process.cc revision 5154
12SN/A/* 21762SN/A * Copyright (c) 2001-2005 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Nathan Binkert 292665Ssaidi@eecs.umich.edu * Steve Reinhardt 302665Ssaidi@eecs.umich.edu * Ali Saidi 312SN/A */ 322SN/A 332SN/A#include <unistd.h> 342SN/A#include <fcntl.h> 352SN/A 362SN/A#include <string> 373971Sgblack@eecs.umich.edu 3856SN/A#include "arch/remote_gdb.hh" 3956SN/A#include "base/intmath.hh" 401158SN/A#include "base/loader/object_file.hh" 41146SN/A#include "base/loader/symtab.hh" 421858SN/A#include "base/statistics.hh" 432680Sktlim@umich.edu#include "config/full_system.hh" 442378SN/A#include "cpu/thread_context.hh" 452522SN/A#include "mem/page_table.hh" 462401SN/A#include "mem/physical.hh" 475154Sgblack@eecs.umich.edu#include "mem/translating_port.hh" 484762Snate@binkert.org#include "params/Process.hh" 495512SMichael.Adler@intel.com#include "params/LiveProcess.hh" 50360SN/A#include "sim/process.hh" 514434Ssaidi@eecs.umich.edu#include "sim/process_impl.hh" 52695SN/A#include "sim/stats.hh" 532093SN/A#include "sim/syscall_emul.hh" 542378SN/A#include "sim/system.hh" 552SN/A 562715Sstever@eecs.umich.edu#include "arch/isa_specific.hh" 572715Sstever@eecs.umich.edu#if THE_ISA == ALPHA_ISA 582715Sstever@eecs.umich.edu#include "arch/alpha/linux/process.hh" 592715Sstever@eecs.umich.edu#include "arch/alpha/tru64/process.hh" 602715Sstever@eecs.umich.edu#elif THE_ISA == SPARC_ISA 612715Sstever@eecs.umich.edu#include "arch/sparc/linux/process.hh" 622715Sstever@eecs.umich.edu#include "arch/sparc/solaris/process.hh" 632715Sstever@eecs.umich.edu#elif THE_ISA == MIPS_ISA 642715Sstever@eecs.umich.edu#include "arch/mips/linux/process.hh" 655335Shines@cs.fsu.edu#elif THE_ISA == X86_ISA 665335Shines@cs.fsu.edu#include "arch/x86/linux/process.hh" 674157Sgblack@eecs.umich.edu#else 684166Sgblack@eecs.umich.edu#error "THE_ISA not set" 692715Sstever@eecs.umich.edu#endif 702715Sstever@eecs.umich.edu 712715Sstever@eecs.umich.edu 722715Sstever@eecs.umich.eduusing namespace std; 732715Sstever@eecs.umich.eduusing namespace TheISA; 742SN/A 752107SN/A// 762SN/A// The purpose of this code is to fake the loader & syscall mechanism 772SN/A// when there's no OS: thus there's no resone to use it in FULL_SYSTEM 782SN/A// mode when we do have an OS 792SN/A// 802SN/A#if FULL_SYSTEM 812SN/A#error "process.cc not compatible with FULL_SYSTEM" 821858SN/A#endif 83360SN/A 842SN/A// current number of allocated processes 852SN/Aint num_processes = 0; 862SN/A 872SN/AProcess::Process(ProcessParams * params) 882SN/A : SimObject(params), system(params->system), 895758Shsul@eecs.umich.edu max_stack_size(params->max_stack_size) 905771Shsul@eecs.umich.edu{ 915758Shsul@eecs.umich.edu string in = params->input; 925758Shsul@eecs.umich.edu string out = params->output; 935758Shsul@eecs.umich.edu 945758Shsul@eecs.umich.edu // initialize file descriptors to default: same as simulator 955758Shsul@eecs.umich.edu int stdin_fd, stdout_fd, stderr_fd; 965771Shsul@eecs.umich.edu 975771Shsul@eecs.umich.edu if (in == "stdin" || in == "cin") 985758Shsul@eecs.umich.edu stdin_fd = STDIN_FILENO; 995154Sgblack@eecs.umich.edu else if (in == "None") 1005183Ssaidi@eecs.umich.edu stdin_fd = -1; 1015154Sgblack@eecs.umich.edu else 1022SN/A stdin_fd = Process::openInputFile(in); 1035154Sgblack@eecs.umich.edu 1045154Sgblack@eecs.umich.edu if (out == "stdout" || out == "cout") 1055514SMichael.Adler@intel.com stdout_fd = STDOUT_FILENO; 1065154Sgblack@eecs.umich.edu else if (out == "stderr" || out == "cerr") 1075154Sgblack@eecs.umich.edu stdout_fd = STDERR_FILENO; 1085154Sgblack@eecs.umich.edu else if (out == "None") 1095154Sgblack@eecs.umich.edu stdout_fd = -1; 1105154Sgblack@eecs.umich.edu else 1115154Sgblack@eecs.umich.edu stdout_fd = Process::openOutputFile(out); 1125154Sgblack@eecs.umich.edu 1135154Sgblack@eecs.umich.edu stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO; 1145154Sgblack@eecs.umich.edu 1155154Sgblack@eecs.umich.edu M5_pid = system->allocatePID(); 1165154Sgblack@eecs.umich.edu // initialize first 3 fds (stdin, stdout, stderr) 1175154Sgblack@eecs.umich.edu fd_map[STDIN_FILENO] = stdin_fd; 1185154Sgblack@eecs.umich.edu fd_map[STDOUT_FILENO] = stdout_fd; 1195154Sgblack@eecs.umich.edu fd_map[STDERR_FILENO] = stderr_fd; 1205154Sgblack@eecs.umich.edu 1215154Sgblack@eecs.umich.edu // mark remaining fds as free 1225154Sgblack@eecs.umich.edu for (int i = 3; i <= MAX_FD; ++i) { 1235154Sgblack@eecs.umich.edu fd_map[i] = -1; 1245154Sgblack@eecs.umich.edu } 1255154Sgblack@eecs.umich.edu 1265514SMichael.Adler@intel.com mmap_start = mmap_end = 0; 1275514SMichael.Adler@intel.com nxm_start = nxm_end = 0; 1285514SMichael.Adler@intel.com pTable = new PageTable(system); 1295514SMichael.Adler@intel.com // other parameters will be initialized when the program is loaded 1305514SMichael.Adler@intel.com} 1315514SMichael.Adler@intel.com 1325514SMichael.Adler@intel.com 1335514SMichael.Adler@intel.comvoid 1345514SMichael.Adler@intel.comProcess::regStats() 1355514SMichael.Adler@intel.com{ 1365154Sgblack@eecs.umich.edu using namespace Stats; 1374997Sgblack@eecs.umich.edu 1382SN/A num_syscalls 1395282Srstrong@cs.ucsd.edu .name(name() + ".PROG:num_syscalls") 1405282Srstrong@cs.ucsd.edu .desc("Number of system calls") 1415282Srstrong@cs.ucsd.edu ; 1425282Srstrong@cs.ucsd.edu} 1435282Srstrong@cs.ucsd.edu 1445282Srstrong@cs.ucsd.edu// 1455282Srstrong@cs.ucsd.edu// static helper functions 1465282Srstrong@cs.ucsd.edu// 1475282Srstrong@cs.ucsd.eduint 1485282Srstrong@cs.ucsd.eduProcess::openInputFile(const string &filename) 1495282Srstrong@cs.ucsd.edu{ 1505282Srstrong@cs.ucsd.edu int fd = open(filename.c_str(), O_RDONLY); 1515282Srstrong@cs.ucsd.edu 1525282Srstrong@cs.ucsd.edu if (fd == -1) { 1535282Srstrong@cs.ucsd.edu perror(NULL); 1545282Srstrong@cs.ucsd.edu cerr << "unable to open \"" << filename << "\" for reading\n"; 1555514SMichael.Adler@intel.com fatal("can't open input file"); 1565282Srstrong@cs.ucsd.edu } 1575282Srstrong@cs.ucsd.edu 1585282Srstrong@cs.ucsd.edu return fd; 1595282Srstrong@cs.ucsd.edu} 1602SN/A 1612SN/A 1622SN/Aint 1635282Srstrong@cs.ucsd.eduProcess::openOutputFile(const string &filename) 1645282Srstrong@cs.ucsd.edu{ 1652SN/A int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774); 1662SN/A 1671450SN/A if (fd == -1) { 1681514SN/A perror(NULL); 1695184Sgblack@eecs.umich.edu cerr << "unable to open \"" << filename << "\" for writing\n"; 1702SN/A fatal("can't open output file"); 1712SN/A } 1722SN/A 1732378SN/A return fd; 1742SN/A} 1752SN/A 1762SN/A 177729SN/Aint 1782SN/AProcess::registerThreadContext(ThreadContext *tc) 1792SN/A{ 1802SN/A // add to list 1812SN/A int myIndex = threadContexts.size(); 1822SN/A threadContexts.push_back(tc); 1832SN/A 1842SN/A RemoteGDB *rgdb = new RemoteGDB(system, tc); 1852SN/A GDBListener *gdbl = new GDBListener(rgdb, 7000 + myIndex); 1862SN/A gdbl->listen(); 1872SN/A //gdbl->accept(); 1882SN/A 1892SN/A remoteGDB.push_back(rgdb); 1902SN/A 1912SN/A // return CPU number to caller 1922SN/A return myIndex; 1932SN/A} 1942SN/A 1952SN/Avoid 1962SN/AProcess::startup() 1972SN/A{ 1982SN/A if (threadContexts.empty()) 1992SN/A fatal("Process %s is not associated with any CPUs!\n", name()); 2002SN/A 2012SN/A // first thread context for this process... initialize & enable 2022SN/A ThreadContext *tc = threadContexts[0]; 2032SN/A 2042SN/A // mark this context as active so it will start ticking. 2052SN/A tc->activate(0); 2065514SMichael.Adler@intel.com 2072SN/A Port *mem_port; 2082SN/A mem_port = system->physmem->getPort("functional"); 2092SN/A initVirtMem = new TranslatingPort("process init port", this, 2102SN/A TranslatingPort::Always); 2112SN/A mem_port->setPeer(initVirtMem); 2122SN/A initVirtMem->setPeer(mem_port); 2132SN/A} 2142SN/A 2152SN/Avoid 2162SN/AProcess::replaceThreadContext(ThreadContext *tc, int tcIndex) 2175713Shsul@eecs.umich.edu{ 2185713Shsul@eecs.umich.edu if (tcIndex >= threadContexts.size()) { 2192SN/A panic("replaceThreadContext: bad tcIndex, %d >= %d\n", 2205713Shsul@eecs.umich.edu tcIndex, threadContexts.size()); 2215713Shsul@eecs.umich.edu } 2225713Shsul@eecs.umich.edu 2235713Shsul@eecs.umich.edu threadContexts[tcIndex] = tc; 2246029Ssteve.reinhardt@amd.com} 2255713Shsul@eecs.umich.edu 2265713Shsul@eecs.umich.edu// map simulator fd sim_fd to target fd tgt_fd 2275713Shsul@eecs.umich.eduvoid 2285512SMichael.Adler@intel.comProcess::dup_fd(int sim_fd, int tgt_fd) 2295713Shsul@eecs.umich.edu{ 2302SN/A if (tgt_fd < 0 || tgt_fd > MAX_FD) 2312SN/A panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd); 2321395SN/A 2331395SN/A fd_map[tgt_fd] = sim_fd; 2341395SN/A} 2355713Shsul@eecs.umich.edu 2365713Shsul@eecs.umich.edu 2372378SN/A// generate new target fd for sim_fd 2382680Sktlim@umich.eduint 2395713Shsul@eecs.umich.eduProcess::alloc_fd(int sim_fd) 2401395SN/A{ 2411634SN/A // in case open() returns an error, don't allocate a new fd 2422680Sktlim@umich.edu if (sim_fd == -1) 2432462SN/A return -1; 2442519SN/A 2452519SN/A // find first free target fd 2464434Ssaidi@eecs.umich.edu for (int free_fd = 0; free_fd < MAX_FD; ++free_fd) { 2474434Ssaidi@eecs.umich.edu if (fd_map[free_fd] == -1) { 2482519SN/A fd_map[free_fd] = sim_fd; 2492519SN/A return free_fd; 2501395SN/A } 2512SN/A } 2522SN/A 2532SN/A panic("Process::alloc_fd: out of file descriptors!"); 2542SN/A} 2552SN/A 2562SN/A 2572SN/A// free target fd (e.g., after close) 2582SN/Avoid 2595282Srstrong@cs.ucsd.eduProcess::free_fd(int tgt_fd) 2605282Srstrong@cs.ucsd.edu{ 2612SN/A if (fd_map[tgt_fd] == -1) 2622SN/A warn("Process::free_fd: request to free unused fd %d", tgt_fd); 2632SN/A 2642SN/A fd_map[tgt_fd] = -1; 2652SN/A} 2665282Srstrong@cs.ucsd.edu 2672SN/A 2682SN/A// look up simulator fd for given target fd 2692SN/Aint 2702SN/AProcess::sim_fd(int tgt_fd) 2712SN/A{ 2722SN/A if (tgt_fd > MAX_FD) 2735282Srstrong@cs.ucsd.edu return -1; 2745282Srstrong@cs.ucsd.edu 2755282Srstrong@cs.ucsd.edu return fd_map[tgt_fd]; 2765282Srstrong@cs.ucsd.edu} 2775282Srstrong@cs.ucsd.edu 2785282Srstrong@cs.ucsd.edubool 2795282Srstrong@cs.ucsd.eduProcess::checkAndAllocNextPage(Addr vaddr) 2805282Srstrong@cs.ucsd.edu{ 2815282Srstrong@cs.ucsd.edu // if this is an initial write we might not have 2825282Srstrong@cs.ucsd.edu if (vaddr >= stack_min && vaddr < stack_base) { 2831970SN/A pTable->allocate(roundDown(vaddr, VMPageSize), VMPageSize); 2841970SN/A return true; 2852SN/A } 2862SN/A 2871970SN/A // We've accessed the next page of the stack, so extend the stack 2881970SN/A // to cover it. 2892SN/A if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) { 2901970SN/A while (vaddr < stack_min) { 2911970SN/A stack_min -= TheISA::PageBytes; 2921970SN/A if(stack_base - stack_min > max_stack_size) 2931970SN/A fatal("Maximum stack size exceeded\n"); 2941970SN/A if(stack_base - stack_min > 8*1024*1024) 2955282Srstrong@cs.ucsd.edu fatal("Over max stack size for one thread\n"); 2965282Srstrong@cs.ucsd.edu pTable->allocate(stack_min, TheISA::PageBytes); 2971970SN/A warn("Increasing stack size by one page."); 2981970SN/A }; 2995282Srstrong@cs.ucsd.edu return true; 3005282Srstrong@cs.ucsd.edu } 3015282Srstrong@cs.ucsd.edu return false; 3025282Srstrong@cs.ucsd.edu} 3035282Srstrong@cs.ucsd.edu 3045282Srstrong@cs.ucsd.eduvoid 3055282Srstrong@cs.ucsd.eduProcess::serialize(std::ostream &os) 3062SN/A{ 3072SN/A SERIALIZE_SCALAR(initialContextLoaded); 3082SN/A SERIALIZE_SCALAR(brk_point); 3092SN/A SERIALIZE_SCALAR(stack_base); 3102SN/A SERIALIZE_SCALAR(stack_size); 3112SN/A SERIALIZE_SCALAR(stack_min); 3122SN/A SERIALIZE_SCALAR(next_thread_stack_base); 3132SN/A SERIALIZE_SCALAR(mmap_start); 3142SN/A SERIALIZE_SCALAR(mmap_end); 3152SN/A SERIALIZE_SCALAR(nxm_start); 3165282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(nxm_end); 3172SN/A SERIALIZE_ARRAY(fd_map, MAX_FD); 3182SN/A 3195282Srstrong@cs.ucsd.edu pTable->serialize(os); 3205282Srstrong@cs.ucsd.edu} 3215282Srstrong@cs.ucsd.edu 3225282Srstrong@cs.ucsd.eduvoid 3235282Srstrong@cs.ucsd.eduProcess::unserialize(Checkpoint *cp, const std::string §ion) 3245282Srstrong@cs.ucsd.edu{ 3255282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(initialContextLoaded); 