process.cc revision 8232
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 338229Snate@binkert.org#include <fcntl.h> 342SN/A#include <unistd.h> 356712Snate@binkert.org 366712Snate@binkert.org#include <cstdio> 372SN/A#include <string> 382SN/A 3956SN/A#include "base/loader/object_file.hh" 401158SN/A#include "base/loader/symtab.hh" 418229Snate@binkert.org#include "base/intmath.hh" 42146SN/A#include "base/statistics.hh" 431858SN/A#include "config/full_system.hh" 446658Snate@binkert.org#include "config/the_isa.hh" 452680Sktlim@umich.edu#include "cpu/thread_context.hh" 462378SN/A#include "mem/page_table.hh" 472522SN/A#include "mem/physical.hh" 482401SN/A#include "mem/translating_port.hh" 498229Snate@binkert.org#include "params/LiveProcess.hh" 505154Sgblack@eecs.umich.edu#include "params/Process.hh" 515512SMichael.Adler@intel.com#include "sim/debug.hh" 52360SN/A#include "sim/process.hh" 534434Ssaidi@eecs.umich.edu#include "sim/process_impl.hh" 54695SN/A#include "sim/stats.hh" 552093SN/A#include "sim/syscall_emul.hh" 562378SN/A#include "sim/system.hh" 572SN/A 582715Sstever@eecs.umich.edu#if THE_ISA == ALPHA_ISA 592715Sstever@eecs.umich.edu#include "arch/alpha/linux/process.hh" 602715Sstever@eecs.umich.edu#include "arch/alpha/tru64/process.hh" 612715Sstever@eecs.umich.edu#elif THE_ISA == SPARC_ISA 622715Sstever@eecs.umich.edu#include "arch/sparc/linux/process.hh" 632715Sstever@eecs.umich.edu#include "arch/sparc/solaris/process.hh" 642715Sstever@eecs.umich.edu#elif THE_ISA == MIPS_ISA 652715Sstever@eecs.umich.edu#include "arch/mips/linux/process.hh" 665335Shines@cs.fsu.edu#elif THE_ISA == ARM_ISA 675335Shines@cs.fsu.edu#include "arch/arm/linux/process.hh" 684157Sgblack@eecs.umich.edu#elif THE_ISA == X86_ISA 694166Sgblack@eecs.umich.edu#include "arch/x86/linux/process.hh" 706691Stjones1@inf.ed.ac.uk#elif THE_ISA == POWER_ISA 716691Stjones1@inf.ed.ac.uk#include "arch/power/linux/process.hh" 722715Sstever@eecs.umich.edu#else 732715Sstever@eecs.umich.edu#error "THE_ISA not set" 742715Sstever@eecs.umich.edu#endif 752715Sstever@eecs.umich.edu 762715Sstever@eecs.umich.edu 772SN/Ausing namespace std; 782107SN/Ausing namespace TheISA; 792SN/A 802SN/A// 812SN/A// The purpose of this code is to fake the loader & syscall mechanism 822SN/A// when there's no OS: thus there's no resone to use it in FULL_SYSTEM 832SN/A// mode when we do have an OS 842SN/A// 851858SN/A#if FULL_SYSTEM 86360SN/A#error "process.cc not compatible with FULL_SYSTEM" 872SN/A#endif 882SN/A 892SN/A// current number of allocated processes 902SN/Aint num_processes = 0; 912SN/A 925758Shsul@eecs.umich.edutemplate<class IntType> 935771Shsul@eecs.umich.eduAuxVector<IntType>::AuxVector(IntType type, IntType val) 945758Shsul@eecs.umich.edu{ 955758Shsul@eecs.umich.edu a_type = TheISA::htog(type); 965758Shsul@eecs.umich.edu a_val = TheISA::htog(val); 975758Shsul@eecs.umich.edu} 985758Shsul@eecs.umich.edu 995771Shsul@eecs.umich.edutemplate class AuxVector<uint32_t>; 1005771Shsul@eecs.umich.edutemplate class AuxVector<uint64_t>; 1015758Shsul@eecs.umich.edu 1025154Sgblack@eecs.umich.eduProcess::Process(ProcessParams * params) 1037532Ssteve.reinhardt@amd.com : SimObject(params), system(params->system), 1047532Ssteve.reinhardt@amd.com max_stack_size(params->max_stack_size) 1052SN/A{ 1065154Sgblack@eecs.umich.edu string in = params->input; 1075154Sgblack@eecs.umich.edu string out = params->output; 1085514SMichael.Adler@intel.com string err = params->errout; 1095154Sgblack@eecs.umich.edu 1105154Sgblack@eecs.umich.edu // initialize file descriptors to default: same as simulator 1115154Sgblack@eecs.umich.edu int stdin_fd, stdout_fd, stderr_fd; 1125154Sgblack@eecs.umich.edu 1135154Sgblack@eecs.umich.edu if (in == "stdin" || in == "cin") 1145154Sgblack@eecs.umich.edu stdin_fd = STDIN_FILENO; 1155154Sgblack@eecs.umich.edu else if (in == "None") 1165154Sgblack@eecs.umich.edu stdin_fd = -1; 1175154Sgblack@eecs.umich.edu else 1185154Sgblack@eecs.umich.edu stdin_fd = Process::openInputFile(in); 1195154Sgblack@eecs.umich.edu 1205154Sgblack@eecs.umich.edu if (out == "stdout" || out == "cout") 1215154Sgblack@eecs.umich.edu stdout_fd = STDOUT_FILENO; 1225154Sgblack@eecs.umich.edu else if (out == "stderr" || out == "cerr") 1235154Sgblack@eecs.umich.edu