arm: Add support for filtering in the PMU

This patch adds support for filtering events in the PMU. In order to
do so, it updates the ISADevice base class to forward an ISA pointer
to ISA devices. This enables such devices to access the MiscReg file
to determine the current execution level.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/arch/arm/isa_device.cc b/src/arch/arm/isa_device.cc
index 6fb58c6e1..0bb488dac 100644
--- a/src/arch/arm/isa_device.cc
+++ b/src/arch/arm/isa_device.cc
@@ -44,6 +44,19 @@
 namespace ArmISA
 {
 
+BaseISADevice::BaseISADevice()
+    : isa(nullptr)
+{
+}
+
+void
+BaseISADevice::setISA(ISA *_isa)
+{
+    assert(_isa);
+
+    isa = _isa;
+}
+
 void
 DummyISADevice::setMiscReg(int misc_reg, MiscReg val)
 {