se_workload.hh

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/*
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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 "params/X86EmuLinux.hh"
#include "sim/process.hh"
#include "sim/se_workload.hh"
#include "sim/syscall_abi.hh"
#include "sim/syscall_desc.hh"
 
namespace X86ISA
{
 
class EmuLinux : public SEWorkload
{
  public:
    using Params = X86EmuLinuxParams;
 
    EmuLinux(const Params &p);
 
    ::Loader::Arch getArch() const override { return ::Loader::X86_64; }
 
    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<IntRegIndex> ArgumentRegs;
    };
 
    struct SyscallABI32 :
        public GenericSyscallABI32, public X86Linux::SyscallABI
    {
        static const std::vector<IntRegIndex> ArgumentRegs;
    };
 
  private:
    static SyscallDescTable<SyscallABI64> syscallDescs64;
    static SyscallDescTable<SyscallABI32> syscallDescs32;
};
 
} // namespace X86ISA
 
namespace GuestABI
{
 
template <typename Arg>
struct Argument<X86ISA::EmuLinux::SyscallABI32, Arg,
    typename std::enable_if_t<std::is_integral<Arg>::value &&
        X86ISA::EmuLinux::SyscallABI32::IsWide<Arg>::value>>
{
    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 GuestABI
 
#endif // __ARCH_X86_LINUX_SE_WORKLOAD_HH__