arch-arm: AArch32 Crypto SHA

This patch implements the AArch32 secure hashing instructions
from the Crypto extension.

Change-Id: Iaba8424ab71800228a9aff039d93f5c35ee7d8e5
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/13247
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

2 files changed, 72 insertions, 0 deletions

diff --git a/src/arch/arm/isa/templates/crypto.isa b/src/arch/arm/isa/templates/crypto.isa
new file mode 100644
index 000000000..083ef1336
--- /dev/null
+++ b/src/arch/arm/isa/templates/crypto.isa
@@ -0,0 +1,69 @@
+// -*- mode:c++ -*-
+
+// Copyright (c) 2018 ARM Limited
+// All rights reserved
+//
+// The license below extends only to copyright in the software and shall
+// not be construed as granting a license to any other intellectual
+// property including but not limited to intellectual property relating
+// to a hardware implementation of the functionality of the software
+// licensed hereunder.  You may use the software subject to the license
+// terms below provided that you ensure that this notice is replicated
+// unmodified and in its entirety in all distributions of the software,
+// modified or unmodified, in source code or in binary form.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met: redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer;
+// redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution;
+// neither the name of the copyright holders nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Authors: Matt Horsnell
+
+// These currently all work on quad words, so some element/register
+// storage/extraction here is fixed as constants.
+def template CryptoPredOpExecute {{
+    Fault %(class_name)s::execute(ExecContext *xc,
+                                  Trace::InstRecord *traceData) const
+    {
+        Fault fault = NoFault;
+        %(op_decl)s;
+        %(op_rd)s;
+
+        const unsigned rCount = %(r_count)d;
+
+        union RegVect {
+            FloatRegBits regs[rCount];
+        };
+
+        if (%(predicate_test)s)
+        {
+            %(code)s;
+            if (fault == NoFault)
+            {
+                %(op_wb)s;
+            }
+        } else {
+            xc->setPredicate(false);
+        }
+
+        return fault;
+    }
+}};
diff --git a/src/arch/arm/isa/templates/templates.isa b/src/arch/arm/isa/templates/templates.isa
index 6d525738d..14913b358 100644
--- a/src/arch/arm/isa/templates/templates.isa
+++ b/src/arch/arm/isa/templates/templates.isa
@@ -76,4 +76,7 @@
 //Templates for Neon instructions
 ##include "neon.isa"
 
+//Templates for Crypto instructions
+##include "crypto.isa"
+
 ##include "neon64.isa"