3265282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(brk_point); 3274434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(stack_base); 3284434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(stack_size); 3294434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(stack_min); 3304434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(next_thread_stack_base); 3314434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(mmap_start); 3324434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(mmap_end); 3334434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(nxm_start); 3344434Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(nxm_end); 3354434Ssaidi@eecs.umich.edu UNSERIALIZE_ARRAY(fd_map, MAX_FD); 3364434Ssaidi@eecs.umich.edu 3374434Ssaidi@eecs.umich.edu pTable->unserialize(cp, section); 3385154Sgblack@eecs.umich.edu} 3395154Sgblack@eecs.umich.edu 3405154Sgblack@eecs.umich.edu 3415154Sgblack@eecs.umich.edu//////////////////////////////////////////////////////////////////////// 3425154Sgblack@eecs.umich.edu// 3435154Sgblack@eecs.umich.edu// LiveProcess member definitions 3445154Sgblack@eecs.umich.edu// 3455154Sgblack@eecs.umich.edu//////////////////////////////////////////////////////////////////////// 3465823Ssaidi@eecs.umich.edu 3475154Sgblack@eecs.umich.edu 3484434Ssaidi@eecs.umich.eduLiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile) 3494434Ssaidi@eecs.umich.edu : Process(params), objFile(_objFile), 3504434Ssaidi@eecs.umich.edu argv(params->cmd), envp(params->env), cwd(params->cwd) 3514434Ssaidi@eecs.umich.edu{ 3524434Ssaidi@eecs.umich.edu __uid = params->uid; 3535282Srstrong@cs.ucsd.edu __euid = params->euid; 3545282Srstrong@cs.ucsd.edu __gid = params->gid; 3555282Srstrong@cs.ucsd.edu __egid = params->egid; 3565282Srstrong@cs.ucsd.edu __pid = params->pid; 3575282Srstrong@cs.ucsd.edu __ppid = params->ppid; 3585282Srstrong@cs.ucsd.edu 3595282Srstrong@cs.ucsd.edu prog_fname = params->cmd[0]; 3605282Srstrong@cs.ucsd.edu 3615514SMichael.Adler@intel.com // load up symbols, if any... these may be used for debugging or 3625282Srstrong@cs.ucsd.edu // profiling. 3635282Srstrong@cs.ucsd.edu if (!debugSymbolTable) { 3645282Srstrong@cs.ucsd.edu debugSymbolTable = new SymbolTable(); 3655282Srstrong@cs.ucsd.edu if (!objFile->loadGlobalSymbols(debugSymbolTable) || 3665282Srstrong@cs.ucsd.edu !objFile->loadLocalSymbols(debugSymbolTable)) { 3675282Srstrong@cs.ucsd.edu // didn't load any symbols 3685282Srstrong@cs.ucsd.edu delete debugSymbolTable; 3695282Srstrong@cs.ucsd.edu debugSymbolTable = NULL; 3705282Srstrong@cs.ucsd.edu } 3715282Srstrong@cs.ucsd.edu } 3725282Srstrong@cs.ucsd.edu} 3735282Srstrong@cs.ucsd.edu 3745282Srstrong@cs.ucsd.eduvoid 3755282Srstrong@cs.ucsd.eduLiveProcess::argsInit(int intSize, int pageSize) 3765282Srstrong@cs.ucsd.edu{ 3775282Srstrong@cs.ucsd.edu Process::startup(); 3785282Srstrong@cs.ucsd.edu 3795282Srstrong@cs.ucsd.edu // load object file into target memory 3805282Srstrong@cs.ucsd.edu objFile->loadSections(initVirtMem); 3815282Srstrong@cs.ucsd.edu 3825282Srstrong@cs.ucsd.edu // Calculate how much space we need for arg & env arrays. 