stdout_fd = STDERR_FILENO; 1245154Sgblack@eecs.umich.edu else if (out == "None") 1255154Sgblack@eecs.umich.edu stdout_fd = -1; 1265154Sgblack@eecs.umich.edu else 1275154Sgblack@eecs.umich.edu stdout_fd = Process::openOutputFile(out); 1285154Sgblack@eecs.umich.edu 1295514SMichael.Adler@intel.com if (err == "stdout" || err == "cout") 1305514SMichael.Adler@intel.com stderr_fd = STDOUT_FILENO; 1315514SMichael.Adler@intel.com else if (err == "stderr" || err == "cerr") 1325514SMichael.Adler@intel.com stderr_fd = STDERR_FILENO; 1335514SMichael.Adler@intel.com else if (err == "None") 1345514SMichael.Adler@intel.com stderr_fd = -1; 1355514SMichael.Adler@intel.com else if (err == out) 1365514SMichael.Adler@intel.com stderr_fd = stdout_fd; 1375514SMichael.Adler@intel.com else 1385514SMichael.Adler@intel.com stderr_fd = Process::openOutputFile(err); 1395154Sgblack@eecs.umich.edu 1404997Sgblack@eecs.umich.edu M5_pid = system->allocatePID(); 1412SN/A // initialize first 3 fds (stdin, stdout, stderr) 1425282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[STDIN_FILENO]; 1435282Srstrong@cs.ucsd.edu fdo->fd = stdin_fd; 1445282Srstrong@cs.ucsd.edu fdo->filename = in; 1455282Srstrong@cs.ucsd.edu fdo->flags = O_RDONLY; 1465282Srstrong@cs.ucsd.edu fdo->mode = -1; 1475282Srstrong@cs.ucsd.edu fdo->fileOffset = 0; 1485282Srstrong@cs.ucsd.edu 1495282Srstrong@cs.ucsd.edu fdo = &fd_map[STDOUT_FILENO]; 1505282Srstrong@cs.ucsd.edu fdo->fd = stdout_fd; 1515282Srstrong@cs.ucsd.edu fdo->filename = out; 1525282Srstrong@cs.ucsd.edu fdo->flags = O_WRONLY | O_CREAT | O_TRUNC; 1535282Srstrong@cs.ucsd.edu fdo->mode = 0774; 1545282Srstrong@cs.ucsd.edu fdo->fileOffset = 0; 1555282Srstrong@cs.ucsd.edu 1565282Srstrong@cs.ucsd.edu fdo = &fd_map[STDERR_FILENO]; 1575282Srstrong@cs.ucsd.edu fdo->fd = stderr_fd; 1585514SMichael.Adler@intel.com fdo->filename = err; 1595282Srstrong@cs.ucsd.edu fdo->flags = O_WRONLY; 1605282Srstrong@cs.ucsd.edu fdo->mode = -1; 1615282Srstrong@cs.ucsd.edu fdo->fileOffset = 0; 1625282Srstrong@cs.ucsd.edu 1632SN/A 1642SN/A // mark remaining fds as free 1652SN/A for (int i = 3; i <= MAX_FD; ++i) { 1665282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[i]; 1675282Srstrong@cs.ucsd.edu fdo->fd = -1; 1682SN/A } 1692SN/A 1701450SN/A mmap_start = mmap_end = 0; 1711514SN/A nxm_start = nxm_end = 0; 1725184Sgblack@eecs.umich.edu pTable = new PageTable(this); 1732SN/A // other parameters will be initialized when the program is loaded 1742SN/A} 1752SN/A 1762378SN/A 1772SN/Avoid 1782SN/AProcess::regStats() 1792SN/A{ 180729SN/A using namespace Stats; 1812SN/A 1822SN/A num_syscalls 1832SN/A .name(name() + ".PROG:num_syscalls") 1842SN/A .desc("Number of system calls") 1852SN/A ; 1862SN/A} 1872SN/A 1882SN/A// 1892SN/A// static helper functions 1902SN/A// 1912SN/Aint 1922SN/AProcess::openInputFile(const string &filename) 1932SN/A{ 1942SN/A int fd = open(filename.c_str(), O_RDONLY); 1952SN/A 1962SN/A if (fd == -1) { 1972SN/A perror(NULL); 1982SN/A cerr << "unable to open \"" << filename << "\" for reading\n"; 1992SN/A fatal("can't open input file"); 2002SN/A } 2012SN/A 2022SN/A return fd; 2032SN/A} 2042SN/A 2052SN/A 2062SN/Aint 2072SN/AProcess::openOutputFile(const string &filename) 2082SN/A{ 2095514SMichael.Adler@intel.com int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0664); 2102SN/A 2112SN/A if (fd == -1) { 2122SN/A perror(NULL); 2132SN/A cerr << "unable to open \"" << filename << "\" for writing\n"; 2142SN/A fatal("can't open output file"); 2152SN/A } 2162SN/A 2172SN/A return fd; 2182SN/A} 2192SN/A 2205713Shsul@eecs.umich.eduThreadContext * 2215713Shsul@eecs.umich.eduProcess::findFreeContext() 2222SN/A{ 2235713Shsul@eecs.umich.edu int size = contextIds.size(); 2245713Shsul@eecs.umich.edu ThreadContext *tc; 2255713Shsul@eecs.umich.edu for (int i = 0; i < size; ++i) { 2265713Shsul@eecs.umich.edu tc = system->getThreadContext(contextIds[i]); 2276029Ssteve.reinhardt@amd.com if (tc->status() == ThreadContext::Halted) { 2285713Shsul@eecs.umich.edu // inactive context, free to use 2295713Shsul@eecs.umich.edu return tc; 2305713Shsul@eecs.umich.edu } 2315512SMichael.Adler@intel.com } 2325713Shsul@eecs.umich.edu return NULL; 2332SN/A} 2342SN/A 2351395SN/Avoid 2367532Ssteve.reinhardt@amd.comProcess::initState() 2371395SN/A{ 2385713Shsul@eecs.umich.edu if (contextIds.empty()) 2395713Shsul@eecs.umich.edu fatal("Process %s is not associated with any HW contexts!