diff mbox

[PULL,13/19] target-arm: Don't take interrupts targeting lower ELs

Message ID 1412015213-22268-14-git-send-email-peter.maydell@linaro.org
State Accepted
Commit dfafd0908820acf68f7c69ab3e0ebe855278d0bb
Headers show

Commit Message

Peter Maydell Sept. 29, 2014, 6:26 p.m. UTC 
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1411718914-6608-6-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target-arm/cpu.h | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox

Patch

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index cc2c210..81e7e81 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -1175,6 +1175,13 @@  bool write_cpustate_to_list(ARMCPU *cpu);
 static inline bool arm_excp_unmasked(CPUState *cs, unsigned int excp_idx)
 {
     CPUARMState *env = cs->env_ptr;
+    unsigned int cur_el = arm_current_pl(env);
+    unsigned int target_el = arm_excp_target_el(cs, excp_idx);
+
+    /* Don't take exceptions if they target a lower EL.  */
+    if (cur_el > target_el) {
+        return false;
+    }
 
     switch (excp_idx) {
     case EXCP_FIQ: