_FILE
#else /* PNG_MIPS_MSA_FILE */
# error "PNG_MIPS_MSA_FILE undefined: no support for run-time MIPS MSA checks"
#endif /* PNG_MIPS_MSA_FILE */
#endif /* PNG_MIPS_MSA_CHECK_SUPPORTED */
#ifdef PNG_MIPS_MMI_CHECK_SUPPORTED /* Do MIPS MMI run-times checks */
#ifndef PNG_MIPS_MMI_FILE
# ifdef __linux__
# define PNG_MIPS_MMI_FILE "contrib/mips-mmi/linux.c"
# endif
#endif
#ifdef PNG_MIPS_MMI_FILE
#include <signal.h> /* for sig_atomic_t */
static int png_have_mmi();
#include PNG_MIPS_MMI_FILE
#else /* PNG_MIPS_MMI_FILE */
# error "PNG_MIPS_MMI_FILE undefined: no support for run-time MIPS MMI checks"
#endif /* PNG_MIPS_MMI_FILE */
#endif /* PNG_MIPS_MMI_CHECK_SUPPORTED*/
#ifndef PNG_ALIGNED_MEMORY_SUPPORTED
# error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED"
#endif
/* MIPS supports two optimizations: MMI and MSA. The appropriate
* optimization is chosen at runtime
*/
void
png_init_filter_functions_mips(png_structp pp, unsigned int bpp)
{
#if PNG_MIPS_MMI_IMPLEMENTATION > 0
#ifdef PNG_MIPS_MMI_API_SUPPORTED
switch ((pp->options >> PNG_MIPS_MMI) & 3)
{
case PNG_OPTION_UNSET:
#endif /* PNG_MIPS_MMI_API_SUPPORTED */
#ifdef PNG_MIPS_MMI_CHECK_SUPPORTED
{
static volatile sig_atomic_t no_mmi = -1; /* not checked */
if (no_mmi < 0)
no_mmi = !png_have_mmi();
if (no_mmi)
goto MIPS_MSA_INIT;
}
#ifdef PNG_MIPS_MMI_API_SUPPORTED
break;
#endif
#endif /* PNG_MIPS_MMI_CHECK_SUPPORTED */
#ifdef PNG_MIPS_MMI_API_SUPPORTED
default: /* OFF or INVALID */
goto MIPS_MSA_INIT;
case PNG_OPTION_ON:
/* Option turned on */
break;
}
#endif
pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_mmi;
if (bpp == 3)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_mmi;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_mmi;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
png_read_filter_row_paeth3_mmi;
}
else if (bpp == 4)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_mmi;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_mmi;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
png_read_filter_row_paeth4_mmi;
}
#endif /* PNG_MIPS_MMI_IMPLEMENTATION > 0 */
MIPS_MSA_INIT:
#if PNG_MIPS_MSA_IMPLEMENTATION == 1
/* The switch statement is compiled in for MIPS_MSA_API, the call to
* png_have_msa is compiled in for MIPS_MSA_CHECK. If both are defined
* the check is only performed if the API has not set the MSA option on
* or off explicitly. In this case the check controls what happens.
*/
#ifdef PNG_MIPS_MSA_API_SUPPORTED
switch ((pp->options >> PNG_MIPS_MSA) & 3)
{
case PNG_OPTION_UNSET:
/* Allow the run-time check to execute if it has been enabled -
* thus both API and CHECK can be turned on. If it isn't supported
* this case will fall through to the 'default' below, which just
* returns.
*/
#endif /* PNG_MIPS_MSA_API_SUPPORTED */
#ifdef PNG_MIPS_MSA_CHECK_SUPPORTED
{
static volatile sig_atomic_t no_msa = -1; /* not checked */
if (no_msa < 0)
no_msa = !png_have_msa(pp);
if (no_msa)
return;
}
#ifdef PNG_MIPS_MSA_API_SUPPORTED
break;
#endif
#endif /* PNG_MIPS_MSA_CHECK_SUPPORTED */
#ifdef PNG_MIPS_MSA_API_SUPPORTED
default: /* OFF or INVALID */
return;
case PNG_OPTION_ON:
/* Option turned on */
break;
}
#endif
/* IMPORTANT: any new external functions used here must be declared using
* PNG_INTERNAL_FUNCTION in ../pngpriv.h. This is required so that the
* 'prefix' option to configure works:
*
* ./configure --with-libpng-prefix=foobar_
*
* Verify you have got this right by running the above command, doing a build
* and examining pngprefix.h; it must contain a #define for every external
* function you add. (Notice that this happens automatically for the
* initialization function.)
*/
pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_msa;
if (bpp == 3)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_msa;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_msa;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth3_msa;
}
else if (bpp == 4)
{
pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_msa;
pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_msa;
pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth4_msa;
}
#endif /* PNG_MIPS_MSA_IMPLEMENTATION == 1 */
return;
}
#endif /* PNG_MIPS_MSA_IMPLEMENTATION == 1 || PNG_MIPS_MMI_IMPLEMENTATION > 0 */
#endif /* READ */