se_workload.hh

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 * Copyright 2020 Google Inc.
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#ifndef __ARCH_X86_LINUX_SE_WORKLOAD_HH__
#define __ARCH_X86_LINUX_SE_WORKLOAD_HH__
 
#include "arch/x86/linux/linux.hh"
#include "arch/x86/regs/int.hh"
#include "arch/x86/remote_gdb.hh"
#include "params/X86EmuLinux.hh"
#include "sim/process.hh"
#include "sim/se_workload.hh"
#include "sim/syscall_abi.hh"
#include "sim/syscall_desc.hh"
 
namespace gem5
{
 
namespace X86ISA
{
 
class EmuLinux : public SEWorkload
{
  public:
    PARAMS(X86EmuLinux);
 
    EmuLinux(const Params &p);
 
    void
    setSystem(System *sys) override
    {
        SEWorkload::setSystem(sys);
        gdb = BaseRemoteGDB::build<RemoteGDB>(
                params().remote_gdb_port, system);
    }
 
    loader::Arch getArch() const override { return loader::X86_64; }
    ByteOrder byteOrder() const override { return ByteOrder::little; }
 
    void syscall(ThreadContext *tc) override;
    void event(ThreadContext *tc) override;
 
    void pageFault(ThreadContext *tc);
 
    struct SyscallABI64 :
        public GenericSyscallABI64, public X86Linux::SyscallABI
    {
        static const std::vector<RegId> ArgumentRegs;
    };
 
    struct SyscallABI32 :
        public GenericSyscallABI32, public X86Linux::SyscallABI
    {
        static const std::vector<RegId> ArgumentRegs;
    };
 
  private:
    static SyscallDescTable<SyscallABI64> syscallDescs64;
    static SyscallDescTable<SyscallABI32> syscallDescs32;
};
 
} // namespace X86ISA
 
namespace guest_abi
{
 
template <typename Arg>
struct Argument<X86ISA::EmuLinux::SyscallABI32, Arg,
    typename std::enable_if_t<std::is_integral_v<Arg> &&
        X86ISA::EmuLinux::SyscallABI32::IsWideV<Arg>>>
{
    using ABI = X86ISA::EmuLinux::SyscallABI32;
 
    static Arg
    get(ThreadContext *tc, typename ABI::State &state)
    {
        panic_if(state + 1 >= ABI::ArgumentRegs.size(),
                "Ran out of syscall argument registers.");
        auto low = ABI::ArgumentRegs[state++];
        auto high = ABI::ArgumentRegs[state++];
        return (Arg)ABI::mergeRegs(tc, low, high);
    }
};
 
} // namespace guest_abi
} // namespace gem5
 
#endif // __ARCH_X86_LINUX_SE_WORKLOAD_HH__