process.hh revision 11851
12SN/A/* 210298Salexandru.dutu@amd.com * Copyright (c) 2014 Advanced Micro Devices, Inc. 31762SN/A * Copyright (c) 2001-2005 The Regents of The University of Michigan 42SN/A * All rights reserved. 52SN/A * 62SN/A * Redistribution and use in source and binary forms, with or without 72SN/A * modification, are permitted provided that the following conditions are 82SN/A * met: redistributions of source code must retain the above copyright 92SN/A * notice, this list of conditions and the following disclaimer; 102SN/A * redistributions in binary form must reproduce the above copyright 112SN/A * notice, this list of conditions and the following disclaimer in the 122SN/A * documentation and/or other materials provided with the distribution; 132SN/A * neither the name of the copyright holders nor the names of its 142SN/A * contributors may be used to endorse or promote products derived from 152SN/A * this software without specific prior written permission. 162SN/A * 172SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 182SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 192SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 202SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 212SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 222SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 232SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 242SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 252SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 262SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 272SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 282665Ssaidi@eecs.umich.edu * 292665Ssaidi@eecs.umich.edu * Authors: Nathan Binkert 302665Ssaidi@eecs.umich.edu * Steve Reinhardt 312SN/A */ 322SN/A 33360SN/A#ifndef __PROCESS_HH__ 34360SN/A#define __PROCESS_HH__ 352SN/A 3610930Sbrandon.potter@amd.com#include <array> 3711800Sbrandon.potter@amd.com#include <map> 384117Sgblack@eecs.umich.edu#include <string> 39180SN/A#include <vector> 402SN/A 416329Sgblack@eecs.umich.edu#include "arch/registers.hh" 422378SN/A#include "base/statistics.hh" 436214Snate@binkert.org#include "base/types.hh" 446658Snate@binkert.org#include "config/the_isa.hh" 458852Sandreas.hansson@arm.com#include "mem/se_translating_port_proxy.hh" 4610930Sbrandon.potter@amd.com#include "sim/fd_entry.hh" 4756SN/A#include "sim/sim_object.hh" 482SN/A 498737Skoansin.tan@gmail.comstruct ProcessParams; 5011800Sbrandon.potter@amd.com 5111800Sbrandon.potter@amd.comclass EmulatedDriver; 5211851Sbrandon.potter@amd.comclass ObjectFile; 5311800Sbrandon.potter@amd.comclass PageTableBase; 545154Sgblack@eecs.umich.educlass SyscallDesc; 5511800Sbrandon.potter@amd.comclass SyscallReturn; 565154Sgblack@eecs.umich.educlass System; 572680Sktlim@umich.educlass ThreadContext; 582378SN/A 595758Shsul@eecs.umich.edutemplate<class IntType> 605771Shsul@eecs.umich.edustruct AuxVector 615758Shsul@eecs.umich.edu{ 625758Shsul@eecs.umich.edu IntType a_type; 635771Shsul@eecs.umich.edu IntType a_val; 645758Shsul@eecs.umich.edu 655771Shsul@eecs.umich.edu AuxVector() 665758Shsul@eecs.umich.edu {} 675758Shsul@eecs.umich.edu 685771Shsul@eecs.umich.edu AuxVector(IntType type, IntType val); 695758Shsul@eecs.umich.edu}; 705758Shsul@eecs.umich.edu 712SN/Aclass Process : public SimObject 722SN/A{ 732SN/A public: 742SN/A 752378SN/A /// Pointer to object representing the system this process is 762378SN/A /// running on. 772378SN/A System *system; 782378SN/A 792680Sktlim@umich.edu // thread contexts associated with this process 8011005Sandreas.sandberg@arm.com std::vector<ContextID> contextIds; 81180SN/A 82180SN/A // number of CPUs (esxec contexts, really) assigned to this process. 