From: Giacomo Travaglini <giacomo.travaglini@arm.com>
Date: Thu, 15 Feb 2018 13:31:52 +0000 (+0000)
Subject: arch-arm: Enable Debug IFSC when faulting to aarch64 mode
X-Git-Tag: v19.0.0.0~2248
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5a72d77fa5ff80c5d7d4d35791a84ce7ee46f0f0;p=gem5.git

arch-arm: Enable Debug IFSC when faulting to aarch64 mode

Previous code was aborting simulation when a debug exception taken in
aarch64 mode was encountered. This because an invalid (0xff)
instruction fault status code was produced.

Change-Id: I289f93f672be70cfbdc404be536809835160bdaf
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/8363
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
---

diff --git a/src/arch/arm/faults.cc b/src/arch/arm/faults.cc
index a1952d664..a048fa8b2 100644
--- a/src/arch/arm/faults.cc
+++ b/src/arch/arm/faults.cc
@@ -177,7 +177,7 @@ uint8_t ArmFault::aarch64FaultSources[] = {
     0x0d,  // PermissionL1
     0x0e,  // PermissionL2
     0x0f,  // PermissionL3
-    0xff,  // DebugEvent (INVALID)
+    0x22,  // DebugEvent
     0x10,  // SynchronousExternalAbort
     0x30,  // TLBConflictAbort
     0x18,  // SynchPtyErrOnMemoryAccess