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1
#
if
__has_include
(<sys/auxv.h>)
2
#include
<sys/auxv.h>
3
#define
HAVE_SYS_AUXV_H
4
#
endif
5
6
static
void
__init_cpu_features_constructor
(
unsigned
long
hwcap
,
7
const
__ifunc_arg_t
*
arg
) {
8
unsigned
long
long
feat
=
0
;
9
#define
setCPUFeature
(F)
feat
|= 1ULL << F
10
#define
getCPUFeature
(id, ftr) __asm__("mrs %0, " #id : "=r"(ftr))
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#define
extractBits
(val, start, number) \
12
(val & ((1ULL << number) - 1ULL) << start) >> start
13
unsigned
long
hwcap2
=
0
;
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if
(
hwcap
&
_IFUNC_ARG_HWCAP
)
15
hwcap2
=
arg
->
_hwcap2
;
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if
(
hwcap
&
HWCAP_CRC32
)
17
setCPUFeature
(
FEAT_CRC
);
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if
(
hwcap
&
HWCAP_PMULL
)
19
setCPUFeature
(
FEAT_PMULL
);
20
if
(
hwcap
&
HWCAP_FLAGM
)
21
setCPUFeature
(
FEAT_FLAGM
);
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if
(
hwcap2
&
HWCAP2_FLAGM2
)
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setCPUFeature
(
FEAT_FLAGM2
);
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if
(
hwcap
&
HWCAP_SM4
)
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setCPUFeature
(
FEAT_SM4
);
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if
(
hwcap
&
HWCAP_ASIMDDP
)
27
setCPUFeature
(
FEAT_DOTPROD
);
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if
(
hwcap
&
HWCAP_ASIMDFHM
)
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setCPUFeature
(
FEAT_FP16FML
);
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if
(
hwcap
&
HWCAP_FPHP
)
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setCPUFeature
(
FEAT_FP16
);
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if
(
hwcap
&
HWCAP_DIT
)
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setCPUFeature
(
FEAT_DIT
);
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if
(
hwcap
&
HWCAP_ASIMDRDM
)
35
setCPUFeature
(
FEAT_RDM
);
36
if
(
hwcap
&
HWCAP_SHA2
)
37
setCPUFeature
(
FEAT_SHA2
);
38
if
(
hwcap
&
HWCAP_JSCVT
)
39
setCPUFeature
(
FEAT_JSCVT
);
40
if
(
hwcap
&
HWCAP_FCMA
)
41
setCPUFeature
(
FEAT_FCMA
);
42
if
(
hwcap
&
HWCAP_SB
)
43
setCPUFeature
(
FEAT_SB
);
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if
(
hwcap
&
HWCAP_SSBS
)
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setCPUFeature
(
FEAT_SSBS2
);
46
if
(
hwcap2
&
HWCAP2_MTE
)
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setCPUFeature
(
FEAT_MEMTAG2
);
48
if
(
hwcap2
&
HWCAP2_SVEPMULL
)
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setCPUFeature
(
FEAT_SVE_PMULL128
);
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if
(
hwcap2
&
HWCAP2_SVEBITPERM
)
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setCPUFeature
(
FEAT_SVE_BITPERM
);
52
if
(
hwcap2
&
HWCAP2_SVESHA3
)
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setCPUFeature
(
FEAT_SVE_SHA3
);
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if
(
hwcap2
&
HWCAP2_SVESM4
)
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setCPUFeature
(
FEAT_SVE_SM4
);
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if
(
hwcap2
&
HWCAP2_DCPODP
)
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setCPUFeature
(
FEAT_DPB2
);
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if
(
hwcap
&
HWCAP_ATOMICS
)
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setCPUFeature
(
FEAT_LSE
);
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if
(
hwcap2
&
HWCAP2_RNG
)
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setCPUFeature
(
FEAT_RNG
);
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if
(
hwcap2
&
HWCAP2_I8MM
)
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setCPUFeature
(
FEAT_I8MM
);
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if
(
hwcap2
&
HWCAP2_FRINT
)
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setCPUFeature
(
FEAT_FRINTTS
);
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if
(
hwcap2
&
HWCAP2_SVEF32MM
)
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setCPUFeature
(
FEAT_SVE_F32MM
);
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if
(
hwcap2
&
HWCAP2_SVEF64MM
)
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setCPUFeature
(
FEAT_SVE_F64MM
);
70
if
(
hwcap2
&
HWCAP2_BTI
)
71
setCPUFeature
(
FEAT_BTI
);
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if
(
hwcap2
&
HWCAP2_WFXT
)
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setCPUFeature
(
FEAT_WFXT
);
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if
(
hwcap2
&
HWCAP2_SME
)
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setCPUFeature
(
FEAT_SME
);
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if
(
hwcap2
&
HWCAP2_SME2
)
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setCPUFeature
(
FEAT_SME2
);
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if
(
hwcap2
&
HWCAP2_SME_I16I64
)
79
setCPUFeature
(
FEAT_SME_I64
);
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if
(
hwcap2
&
HWCAP2_SME_F64F64
)
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setCPUFeature
(
FEAT_SME_F64
);
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if
(
hwcap2
&
HWCAP2_MOPS
)
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setCPUFeature
(
FEAT_MOPS
);
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if
(
hwcap2
&
HWCAP2_CSSC
)
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setCPUFeature
(
FEAT_CSSC
);
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if
(
hwcap
&
HWCAP_FP
) {
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setCPUFeature
(
FEAT_FP
);
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// FP and AdvSIMD fields have the same value
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setCPUFeature
(
FEAT_SIMD
);
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}
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if
(
hwcap
&
HWCAP_DCPOP
)
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setCPUFeature
(
FEAT_DPB
);
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if
(
hwcap
&
HWCAP_LRCPC
)
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setCPUFeature
(
FEAT_RCPC
);
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if
(
hwcap
&
HWCAP_ILRCPC
)
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setCPUFeature
(
FEAT_RCPC2
);
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if
(
hwcap2
&
HWCAP2_LRCPC3
)
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setCPUFeature
(
FEAT_RCPC3
);
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if
(
hwcap2
&
HWCAP2_BF16
)
100
setCPUFeature
(
FEAT_BF16
);
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if
(
hwcap
&
HWCAP_SVE
)
102
setCPUFeature
(
FEAT_SVE
);
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if
(
hwcap2
&
HWCAP2_SVE2
)
104
setCPUFeature
(
FEAT_SVE2
);
105
if
(
hwcap
&
HWCAP_SHA3
)
106
setCPUFeature
(
FEAT_SHA3
);
107
setCPUFeature
(
FEAT_INIT
);
108
109
__atomic_store_n(&
__aarch64_cpu_features
.
features
,
feat
,
__ATOMIC_RELAXED
);
110
}
111