835713Shsul@eecs.umich.edu unsigned int numCpus() { return contextIds.size(); } 842SN/A 852SN/A // record of blocked context 862SN/A struct WaitRec 872SN/A { 882SN/A Addr waitChan; 892680Sktlim@umich.edu ThreadContext *waitingContext; 902SN/A 912680Sktlim@umich.edu WaitRec(Addr chan, ThreadContext *ctx) 922SN/A : waitChan(chan), waitingContext(ctx) 935543Ssaidi@eecs.umich.edu { } 942SN/A }; 952SN/A 962SN/A // list of all blocked contexts 972SN/A std::list<WaitRec> waitList; 982SN/A 995543Ssaidi@eecs.umich.edu Addr brk_point; // top of the data segment 1002SN/A 1015543Ssaidi@eecs.umich.edu Addr stack_base; // stack segment base (highest address) 1025543Ssaidi@eecs.umich.edu unsigned stack_size; // initial stack size 1035543Ssaidi@eecs.umich.edu Addr stack_min; // lowest address accessed on the stack 1042SN/A 1055154Sgblack@eecs.umich.edu // The maximum size allowed for the stack. 1065154Sgblack@eecs.umich.edu Addr max_stack_size; 1075154Sgblack@eecs.umich.edu 1082SN/A // addr to use for next stack region (for multithreaded apps) 1092SN/A Addr next_thread_stack_base; 1102SN/A 111360SN/A // Base of region for mmaps (when user doesn't specify an address). 1121408SN/A Addr mmap_end; 113360SN/A 11411386Ssteve.reinhardt@amd.com // Does mmap region grow upward or downward from mmap_end? Most 11511386Ssteve.reinhardt@amd.com // platforms grow downward, but a few (such as Alpha) grow upward 11611386Ssteve.reinhardt@amd.com // instead, so they can override thie method to return false. 11711386Ssteve.reinhardt@amd.com virtual bool mmapGrowsDown() const { return true; } 11811386Ssteve.reinhardt@amd.com 1191514SN/A // Base of region for nxm data 1201514SN/A Addr nxm_start; 1211514SN/A Addr nxm_end; 1221514SN/A 1235999Snate@binkert.org Stats::Scalar num_syscalls; // number of syscalls executed 1242SN/A 1252SN/A protected: 1262SN/A // constructor 1278325Ssteve.reinhardt@amd.com Process(ProcessParams *params); 1282SN/A 12911169Sandreas.hansson@arm.com void initState() override; 1302SN/A 13111168Sandreas.hansson@arm.com DrainState drain() override; 13210905Sandreas.sandberg@arm.com 1332378SN/A public: 1342SN/A 13510299Salexandru.dutu@amd.com // flag for using architecture specific page table 13610299Salexandru.dutu@amd.com bool useArchPT; 13710554Salexandru.dutu@amd.com // running KvmCPU in SE mode requires special initialization 13810554Salexandru.dutu@amd.com bool kvmInSE; 13910554Salexandru.dutu@amd.com 14010298Salexandru.dutu@amd.com PageTableBase* pTable; 1418852Sandreas.hansson@arm.com 1428852Sandreas.hansson@arm.com protected: 1438852Sandreas.hansson@arm.com /// Memory proxy for initialization (image loading) 1448852Sandreas.hansson@arm.com SETranslatingPortProxy initVirtMem; 1458852Sandreas.hansson@arm.com 1462SN/A private: 14710929Sbrandon.potter@amd.com static const int NUM_FDS = 1024; 1485282Srstrong@cs.ucsd.edu 14910929Sbrandon.potter@amd.com // File descriptor remapping support. 15010930Sbrandon.potter@amd.com std::shared_ptr<std::array<FDEntry, NUM_FDS>> fd_array; 15110930Sbrandon.potter@amd.com 15210930Sbrandon.potter@amd.com // Standard file descriptor options for initialization and checkpoints. 