\n", name()); 2402378SN/A 2412680Sktlim@umich.edu // first thread context for this process... initialize & enable 2425713Shsul@eecs.umich.edu ThreadContext *tc = system->getThreadContext(contextIds[0]); 2431395SN/A 2441634SN/A // mark this context as active so it will start ticking. 2452680Sktlim@umich.edu tc->activate(0); 2462462SN/A 2472519SN/A Port *mem_port; 2482519SN/A mem_port = system->physmem->getPort("functional"); 2494434Ssaidi@eecs.umich.edu initVirtMem = new TranslatingPort("process init port", this, 2504434Ssaidi@eecs.umich.edu TranslatingPort::Always); 2512519SN/A mem_port->setPeer(initVirtMem); 2522519SN/A initVirtMem->setPeer(mem_port); 2531395SN/A} 2542SN/A 2552SN/A// map simulator fd sim_fd to target fd tgt_fd 2562SN/Avoid 2572SN/AProcess::dup_fd(int sim_fd, int tgt_fd) 2582SN/A{ 2592SN/A if (tgt_fd < 0 || tgt_fd > MAX_FD) 2602SN/A panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd); 2612SN/A 2625282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[tgt_fd]; 2635282Srstrong@cs.ucsd.edu fdo->fd = sim_fd; 2642SN/A} 2652SN/A 2662SN/A 2672SN/A// generate new target fd for sim_fd 2682SN/Aint 2695282Srstrong@cs.ucsd.eduProcess::alloc_fd(int sim_fd, string filename, int flags, int mode, bool pipe) 2702SN/A{ 2712SN/A // in case open() returns an error, don't allocate a new fd 2722SN/A if (sim_fd == -1) 2732SN/A return -1; 2742SN/A 2752SN/A // find first free target fd 2765282Srstrong@cs.ucsd.edu for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) { 2775282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[free_fd]; 2785282Srstrong@cs.ucsd.edu if (fdo->fd == -1) { 2795282Srstrong@cs.ucsd.edu fdo->fd = sim_fd; 2805282Srstrong@cs.ucsd.edu fdo->filename = filename; 2815282Srstrong@cs.ucsd.edu fdo->mode = mode; 2825282Srstrong@cs.ucsd.edu fdo->fileOffset = 0; 2835282Srstrong@cs.ucsd.edu fdo->flags = flags; 2845282Srstrong@cs.ucsd.edu fdo->isPipe = pipe; 2855282Srstrong@cs.ucsd.edu fdo->readPipeSource = 0; 2861970SN/A return free_fd; 2871970SN/A } 2882SN/A } 2892SN/A 2901970SN/A panic("Process::alloc_fd: out of file descriptors!"); 2911970SN/A} 2922SN/A 2931970SN/A 2941970SN/A// free target fd (e.g., after close) 2951970SN/Avoid 2961970SN/AProcess::free_fd(int tgt_fd) 2971970SN/A{ 2985282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[tgt_fd]; 2995282Srstrong@cs.ucsd.edu if (fdo->fd == -1) 3001970SN/A warn("Process::free_fd: request to free unused fd %d", tgt_fd); 3011970SN/A 3025282Srstrong@cs.ucsd.edu fdo->fd = -1; 3035282Srstrong@cs.ucsd.edu fdo->filename = "NULL"; 3045282Srstrong@cs.ucsd.edu fdo->mode = 0; 3055282Srstrong@cs.ucsd.edu fdo->fileOffset = 0; 3065282Srstrong@cs.ucsd.edu fdo->flags = 0; 3075282Srstrong@cs.ucsd.edu fdo->isPipe = false; 3085282Srstrong@cs.ucsd.edu fdo->readPipeSource = 0; 3092SN/A} 3102SN/A 3112SN/A 3122SN/A// look up simulator fd for given target fd 3132SN/Aint 3142SN/AProcess::sim_fd(int tgt_fd) 3152SN/A{ 3162SN/A if (tgt_fd > MAX_FD) 3172SN/A return -1; 3182SN/A 3195282Srstrong@cs.ucsd.edu return fd_map[tgt_fd].fd; 3202SN/A} 3212SN/A 3225282Srstrong@cs.ucsd.eduProcess::FdMap * 3235282Srstrong@cs.ucsd.eduProcess::sim_fd_obj(int tgt_fd) 3245282Srstrong@cs.ucsd.edu{ 3255282Srstrong@cs.ucsd.edu if (tgt_fd > MAX_FD) 3265282Srstrong@cs.ucsd.edu panic("sim_fd_obj called in fd out of range."); 3275282Srstrong@cs.ucsd.edu 3285282Srstrong@cs.ucsd.edu return &fd_map[tgt_fd]; 3295282Srstrong@cs.ucsd.edu} 3307487Ssteve.reinhardt@amd.com 3314434Ssaidi@eecs.umich.edubool 3324434Ssaidi@eecs.umich.eduProcess::checkAndAllocNextPage(Addr vaddr) 3334434Ssaidi@eecs.umich.edu{ 3344434Ssaidi@eecs.umich.edu // if this is an initial write we might not have 3354434Ssaidi@eecs.umich.edu if (vaddr >= stack_min && vaddr < stack_base) { 3364434Ssaidi@eecs.umich.edu pTable->allocate(roundDown(vaddr, VMPageSize), VMPageSize); 3374434Ssaidi@eecs.umich.edu return true; 3384434Ssaidi@eecs.umich.edu } 3394434Ssaidi@eecs.umich.edu 3404434Ssaidi@eecs.umich.edu // We've accessed the next page of the stack, so extend the stack 3414434Ssaidi@eecs.umich.edu // to