process.hh 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 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" 484111Sgblack@eecs.umich.edu#include "sim/host.hh" 4956SN/A#include "sim/sim_object.hh" 502SN/A 515154Sgblack@eecs.umich.educlass GDBListener; 525154Sgblack@eecs.umich.educlass PageTable; 535154Sgblack@eecs.umich.educlass ProcessParams; 545154Sgblack@eecs.umich.educlass LiveProcessParams; 555154Sgblack@eecs.umich.educlass SyscallDesc; 565154Sgblack@eecs.umich.educlass System; 572680Sktlim@umich.educlass ThreadContext; 582401SN/Aclass TranslatingPort; 593971Sgblack@eecs.umich.edunamespace TheISA 603971Sgblack@eecs.umich.edu{ 613971Sgblack@eecs.umich.edu class RemoteGDB; 623971Sgblack@eecs.umich.edu} 632378SN/A 642SN/Aclass Process : public SimObject 652SN/A{ 662SN/A public: 672SN/A 682378SN/A /// Pointer to object representing the system this process is 692378SN/A /// running on. 702378SN/A System *system; 712378SN/A 722680Sktlim@umich.edu // have we initialized a thread context from this process? If 732SN/A // yes, subsequent contexts are assumed to be for dynamically 742SN/A // created threads and are not initialized. 752SN/A bool initialContextLoaded; 762SN/A 772680Sktlim@umich.edu // thread contexts associated with this process 782680Sktlim@umich.edu std::vector<ThreadContext *> threadContexts; 79180SN/A 803971Sgblack@eecs.umich.edu // remote gdb objects 813971Sgblack@eecs.umich.edu std::vector<TheISA::RemoteGDB *> remoteGDB; 823971Sgblack@eecs.umich.edu std::vector<GDBListener *> gdbListen; 833971Sgblack@eecs.umich.edu bool breakpoint(); 843971Sgblack@eecs.umich.edu 85180SN/A // number of CPUs (esxec contexts, really) assigned to this process. 862680Sktlim@umich.edu unsigned int numCpus() { return threadContexts.size(); } 872SN/A 882SN/A // record of blocked context 892SN/A struct WaitRec 902SN/A { 912SN/A Addr waitChan; 922680Sktlim@umich.edu ThreadContext *waitingContext; 932SN/A 942680Sktlim@umich.edu WaitRec(Addr chan, ThreadContext *ctx) 952SN/A : waitChan(chan), waitingContext(ctx) 962378SN/A { } 972SN/A }; 982SN/A 992SN/A // list of all blocked contexts 1002SN/A std::list<WaitRec> waitList; 1012SN/A 1022SN/A Addr brk_point; // top of the data segment 1032SN/A 1042SN/A Addr stack_base; // stack segment base (highest address) 1052SN/A unsigned stack_size; // initial stack size 1062SN/A Addr stack_min; // lowest address accessed on the stack 1072SN/A 1085154Sgblack@eecs.umich.edu // The maximum size allowed for the stack. 1095154Sgblack@eecs.umich.edu Addr max_stack_size; 1105154Sgblack@eecs.umich.edu 1112SN/A // addr to use for next stack region (for multithreaded apps) 1122SN/A Addr next_thread_stack_base; 1132SN/A 114360SN/A // Base of region for mmaps (when user doesn't specify an address). 