The branch stable/14 has been updated by andrew:
URL:
https://cgit.FreeBSD.org/src/commit/?id=c0de8718a5c1523c01bf30745a4be80784587fc1
commit c0de8718a5c1523c01bf30745a4be80784587fc1
Author: Andrew Turner <and...@freebsd.org>
AuthorDate: 2024-10-04 13:08:36 +0000
Commit: Andrew Turner <and...@freebsd.org>
CommitDate: 2024-10-21 15:03:27 +0000
arm64: Support HWCAP2_AFP and HWCAP2_RPRES
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
(cherry picked from commit 48979e8def00b69a07880e7827af7e32d5e377ff)
---
sys/arm64/arm64/identcpu.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/sys/arm64/arm64/identcpu.c b/sys/arm64/arm64/identcpu.c
index 22978af219dc..d0b4f74c8a15 100644
--- a/sys/arm64/arm64/identcpu.c
+++ b/sys/arm64/arm64/identcpu.c
@@ -943,6 +943,11 @@ 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,
@@ -957,7 +962,8 @@ 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,
};
@@ -1100,6 +1106,11 @@ 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,
@@ -1166,7 +1177,8 @@ 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),