cover it. 3425154Sgblack@eecs.umich.edu if (vaddr < stack_min && vaddr >= stack_base - max_stack_size) { 3435154Sgblack@eecs.umich.edu while (vaddr < stack_min) { 3445154Sgblack@eecs.umich.edu stack_min -= TheISA::PageBytes; 3455154Sgblack@eecs.umich.edu if(stack_base - stack_min > max_stack_size) 3465154Sgblack@eecs.umich.edu fatal("Maximum stack size exceeded\n"); 3475154Sgblack@eecs.umich.edu if(stack_base - stack_min > 8*1024*1024) 3485154Sgblack@eecs.umich.edu fatal("Over max stack size for one thread\n"); 3495154Sgblack@eecs.umich.edu pTable->allocate(stack_min, TheISA::PageBytes); 3505823Ssaidi@eecs.umich.edu inform("Increasing stack size by one page."); 3515154Sgblack@eecs.umich.edu }; 3524434Ssaidi@eecs.umich.edu return true; 3534434Ssaidi@eecs.umich.edu } 3544434Ssaidi@eecs.umich.edu return false; 3554434Ssaidi@eecs.umich.edu} 3564434Ssaidi@eecs.umich.edu 3577487Ssteve.reinhardt@amd.com// find all offsets for currently open files and save them 3585282Srstrong@cs.ucsd.eduvoid 3597487Ssteve.reinhardt@amd.comProcess::fix_file_offsets() 3607487Ssteve.reinhardt@amd.com{ 3615282Srstrong@cs.ucsd.edu Process::FdMap *fdo_stdin = &fd_map[STDIN_FILENO]; 3625282Srstrong@cs.ucsd.edu Process::FdMap *fdo_stdout = &fd_map[STDOUT_FILENO]; 3635282Srstrong@cs.ucsd.edu Process::FdMap *fdo_stderr = &fd_map[STDERR_FILENO]; 3645282Srstrong@cs.ucsd.edu string in = fdo_stdin->filename; 3655282Srstrong@cs.ucsd.edu string out = fdo_stdout->filename; 3665514SMichael.Adler@intel.com string err = fdo_stderr->filename; 3675282Srstrong@cs.ucsd.edu 3685282Srstrong@cs.ucsd.edu // initialize file descriptors to default: same as simulator 3695282Srstrong@cs.ucsd.edu int stdin_fd, stdout_fd, stderr_fd; 3705282Srstrong@cs.ucsd.edu 3715282Srstrong@cs.ucsd.edu if (in == "stdin" || in == "cin") 3725282Srstrong@cs.ucsd.edu stdin_fd = STDIN_FILENO; 3735282Srstrong@cs.ucsd.edu else if (in == "None") 3745282Srstrong@cs.ucsd.edu stdin_fd = -1; 3757487Ssteve.reinhardt@amd.com else { 3767487Ssteve.reinhardt@amd.com // open standard in and seek to the right location 3775282Srstrong@cs.ucsd.edu stdin_fd = Process::openInputFile(in); 3785282Srstrong@cs.ucsd.edu if (lseek(stdin_fd, fdo_stdin->fileOffset, SEEK_SET) < 0) 3795282Srstrong@cs.ucsd.edu panic("Unable to seek to correct location in file: %s", in); 3805282Srstrong@cs.ucsd.edu } 3815282Srstrong@cs.ucsd.edu 3825282Srstrong@cs.ucsd.edu if (out == "stdout" || out == "cout") 3835282Srstrong@cs.ucsd.edu stdout_fd = STDOUT_FILENO; 3845282Srstrong@cs.ucsd.edu else if (out == "stderr" || out == "cerr") 3855282Srstrong@cs.ucsd.edu stdout_fd = STDERR_FILENO; 3865282Srstrong@cs.ucsd.edu else if (out == "None") 3875282Srstrong@cs.ucsd.edu stdout_fd = -1; 3887487Ssteve.reinhardt@amd.com else { 3895282Srstrong@cs.ucsd.edu stdout_fd = Process::openOutputFile(out); 3905514SMichael.Adler@intel.com if (lseek(stdout_fd, fdo_stdout->fileOffset, SEEK_SET) < 0) 3915514SMichael.Adler@intel.com panic("Unable to seek to correct location in file: %s", out); 3925282Srstrong@cs.ucsd.edu } 3935282Srstrong@cs.ucsd.edu 3945514SMichael.Adler@intel.com if (err == "stdout" || err == "cout") 3955514SMichael.Adler@intel.com stderr_fd = STDOUT_FILENO; 3965514SMichael.Adler@intel.com else if (err == "stderr" || err == "cerr") 3975514SMichael.Adler@intel.com stderr_fd = STDERR_FILENO; 3985514SMichael.Adler@intel.com else if (err == "None") 3995514SMichael.Adler@intel.com stderr_fd = -1; 4005514SMichael.Adler@intel.com else if (err == out) 4015514SMichael.Adler@intel.com stderr_fd = stdout_fd; 4025514SMichael.Adler@intel.com else { 4035514SMichael.Adler@intel.com stderr_fd = Process::openOutputFile(err); 4045514SMichael.Adler@intel.com if (lseek(stderr_fd, fdo_stderr->fileOffset, SEEK_SET) < 0) 4055514SMichael.Adler@intel.com panic("Unable to seek to correct location in file: %s", err); 4065514SMichael.Adler@intel.com } 4075282Srstrong@cs.ucsd.edu 4085282Srstrong@cs.ucsd.edu fdo_stdin->fd = stdin_fd; 4095282Srstrong@cs.ucsd.edu fdo_stdout->fd = stdout_fd; 4105282Srstrong@cs.ucsd.edu fdo_stderr->fd = stderr_fd; 4115282Srstrong@cs.ucsd.edu 4125282Srstrong@cs.ucsd.edu 4135282Srstrong@cs.ucsd.edu for (int free_fd = 3; free_fd <= MAX_FD; ++free_fd) { 4145282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[free_fd]; 