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[target-arm,v4,7/7] target-arm: Implement pmccfiltr_write function

Message ID 73da3da6404855b17d5ae82975a32ff3a4dcae3d.1409025949.git.peter.crosthwaite@xilinx.com
State New
Headers show

Commit Message

Peter Crosthwaite Aug. 26, 2014, 4:13 a.m. UTC 
From: Alistair Francis <alistair.francis@xilinx.com>

This is the function that is called when writing to the
PMCCFILTR_EL0 register

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
---

 target-arm/helper.c | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/target-arm/helper.c b/target-arm/helper.c
index d213ed1..2b95f33 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -650,6 +650,14 @@  void pmccntr_sync(CPUARMState *env)
 
 #endif
 
+static void pmccfiltr_write(CPUARMState *env, const ARMCPRegInfo *ri,
+                            uint64_t value)
+{
+    pmccntr_sync(env);
+    env->cp15.pmccfiltr_el0 = value & 0x7E000000;
+    pmccntr_sync(env);
+}
+
 static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
                             uint64_t value)
 {
@@ -801,6 +809,7 @@  static const ARMCPRegInfo v7_cp_reginfo[] = {
 #endif
     { .name = "PMCCFILTR_EL0", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 15, .opc2 = 7,
+      .writefn = pmccfiltr_write,
       .access = PL0_RW, .accessfn = pmreg_access,
       .type = ARM_CP_IO,
       .fieldoffset = offsetof(CPUARMState, cp15.pmccfiltr_el0),