src/arch/sparc/linux/process.cc

   1 /*
   2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   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  * Authors: Steve Reinhardt
  29  *          Gabe Black
  30  *          Ali Saidi
  31  */
  32
  33 #include "arch/sparc/linux/process.hh"
  34 #include "arch/sparc/isa_traits.hh"
  35 #include "arch/sparc/registers.hh"
  36 #include "base/trace.hh"
  37 #include "cpu/thread_context.hh"
  38 #include "kern/linux/linux.hh"
  39 #include "sim/process.hh"
  40 #include "sim/syscall_emul.hh"
  41
  42 using namespace std;
  43 using namespace SparcISA;
  44
  45 SyscallDesc*
  46 SparcLinuxProcess::getDesc(int callnum)
  47 {
  48     if (callnum < 0 || callnum >= Num_Syscall_Descs)
  49         return NULL;
  50     return &syscallDescs[callnum];
  51 }
  52
  53 SyscallDesc*
  54 SparcLinuxProcess::getDesc32(int callnum)
  55 {
  56     if (callnum < 0 || callnum >= Num_Syscall32_Descs)
  57         return NULL;
  58     return &syscall32Descs[callnum];
  59 }
  60
  61 Sparc32LinuxProcess::Sparc32LinuxProcess(LiveProcessParams * params,
  62                                          ObjectFile *objFile)
  63     : Sparc32LiveProcess(params, objFile)
  64 {}
  65
  66 void Sparc32LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
  67 {
  68     switch (trapNum) {
  69       case 0x10: //Linux 32 bit syscall trap
  70         tc->syscall(tc->readIntReg(1));
  71         break;
  72       default:
  73         SparcLiveProcess::handleTrap(trapNum, tc);
  74     }
  75 }
  76
  77 Sparc64LinuxProcess::Sparc64LinuxProcess(LiveProcessParams * params,
  78                                          ObjectFile *objFile)
  79     : Sparc64LiveProcess(params, objFile)
  80 {}
  81
  82 void Sparc64LinuxProcess::handleTrap(int trapNum, ThreadContext *tc)
  83 {
  84     switch (trapNum) {
  85       // case 0x10: // Linux 32 bit syscall trap
  86       case 0x6d: // Linux 64 bit syscall trap
  87         tc->syscall(tc->readIntReg(1));
  88         break;
  89       default:
  90         SparcLiveProcess::handleTrap(trapNum, tc);
  91     }
  92 }