4155282Srstrong@cs.ucsd.edu if (fdo->fd != -1) { 4165282Srstrong@cs.ucsd.edu if (fdo->isPipe){ 4175282Srstrong@cs.ucsd.edu if (fdo->filename == "PIPE-WRITE") 4185282Srstrong@cs.ucsd.edu continue; 4195282Srstrong@cs.ucsd.edu else { 4205282Srstrong@cs.ucsd.edu assert (fdo->filename == "PIPE-READ"); 4215282Srstrong@cs.ucsd.edu //create a new pipe 4225282Srstrong@cs.ucsd.edu int fds[2]; 4235282Srstrong@cs.ucsd.edu int pipe_retval = pipe(fds); 4245282Srstrong@cs.ucsd.edu 4255282Srstrong@cs.ucsd.edu if (pipe_retval < 0) { 4265282Srstrong@cs.ucsd.edu // error 4275282Srstrong@cs.ucsd.edu panic("Unable to create new pipe."); 4285282Srstrong@cs.ucsd.edu } 4295282Srstrong@cs.ucsd.edu fdo->fd = fds[0]; //set read pipe 4305282Srstrong@cs.ucsd.edu Process::FdMap *fdo_write = &fd_map[fdo->readPipeSource]; 4315282Srstrong@cs.ucsd.edu if (fdo_write->filename != "PIPE-WRITE") 4325282Srstrong@cs.ucsd.edu panic ("Couldn't find write end of the pipe"); 4335282Srstrong@cs.ucsd.edu 4345282Srstrong@cs.ucsd.edu fdo_write->fd = fds[1];//set write pipe 4355282Srstrong@cs.ucsd.edu } 4365282Srstrong@cs.ucsd.edu } else { 4375282Srstrong@cs.ucsd.edu //Open file 4385282Srstrong@cs.ucsd.edu int fd = open(fdo->filename.c_str(), fdo->flags, fdo->mode); 4395282Srstrong@cs.ucsd.edu 4405282Srstrong@cs.ucsd.edu if (fd == -1) 4415282Srstrong@cs.ucsd.edu panic("Unable to open file: %s", fdo->filename); 4425282Srstrong@cs.ucsd.edu fdo->fd = fd; 4435282Srstrong@cs.ucsd.edu 4445282Srstrong@cs.ucsd.edu //Seek to correct location before checkpoint 4455282Srstrong@cs.ucsd.edu if (lseek(fd,fdo->fileOffset, SEEK_SET) < 0) 4467487Ssteve.reinhardt@amd.com panic("Unable to seek to correct location in file: %s", 4477487Ssteve.reinhardt@amd.com fdo->filename); 4485282Srstrong@cs.ucsd.edu } 4495282Srstrong@cs.ucsd.edu } 4505282Srstrong@cs.ucsd.edu } 4515282Srstrong@cs.ucsd.edu} 4527487Ssteve.reinhardt@amd.com 4535282Srstrong@cs.ucsd.eduvoid 4547487Ssteve.reinhardt@amd.comProcess::find_file_offsets() 4557487Ssteve.reinhardt@amd.com{ 4565282Srstrong@cs.ucsd.edu for (int free_fd = 0; free_fd <= MAX_FD; ++free_fd) { 4575282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[free_fd]; 4585282Srstrong@cs.ucsd.edu if (fdo->fd != -1) { 4595282Srstrong@cs.ucsd.edu fdo->fileOffset = lseek(fdo->fd, 0, SEEK_CUR); 4607487Ssteve.reinhardt@amd.com } else { 4615282Srstrong@cs.ucsd.edu fdo->filename = "NULL"; 4625282Srstrong@cs.ucsd.edu fdo->fileOffset = 0; 4635282Srstrong@cs.ucsd.edu } 4645282Srstrong@cs.ucsd.edu } 4655282Srstrong@cs.ucsd.edu} 4665282Srstrong@cs.ucsd.edu 4675282Srstrong@cs.ucsd.eduvoid 4687487Ssteve.reinhardt@amd.comProcess::setReadPipeSource(int read_pipe_fd, int source_fd) 4697487Ssteve.reinhardt@amd.com{ 4705282Srstrong@cs.ucsd.edu Process::FdMap *fdo = &fd_map[read_pipe_fd]; 4715282Srstrong@cs.ucsd.edu fdo->readPipeSource = source_fd; 4725282Srstrong@cs.ucsd.edu} 4735282Srstrong@cs.ucsd.edu 4745282Srstrong@cs.ucsd.eduvoid 4755282Srstrong@cs.ucsd.eduProcess::FdMap::serialize(std::ostream &os) 4765282Srstrong@cs.ucsd.edu{ 4775282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(fd); 4785282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(isPipe); 4795282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(filename); 4805282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(flags); 4815282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(readPipeSource); 4825282Srstrong@cs.ucsd.edu SERIALIZE_SCALAR(fileOffset); 4835282Srstrong@cs.ucsd.edu} 4845282Srstrong@cs.ucsd.edu 4855282Srstrong@cs.ucsd.eduvoid 4865282Srstrong@cs.ucsd.eduProcess::FdMap::unserialize(Checkpoint *cp, const std::string §ion) 4875282Srstrong@cs.ucsd.edu{ 4885282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(fd); 4895282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(isPipe); 4905282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(filename); 4915282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(flags); 4925282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(readPipeSource); 4935282Srstrong@cs.ucsd.edu UNSERIALIZE_SCALAR(fileOffset); 4945282Srstrong@cs.ucsd.edu} 4955282Srstrong@cs.ucsd.edu 4963311Ssaidi@eecs.umich.eduvoid 4973311Ssaidi@eecs.umich.eduProcess::serialize(std::ostream &os) 4983311Ssaidi@eecs.umich.edu{ 4993311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(brk_point); 5003311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(stack_base); 5013311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(stack_size); 5023311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(stack_min); 5033311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(next_thread_stack_base); 5043311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(mmap_start); 5053311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(mmap_end); 5063311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(nxm_start); 5073311Ssaidi@eecs.umich.edu SERIALIZE_SCALAR(nxm_end); 5085282Srstrong@cs.ucsd.edu find_file_offsets(); 5095282Srstrong@cs.ucsd.edu pTable->serialize(os); 5105282Srstrong@cs.ucsd.edu for (int x = 0; x <= MAX_FD; x++) { 5115282Srstrong@cs.ucsd.edu nameOut(os, csprintf("%s.FdMap%d", name(), x)); 5125282Srstrong@cs.ucsd.edu fd_map[x].serialize(os); 5135282Srstrong@cs.ucsd.edu } 5146820SLisa.Hsu@amd.com SERIALIZE_SCALAR(M5_pid); 5153311Ssaidi@eecs.umich.edu 5163311Ssaidi@eecs.umich.edu} 5173311Ssaidi@eecs.umich.edu 5183311Ssaidi@eecs.umich.eduvoid 5193311Ssaidi@eecs.umich.eduProcess::unserialize(Checkpoint *cp, const std::string §ion) 5203311Ssaidi@eecs.umich.edu{ 5213311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(brk_point); 5223311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(stack_base); 5233311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(stack_size); 5243311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(stack_min); 5253311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(next_thread_stack_base); 5263311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(mmap_start); 5273311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(mmap_end); 5283311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(nxm_start); 5293311Ssaidi@eecs.umich.edu UNSERIALIZE_SCALAR(nxm_end); 5303311Ssaidi@eecs.umich.edu pTable->unserialize(cp, section); 5315282Srstrong@cs.ucsd.edu for (int x = 0; x <= MAX_FD; x++) { 5325282Srstrong@cs.ucsd.edu fd_map[x].unserialize(cp, csprintf("%s.FdMap%d", section, x)); 5337487Ssteve.reinhardt@amd.com } 5345282Srstrong@cs.ucsd.edu fix_file_offsets(); 5356820SLisa.Hsu@amd.com UNSERIALIZE_OPT_SCALAR(M5_pid); 5366820SLisa.Hsu@amd.com // The above returns a bool so that you could do something if you don't 5376820SLisa.Hsu@amd.com // find the param in the checkpoint if you wanted to, like set a default 5386820SLisa.Hsu@amd.com // but in this case we'll just stick with the instantianted value if not 5396820SLisa.Hsu@amd.com // found. 5403311Ssaidi@eecs.umich.edu} 5412SN/A 5422SN/A 5432SN/A//////////////////////////////////////////////////////////////////////// 5442SN/A// 5452SN/A// LiveProcess member definitions 5462SN/A// 5472SN/A//////////////////////////////////////////////////////////////////////// 5482SN/A 54912SN/A 5505154Sgblack@eecs.umich.eduLiveProcess::LiveProcess(LiveProcessParams * params, ObjectFile *_objFile) 5515154Sgblack@eecs.umich.edu : Process(params), objFile(_objFile), 5525154Sgblack@eecs.umich.edu argv(params->cmd), envp(params->env), cwd(params->cwd) 5532SN/A{ 5545154Sgblack@eecs.umich.edu __uid = params->uid; 5555154Sgblack@eecs.umich.edu __euid = params->euid; 5565154Sgblack@eecs.umich.edu __gid = params->gid; 5575154Sgblack@eecs.umich.edu __egid = params->egid; 5585154Sgblack@eecs.umich.edu __pid = params->pid; 5595154Sgblack@eecs.umich.edu __ppid = params->ppid; 5603114Sgblack@eecs.umich.edu 5615154Sgblack@eecs.umich.edu prog_fname = params->cmd[0]; 56212SN/A 5631158SN/A // load up symbols, if any... these may be used for debugging or 5641158SN/A // profiling. 