3835282Srstrong@cs.ucsd.edu int argv_array_size = intSize * (argv.size() + 1); 3845282Srstrong@cs.ucsd.edu int envp_array_size = intSize * (envp.size() + 1); 3855514SMichael.Adler@intel.com int arg_data_size = 0; 3865514SMichael.Adler@intel.com for (int i = 0; i < argv.size(); ++i) { 3875282Srstrong@cs.ucsd.edu arg_data_size += argv[i].size() + 1; 3885282Srstrong@cs.ucsd.edu } 3895514SMichael.Adler@intel.com int env_data_size = 0; 3905514SMichael.Adler@intel.com for (int i = 0; i < envp.size(); ++i) { 3915514SMichael.Adler@intel.com env_data_size += envp[i].size() + 1; 3925514SMichael.Adler@intel.com } 3935514SMichael.Adler@intel.com 3945514SMichael.Adler@intel.com int space_needed = 3955514SMichael.Adler@intel.com argv_array_size + envp_array_size + arg_data_size + env_data_size; 3965514SMichael.Adler@intel.com if (space_needed < 32*1024) 3975514SMichael.Adler@intel.com space_needed = 32*1024; 3985514SMichael.Adler@intel.com 3995514SMichael.Adler@intel.com // set bottom of stack 4005514SMichael.Adler@intel.com stack_min = stack_base - space_needed; 4015514SMichael.Adler@intel.com // align it 4025282Srstrong@cs.ucsd.edu stack_min = roundDown(stack_min, pageSize); 4035282Srstrong@cs.ucsd.edu stack_size = stack_base - stack_min; 4045282Srstrong@cs.ucsd.edu // map memory 4055282Srstrong@cs.ucsd.edu pTable->allocate(stack_min, roundUp(stack_size, pageSize)); 4065282Srstrong@cs.ucsd.edu 4075282Srstrong@cs.ucsd.edu // map out initial stack contents 4085282Srstrong@cs.ucsd.edu Addr argv_array_base = stack_min + intSize; // room for argc 4095282Srstrong@cs.ucsd.edu Addr envp_array_base = argv_array_base + argv_array_size; 4105282Srstrong@cs.ucsd.edu Addr arg_data_base = envp_array_base + envp_array_size; 4115282Srstrong@cs.ucsd.edu Addr env_data_base = arg_data_base + arg_data_size; 4125282Srstrong@cs.ucsd.edu 4135282Srstrong@cs.ucsd.edu // write contents to stack 4145282Srstrong@cs.ucsd.edu uint64_t argc = argv.size(); 4155282Srstrong@cs.ucsd.edu if (intSize == 8) 4165282Srstrong@cs.ucsd.edu argc = htog((uint64_t)argc); 4175282Srstrong@cs.ucsd.edu else if (intSize == 4) 4185282Srstrong@cs.ucsd.edu argc = htog((uint32_t)argc); 4195282Srstrong@cs.ucsd.edu else 4205282Srstrong@cs.ucsd.edu panic("Unknown int size"); 4215282Srstrong@cs.ucsd.edu 4225282Srstrong@cs.ucsd.edu initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize); 4235282Srstrong@cs.ucsd.edu 4245282Srstrong@cs.ucsd.edu copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem); 4255282Srstrong@cs.ucsd.edu copyStringArray(envp, envp_array_base, env_data_base, initVirtMem); 4265282Srstrong@cs.ucsd.edu 4275282Srstrong@cs.ucsd.edu assert(NumArgumentRegs >= 2); 4285282Srstrong@cs.ucsd.edu threadContexts[0]->setIntReg(ArgumentReg[0], argc); 4295282Srstrong@cs.ucsd.edu threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base); 4305282Srstrong@cs.ucsd.edu threadContexts[0]->setIntReg(StackPointerReg, stack_min); 