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libavutil: Detect MMI and MSA flags for MIPS

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Add MMI & MSA runtime detection for MIPS.

Basically there are two code pathes. For systems that
natively support CPUCFG instruction or kernel emulated
that instruction, we'll sense this feature from HWCAP and
report the flags according to values grab from CPUCFG. For
systems that have no CPUCFG (or not export it in HWCAP),
we'll parse /proc/cpuinfo instead.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Shiyou Yin <yinshiyou-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Jiaxun Yang
2020-07-18 23:35:39 +08:00
committed by Michael Niedermayer
parent d5380f068d
commit e387fcd01c
8 changed files with 184 additions and 1 deletions
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3
libavutil/tests/cpu.c
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@@ -49,6 +49,9 @@ static const struct {
{ AV_CPU_FLAG_SETEND, "setend" },
#elif ARCH_PPC
{ AV_CPU_FLAG_ALTIVEC, "altivec" },
#elif ARCH_MIPS
{ AV_CPU_FLAG_MMI, "mmi" },
{ AV_CPU_FLAG_MSA, "msa" },
#elif ARCH_X86
{ AV_CPU_FLAG_MMX, "mmx" },
{ AV_CPU_FLAG_MMXEXT, "mmxext" },