5651158SN/A if (!debugSymbolTable) { 5661158SN/A debugSymbolTable = new SymbolTable(); 5671158SN/A if (!objFile->loadGlobalSymbols(debugSymbolTable) || 5681158SN/A !objFile->loadLocalSymbols(debugSymbolTable)) { 5691158SN/A // didn't load any symbols 5701158SN/A delete debugSymbolTable; 5711158SN/A debugSymbolTable = NULL; 5721158SN/A } 5731158SN/A } 5742378SN/A} 5751158SN/A 5762378SN/Avoid 5772680Sktlim@umich.eduLiveProcess::syscall(int64_t callnum, ThreadContext *tc) 5782093SN/A{ 5792093SN/A num_syscalls++; 5802093SN/A 5812093SN/A SyscallDesc *desc = getDesc(callnum); 5822093SN/A if (desc == NULL) 5832093SN/A fatal("Syscall %d out of range", callnum); 5842093SN/A 5852680Sktlim@umich.edu desc->doSyscall(callnum, this, tc); 5862093SN/A} 5872SN/A 5886701Sgblack@eecs.umich.eduIntReg 5896701Sgblack@eecs.umich.eduLiveProcess::getSyscallArg(ThreadContext *tc, int &i, int width) 5906701Sgblack@eecs.umich.edu{ 5916701Sgblack@eecs.umich.edu return getSyscallArg(tc, i); 5926701Sgblack@eecs.umich.edu} 5936701Sgblack@eecs.umich.edu 5942715Sstever@eecs.umich.eduLiveProcess * 5955154Sgblack@eecs.umich.eduLiveProcess::create(LiveProcessParams * params) 5962715Sstever@eecs.umich.edu{ 5972715Sstever@eecs.umich.edu LiveProcess *process = NULL; 5982715Sstever@eecs.umich.edu 5995154Sgblack@eecs.umich.edu string executable = 6005154Sgblack@eecs.umich.edu params->executable == "" ? params->cmd[0] : params->executable; 6012715Sstever@eecs.umich.edu ObjectFile *objFile = createObjectFile(executable); 6022715Sstever@eecs.umich.edu if (objFile == NULL) { 6032715Sstever@eecs.umich.edu fatal("Can't load object file %s", executable); 6042715Sstever@eecs.umich.edu } 6052715Sstever@eecs.umich.edu 6063917Ssaidi@eecs.umich.edu if (objFile->isDynamic()) 6073917Ssaidi@eecs.umich.edu fatal("Object file is a dynamic executable however only static " 6085070Ssaidi@eecs.umich.edu "executables are supported!\n Please recompile your " 6093917Ssaidi@eecs.umich.edu "executable as a static binary and try again.\n"); 6103917Ssaidi@eecs.umich.edu 6115089Sgblack@eecs.umich.edu#if THE_ISA == ALPHA_ISA 6125753Ssteve.reinhardt@amd.com if (objFile->getArch() != ObjectFile::Alpha) 6135753Ssteve.reinhardt@amd.com fatal("Object file architecture does not match compiled ISA (Alpha)."); 6145753Ssteve.reinhardt@amd.com 6152715Sstever@eecs.umich.edu switch (objFile->getOpSys()) { 6162715Sstever@eecs.umich.edu case ObjectFile::Tru64: 6175154Sgblack@eecs.umich.edu process = new AlphaTru64Process(params, objFile); 6182715Sstever@eecs.umich.edu break; 6192715Sstever@eecs.umich.edu 6205753Ssteve.reinhardt@amd.com case ObjectFile::UnknownOpSys: 6215753Ssteve.reinhardt@amd.com warn("Unknown operating system; assuming Linux."); 6225753Ssteve.reinhardt@amd.com // fall through 6232715Sstever@eecs.umich.edu case ObjectFile::Linux: 6245154Sgblack@eecs.umich.edu process = new AlphaLinuxProcess(params, objFile); 6252715Sstever@eecs.umich.edu break; 6262715Sstever@eecs.umich.edu 6272715Sstever@eecs.umich.edu default: 6282715Sstever@eecs.umich.edu fatal("Unknown/unsupported operating system."); 6292715Sstever@eecs.umich.edu } 6302715Sstever@eecs.umich.edu#elif THE_ISA == SPARC_ISA 6315753Ssteve.reinhardt@amd.com if (objFile->getArch() != ObjectFile::SPARC64 && 6325753Ssteve.reinhardt@amd.com objFile->getArch() != ObjectFile::SPARC32) 6332715Sstever@eecs.umich.edu fatal("Object file architecture does not match compiled ISA (SPARC)."); 6342715Sstever@eecs.umich.edu switch (objFile->getOpSys()) { 6355753Ssteve.reinhardt@amd.com case ObjectFile::UnknownOpSys: 6365753Ssteve.reinhardt@amd.com warn("Unknown operating system; assuming Linux."); 6375753Ssteve.reinhardt@amd.com // fall through 6382715Sstever@eecs.umich.edu case ObjectFile::Linux: 6394111Sgblack@eecs.umich.edu if (objFile->getArch() == ObjectFile::SPARC64) { 6405154Sgblack@eecs.umich.edu process = new Sparc64LinuxProcess(params, objFile); 6414111Sgblack@eecs.umich.edu } else { 6425154Sgblack@eecs.umich.edu process = new Sparc32LinuxProcess(params, objFile); 6434111Sgblack@eecs.umich.edu } 6442715Sstever@eecs.umich.edu break; 6452715Sstever@eecs.umich.edu 6462715Sstever@eecs.umich.edu 6472715Sstever@eecs.umich.edu case ObjectFile::Solaris: 6485154Sgblack@eecs.umich.edu process = new SparcSolarisProcess(params, objFile); 6492715Sstever@eecs.umich.edu break; 6505753Ssteve.reinhardt@amd.com 6512715Sstever@eecs.umich.edu default: 6522715Sstever@eecs.umich.edu fatal("Unknown/unsupported operating system."); 6532715Sstever@eecs.umich.edu } 6544157Sgblack@eecs.umich.edu#elif THE_ISA == X86_ISA 6555874Sgblack@eecs.umich.edu if (objFile->getArch() != ObjectFile::X86_64 && 6565874Sgblack@eecs.umich.edu objFile->getArch() != ObjectFile::I386) 6574166Sgblack@eecs.umich.edu fatal("Object file