4315282Srstrong@cs.ucsd.edu 4325282Srstrong@cs.ucsd.edu Addr prog_entry = objFile->entryPoint(); 4335282Srstrong@cs.ucsd.edu threadContexts[0]->setPC(prog_entry); 4345282Srstrong@cs.ucsd.edu threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst)); 4355282Srstrong@cs.ucsd.edu 4365282Srstrong@cs.ucsd.edu#if THE_ISA != ALPHA_ISA //e.g. MIPS or Sparc 4375282Srstrong@cs.ucsd.edu threadContexts[0]->setNextNPC(prog_entry + (2 * sizeof(MachInst))); 4385282Srstrong@cs.ucsd.edu#endif 4395282Srstrong@cs.ucsd.edu 4405282Srstrong@cs.ucsd.edu num_processes++; 4415282Srstrong@cs.ucsd.edu} 4425282Srstrong@cs.ucsd.edu 4435282Srstrong@cs.ucsd.eduvoid 4445282Srstrong@cs.ucsd.eduLiveProcess::syscall(int64_t callnum, ThreadContext *tc) 4455282Srstrong@cs.ucsd.edu{ 4465282Srstrong@cs.ucsd.edu num_syscalls++; 4475282Srstrong@cs.ucsd.edu 4485282Srstrong@cs.ucsd.edu SyscallDesc *desc = getDesc(callnum); 4495282Srstrong@cs.ucsd.edu if (desc == NULL) 4505282Srstrong@cs.ucsd.edu fatal("Syscall %d out of range", callnum); 4515282Srstrong@cs.ucsd.edu 4525282Srstrong@cs.ucsd.edu desc->doSyscall(callnum, this, tc); 4535282Srstrong@cs.ucsd.edu} 4545282Srstrong@cs.ucsd.edu 4555282Srstrong@cs.ucsd.eduLiveProcess * 4565282Srstrong@cs.ucsd.eduLiveProcess::create(LiveProcessParams * params) 4575282Srstrong@cs.ucsd.edu{ 4585282Srstrong@cs.ucsd.edu LiveProcess *process = NULL; 4595282Srstrong@cs.ucsd.edu 4605282Srstrong@cs.ucsd.edu string executable = 4615282Srstrong@cs.ucsd.edu params->executable == "" ? params->cmd[0] : params->executable; 4625282Srstrong@cs.ucsd.edu ObjectFile *objFile = createObjectFile(executable); 4635282Srstrong@cs.ucsd.edu if (objFile == NULL) { 4645282Srstrong@cs.ucsd.edu fatal("Can't load object file %s", executable); 4655282Srstrong@cs.ucsd.edu } 4665282Srstrong@cs.ucsd.edu 4675282Srstrong@cs.ucsd.edu if (objFile->isDynamic()) 4685282Srstrong@cs.ucsd.edu fatal("Object file is a dynamic executable however only static " 4695282Srstrong@cs.ucsd.edu "executables are supported!\n Please recompile your " 4705282Srstrong@cs.ucsd.edu "executable as a static binary and try again.\n"); 4715282Srstrong@cs.ucsd.edu 4725282Srstrong@cs.ucsd.edu#if THE_ISA == ALPHA_ISA 4735282Srstrong@cs.ucsd.edu if (objFile->hasTLS()) 4745282Srstrong@cs.ucsd.edu fatal("Object file has a TLS section and single threaded TLS is not\n" 4755282Srstrong@cs.ucsd.edu " currently supported for Alpha! Please recompile your " 4765282Srstrong@cs.ucsd.edu "executable with \n a non-TLS toolchain.\n"); 4775282Srstrong@cs.ucsd.edu 4785282Srstrong@cs.ucsd.edu if (objFile->getArch() != ObjectFile::Alpha) 4795282Srstrong@cs.ucsd.edu fatal("Object file architecture does not match compiled ISA (Alpha)."); 4805282Srstrong@cs.ucsd.edu switch (objFile->getOpSys()) { 4815282Srstrong@cs.ucsd.edu case ObjectFile::Tru64: 4825282Srstrong@cs.ucsd.edu process = new AlphaTru64Process(params, objFile); 4835282Srstrong@cs.ucsd.edu break; 4845282Srstrong@cs.ucsd.edu 4855282Srstrong@cs.ucsd.edu case ObjectFile::Linux: 4865282Srstrong@cs.ucsd.edu process = new