15310930Sbrandon.potter@amd.com std::map<std::string, int> imap; 15410930Sbrandon.potter@amd.com std::map<std::string, int> oemap; 1552SN/A 1562SN/A public: 15710930Sbrandon.potter@amd.com // inherit file descriptor map from another process (necessary for clone) 15810932Sbrandon.potter@amd.com void inheritFDArray(Process *p); 1592SN/A 1602SN/A // override of virtual SimObject method: register statistics 16111169Sandreas.hansson@arm.com void regStats() override; 1622SN/A 1635713Shsul@eecs.umich.edu // After getting registered with system object, tell process which 1645713Shsul@eecs.umich.edu // system-wide context id it is assigned. 16511005Sandreas.sandberg@arm.com void assignThreadContext(ContextID context_id) 1665713Shsul@eecs.umich.edu { 1675713Shsul@eecs.umich.edu contextIds.push_back(context_id); 1685713Shsul@eecs.umich.edu } 169180SN/A 1705713Shsul@eecs.umich.edu // Find a free context to use 1718325Ssteve.reinhardt@amd.com ThreadContext *findFreeContext(); 1722SN/A 1732SN/A // generate new target fd for sim_fd 17410932Sbrandon.potter@amd.com int allocFD(int sim_fd, const std::string& filename, int flags, int mode, 17510932Sbrandon.potter@amd.com bool pipe); 1761970SN/A 17710929Sbrandon.potter@amd.com // disassociate target fd with simulator fd and cleanup subsidiary fields 17810932Sbrandon.potter@amd.com void resetFDEntry(int tgt_fd); 1792SN/A 1802SN/A // look up simulator fd for given target fd 18110932Sbrandon.potter@amd.com int getSimFD(int tgt_fd); 1822SN/A 18310930Sbrandon.potter@amd.com // look up fd entry for a given target fd 18410932Sbrandon.potter@amd.com FDEntry *getFDEntry(int tgt_fd); 1855282Srstrong@cs.ucsd.edu 18610929Sbrandon.potter@amd.com // look up target fd for given host fd 18710929Sbrandon.potter@amd.com // Assumes a 1:1 mapping between target file descriptor and host file 18810929Sbrandon.potter@amd.com // descriptor. Given the current API, this must be true given that it's 18910929Sbrandon.potter@amd.com // not possible to map multiple target file descriptors to the same host 19010929Sbrandon.potter@amd.com // file descriptor 19110932Sbrandon.potter@amd.com int getTgtFD(int sim_fd); 19210929Sbrandon.potter@amd.com 1935282Srstrong@cs.ucsd.edu // fix all offsets for currently open files and save them 19410932Sbrandon.potter@amd.com void fixFileOffsets(); 1955282Srstrong@cs.ucsd.edu 1965282Srstrong@cs.ucsd.edu // find all offsets for currently open files and save them 19710932Sbrandon.potter@amd.com void findFileOffsets(); 1985282Srstrong@cs.ucsd.edu 1995282Srstrong@cs.ucsd.edu // set the source of this read pipe for a checkpoint resume 2005282Srstrong@cs.ucsd.edu void setReadPipeSource(int read_pipe_fd, int source_fd); 2015282Srstrong@cs.ucsd.edu 2023311Ssaidi@eecs.umich.edu 2038601Ssteve.reinhardt@amd.com void allocateMem(Addr vaddr, int64_t size, bool clobber = false); 2048601Ssteve.reinhardt@amd.com 2058539Sgblack@eecs.umich.edu /// Attempt to fix up a fault at vaddr by allocating a page on the stack. 2068539Sgblack@eecs.umich.edu /// @return Whether the fault has been fixed. 2078539Sgblack@eecs.umich.edu bool fixupStackFault(Addr vaddr); 2084434Ssaidi@eecs.umich.edu 2099110Ssteve.reinhardt@amd.com /** 21010558Salexandru.dutu@amd.com * Maps a contiguous range of virtual addresses in this process's 2119110Ssteve.reinhardt@amd.com * address space to a contiguous range of physical addresses. 