architecture does not match compiled ISA (x86)."); 6584157Sgblack@eecs.umich.edu switch (objFile->getOpSys()) { 6595753Ssteve.reinhardt@amd.com case ObjectFile::UnknownOpSys: 6605753Ssteve.reinhardt@amd.com warn("Unknown operating system; assuming Linux."); 6615753Ssteve.reinhardt@amd.com // fall through 6624166Sgblack@eecs.umich.edu case ObjectFile::Linux: 6635874Sgblack@eecs.umich.edu if (objFile->getArch() == ObjectFile::X86_64) { 6645955Sgblack@eecs.umich.edu process = new X86_64LinuxProcess(params, objFile); 6655874Sgblack@eecs.umich.edu } else { 6665955Sgblack@eecs.umich.edu process = new I386LinuxProcess(params, objFile); 6675874Sgblack@eecs.umich.edu } 6684166Sgblack@eecs.umich.edu break; 6695753Ssteve.reinhardt@amd.com 6704157Sgblack@eecs.umich.edu default: 6714157Sgblack@eecs.umich.edu fatal("Unknown/unsupported operating system."); 6724157Sgblack@eecs.umich.edu } 6732715Sstever@eecs.umich.edu#elif THE_ISA == MIPS_ISA 6742715Sstever@eecs.umich.edu if (objFile->getArch() != ObjectFile::Mips) 6752715Sstever@eecs.umich.edu fatal("Object file architecture does not match compiled ISA (MIPS)."); 6762715Sstever@eecs.umich.edu switch (objFile->getOpSys()) { 6775753Ssteve.reinhardt@amd.com case ObjectFile::UnknownOpSys: 6785753Ssteve.reinhardt@amd.com warn("Unknown operating system; assuming Linux."); 6795753Ssteve.reinhardt@amd.com // fall through 6802715Sstever@eecs.umich.edu case ObjectFile::Linux: 6815154Sgblack@eecs.umich.edu process = new MipsLinuxProcess(params, objFile); 6822715Sstever@eecs.umich.edu break; 6832715Sstever@eecs.umich.edu 6842715Sstever@eecs.umich.edu default: 6852715Sstever@eecs.umich.edu fatal("Unknown/unsupported operating system."); 6862715Sstever@eecs.umich.edu } 6875335Shines@cs.fsu.edu#elif THE_ISA == ARM_ISA 6887095Sgblack@eecs.umich.edu if (objFile->getArch() != ObjectFile::Arm && 6897095Sgblack@eecs.umich.edu objFile->getArch() != ObjectFile::Thumb) 6905335Shines@cs.fsu.edu fatal("Object file architecture does not match compiled ISA (ARM)."); 6915335Shines@cs.fsu.edu switch (objFile->getOpSys()) { 6925753Ssteve.reinhardt@amd.com case ObjectFile::UnknownOpSys: 6935753Ssteve.reinhardt@amd.com warn("Unknown operating system; assuming Linux."); 6945753Ssteve.reinhardt@amd.com // fall through 6955335Shines@cs.fsu.edu case ObjectFile::Linux: 6967096Sgblack@eecs.umich.edu process = new ArmLinuxProcess(params, objFile, objFile->getArch()); 6975335Shines@cs.fsu.edu break; 6986392Ssaidi@eecs.umich.edu case ObjectFile::LinuxArmOABI: 6996392Ssaidi@eecs.umich.edu fatal("M5 does not support ARM OABI binaries. Please recompile with an" 7006392Ssaidi@eecs.umich.edu " EABI compiler."); 7015335Shines@cs.fsu.edu default: 7025335Shines@cs.fsu.edu fatal("Unknown/unsupported operating system."); 7035335Shines@cs.fsu.edu } 7046691Stjones1@inf.ed.ac.uk#elif THE_ISA == POWER_ISA 7056691Stjones1@inf.ed.ac.uk if (objFile->getArch() != ObjectFile::Power) 7066691Stjones1@inf.ed.ac.uk fatal("Object file architecture does not match compiled ISA (Power)."); 7076691Stjones1@inf.ed.ac.uk switch (objFile->getOpSys()) { 7086691Stjones1@inf.ed.ac.uk case ObjectFile::UnknownOpSys: 7096691Stjones1@inf.ed.ac.uk warn("Unknown operating system; assuming Linux."); 7106691Stjones1@inf.ed.ac.uk // fall through 7116691Stjones1@inf.ed.ac.uk case ObjectFile::Linux: 7126691Stjones1@inf.ed.ac.uk process = new PowerLinuxProcess(params, objFile); 7136691Stjones1@inf.ed.ac.uk break; 7146691Stjones1@inf.ed.ac.uk 7156691Stjones1@inf.ed.ac.uk default: 7166691Stjones1@inf.ed.ac.uk fatal("Unknown/unsupported operating system."); 7176691Stjones1@inf.ed.ac.uk } 7182715Sstever@eecs.umich.edu#else 7192715Sstever@eecs.umich.edu#error "THE_ISA not set" 7202715Sstever@eecs.umich.edu#endif 7212715Sstever@eecs.umich.edu 7222715Sstever@eecs.umich.edu 7232715Sstever@eecs.umich.edu if (process == NULL) 7242715Sstever@eecs.umich.edu fatal("Unknown error creating process object."); 7252715Sstever@eecs.umich.edu return process; 7262715Sstever@eecs.umich.edu} 7272715Sstever@eecs.umich.edu 7284762Snate@binkert.orgLiveProcess * 7294762Snate@binkert.orgLiveProcessParams::create() 7302715Sstever@eecs.umich.edu{ 7315154Sgblack@eecs.umich.edu return LiveProcess::create(this); 7322715Sstever@eecs.umich.edu} 733