AlphaLinuxProcess(params, objFile); 4873311Ssaidi@eecs.umich.edu break; 4883311Ssaidi@eecs.umich.edu 4893311Ssaidi@eecs.umich.edu default: 4903311Ssaidi@eecs.umich.edu fatal("Unknown/unsupported operating system."); 4913311Ssaidi@eecs.umich.edu } 4923311Ssaidi@eecs.umich.edu#elif THE_ISA == SPARC_ISA 4933311Ssaidi@eecs.umich.edu if (objFile->getArch() != ObjectFile::SPARC64 && objFile->getArch() != ObjectFile::SPARC32) 4943311Ssaidi@eecs.umich.edu fatal("Object file architecture does not match compiled ISA (SPARC)."); 4953311Ssaidi@eecs.umich.edu switch (objFile->getOpSys()) { 4963311Ssaidi@eecs.umich.edu case ObjectFile::Linux: 4973311Ssaidi@eecs.umich.edu if (objFile->getArch() == ObjectFile::SPARC64) { 4983311Ssaidi@eecs.umich.edu process = new Sparc64LinuxProcess(params, objFile); 4993311Ssaidi@eecs.umich.edu } else { 5005282Srstrong@cs.ucsd.edu process = new Sparc32LinuxProcess(params, objFile); 5015282Srstrong@cs.ucsd.edu } 5025282Srstrong@cs.ucsd.edu break; 5035282Srstrong@cs.ucsd.edu 5045282Srstrong@cs.ucsd.edu 5055282Srstrong@cs.ucsd.edu case ObjectFile::Solaris: 5063311Ssaidi@eecs.umich.edu process = new SparcSolarisProcess(params, objFile); 5073311Ssaidi@eecs.umich.edu break; 5083311Ssaidi@eecs.umich.edu default: 5093311Ssaidi@eecs.umich.edu fatal("Unknown/unsupported operating system."); 5103311Ssaidi@eecs.umich.edu } 5113311Ssaidi@eecs.umich.edu#elif THE_ISA == X86_ISA 5123311Ssaidi@eecs.umich.edu if (objFile->getArch() != ObjectFile::X86) 5133311Ssaidi@eecs.umich.edu fatal("Object file architecture does not match compiled ISA (x86)."); 5143311Ssaidi@eecs.umich.edu switch (objFile->getOpSys()) { 5153311Ssaidi@eecs.umich.edu case ObjectFile::Linux: 5163311Ssaidi@eecs.umich.edu process = new X86LinuxProcess(params, objFile); 5173311Ssaidi@eecs.umich.edu break; 5183311Ssaidi@eecs.umich.edu default: 5193311Ssaidi@eecs.umich.edu fatal("Unknown/unsupported operating system."); 5203311Ssaidi@eecs.umich.edu } 5213311Ssaidi@eecs.umich.edu#elif THE_ISA == MIPS_ISA 5223311Ssaidi@eecs.umich.edu if (objFile->getArch() != ObjectFile::Mips) 5235282Srstrong@cs.ucsd.edu fatal("Object file architecture does not match compiled ISA (MIPS)."); 5245282Srstrong@cs.ucsd.edu switch (objFile->getOpSys()) { 5255282Srstrong@cs.ucsd.edu case ObjectFile::Linux: 5265282Srstrong@cs.ucsd.edu process = new MipsLinuxProcess(params, objFile); 5275183Ssaidi@eecs.umich.edu break; 5285183Ssaidi@eecs.umich.edu 5295183Ssaidi@eecs.umich.edu default: 5303311Ssaidi@eecs.umich.edu fatal("Unknown/unsupported operating system."); 5312SN/A } 5322SN/A#else 5332SN/A#error "THE_ISA not set" 5342SN/A#endif 5352SN/A 5362SN/A 5372SN/A if (process == NULL) 5382SN/A fatal("Unknown error creating process object."); 53912SN/A return process; 5405154Sgblack@eecs.umich.edu} 5415154Sgblack@eecs.umich.edu 5425154Sgblack@eecs.umich.eduLiveProcess * 5432SN/ALiveProcessParams::create() 5445154Sgblack@eecs.umich.edu{ 5455154Sgblack@eecs.umich.edu return LiveProcess::create(this); 5465154Sgblack@eecs.umich.edu} 5475154Sgblack@eecs.umich.edu