From: Nikos Nikoleris <nikos.nikoleris@arm.com>
Date: Tue, 19 Dec 2017 21:43:51 +0000 (+0000)
Subject: arch-arm: Fix cache line size for cache maintenace inst
X-Git-Tag: v19.0.0.0~2316
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=760e2eb6f4e40080a49e6372284c5213bf95475a;p=gem5.git

arch-arm: Fix cache line size for cache maintenace inst

Cache maintenance operations operate on whole cache blocks. This
changeset uses the system cache line size as the size of the cache
maintenance requests and masks the lower bits of the effective
address.

Change-Id: I6e7aefff51670c8cac39e4e73db21a0c5a0b7aef
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/7824
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
---

diff --git a/src/arch/arm/isa/templates/misc.isa b/src/arch/arm/isa/templates/misc.isa
index 639ff3aca..6d63b8e14 100644
--- a/src/arch/arm/isa/templates/misc.isa
+++ b/src/arch/arm/isa/templates/misc.isa
@@ -1,6 +1,6 @@
 // -*- mode:c++ -*-
 
-// Copyright (c) 2010-2013,2017 ARM Limited
+// Copyright (c) 2010-2013,2017-2018 ARM Limited
 // All rights reserved
 //
 // The license below extends only to copyright in the software and shall
@@ -646,9 +646,9 @@ def template Mcr15Execute {{
             }
 
             if (fault == NoFault) {
-                Addr size = 64;
-                EA &= ~(size - 1);
-                fault = xc->writeMem(NULL, size, EA, memAccessFlags, NULL);
+                Addr op_size = xc->tcBase()->getSystemPtr()->cacheLineSize();
+                EA &= ~(op_size - 1);
+                fault = xc->writeMem(NULL, op_size, EA, memAccessFlags, NULL);
             }
         } else {
             xc->setPredicate(false);
@@ -675,9 +675,9 @@ def template Mcr15InitiateAcc {{
             }
 
             if (fault == NoFault) {
-                Addr size = 64;
-                EA &= ~(size - 1);
-                fault = xc->writeMem(NULL, size, EA, memAccessFlags, NULL);
+                Addr op_size = xc->tcBase()->getSystemPtr()->cacheLineSize();
+                EA &= ~(op_size - 1);
+                fault = xc->writeMem(NULL, op_size, EA, memAccessFlags, NULL);
             }
         } else {
             xc->setPredicate(false);