process.cc revision 6020
16019Shines@cs.fsu.edu/* 26019Shines@cs.fsu.edu * Copyright (c) 2007-2008 The Florida State University 36019Shines@cs.fsu.edu * All rights reserved. 46019Shines@cs.fsu.edu * 56019Shines@cs.fsu.edu * Redistribution and use in source and binary forms, with or without 66019Shines@cs.fsu.edu * modification, are permitted provided that the following conditions are 76019Shines@cs.fsu.edu * met: redistributions of source code must retain the above copyright 86019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer; 96019Shines@cs.fsu.edu * redistributions in binary form must reproduce the above copyright 106019Shines@cs.fsu.edu * notice, this list of conditions and the following disclaimer in the 116019Shines@cs.fsu.edu * documentation and/or other materials provided with the distribution; 126019Shines@cs.fsu.edu * neither the name of the copyright holders nor the names of its 136019Shines@cs.fsu.edu * contributors may be used to endorse or promote products derived from 146019Shines@cs.fsu.edu * this software without specific prior written permission. 156019Shines@cs.fsu.edu * 166019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276019Shines@cs.fsu.edu * 286019Shines@cs.fsu.edu * Authors: Stephen Hines 296019Shines@cs.fsu.edu */ 306019Shines@cs.fsu.edu 316019Shines@cs.fsu.edu#include "arch/arm/isa_traits.hh" 326019Shines@cs.fsu.edu#include "arch/arm/process.hh" 336019Shines@cs.fsu.edu#include "arch/arm/types.hh" 346019Shines@cs.fsu.edu#include "base/loader/elf_object.hh" 356019Shines@cs.fsu.edu#include "base/loader/object_file.hh" 366019Shines@cs.fsu.edu#include "base/misc.hh" 376019Shines@cs.fsu.edu#include "cpu/thread_context.hh" 386019Shines@cs.fsu.edu#include "mem/page_table.hh" 396019Shines@cs.fsu.edu#include "mem/translating_port.hh" 406019Shines@cs.fsu.edu#include "sim/process_impl.hh" 416019Shines@cs.fsu.edu#include "sim/system.hh" 426019Shines@cs.fsu.edu 436019Shines@cs.fsu.eduusing namespace std; 446019Shines@cs.fsu.eduusing namespace ArmISA; 456019Shines@cs.fsu.edu 466020Sgblack@eecs.umich.eduArmLiveProcess::ArmLiveProcess(LiveProcessParams *params, ObjectFile *objFile) 476019Shines@cs.fsu.edu : LiveProcess(params, objFile) 486019Shines@cs.fsu.edu{ 496019Shines@cs.fsu.edu stack_base = 0xc0000000L; 506019Shines@cs.fsu.edu 516019Shines@cs.fsu.edu // Set pointer for next thread stack. Reserve 8M for main stack. 526019Shines@cs.fsu.edu next_thread_stack_base = stack_base - (8 * 1024 * 1024); 536019Shines@cs.fsu.edu 546019Shines@cs.fsu.edu // Set up break point (Top of Heap) 556019Shines@cs.fsu.edu brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize(); 566019Shines@cs.fsu.edu brk_point = roundUp(brk_point, VMPageSize); 576019Shines@cs.fsu.edu 586019Shines@cs.fsu.edu // Set up region for mmaps. For now, start at bottom of kuseg space. 596019Shines@cs.fsu.edu mmap_start = mmap_end = 0x70000000L; 606019Shines@cs.fsu.edu} 616019Shines@cs.fsu.edu 626019Shines@cs.fsu.eduvoid 636019Shines@cs.fsu.eduArmLiveProcess::startup() 646019Shines@cs.fsu.edu{ 656019Shines@cs.fsu.edu argsInit(MachineBytes, VMPageSize); 666019Shines@cs.fsu.edu} 676019Shines@cs.fsu.edu 686019Shines@cs.fsu.eduvoid 696019Shines@cs.fsu.eduArmLiveProcess::copyStringArray32(std::vector<std::string> &strings, 706019Shines@cs.fsu.edu Addr array_ptr, Addr data_ptr, 716019Shines@cs.fsu.edu TranslatingPort* memPort) 726019Shines@cs.fsu.edu{ 736019Shines@cs.fsu.edu Addr data_ptr_swap; 746019Shines@cs.fsu.edu for (int i = 0; i < strings.size(); ++i) { 756019Shines@cs.fsu.edu data_ptr_swap = htog(data_ptr); 766019Shines@cs.fsu.edu memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr_swap, 776019Shines@cs.fsu.edu sizeof(uint32_t)); 786019Shines@cs.fsu.edu memPort->writeString(data_ptr, strings[i].c_str()); 796019Shines@cs.fsu.edu array_ptr += sizeof(uint32_t); 806019Shines@cs.fsu.edu data_ptr += strings[i].size() + 1; 816019Shines@cs.fsu.edu } 826019Shines@cs.fsu.edu // add NULL terminator 836019Shines@cs.fsu.edu data_ptr = 0; 846019Shines@cs.fsu.edu 856019Shines@cs.fsu.edu memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr, sizeof(uint32_t)); 866019Shines@cs.fsu.edu} 876019Shines@cs.fsu.edu 886019Shines@cs.fsu.eduvoid 896019Shines@cs.fsu.eduArmLiveProcess::argsInit(int intSize, int pageSize) 906019Shines@cs.fsu.edu{ 916019Shines@cs.fsu.edu // Overloaded argsInit so that we can fine-tune for ARM architecture 926019Shines@cs.fsu.edu Process::startup(); 936019Shines@cs.fsu.edu 946019Shines@cs.fsu.edu // load object file into target memory 956019Shines@cs.fsu.edu objFile->loadSections(initVirtMem); 966019Shines@cs.fsu.edu 976019Shines@cs.fsu.edu // Calculate how much space we need for arg & env arrays. 986019Shines@cs.fsu.edu int argv_array_size = intSize * (argv.size() + 1); 996019Shines@cs.fsu.edu int envp_array_size = intSize * (envp.size() + 1); 1006019Shines@cs.fsu.edu int arg_data_size = 0; 1016019Shines@cs.fsu.edu for (int i = 0; i < argv.size(); ++i) { 1026019Shines@cs.fsu.edu arg_data_size += argv[i].size() + 1; 1036019Shines@cs.fsu.edu } 1046019Shines@cs.fsu.edu int env_data_size = 0; 1056019Shines@cs.fsu.edu for (int i = 0; i < envp.size(); ++i) { 1066019Shines@cs.fsu.edu env_data_size += envp[i].size() + 1; 1076019Shines@cs.fsu.edu } 1086019Shines@cs.fsu.edu 1096019Shines@cs.fsu.edu int space_needed = 1106019Shines@cs.fsu.edu argv_array_size + envp_array_size + arg_data_size + env_data_size; 1116019Shines@cs.fsu.edu if (space_needed < 16*1024) 1126019Shines@cs.fsu.edu space_needed = 16*1024; 1136019Shines@cs.fsu.edu 1146019Shines@cs.fsu.edu // set bottom of stack 1156019Shines@cs.fsu.edu stack_min = stack_base - space_needed; 1166019Shines@cs.fsu.edu // align it 1176019Shines@cs.fsu.edu stack_min = roundDown(stack_min, pageSize); 1186019Shines@cs.fsu.edu stack_size = stack_base - stack_min; 1196019Shines@cs.fsu.edu // map memory 1206019Shines@cs.fsu.edu pTable->allocate(stack_min, roundUp(stack_size, pageSize)); 1216019Shines@cs.fsu.edu 1226019Shines@cs.fsu.edu // map out initial stack contents 1236019Shines@cs.fsu.edu Addr argv_array_base = stack_min + intSize; // room for argc 1246019Shines@cs.fsu.edu Addr envp_array_base = argv_array_base + argv_array_size; 1256019Shines@cs.fsu.edu Addr arg_data_base = envp_array_base + envp_array_size; 1266019Shines@cs.fsu.edu Addr env_data_base = arg_data_base + arg_data_size; 1276019Shines@cs.fsu.edu 1286019Shines@cs.fsu.edu // write contents to stack 1296019Shines@cs.fsu.edu uint64_t argc = argv.size(); 1306019Shines@cs.fsu.edu if (intSize == 8) 1316019Shines@cs.fsu.edu argc = htog((uint64_t)argc); 1326019Shines@cs.fsu.edu else if (intSize == 4) 1336019Shines@cs.fsu.edu argc = htog((uint32_t)argc); 1346019Shines@cs.fsu.edu else 1356019Shines@cs.fsu.edu panic("Unknown int size"); 1366019Shines@cs.fsu.edu 1376019Shines@cs.fsu.edu initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize); 1386019Shines@cs.fsu.edu 1396019Shines@cs.fsu.edu copyStringArray32(argv, argv_array_base, arg_data_base, initVirtMem); 1406019Shines@cs.fsu.edu copyStringArray32(envp, envp_array_base, env_data_base, initVirtMem); 1416019Shines@cs.fsu.edu 1426019Shines@cs.fsu.edu /* 1436019Shines@cs.fsu.edu //uint8_t insns[] = {0xe5, 0x9f, 0x00, 0x08, 0xe1, 0xa0, 0xf0, 0x0e}; 1446019Shines@cs.fsu.edu uint8_t insns[] = {0x08, 0x00, 0x9f, 0xe5, 0x0e, 0xf0, 0xa0, 0xe1}; 1456019Shines@cs.fsu.edu 1466019Shines@cs.fsu.edu initVirtMem->writeBlob(0xffff0fe0, insns, 8); 1476019Shines@cs.fsu.edu */ 1486019Shines@cs.fsu.edu 1496020Sgblack@eecs.umich.edu ThreadContext *tc = system->getThreadContext(contextIds[0]); 1506020Sgblack@eecs.umich.edu 1516020Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg1, argc); 1526020Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg2, argv_array_base); 1536020Sgblack@eecs.umich.edu tc->setIntReg(StackPointerReg, stack_min); 1546019Shines@cs.fsu.edu 1556019Shines@cs.fsu.edu Addr prog_entry = objFile->entryPoint(); 1566020Sgblack@eecs.umich.edu tc->setPC(prog_entry); 1576020Sgblack@eecs.umich.edu tc->setNextPC(prog_entry + sizeof(MachInst)); 1586019Shines@cs.fsu.edu} 1596019Shines@cs.fsu.edu 1606020Sgblack@eecs.umich.eduArmISA::IntReg 1616020Sgblack@eecs.umich.eduArmLiveProcess::getSyscallArg(ThreadContext *tc, int i) 1626020Sgblack@eecs.umich.edu{ 1636020Sgblack@eecs.umich.edu assert(i < 4); 1646020Sgblack@eecs.umich.edu return tc->readIntReg(ArgumentReg0 + i); 1656020Sgblack@eecs.umich.edu} 1666020Sgblack@eecs.umich.edu 1676020Sgblack@eecs.umich.eduvoid 1686020Sgblack@eecs.umich.eduArmLiveProcess::setSyscallArg(ThreadContext *tc, 1696020Sgblack@eecs.umich.edu int i, ArmISA::IntReg val) 1706020Sgblack@eecs.umich.edu{ 1716020Sgblack@eecs.umich.edu assert(i < 4); 1726020Sgblack@eecs.umich.edu tc->setIntReg(ArgumentReg0 + i, val); 1736020Sgblack@eecs.umich.edu} 1746020Sgblack@eecs.umich.edu 1756020Sgblack@eecs.umich.eduvoid 1766020Sgblack@eecs.umich.eduArmLiveProcess::setSyscallReturn(ThreadContext *tc, 1776020Sgblack@eecs.umich.edu SyscallReturn return_value) 1786020Sgblack@eecs.umich.edu{ 1796020Sgblack@eecs.umich.edu tc->setIntReg(ReturnValueReg, return_value.value()); 1806020Sgblack@eecs.umich.edu} 181