Sui Jingfeng 2ed5a70bca mips: Implement the run-time MIPS MSA discovery function correctly
The old implementation of png_have_msa() caused a bus error,
if a word in /proc/cpuinfo was longer than 10 characters.

In the original implementation, `word[10]` was too short, and
`word[i++] = ch` caused a stack smash if the characters between
spaces were more than 10.

And also, fclose(f) should be called before leaving.

For example on loongson ls3a4000 cpu platform:

$ cat /proc/cpuinfo

system type             : Generic Loongson64 System
machine                 : loongson,loongson64g-4core-ls7a
processor               : 0
cpu model               : ICT Loongson-3 V0.1  FPU V0.1
BogoMIPS                : 3594.02
wait instruction        : yes
microsecond timers      : yes
tlb_entries             : 2112
extra interrupt vector  : no
hardware watchpoint     : no
isa                     : mips1 mips2 mips3 mips4 mips5 mips32r1 mips32r2 mips64r1 mips64r2
ASEs implemented        : vz msa loongson-mmi loongson-cam loongson-ext loongson-ext2
shadow register sets    : 1
kscratch registers      : 6
package                 : 0
core                    : 0
VCED exceptions         : not available
VCEI exceptions         : not available
processor               : 1
cpu model               : ICT Loongson-3 V0.1  FPU V0.1
BogoMIPS                : 3611.26
wait instruction        : yes
microsecond timers      : yes
tlb_entries             : 2112
extra interrupt vector  : no
hardware watchpoint     : no
isa                     : mips1 mips2 mips3 mips4 mips5 mips32r1 mips32r2 mips64r1 mips64r2
ASEs implemented        : vz msa loongson-mmi loongson-cam loongson-ext loongson-ext2
shadow register sets    : 1
kscratch registers      : 6
package                 : 0
core                    : 1
VCED exceptions         : not available
VCEI exceptions         : not available

Co-authored-by: Cosmin Truta <ctruta@gmail.com>
Signed-off-by: Sui Jingfeng <15330273260@189.cn>
Signed-off-by: Cosmin Truta <ctruta@gmail.com>
2023-12-20 21:09:27 +02:00
..
2018-08-19 00:57:20 -04:00
2022-11-27 17:39:19 +02:00
2022-11-20 21:13:14 +02:00
2022-11-27 17:39:19 +02:00
2022-11-27 17:39:19 +02:00
2022-11-27 17:39:19 +02:00

This "contrib" directory contains contributions which are not necessarily under
the libpng license, although all are open source.  They are not part of
libpng proper and are not used for building the library, although some are used
for testing the library via "make check".