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/*
* Copyright (c) 2010, 2012-2013, 2017-2018 ARM Limited
* Copyright (c) 2013 Advanced Micro Devices, Inc.
* 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/misc.hh"
#include "cpu/reg_class.hh"
std::string
MrsOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
bool foundPsr = false;
for (unsigned i = 0; i < numSrcRegs(); i++) {
const RegId& reg = srcRegIdx(i);
if (!reg.isMiscReg()) {
continue;
}
if (reg.index() == MISCREG_CPSR) {
ss << "cpsr";
foundPsr = true;
break;
}
if (reg.index() == MISCREG_SPSR) {
ss << "spsr";
foundPsr = true;
break;
}
}
if (!foundPsr) {
ss << "????";
}
return ss.str();
}
void
MsrBase::printMsrBase(std::ostream &os) const
{
printMnemonic(os);
bool apsr = false;
bool foundPsr = false;
for (unsigned i = 0; i < numDestRegs(); i++) {
const RegId& reg = destRegIdx(i);
if (!reg.isMiscReg()) {
continue;
}
if (reg.index() == MISCREG_CPSR) {
os << "cpsr_";
foundPsr = true;
break;
}
if (reg.index() == MISCREG_SPSR) {
if (bits(byteMask, 1, 0)) {
os << "spsr_";
} else {
os << "apsr_";
apsr = true;
}
foundPsr = true;
break;
}
}
if (!foundPsr) {
os << "????";
return;
}
if (bits(byteMask, 3)) {
if (apsr) {
os << "nzcvq";
} else {
os << "f";
}
}
if (bits(byteMask, 2)) {
if (apsr) {
os << "g";
} else {
os << "s";
}
}
if (bits(byteMask, 1)) {
os << "x";
}
if (bits(byteMask, 0)) {
os << "c";
}
}
std::string
MsrImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMsrBase(ss);
ccprintf(ss, ", #%#x", imm);
return ss.str();
}
std::string
MsrRegOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMsrBase(ss);
ss << ", ";
printIntReg(ss, op1);
return ss.str();
}
std::string
MrrcOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, dest2);
ss << ", ";
printMiscReg(ss, op1);
return ss.str();
}
std::string
McrrOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printMiscReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
ss << ", ";
printIntReg(ss, op2);
return ss.str();
}
std::string
ImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
ccprintf(ss, "#%d", imm);
return ss.str();
}
std::string
RegImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ccprintf(ss, ", #%d", imm);
return ss.str();
}
std::string
RegRegOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
return ss.str();
}
std::string
RegRegRegImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
ss << ", ";
printIntReg(ss, op2);
ccprintf(ss, ", #%d", imm);
return ss.str();
}
std::string
RegRegRegRegOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
ss << ", ";
printIntReg(ss, op2);
ss << ", ";
printIntReg(ss, op3);
return ss.str();
}
std::string
RegRegRegOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
ss << ", ";
printIntReg(ss, op2);
return ss.str();
}
std::string
RegRegImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
ccprintf(ss, ", #%d", imm);
return ss.str();
}
std::string
MiscRegRegImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printMiscReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
return ss.str();
}
std::string
RegMiscRegImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printMiscReg(ss, op1);
return ss.str();
}
std::string
RegImmImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ccprintf(ss, ", #%d, #%d", imm1, imm2);
return ss.str();
}
std::string
RegRegImmImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ss << ", ";
printIntReg(ss, op1);
ccprintf(ss, ", #%d, #%d", imm1, imm2);
return ss.str();
}
std::string
RegImmRegOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ccprintf(ss, ", #%d, ", imm);
printIntReg(ss, op1);
return ss.str();
}
std::string
RegImmRegShiftOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
printMnemonic(ss);
printIntReg(ss, dest);
ccprintf(ss, ", #%d, ", imm);
printShiftOperand(ss, op1, true, shiftAmt, INTREG_ZERO, shiftType);
printIntReg(ss, op1);
return ss.str();
}
std::string
UnknownOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
return csprintf("%-10s (inst %#08x)", "unknown", machInst & mask(32));
}
McrMrcMiscInst::McrMrcMiscInst(const char *_mnemonic, ExtMachInst _machInst,
uint64_t _iss, MiscRegIndex _miscReg)
: ArmStaticInst(_mnemonic, _machInst, No_OpClass)
{
flags[IsNonSpeculative] = true;
iss = _iss;
miscReg = _miscReg;
}
Fault
McrMrcMiscInst::execute(ExecContext *xc, Trace::InstRecord *traceData) const
{
uint32_t cpsr = xc->readMiscReg(MISCREG_CPSR);
uint32_t hcr = xc->readMiscReg(MISCREG_HCR);
uint32_t scr = xc->readMiscReg(MISCREG_SCR);
uint32_t hdcr = xc->readMiscReg(MISCREG_HDCR);
uint32_t hstr = xc->readMiscReg(MISCREG_HSTR);
uint32_t hcptr = xc->readMiscReg(MISCREG_HCPTR);
bool hypTrap = mcrMrc15TrapToHyp(miscReg, hcr, cpsr, scr, hdcr, hstr,
hcptr, iss);
if (hypTrap) {
return std::make_shared<HypervisorTrap>(machInst, iss,
EC_TRAPPED_CP15_MCR_MRC);
} else {
return NoFault;
}
}
std::string
McrMrcMiscInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
return csprintf("%-10s (pipe flush)", mnemonic);
}
McrMrcImplDefined::McrMrcImplDefined(const char *_mnemonic,
ExtMachInst _machInst, uint64_t _iss,
MiscRegIndex _miscReg)
: McrMrcMiscInst(_mnemonic, _machInst, _iss, _miscReg)
{}
Fault
McrMrcImplDefined::execute(ExecContext *xc, Trace::InstRecord *traceData) const
{
uint32_t cpsr = xc->readMiscReg(MISCREG_CPSR);
uint32_t hcr = xc->readMiscReg(MISCREG_HCR);
uint32_t scr = xc->readMiscReg(MISCREG_SCR);
uint32_t hdcr = xc->readMiscReg(MISCREG_HDCR);
uint32_t hstr = xc->readMiscReg(MISCREG_HSTR);
uint32_t hcptr = xc->readMiscReg(MISCREG_HCPTR);
bool hypTrap = mcrMrc15TrapToHyp(miscReg, hcr, cpsr, scr, hdcr, hstr,
hcptr, iss);
if (hypTrap) {
return std::make_shared<HypervisorTrap>(machInst, iss,
EC_TRAPPED_CP15_MCR_MRC);
} else {
return std::make_shared<UndefinedInstruction>(machInst, false,
mnemonic);
}
}
std::string
McrMrcImplDefined::generateDisassembly(Addr pc,
const SymbolTable *symtab) const
{
return csprintf("%-10s (implementation defined)", mnemonic);
}