src/arch/x86/linux/se_workload.hh

   1 /*
   2  * Copyright 2020 Google Inc.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met: redistributions of source code must retain the above copyright
   7  * notice, this list of conditions and the following disclaimer;
   8  * redistributions in binary form must reproduce the above copyright
   9  * notice, this list of conditions and the following disclaimer in the
  10  * documentation and/or other materials provided with the distribution;
  11  * neither the name of the copyright holders nor the names of its
  12  * contributors may be used to endorse or promote products derived from
  13  * this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  18  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  19  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef __ARCH_X86_LINUX_SE_WORKLOAD_HH__
  29 #define __ARCH_X86_LINUX_SE_WORKLOAD_HH__
  30
  31 #include "arch/x86/linux/linux.hh"
  32 #include "params/X86EmuLinux.hh"
  33 #include "sim/se_workload.hh"
  34 #include "sim/syscall_abi.hh"
  35
  36 namespace X86ISA
  37 {
  38
  39 class EmuLinux : public SEWorkload
  40 {
  41   public:
  42     using Params = X86EmuLinuxParams;
  43
  44   protected:
  45     const Params &_params;
  46
  47   public:
  48     const Params &params() const { return _params; }
  49
  50     EmuLinux(const Params &p);
  51
  52     Loader::Arch getArch() const override { return Loader::X86_64; }
  53
  54     void syscall(ThreadContext *tc) override;
  55
  56     struct SyscallABI64 :
  57         public GenericSyscallABI64, public X86Linux::SyscallABI
  58     {
  59         static const std::vector<IntRegIndex> ArgumentRegs;
  60     };
  61
  62     struct SyscallABI32 :
  63         public GenericSyscallABI32, public X86Linux::SyscallABI
  64     {
  65         static const std::vector<IntRegIndex> ArgumentRegs;
  66     };
  67 };
  68
  69 } // namespace X86ISA
  70
  71 namespace GuestABI
  72 {
  73
  74 template <typename Arg>
  75 struct Argument<X86ISA::EmuLinux::SyscallABI32, Arg,
  76     typename std::enable_if<
  77         X86ISA::EmuLinux::SyscallABI32::IsWide<Arg>::value>::type>
  78 {
  79     using ABI = X86ISA::EmuLinux::SyscallABI32;
  80
  81     static Arg
  82     get(ThreadContext *tc, typename ABI::State &state)
  83     {
  84         panic_if(state + 1 >= ABI::ArgumentRegs.size(),
  85                 "Ran out of syscall argument registers.");
  86         auto low = ABI::ArgumentRegs[state++];
  87         auto high = ABI::ArgumentRegs[state++];
  88         return (Arg)ABI::mergeRegs(tc, low, high);
  89     }
  90 };
  91
  92 } // namespace GuestABI
  93
  94 #endif // __ARCH_X86_LINUX_SE_WORKLOAD_HH__