diff mbox series

[v6,03/14] target/arm: Add isar predicates for FEAT_HAFDBS

Message ID 20221024051851.3074715-4-richard.henderson@linaro.org
State New
Headers show
Series target/arm: Implement FEAT_HAFDBS | expand

Commit Message

Richard Henderson Oct. 24, 2022, 5:18 a.m. UTC 
The MMFR1 field may indicate support for hardware update of
access flag alone, or access flag and dirty bit.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu.h | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 64fc03214c..0eeb4abe53 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -4139,6 +4139,16 @@  static inline bool isar_feature_aa64_lva(const ARMISARegisters *id)
     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, VARANGE) != 0;
 }
 
+static inline bool isar_feature_aa64_hafs(const ARMISARegisters *id)
+{
+    return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, HAFDBS) != 0;
+}
+
+static inline bool isar_feature_aa64_hdbs(const ARMISARegisters *id)
+{
+    return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, HAFDBS) >= 2;
+}
+
 static inline bool isar_feature_aa64_tts2uxn(const ARMISARegisters *id)
 {
     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, XNX) != 0;