process.hh revision 4117
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 302SN/A */ 312SN/A 32360SN/A#ifndef __PROCESS_HH__ 33360SN/A#define __PROCESS_HH__ 342SN/A 352SN/A// 362SN/A// The purpose of this code is to fake the loader & syscall mechanism 372SN/A// when there's no OS: thus there's no reason to use it in FULL_SYSTEM 382SN/A// mode when we do have an OS. 392SN/A// 401858SN/A#include "config/full_system.hh" 411858SN/A 421858SN/A#if !FULL_SYSTEM 432SN/A 444117Sgblack@eecs.umich.edu#include <string> 45180SN/A#include <vector> 462SN/A 472378SN/A#include "base/statistics.hh" 484117Sgblack@eecs.umich.edu#include "mem/translating_port.hh" 494111Sgblack@eecs.umich.edu#include "sim/host.hh" 5056SN/A#include "sim/sim_object.hh" 512SN/A 522680Sktlim@umich.educlass ThreadContext; 532093SN/Aclass SyscallDesc; 542462SN/Aclass PageTable; 552401SN/Aclass TranslatingPort; 562378SN/Aclass System; 573971Sgblack@eecs.umich.educlass GDBListener; 583971Sgblack@eecs.umich.edunamespace TheISA 593971Sgblack@eecs.umich.edu{ 603971Sgblack@eecs.umich.edu class RemoteGDB; 613971Sgblack@eecs.umich.edu} 622378SN/A 634117Sgblack@eecs.umich.edu//This needs to be templated for cases where 32 bit pointers are needed. 644117Sgblack@eecs.umich.edutemplate<class AddrType> 652561SN/Avoid 664117Sgblack@eecs.umich.educopyStringArray(std::vector<std::string> &strings, 674117Sgblack@eecs.umich.edu AddrType array_ptr, AddrType data_ptr, 684117Sgblack@eecs.umich.edu TranslatingPort* memPort) 694117Sgblack@eecs.umich.edu{ 704117Sgblack@eecs.umich.edu AddrType data_ptr_swap; 714117Sgblack@eecs.umich.edu for (int i = 0; i < strings.size(); ++i) { 724117Sgblack@eecs.umich.edu data_ptr_swap = htog(data_ptr); 734117Sgblack@eecs.umich.edu memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr_swap, 744117Sgblack@eecs.umich.edu sizeof(AddrType)); 754117Sgblack@eecs.umich.edu memPort->writeString(data_ptr, strings[i].c_str()); 764117Sgblack@eecs.umich.edu array_ptr += sizeof(AddrType); 774117Sgblack@eecs.umich.edu data_ptr += strings[i].size() + 1; 784117Sgblack@eecs.umich.edu } 794117Sgblack@eecs.umich.edu // add NULL terminator 804117Sgblack@eecs.umich.edu data_ptr = 0; 814117Sgblack@eecs.umich.edu 824117Sgblack@eecs.umich.edu memPort->writeBlob(array_ptr, (uint8_t*)&data_ptr, sizeof(AddrType)); 834117Sgblack@eecs.umich.edu} 842561SN/A 852SN/Aclass Process : public SimObject 862SN/A{ 872SN/A public: 882SN/A 892378SN/A /// Pointer to object representing the system this process is 902378SN/A /// running on. 912378SN/A System *system; 922378SN/A 932680Sktlim@umich.edu // have we initialized a thread context from this process? If 942SN/A // yes, subsequent contexts are assumed to be for dynamically 952SN/A // created threads and are not initialized. 962SN/A bool initialContextLoaded; 972SN/A 982680Sktlim@umich.edu // thread contexts associated with this process 992680Sktlim@umich.edu std::vector<ThreadContext *> threadContexts; 100180SN/A 1013971Sgblack@eecs.umich.edu // remote gdb objects 1023971Sgblack@eecs.umich.edu std::vector<TheISA::RemoteGDB *> remoteGDB; 1033971Sgblack@eecs.umich.edu std::vector<GDBListener *> gdbListen; 1043971Sgblack@eecs.umich.edu bool breakpoint(); 1053971Sgblack@eecs.umich.edu 106180SN/A // number of CPUs (esxec contexts, really) assigned to this process. 