| /* |
| * Copyright (c) 2004-2005 The Regents of The University of Michigan |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Authors: Gabe Black |
| * Ali Saidi |
| * Korey Sewell |
| */ |
| |
| #include "arch/mips/isa_traits.hh" |
| #include "arch/mips/process.hh" |
| #include "base/loader/object_file.hh" |
| #include "base/misc.hh" |
| #include "cpu/thread_context.hh" |
| #include "sim/system.hh" |
| |
| using namespace std; |
| using namespace MipsISA; |
| |
| MipsLiveProcess::MipsLiveProcess(LiveProcessParams * params, |
| ObjectFile *objFile) |
| : LiveProcess(params, objFile) |
| { |
| // Set up stack. On MIPS, stack starts at the top of kuseg |
| // user address space. MIPS stack grows down from here |
| stack_base = 0x7FFFFFFF; |
| |
| // Set pointer for next thread stack. Reserve 8M for main stack. |
| next_thread_stack_base = stack_base - (8 * 1024 * 1024); |
| |
| // Set up break point (Top of Heap) |
| brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); |
| brk_point = roundUp(brk_point, VMPageSize); |
| |
| // Set up region for mmaps. For now, start at bottom of kuseg space. |
| mmap_start = mmap_end = 0x10000; |
| } |
| |
| void |
| MipsLiveProcess::startup() |
| { |
| argsInit(MachineBytes, VMPageSize); |
| } |
| |
| MipsISA::IntReg |
| MipsLiveProcess::getSyscallArg(ThreadContext *tc, int i) |
| { |
| assert(i < 6); |
| return tc->readIntReg(FirstArgumentReg + i); |
| } |
| |
| void |
| MipsLiveProcess::setSyscallArg(ThreadContext *tc, |
| int i, MipsISA::IntReg val) |
| { |
| assert(i < 6); |
| tc->setIntReg(FirstArgumentReg + i, val); |
| } |
| |
| void |
| MipsLiveProcess::setSyscallReturn(ThreadContext *tc, |
| SyscallReturn return_value) |
| { |
| if (return_value.successful()) { |
| // no error |
| tc->setIntReg(SyscallSuccessReg, 0); |
| tc->setIntReg(ReturnValueReg, return_value.value()); |
| } else { |
| // got an error, return details |
| tc->setIntReg(SyscallSuccessReg, (IntReg) -1); |
| tc->setIntReg(ReturnValueReg, -return_value.value()); |
| } |
| } |