21210558Salexandru.dutu@amd.com * This function exists primarily to expose the map operation to 21310558Salexandru.dutu@amd.com * python, so that configuration scripts can set up mappings in SE mode. 2149110Ssteve.reinhardt@amd.com * 2159110Ssteve.reinhardt@amd.com * @param vaddr The starting virtual address of the range. 2169110Ssteve.reinhardt@amd.com * @param paddr The starting physical address of the range. 2179110Ssteve.reinhardt@amd.com * @param size The length of the range in bytes. 21810558Salexandru.dutu@amd.com * @param cacheable Specifies whether accesses are cacheable. 2199110Ssteve.reinhardt@amd.com * @return True if the map operation was successful. (At this 2209110Ssteve.reinhardt@amd.com * point in time, the map operation always succeeds.) 2219110Ssteve.reinhardt@amd.com */ 22210558Salexandru.dutu@amd.com bool map(Addr vaddr, Addr paddr, int size, bool cacheable = true); 2239110Ssteve.reinhardt@amd.com 22411168Sandreas.hansson@arm.com void serialize(CheckpointOut &cp) const override; 22511168Sandreas.hansson@arm.com void unserialize(CheckpointIn &cp) override; 22611801Sbrandon.potter@amd.com 22711851Sbrandon.potter@amd.com protected: 22811851Sbrandon.potter@amd.com ObjectFile *objFile; 22911851Sbrandon.potter@amd.com std::vector<std::string> argv; 23011851Sbrandon.potter@amd.com std::vector<std::string> envp; 23111851Sbrandon.potter@amd.com std::string cwd; 23211851Sbrandon.potter@amd.com std::string executable; 23311851Sbrandon.potter@amd.com 23411851Sbrandon.potter@amd.com Process(ProcessParams *params, ObjectFile *obj_file); 23511851Sbrandon.potter@amd.com 23611801Sbrandon.potter@amd.com public: 23711801Sbrandon.potter@amd.com // Id of the owner of the process 23811801Sbrandon.potter@amd.com uint64_t _uid; 23911801Sbrandon.potter@amd.com uint64_t _euid; 24011801Sbrandon.potter@amd.com uint64_t _gid; 24111801Sbrandon.potter@amd.com uint64_t _egid; 24211801Sbrandon.potter@amd.com 24311801Sbrandon.potter@amd.com // pid of the process and it's parent 24411801Sbrandon.potter@amd.com uint64_t _pid; 24511801Sbrandon.potter@amd.com uint64_t _ppid; 24611801Sbrandon.potter@amd.com 24710496Ssteve.reinhardt@amd.com // Emulated drivers available to this process 24810496Ssteve.reinhardt@amd.com std::vector<EmulatedDriver *> drivers; 24910496Ssteve.reinhardt@amd.com 2504793Sgblack@eecs.umich.edu enum AuxiliaryVectorType { 2514793Sgblack@eecs.umich.edu M5_AT_NULL = 0, 2524793Sgblack@eecs.umich.edu M5_AT_IGNORE = 1, 2534793Sgblack@eecs.umich.edu M5_AT_EXECFD = 2, 2544793Sgblack@eecs.umich.edu M5_AT_PHDR = 3, 2554793Sgblack@eecs.umich.edu M5_AT_PHENT = 4, 2564793Sgblack@eecs.umich.edu M5_AT_PHNUM = 5, 2574793Sgblack@eecs.umich.edu M5_AT_PAGESZ = 6, 2584793Sgblack@eecs.umich.edu M5_AT_BASE = 7, 2594793Sgblack@eecs.umich.edu M5_AT_FLAGS = 8, 2604793Sgblack@eecs.umich.edu M5_AT_ENTRY = 9, 2614793Sgblack@eecs.umich.edu M5_AT_NOTELF = 10, 2624793Sgblack@eecs.umich.edu M5_AT_UID = 11, 2634793Sgblack@eecs.umich.edu M5_AT_EUID = 12, 2644793Sgblack@eecs.umich.edu M5_AT_GID = 13, 2654793Sgblack@eecs.umich.edu M5_AT_EGID = 14, 2664793Sgblack@eecs.umich.edu // The following may be specific to Linux 2674793Sgblack@eecs.umich.edu M5_AT_PLATFORM = 15, 2684793Sgblack@eecs.umich.edu M5_AT_HWCAP = 16, 2694793Sgblack@eecs.umich.edu M5_AT_CLKTCK = 17, 2704793Sgblack@eecs.umich.edu 2714793Sgblack@eecs.umich.edu M5_AT_SECURE = 23, 2726399Sgblack@eecs.umich.edu M5_BASE_PLATFORM = 24, 