fs_workload.hh

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#ifndef __ARCH_ARM_FS_WORKLOAD_HH__
#define __ARCH_ARM_FS_WORKLOAD_HH__
 
#include <memory>
#include <vector>
 
#include "arch/arm/aapcs32.hh"
#include "arch/arm/aapcs64.hh"
#include "arch/arm/remote_gdb.hh"
#include "kern/linux/events.hh"
#include "params/ArmFsWorkload.hh"
#include "sim/kernel_workload.hh"
#include "sim/sim_object.hh"
 
namespace gem5
{
 
namespace ArmISA
{
 
class SkipFunc : public SkipFuncBase
{
  public:
    using SkipFuncBase::SkipFuncBase;
    void returnFromFuncIn(ThreadContext *tc) override;
};
 
class FsWorkload : public KernelWorkload
{
  protected:
    std::vector<std::unique_ptr<loader::ObjectFile>> bootLoaders;
 
    loader::ObjectFile *bootldr = nullptr;
 
    Addr kernelEntry = 0;
 
    loader::ObjectFile *getBootLoader(loader::ObjectFile *const obj);
 
    template <template <class ABI, class Base> class FuncEvent,
             typename... Args>
    PCEvent *
    addSkipFunc(Args... args)
    {
        if (getArch() == loader::Arm64) {
            return addKernelFuncEvent<FuncEvent<Aapcs64, SkipFunc>>(
                    std::forward<Args>(args)...);
        } else {
            return addKernelFuncEvent<FuncEvent<Aapcs32, SkipFunc>>(
                    std::forward<Args>(args)...);
        }
    }
 
    template <template <class ABI, class Base> class FuncEvent,
             typename... Args>
    PCEvent *
    addSkipFuncOrPanic(Args... args)
    {
        if (getArch() == loader::Arm64) {
            return addKernelFuncEventOrPanic<FuncEvent<Aapcs64, SkipFunc>>(
                    std::forward<Args>(args)...);
        } else {
            return addKernelFuncEventOrPanic<FuncEvent<Aapcs32, SkipFunc>>(
                    std::forward<Args>(args)...);
        }
    }
 
  public:
    PARAMS(ArmFsWorkload);
 
    Addr
    getEntry() const override
    {
        if (bootldr)
            return bootldr->entryPoint();
        else
            return kernelEntry;
    }
 
    loader::Arch
    getArch() const override
    {
        if (bootldr)
            return bootldr->getArch();
        else if (kernelObj)
            return kernelObj->getArch();
        else
            return loader::Arm64;
    }
 
    ByteOrder byteOrder() const override { return ByteOrder::little; }
 
    FsWorkload(const Params &p);
 
    void initState() override;
 
    void
    setSystem(System *sys) override
    {
        KernelWorkload::setSystem(sys);
        gdb = BaseRemoteGDB::build<RemoteGDB>(
                params().remote_gdb_port, system);
    }
 
    Addr
    fixFuncEventAddr(Addr addr) const override
    {
        // Remove the low bit that thumb symbols have set
        // but that aren't actually odd aligned
        return addr & ~1;
    }
};
 
} // namespace ArmISA
} // namespace gem5
 
#endif // __ARCH_ARM_FS_WORKLOAD_HH__