arm: Add support for ARMv8 (AArch64 & AArch32)

Note: AArch64 and AArch32 interworking is not supported. If you use an AArch64
kernel you are restricted to AArch64 user-mode binaries. This will be addressed
in a later patch.

Note: Virtualization is only supported in AArch32 mode. This will also be fixed
in a later patch.

Contributors:
Giacomo Gabrielli    (TrustZone, LPAE, system-level AArch64, AArch64 NEON, validation)
Thomas Grocutt       (AArch32 Virtualization, AArch64 FP, validation)
Mbou Eyole           (AArch64 NEON, validation)
Ali Saidi            (AArch64 Linux support, code integration, validation)
Edmund Grimley-Evans (AArch64 FP)
William Wang         (AArch64 Linux support)
Rene De Jong         (AArch64 Linux support, performance opt.)
Matt Horsnell        (AArch64 MP, validation)
Matt Evans           (device models, code integration, validation)
Chris Adeniyi-Jones  (AArch64 syscall-emulation)
Prakash Ramrakhyani  (validation)
Dam Sunwoo           (validation)
Chander Sudanthi     (validation)
Stephan Diestelhorst (validation)
Andreas Hansson      (code integration, performance opt.)
Eric Van Hensbergen  (performance opt.)
Gabe Black

1 files changed, 193 insertions, 0 deletions

diff --git a/src/arch/arm/insts/mem64.cc b/src/arch/arm/insts/mem64.cc
new file mode 100644
index 000000000..4d1fdd302
--- /dev/null
+++ b/src/arch/arm/insts/mem64.cc
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2011-2013 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: Gabe Black
+ */
+
+#include "arch/arm/insts/mem64.hh"
+#include "arch/arm/tlb.hh"
+#include "base/loader/symtab.hh"
+#include "mem/request.hh"
+
+using namespace std;
+
+namespace ArmISA
+{
+
+std::string
+SysDC64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    printMnemonic(ss, "", false);
+    ccprintf(ss, ", [");
+    printReg(ss, base);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+
+
+void
+Memory64::startDisassembly(std::ostream &os) const
+{
+    printMnemonic(os, "", false);
+    printReg(os, dest);
+    ccprintf(os, ", [");
+    printReg(os, base);
+}
+
+void
+Memory64::setExcAcRel(bool exclusive, bool acrel)
+{
+    if (exclusive)
+        memAccessFlags |= Request::LLSC;
+    else
+        memAccessFlags |= ArmISA::TLB::AllowUnaligned;
+    if (acrel) {
+        flags[IsMemBarrier] = true;
+        flags[IsWriteBarrier] = true;
+        flags[IsReadBarrier] = true;
+    }
+}
+
+std::string
+MemoryImm64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    startDisassembly(ss);
+    if (imm)
+        ccprintf(ss, ", #%d", imm);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryDImm64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    printMnemonic(ss, "", false);
+    printReg(ss, dest);
+    ccprintf(ss, ", ");
+    printReg(ss, dest2);
+    ccprintf(ss, ", [");
+    printReg(ss, base);
+    if (imm)
+        ccprintf(ss, ", #%d", imm);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryDImmEx64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    printMnemonic(ss, "", false);
+    printReg(ss, result);
+    ccprintf(ss, ", ");
+    printReg(ss, dest);
+    ccprintf(ss, ", ");
+    printReg(ss, dest2);
+    ccprintf(ss, ", [");
+    printReg(ss, base);
+    if (imm)
+        ccprintf(ss, ", #%d", imm);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryPreIndex64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    startDisassembly(ss);
+    ccprintf(ss, ", #%d]!", imm);
+    return ss.str();
+}
+
+std::string
+MemoryPostIndex64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    startDisassembly(ss);
+    if (imm)
+        ccprintf(ss, "], #%d", imm);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryReg64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    startDisassembly(ss);
+    printExtendOperand(false, ss, offset, type, shiftAmt);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryRaw64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    startDisassembly(ss);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryEx64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    printMnemonic(ss, "", false);
+    printReg(ss, dest);
+    ccprintf(ss, ", ");
+    printReg(ss, result);
+    ccprintf(ss, ", [");
+    printReg(ss, base);
+    ccprintf(ss, "]");
+    return ss.str();
+}
+
+std::string
+MemoryLiteral64::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    std::stringstream ss;
+    printMnemonic(ss, "", false);
+    printReg(ss, dest);
+    ccprintf(ss, ", #%d", pc + imm);
+    return ss.str();
+}
+}