2736399Sgblack@eecs.umich.edu M5_AT_RANDOM = 25, 2746399Sgblack@eecs.umich.edu 2756399Sgblack@eecs.umich.edu M5_AT_EXECFN = 31, 2764793Sgblack@eecs.umich.edu 2774793Sgblack@eecs.umich.edu M5_AT_VECTOR_SIZE = 44 2784793Sgblack@eecs.umich.edu }; 2794793Sgblack@eecs.umich.edu 28011801Sbrandon.potter@amd.com inline uint64_t uid() { return _uid; } 28111801Sbrandon.potter@amd.com inline uint64_t euid() { return _euid; } 28211801Sbrandon.potter@amd.com inline uint64_t gid() { return _gid; } 28311801Sbrandon.potter@amd.com inline uint64_t egid() { return _egid; } 28411801Sbrandon.potter@amd.com inline uint64_t pid() { return _pid; } 28511801Sbrandon.potter@amd.com inline uint64_t ppid() { return _ppid; } 2863114Sgblack@eecs.umich.edu 2879144Ssteve.reinhardt@amd.com // provide program name for debug messages 28811851Sbrandon.potter@amd.com const char *progName() const { return executable.c_str(); } 2899144Ssteve.reinhardt@amd.com 2903669Sbinkertn@umich.edu std::string 2913669Sbinkertn@umich.edu fullPath(const std::string &filename) 2923669Sbinkertn@umich.edu { 2933669Sbinkertn@umich.edu if (filename[0] == '/' || cwd.empty()) 2943669Sbinkertn@umich.edu return filename; 2953669Sbinkertn@umich.edu 2963669Sbinkertn@umich.edu std::string full = cwd; 2973669Sbinkertn@umich.edu 2983669Sbinkertn@umich.edu if (cwd[cwd.size() - 1] != '/') 2993669Sbinkertn@umich.edu full += '/'; 3003669Sbinkertn@umich.edu 3013669Sbinkertn@umich.edu return full + filename; 3023669Sbinkertn@umich.edu } 3033669Sbinkertn@umich.edu 3045513SMichael.Adler@intel.com std::string getcwd() const { return cwd; } 3055513SMichael.Adler@intel.com 30611851Sbrandon.potter@amd.com void syscall(int64_t callnum, ThreadContext *tc); 3076701Sgblack@eecs.umich.edu 3086701Sgblack@eecs.umich.edu virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int &i) = 0; 3096701Sgblack@eecs.umich.edu virtual TheISA::IntReg getSyscallArg(ThreadContext *tc, int &i, int width); 3105958Sgblack@eecs.umich.edu virtual void setSyscallArg(ThreadContext *tc, 3115958Sgblack@eecs.umich.edu int i, TheISA::IntReg val) = 0; 3125958Sgblack@eecs.umich.edu virtual void setSyscallReturn(ThreadContext *tc, 3135958Sgblack@eecs.umich.edu SyscallReturn return_value) = 0; 3142093SN/A 3158325Ssteve.reinhardt@amd.com virtual SyscallDesc *getDesc(int callnum) = 0; 3162715Sstever@eecs.umich.edu 31710496Ssteve.reinhardt@amd.com /** 31810496Ssteve.reinhardt@amd.com * Find an emulated device driver. 31910496Ssteve.reinhardt@amd.com * 32010496Ssteve.reinhardt@amd.com * @param filename Name of the device (under /dev) 32110496Ssteve.reinhardt@amd.com * @return Pointer to driver object if found, else NULL 32210496Ssteve.reinhardt@amd.com */ 32310496Ssteve.reinhardt@amd.com EmulatedDriver *findDriver(std::string filename); 32410496Ssteve.reinhardt@amd.com 32511389Sbrandon.potter@amd.com // This function acts as a callback to update the bias value in 32611389Sbrandon.potter@amd.com // the object file because the parameters needed to calculate the 32711389Sbrandon.potter@amd.com // bias are not available when the object file is created. 32811389Sbrandon.potter@amd.com void updateBias(); 32911389Sbrandon.potter@amd.com 33011392Sbrandon.potter@amd.com ObjectFile *getInterpreter(); 33111392Sbrandon.potter@amd.com 33211389Sbrandon.potter@amd.com Addr getBias(); 33311389Sbrandon.potter@amd.com Addr getStartPC(); 3342SN/A}; 3352SN/A 336360SN/A#endif // __PROCESS_HH__ 337