arch-arm: Add Illegal Execution flag to PCState

This patch moves the detection of the Illegal Execution flag (PSTATE.IL)
from the tlb translation stage (fetch) to the decoding stage.  This is
done by adding the illegalExecution field to the PCState.

Change-Id: I9c1c4e9c6bd5ded905c1d56b3034e4e9322582fa
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/10813
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 11 insertions, 9 deletions

diff --git a/src/arch/arm/isa/decoder/decoder.isa b/src/arch/arm/isa/decoder/decoder.isa
index c352e0870..1c9acbebc 100644
--- a/src/arch/arm/isa/decoder/decoder.isa
+++ b/src/arch/arm/isa/decoder/decoder.isa
@@ -1,6 +1,6 @@
 // -*- mode:c++ -*-
 
-// Copyright (c) 2010-2011 ARM Limited
+// Copyright (c) 2010-2011,2018 ARM Limited
 // All rights reserved
 //
 // The license below extends only to copyright in the software and shall
@@ -40,15 +40,17 @@
 //
 // Authors: Gabe Black
 
-decode DECODERFAULT default DecoderFault::decoderFault() {
-    0: decode THUMB default Unknown::unknown() {
-        0: decode AARCH64 {
-            0:
-            ##include "arm.isa"
+decode ILLEGALEXEC default IllegalExec::illegalExec() {
+    0: decode DECODERFAULT default DecoderFault::decoderFault() {
+        0: decode THUMB default Unknown::unknown() {
+            0: decode AARCH64 {
+                0:
+                ##include "arm.isa"
+                1:
+                ##include "aarch64.isa"
+            }
             1:
-            ##include "aarch64.isa"
+            ##include "thumb.isa"
         }
-        1:
-        ##include "thumb.isa"
     }
 }