src/arch/sparc/linux/se_workload.cc

   1 /*
   2  * Copyright 2003-2005 The Regents of The University of Michigan
   3  * Copyright 2020 Google Inc.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "arch/sparc/linux/se_workload.hh"
  30
  31 #include <sys/syscall.h>
  32
  33 #include "arch/sparc/process.hh"
  34 #include "base/loader/object_file.hh"
  35 #include "base/trace.hh"
  36 #include "cpu/thread_context.hh"
  37 #include "sim/syscall_desc.hh"
  38
  39 namespace
  40 {
  41
  42 class LinuxLoader : public Process::Loader
  43 {
  44   public:
  45     Process *
  46     load(const ProcessParams &params, ::Loader::ObjectFile *obj) override
  47     {
  48         auto arch = obj->getArch();
  49         auto opsys = obj->getOpSys();
  50
  51         if (arch != ::Loader::SPARC64 && arch != ::Loader::SPARC32)
  52             return nullptr;
  53
  54         if (opsys == ::Loader::UnknownOpSys) {
  55             warn("Unknown operating system; assuming Linux.");
  56             opsys = ::Loader::Linux;
  57         }
  58
  59         if (opsys != ::Loader::Linux)
  60             return nullptr;
  61
  62         if (arch == ::Loader::SPARC64)
  63             return new Sparc64Process(params, obj);
  64         else
  65             return new Sparc32Process(params, obj);
  66     }
  67 };
  68
  69 LinuxLoader loader;
  70
  71 } // anonymous namespace
  72
  73 namespace SparcISA
  74 {
  75
  76 EmuLinux::EmuLinux(const Params &p) : SEWorkload(p), _params(p)
  77 {}
  78
  79 void
  80 EmuLinux::handleTrap(ThreadContext *tc, int trapNum)
  81 {
  82     if (is64(tc)) {
  83         switch (trapNum) {
  84           // case 0x10: // Linux 32 bit syscall trap
  85           case 0x6d: // Linux 64 bit syscall trap
  86             syscall64(tc);
  87             return;
  88           case 0x6e: // Linux 64 bit getcontext trap
  89             warn("The getcontext trap is not implemented on SPARC");
  90             return;
  91           case 0x6f: // Linux 64 bit setcontext trap
  92             panic("The setcontext trap is not implemented on SPARC");
  93           default:
  94             break;
  95         }
  96     } else {
  97         switch (trapNum) {
  98           case 0x10: //Linux 32 bit syscall trap
  99             syscall32(tc);
 100             return;
 101           default:
 102             break;
 103         }
 104     }
 105     SEWorkload::handleTrap(tc, trapNum);
 106 }
 107
 108 void
 109 EmuLinux::syscall32(ThreadContext *tc)
 110 {
 111     Process *process = tc->getProcessPtr();
 112     // Call the syscall function in the base Process class to update stats.
 113     // This will move into the base SEWorkload function at some point.
 114     process->Process::syscall(tc);
 115
 116     syscall32Descs.get(tc->readIntReg(1))->doSyscall(tc);
 117 }
 118
 119 void
 120 EmuLinux::syscall64(ThreadContext *tc)
 121 {
 122     Process *process = tc->getProcessPtr();
 123     // Call the syscall function in the base Process class to update stats.
 124     // This will move into the base SEWorkload function at some point.
 125     process->Process::syscall(tc);
 126
 127     syscallDescs.get(tc->readIntReg(1))->doSyscall(tc);
 128 }
 129
 130 void
 131 EmuLinux::syscall(ThreadContext *tc)
 132 {
 133     if (is64(tc))
 134         syscall64(tc);
 135     else
 136         syscall32(tc);
 137 }
 138
 139 } // namespace SparcISA