blob: 47e41f2590595f03d3f4f6029b4d06cfb1bd54e2 [file] [log] [blame]
/*
* Copyright 2015 Ruslan Bukin <br@bsdpad.com>
*
* This software was developed by the University of Cambridge Computer
* Laboratory as part of the CTSRD Project, with support from the UK Higher
* Education Innovation Fund (HEIF).
*
* Copyright 2020 Google Inc.
*
* 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.
*/
#ifndef __ARCH_ARM_FREEBSD_SE_WORKLOAD_HH__
#define __ARCH_ARM_FREEBSD_SE_WORKLOAD_HH__
#include "arch/arm/freebsd/freebsd.hh"
#include "arch/arm/page_size.hh"
#include "arch/arm/regs/cc.hh"
#include "arch/arm/regs/int.hh"
#include "arch/arm/se_workload.hh"
#include "params/ArmEmuFreebsd.hh"
#include "sim/syscall_desc.hh"
namespace gem5
{
namespace ArmISA
{
class EmuFreebsd : public SEWorkload
{
public:
using Params = ArmEmuFreebsdParams;
EmuFreebsd(const Params &p) : SEWorkload(p, PageShift) {}
ByteOrder byteOrder() const override { return ByteOrder::little; }
struct BaseSyscallABI {};
struct SyscallABI32 : public SEWorkload::SyscallABI32,
public BaseSyscallABI
{};
struct SyscallABI64 : public SEWorkload::SyscallABI64,
public BaseSyscallABI
{};
void syscall(ThreadContext *tc) override;
};
} // namespace ArmISA
namespace guest_abi
{
template <typename ABI>
struct Result<ABI, SyscallReturn,
typename std::enable_if_t<std::is_base_of_v<
ArmISA::EmuFreebsd::BaseSyscallABI, ABI>>>
{
static void
store(ThreadContext *tc, const SyscallReturn &ret)
{
RegVal val;
if (ret.successful()) {
tc->setReg(ArmISA::cc_reg::C, (RegVal)0);
val = ret.returnValue();
} else {
tc->setReg(ArmISA::cc_reg::C, 1);
val = ret.encodedValue();
}
tc->setReg(ArmISA::ReturnValueReg, val);
if (ret.count() > 1)
tc->setReg(ArmISA::SyscallPseudoReturnReg, ret.value2());
}
};
} // namespace guest_abi
} // namespace gem5
#endif // __ARCH_ARM_FREEBSD_SE_WORKLOAD_HH__