1072680Sktlim@umich.edu unsigned int numCpus() { return threadContexts.size(); } 1082SN/A 1092SN/A // record of blocked context 1102SN/A struct WaitRec 1112SN/A { 1122SN/A Addr waitChan; 1132680Sktlim@umich.edu ThreadContext *waitingContext; 1142SN/A 1152680Sktlim@umich.edu WaitRec(Addr chan, ThreadContext *ctx) 1162SN/A : waitChan(chan), waitingContext(ctx) 1172378SN/A { } 1182SN/A }; 1192SN/A 1202SN/A // list of all blocked contexts 1212SN/A std::list<WaitRec> waitList; 1222SN/A 1232SN/A Addr brk_point; // top of the data segment 1242SN/A 1252SN/A Addr stack_base; // stack segment base (highest address) 1262SN/A unsigned stack_size; // initial stack size 1272SN/A Addr stack_min; // lowest address accessed on the stack 1282SN/A 1292SN/A // addr to use for next stack region (for multithreaded apps) 1302SN/A Addr next_thread_stack_base; 1312SN/A 132360SN/A // Base of region for mmaps (when user doesn't specify an address). 1331408SN/A Addr mmap_start; 1341408SN/A Addr mmap_end; 135360SN/A 1361514SN/A // Base of region for nxm data 1371514SN/A Addr nxm_start; 1381514SN/A Addr nxm_end; 1391514SN/A 1402SN/A std::string prog_fname; // file name 1412SN/A 142729SN/A Stats::Scalar<> num_syscalls; // number of syscalls executed 1432SN/A 1442SN/A 1452SN/A protected: 1462SN/A // constructor 1471450SN/A Process(const std::string &nm, 1482378SN/A System *_system, 1492SN/A int stdin_fd, // initial I/O descriptors 1502SN/A int stdout_fd, 1512SN/A int stderr_fd); 1522SN/A 1531395SN/A // post initialization startup 1541395SN/A virtual void startup(); 1552SN/A 1562SN/A protected: 1572378SN/A /// Memory object for initialization (image loading) 1582401SN/A TranslatingPort *initVirtMem; 1592378SN/A 1602378SN/A public: 1612378SN/A PageTable *pTable; 1622SN/A 1632SN/A private: 1642SN/A // file descriptor remapping support 1651970SN/A static const int MAX_FD = 256; // max legal fd value 1662SN/A int fd_map[MAX_FD+1]; 1672SN/A 1682SN/A public: 1692SN/A // static helper functions to generate file descriptors for constructor 1702SN/A static int openInputFile(const std::string &filename); 1712SN/A static int openOutputFile(const std::string &filename); 1722SN/A 1732SN/A // override of virtual SimObject method: register statistics 1742SN/A virtual void regStats(); 1752SN/A 1762680Sktlim@umich.edu // register a thread context for this process. 1772680Sktlim@umich.edu // returns tc's cpu number (index into threadContexts[]) 1782680Sktlim@umich.edu int registerThreadContext(ThreadContext *tc); 179180SN/A 180180SN/A 1812680Sktlim@umich.edu void replaceThreadContext(ThreadContext *tc, int tcIndex); 1822SN/A 1832SN/A // map simulator fd sim_fd to target fd tgt_fd 1842SN/A void dup_fd(int sim_fd, int tgt_fd); 1852SN/A 1862SN/A // generate new target fd for sim_fd 1871970SN/A int alloc_fd(int sim_fd); 1881970SN/A 1891970SN/A // free target fd (e.g., after close) 1901970SN/A void free_fd(int tgt_fd); 1912SN/A 1922SN/A // look up simulator fd for given target fd 1932SN/A int sim_fd(int tgt_fd); 1942SN/A 1952680Sktlim@umich.edu virtual void syscall(int64_t callnum, ThreadContext *tc) = 0; 1963311Ssaidi@eecs.umich.edu 1973311Ssaidi@eecs.umich.edu void serialize(std::ostream &os); 1983311Ssaidi@eecs.umich.edu void unserialize(Checkpoint *cp, const std::string §ion); 1992SN/A}; 2002SN/A 2012SN/A// 2022SN/A// "Live" process with system calls redirected to host system 2032SN/A// 204360SN/Aclass ObjectFile; 2052SN/Aclass LiveProcess : public Process 2062SN/A{ 207360SN/A protected: 2082378SN/A ObjectFile *objFile; 2092378SN/A std::vector<std::string> argv; 2102378SN/A std::vector<std::string> envp; 2113669Sbinkertn@umich.edu std::string cwd; 2122378SN/A 2131450SN/A LiveProcess(const std::string &nm, ObjectFile *objFile, 2142378SN/A System *_system, int stdin_fd, int stdout_fd, int stderr_fd, 2152SN/A std::vector<std::string> &argv, 2163114Sgblack@eecs.umich.edu std::vector<std::string> &envp, 2173669Sbinkertn@umich.edu const std::string &cwd, 2183114Sgblack@eecs.umich.edu uint64_t _uid, uint64_t _euid, 2193114Sgblack@eecs.umich.edu uint64_t _gid, uint64_t _egid, 2203114Sgblack@eecs.umich.edu uint64_t _pid, uint64_t _ppid); 2212SN/A 2222561SN/A virtual void argsInit(int intSize, int pageSize); 2232378SN/A 2243114Sgblack@eecs.umich.edu // Id of the owner of the process 2253114Sgblack@eecs.umich.edu uint64_t __uid; 2263114Sgblack@eecs.umich.edu uint64_t __euid; 2273114Sgblack@eecs.umich.edu uint64_t __gid; 2283114Sgblack@eecs.umich.edu uint64_t __egid; 2293114Sgblack@eecs.umich.edu 2303114Sgblack@eecs.umich.edu // pid of the process and it's parent 2313114Sgblack@eecs.umich.edu uint64_t __pid; 2323114Sgblack@eecs.umich.edu uint64_t __ppid; 2333114Sgblack@eecs.umich.edu 234360SN/A public: 2353114Sgblack@eecs.umich.edu 2363114Sgblack@eecs.umich.edu inline uint64_t uid() {return __uid;} 2373114Sgblack@eecs.umich.edu inline uint64_t euid() {return __euid;} 2383114Sgblack@eecs.umich.edu inline uint64_t gid() {return __gid;} 2393114Sgblack@eecs.umich.edu inline uint64_t egid() {return __egid;} 2403114Sgblack@eecs.umich.edu inline uint64_t pid() {return __pid;} 2413114Sgblack@eecs.umich.edu inline uint64_t ppid() {return __ppid;} 2423114Sgblack@eecs.umich.edu 2433669Sbinkertn@umich.edu std::string 2443669Sbinkertn@umich.edu fullPath(const std::string &filename) 2453669Sbinkertn@umich.edu { 2463669Sbinkertn@umich.edu if (filename[0] == '/' || cwd.empty()) 2473669Sbinkertn@umich.edu return filename; 2483669Sbinkertn@umich.edu 2493669Sbinkertn@umich.edu std::string full = cwd; 2503669Sbinkertn@umich.edu 2513669Sbinkertn@umich.edu if (cwd[cwd.size() - 1] != '/') 2523669Sbinkertn@umich.edu full += '/'; 2533669Sbinkertn@umich.edu 2543669Sbinkertn@umich.edu return full + filename; 2553669Sbinkertn@umich.edu } 2563669Sbinkertn@umich.edu 2572680Sktlim@umich.edu virtual void syscall(int64_t callnum, ThreadContext *tc); 2582093SN/A 2592462SN/A virtual SyscallDesc* getDesc(int callnum) = 0; 2602715Sstever@eecs.umich.edu 2612715Sstever@eecs.umich.edu // this function is used to create the LiveProcess object, since 2622715Sstever@eecs.umich.edu // we can't tell which subclass of LiveProcess to use until we 2632715Sstever@eecs.umich.edu // open and look at the object file. 2642715Sstever@eecs.umich.edu static LiveProcess *create(const std::string &nm, 2652715Sstever@eecs.umich.edu System *_system, 2662715Sstever@eecs.umich.edu int stdin_fd, int stdout_fd, int stderr_fd, 2672715Sstever@eecs.umich.edu std::string executable, 2682715Sstever@eecs.umich.edu std::vector<std::string> &argv, 2693114Sgblack@eecs.umich.edu std::vector<std::string> &envp, 2703669Sbinkertn@umich.edu const std::string &cwd, 2713114Sgblack@eecs.umich.edu uint64_t _uid, uint64_t _euid, 2723114Sgblack@eecs.umich.edu uint64_t _gid, uint64_t _egid, 2733114Sgblack@eecs.umich.edu uint64_t _pid, uint64_t _ppid); 2742SN/A}; 2752SN/A 276360SN/A 2772SN/A#endif // !FULL_SYSTEM 2782SN/A 279360SN/A#endif // __PROCESS_HH__ 280