1151408SN/A Addr mmap_start; 1161408SN/A Addr mmap_end; 117360SN/A 1181514SN/A // Base of region for nxm data 1191514SN/A Addr nxm_start; 1201514SN/A Addr nxm_end; 1211514SN/A 1222SN/A std::string prog_fname; // file name 1232SN/A 124729SN/A Stats::Scalar<> num_syscalls; // number of syscalls executed 1252SN/A 1262SN/A 1272SN/A protected: 1282SN/A // constructor 1295154Sgblack@eecs.umich.edu Process(ProcessParams * params); 1302SN/A 1311395SN/A // post initialization startup 1321395SN/A virtual void startup(); 1332SN/A 1342SN/A protected: 1352378SN/A /// Memory object for initialization (image loading) 1362401SN/A TranslatingPort *initVirtMem; 1372378SN/A 1382378SN/A public: 1392378SN/A PageTable *pTable; 1402SN/A 1414997Sgblack@eecs.umich.edu //This id is assigned by m5 and is used to keep process' tlb entries 1424997Sgblack@eecs.umich.edu //separated. 1434997Sgblack@eecs.umich.edu uint64_t M5_pid; 1444997Sgblack@eecs.umich.edu 1452SN/A private: 1462SN/A // file descriptor remapping support 1471970SN/A static const int MAX_FD = 256; // max legal fd value 1482SN/A int fd_map[MAX_FD+1]; 1492SN/A 1502SN/A public: 1512SN/A // static helper functions to generate file descriptors for constructor 1522SN/A static int openInputFile(const std::string &filename); 1532SN/A static int openOutputFile(const std::string &filename); 1542SN/A 1552SN/A // override of virtual SimObject method: register statistics 1562SN/A virtual void regStats(); 1572SN/A 1582680Sktlim@umich.edu // register a thread context for this process. 1592680Sktlim@umich.edu // returns tc's cpu number (index into threadContexts[]) 1602680Sktlim@umich.edu int registerThreadContext(ThreadContext *tc); 161180SN/A 162180SN/A 1632680Sktlim@umich.edu void replaceThreadContext(ThreadContext *tc, int tcIndex); 1642SN/A 1652SN/A // map simulator fd sim_fd to target fd tgt_fd 1662SN/A void dup_fd(int sim_fd, int tgt_fd); 1672SN/A 1682SN/A // generate new target fd for sim_fd 1691970SN/A int alloc_fd(int sim_fd); 1701970SN/A 1711970SN/A // free target fd (e.g., after close) 1721970SN/A void free_fd(int tgt_fd); 1732SN/A 1742SN/A // look up simulator fd for given target fd 1752SN/A int sim_fd(int tgt_fd); 1762SN/A 1772680Sktlim@umich.edu virtual void syscall(int64_t callnum, ThreadContext *tc) = 0; 1783311Ssaidi@eecs.umich.edu 1794434Ssaidi@eecs.umich.edu // check if the this addr is on the next available page and allocate it 1804434Ssaidi@eecs.umich.edu // if it's not we'll panic 1814434Ssaidi@eecs.umich.edu bool checkAndAllocNextPage(Addr vaddr); 1824434Ssaidi@eecs.umich.edu 1833311Ssaidi@eecs.umich.edu void serialize(std::ostream &os); 1843311Ssaidi@eecs.umich.edu void unserialize(Checkpoint *cp, const std::string §ion); 1852SN/A}; 1862SN/A 1872SN/A// 1882SN/A// "Live" process with system calls redirected to host system 1892SN/A// 190360SN/Aclass ObjectFile; 1912SN/Aclass LiveProcess : public Process 1922SN/A{ 193360SN/A protected: 1942378SN/A ObjectFile *objFile; 1952378SN/A std::vector<std::string> argv; 1962378SN/A std::vector<std::string> envp; 1973669Sbinkertn@umich.edu std::string cwd; 1982378SN/A 1995154Sgblack@eecs.umich.edu LiveProcess(LiveProcessParams * params, ObjectFile *objFile); 2002SN/A 2012561SN/A virtual void argsInit(int intSize, int pageSize); 2022378SN/A 2033114Sgblack@eecs.umich.edu // Id of the owner of the process 2043114Sgblack@eecs.umich.edu uint64_t __uid; 2053114Sgblack@eecs.umich.edu uint64_t __euid; 2063114Sgblack@eecs.umich.edu uint64_t __gid; 2073114Sgblack@eecs.umich.edu uint64_t __egid; 2083114Sgblack@eecs.umich.edu 2093114Sgblack@eecs.umich.edu // pid of the process and it's parent 2103114Sgblack@eecs.umich.edu uint64_t __pid; 2113114Sgblack@eecs.umich.edu uint64_t __ppid; 2123114Sgblack@eecs.umich.edu 213360SN/A public: 2143114Sgblack@eecs.umich.edu 2154793Sgblack@eecs.umich.edu enum AuxiliaryVectorType { 2164793Sgblack@eecs.umich.edu M5_AT_NULL = 0, 2174793Sgblack@eecs.umich.edu M5_AT_IGNORE = 1, 2184793Sgblack@eecs.umich.edu M5_AT_EXECFD = 2, 2194793Sgblack@eecs.umich.edu M5_AT_PHDR = 3, 2204793Sgblack@eecs.umich.edu M5_AT_PHENT = 4, 2214793Sgblack@eecs.umich.edu M5_AT_PHNUM = 5, 2224793Sgblack@eecs.umich.edu M5_AT_PAGESZ = 6, 2234793Sgblack@eecs.umich.edu M5_AT_BASE = 7, 2244793Sgblack@eecs.umich.edu M5_AT_FLAGS = 8, 2254793Sgblack@eecs.umich.edu M5_AT_ENTRY = 9, 2264793Sgblack@eecs.umich.edu M5_AT_NOTELF = 10, 2274793Sgblack@eecs.umich.edu M5_AT_UID = 11, 2284793Sgblack@eecs.umich.edu M5_AT_EUID = 12, 2294793Sgblack@eecs.umich.edu M5_AT_GID = 13, 2304793Sgblack@eecs.umich.edu M5_AT_EGID = 14, 2314793Sgblack@eecs.umich.edu // The following may be specific to Linux 2324793Sgblack@eecs.umich.edu M5_AT_PLATFORM = 15, 2334793Sgblack@eecs.umich.edu M5_AT_HWCAP = 16, 2344793Sgblack@eecs.umich.edu M5_AT_CLKTCK = 17, 2354793Sgblack@eecs.umich.edu 2364793Sgblack@eecs.umich.edu M5_AT_SECURE = 23, 2374793Sgblack@eecs.umich.edu 2384793Sgblack@eecs.umich.edu M5_AT_VECTOR_SIZE = 44 2394793Sgblack@eecs.umich.edu }; 2404793Sgblack@eecs.umich.edu 2413114Sgblack@eecs.umich.edu inline uint64_t uid() {return __uid;} 2423114Sgblack@eecs.umich.edu inline uint64_t euid() {return __euid;} 2433114Sgblack@eecs.umich.edu inline uint64_t gid() {return __gid;} 2443114Sgblack@eecs.umich.edu inline uint64_t egid() {return __egid;} 2453114Sgblack@eecs.umich.edu inline uint64_t pid() {return __pid;} 2463114Sgblack@eecs.umich.edu inline uint64_t ppid() {return __ppid;} 2473114Sgblack@eecs.umich.edu 2483669Sbinkertn@umich.edu std::string 2493669Sbinkertn@umich.edu fullPath(const std::string &filename) 2503669Sbinkertn@umich.edu { 2513669Sbinkertn@umich.edu if (filename[0] == '/' || cwd.empty()) 2523669Sbinkertn@umich.edu return filename; 2533669Sbinkertn@umich.edu 2543669Sbinkertn@umich.edu std::string full = cwd; 2553669Sbinkertn@umich.edu 2563669Sbinkertn@umich.edu if (cwd[cwd.size() - 1] != '/') 2573669Sbinkertn@umich.edu full += '/'; 2583669Sbinkertn@umich.edu 2593669Sbinkertn@umich.edu return full + filename; 2603669Sbinkertn@umich.edu } 2613669Sbinkertn@umich.edu 2622680Sktlim@umich.edu virtual void syscall(int64_t callnum, ThreadContext *tc); 2632093SN/A 2642462SN/A virtual SyscallDesc* getDesc(int callnum) = 0; 2652715Sstever@eecs.umich.edu 2662715Sstever@eecs.umich.edu // this function is used to create the LiveProcess object, since 2672715Sstever@eecs.umich.edu // we can't tell which subclass of LiveProcess to use until we 2682715Sstever@eecs.umich.edu // open and look at the object file. 2695154Sgblack@eecs.umich.edu static LiveProcess *create(LiveProcessParams * params); 2702SN/A}; 2712SN/A 272360SN/A 2732SN/A#endif // !FULL_SYSTEM 2742SN/A 275360SN/A#endif // __PROCESS_HH__ 276