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arm64: Support HWCAP2_AFP and HWCAP2_RPRES

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These add alternative behaviour to some floating-point instructions
so don't need any kernel support and can just be exposed to userspace.

Sponsored by:	Arm Ltd
This commit is contained in:
Andrew Turner 2024-10-04 13:08:36 +00:00
parent 34aa6f2c2d
commit 48979e8def
1 changed files with 14 additions and 2 deletions
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16
sys/arm64/arm64/identcpu.c
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@ -942,6 +942,11 @@ static const struct mrs_field_value id_aa64isar2_rpres[] = {
MRS_FIELD_VALUE_END,
};
static const struct mrs_field_hwcap id_aa64isar2_rpres_caps[] = {
MRS_HWCAP(2, HWCAP2_RPRES, ID_AA64ISAR2_RPRES_IMPL),
MRS_HWCAP_END
};
static const struct mrs_field_value id_aa64isar2_wfxt[] = {
MRS_FIELD_VALUE_NONE_IMPL(ID_AA64ISAR2, WFxT, NONE, IMPL),
MRS_FIELD_VALUE_END,
@ -956,7 +961,8 @@ static const struct mrs_field id_aa64isar2_fields[] = {
id_aa64isar2_apa3, id_aa64isar2_apa3_caps),
MRS_FIELD_HWCAP(ID_AA64ISAR2, GPA3, false, MRS_EXACT,
id_aa64isar2_gpa3, id_aa64isar2_gpa3_caps),
MRS_FIELD(ID_AA64ISAR2, RPRES, false, MRS_EXACT, id_aa64isar2_rpres),
MRS_FIELD_HWCAP(ID_AA64ISAR2, RPRES, false, MRS_LOWER,
id_aa64isar2_rpres, id_aa64isar2_rpres_caps),
MRS_FIELD(ID_AA64ISAR2, WFxT, false, MRS_EXACT, id_aa64isar2_wfxt),
MRS_FIELD_END,
};
@ -1099,6 +1105,11 @@ static const struct mrs_field_value id_aa64mmfr1_afp[] = {
MRS_FIELD_VALUE_END,
};
static const struct mrs_field_hwcap id_aa64mmfr1_afp_caps[] = {
MRS_HWCAP(2, HWCAP2_AFP, ID_AA64MMFR1_AFP_IMPL),
MRS_HWCAP_END
};
static const struct mrs_field_value id_aa64mmfr1_hcx[] = {
MRS_FIELD_VALUE_NONE_IMPL(ID_AA64MMFR1, HCX, NONE, IMPL),
MRS_FIELD_VALUE_END,
@ -1165,7 +1176,8 @@ static const struct mrs_field id_aa64mmfr1_fields[] = {
MRS_FIELD(ID_AA64MMFR1, CMOVW, false, MRS_EXACT, id_aa64mmfr1_cmovw),
MRS_FIELD(ID_AA64MMFR1, TIDCP1, false, MRS_EXACT, id_aa64mmfr1_tidcp1),
MRS_FIELD(ID_AA64MMFR1, nTLBPA, false, MRS_EXACT, id_aa64mmfr1_ntlbpa),
MRS_FIELD(ID_AA64MMFR1, AFP, false, MRS_EXACT, id_aa64mmfr1_afp),
MRS_FIELD_HWCAP(ID_AA64MMFR1, AFP, false, MRS_LOWER, id_aa64mmfr1_afp,
id_aa64mmfr1_afp_caps),
MRS_FIELD(ID_AA64MMFR1, HCX, false, MRS_EXACT, id_aa64mmfr1_hcx),
MRS_FIELD(ID_AA64MMFR1, ETS, false, MRS_EXACT, id_aa64mmfr1_ets),
MRS_FIELD(ID_AA64MMFR1, TWED, false, MRS_EXACT, id_aa64mmfr1_twed),