Giacomo Travaglini has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/33454 )
Change subject: arch-arm: Introduce HavePACExt helper
......................................................................
arch-arm: Introduce HavePACExt helper
This will check for presence of pointer authentication extension.
According to the reference manual, Pointer authentication is
implemented if the value of at least one of
ID_AA64ISAR1_EL1.{APA, API, GPA, GPI}
is not 0b0000.
Change-Id: I4e98e65758e8edc953794e5b618d2c6c3f6000ae
Signed-off-by: Giacomo Travaglini <giacomo.travagl...@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33454
Reviewed-by: Andreas Sandberg <andreas.sandb...@arm.com>
Maintainer: Andreas Sandberg <andreas.sandb...@arm.com>
Tested-by: kokoro <noreply+kok...@google.com>
---
M src/arch/arm/utility.cc
M src/arch/arm/utility.hh
2 files changed, 9 insertions(+), 0 deletions(-)
Approvals:
Andreas Sandberg: Looks good to me, approved; Looks good to me, approved
kokoro: Regressions pass
diff --git a/src/arch/arm/utility.cc b/src/arch/arm/utility.cc
index ad0a3da..a189c4a 100644
--- a/src/arch/arm/utility.cc
+++ b/src/arch/arm/utility.cc
@@ -315,6 +315,14 @@
}
bool
+HavePACExt(ThreadContext *tc)
+{
+ AA64ISAR1 id_aa64isar1 = tc->readMiscReg(MISCREG_ID_AA64ISAR1_EL1);
+ return id_aa64isar1.api | id_aa64isar1.apa |
+ id_aa64isar1.gpi | id_aa64isar1.gpa;
+}
+
+bool
HaveVirtHostExt(ThreadContext *tc)
{
AA64MMFR1 id_aa64mmfr1 = tc->readMiscReg(MISCREG_ID_AA64MMFR1_EL1);
diff --git a/src/arch/arm/utility.hh b/src/arch/arm/utility.hh
index f00f606..f17ebc5 100644
--- a/src/arch/arm/utility.hh
+++ b/src/arch/arm/utility.hh
@@ -151,6 +151,7 @@
return opModeToEL((OperatingMode) (uint8_t)cpsr.mode);
}
+bool HavePACExt(ThreadContext *tc);
bool HaveVirtHostExt(ThreadContext *tc);
bool HaveSecureEL2Ext(ThreadContext *tc);
bool IsSecureEL2Enabled(ThreadContext *tc);
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I4e98e65758e8edc953794e5b618d2c6c3f6000ae
Gerrit-Change-Number: 33454
Gerrit-PatchSet: 2
Gerrit-Owner: Giacomo Travaglini <giacomo.travagl...@arm.com>
Gerrit-Reviewer: Andreas Sandberg <andreas.sandb...@arm.com>
Gerrit-Reviewer: Giacomo Travaglini <giacomo.travagl...@arm.com>
Gerrit-Reviewer: kokoro <noreply+kok...@google.com>
Gerrit-MessageType: merged
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