process.cc

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· CC 代码 · 共 583 行 · 第 1/2 页

/*
 * Copyright (c) 2001, 2002, 2003, 2004, 2005
 * The Regents of The University of Michigan
 * All Rights Reserved
 *
 * This code is part of the M5 simulator.
 *
 * Permission is granted to use, copy, create derivative works and
 * redistribute this software and such derivative works for any
 * purpose, so long as the copyright notice above, this grant of
 * permission, and the disclaimer below appear in all copies made; and
 * so long as the name of The University of Michigan is not used in
 * any advertising or publicity pertaining to the use or distribution
 * of this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE
 * LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, SPECIAL, INDIRECT,
 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGES.
 *
 * Authors: Steven K. Reinhardt
 *          Ali G. Saidi
 */

#include "arch/alpha/tru64/tru64.hh"
#include "arch/alpha/isa_traits.hh"
#include "arch/alpha/tru64/process.hh"

#include "cpu/thread_context.hh"
#include "kern/tru64/tru64.hh"

#include "sim/process.hh"
#include "sim/syscall_emul.hh"

using namespace std;
using namespace AlphaISA;

/// Target uname() handler.
static SyscallReturn
unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
          ThreadContext *tc)
{
    TypedBufferArg<AlphaTru64::utsname> name(tc->getSyscallArg(0));

    strcpy(name->sysname, "OSF1");
    strcpy(name->nodename, "m5.eecs.umich.edu");
    strcpy(name->release, "V5.1");
    strcpy(name->version, "732");
    strcpy(name->machine, "alpha");

    name.copyOut(tc->getMemPort());
    return 0;
}

/// Target getsysyinfo() handler.
static SyscallReturn
getsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
               ThreadContext *tc)
{
    unsigned op = tc->getSyscallArg(0);
    unsigned nbytes = tc->getSyscallArg(2);

    switch (op) {

      case AlphaTru64::GSI_MAX_CPU: {
          TypedBufferArg<uint32_t> max_cpu(tc->getSyscallArg(1));
          *max_cpu = htog((uint32_t)process->numCpus());
          max_cpu.copyOut(tc->getMemPort());
          return 1;
      }

      case AlphaTru64::GSI_CPUS_IN_BOX: {
          TypedBufferArg<uint32_t> cpus_in_box(tc->getSyscallArg(1));
          *cpus_in_box = htog((uint32_t)process->numCpus());
          cpus_in_box.copyOut(tc->getMemPort());
          return 1;
      }

      case AlphaTru64::GSI_PHYSMEM: {
          TypedBufferArg<uint64_t> physmem(tc->getSyscallArg(1));
          *physmem = htog((uint64_t)1024 * 1024);	// physical memory in KB
          physmem.copyOut(tc->getMemPort());
          return 1;
      }

      case AlphaTru64::GSI_CPU_INFO: {
          TypedBufferArg<AlphaTru64::cpu_info> infop(tc->getSyscallArg(1));

          infop->current_cpu = htog(0);
          infop->cpus_in_box = htog(process->numCpus());
          infop->cpu_type = htog(57);
          infop->ncpus = htog(process->numCpus());
          uint64_t cpumask = (1 << process->numCpus()) - 1;
          infop->cpus_present = infop->cpus_running = htog(cpumask);
          infop->cpu_binding = htog(0);
          infop->cpu_ex_binding = htog(0);
          infop->mhz = htog(667);

          infop.copyOut(tc->getMemPort());
          return 1;
      }

      case AlphaTru64::GSI_PROC_TYPE: {
          TypedBufferArg<uint64_t> proc_type(tc->getSyscallArg(1));
          *proc_type = htog((uint64_t)11);
          proc_type.copyOut(tc->getMemPort());
          return 1;
      }

      case AlphaTru64::GSI_PLATFORM_NAME: {
          BufferArg bufArg(tc->getSyscallArg(1), nbytes);
          strncpy((char *)bufArg.bufferPtr(),
                  "COMPAQ Professional Workstation XP1000",
                  nbytes);
          bufArg.copyOut(tc->getMemPort());
          return 1;
      }

      case AlphaTru64::GSI_CLK_TCK: {
          TypedBufferArg<uint64_t> clk_hz(tc->getSyscallArg(1));
          *clk_hz = htog((uint64_t)1024);
          clk_hz.copyOut(tc->getMemPort());
          return 1;
      }

      default:
        warn("getsysinfo: unknown op %d\n", op);
        break;
    }

    return 0;
}

/// Target setsysyinfo() handler.
static SyscallReturn
setsysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
               ThreadContext *tc)
{
    unsigned op = tc->getSyscallArg(0);

    switch (op) {
      case AlphaTru64::SSI_IEEE_FP_CONTROL:
        warn("setsysinfo: ignoring ieee_set_fp_control() arg 0x%x\n",
             tc->getSyscallArg(1));
        break;

      default:
        warn("setsysinfo: unknown op %d\n", op);
        break;
    }

    return 0;
}


/// Target table() handler.
static
SyscallReturn tableFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
                        ThreadContext *tc)
{
    using namespace std;
    using namespace TheISA;

    int id = tc->getSyscallArg(0);		// table ID
    int index = tc->getSyscallArg(1);	// index into table
    // arg 2 is buffer pointer; type depends on table ID
    int nel = tc->getSyscallArg(3);		// number of elements
    int lel = tc->getSyscallArg(4);		// expected element size

    switch (id) {
      case AlphaTru64::TBL_SYSINFO: {
          if (index != 0 || nel != 1 || lel != sizeof(Tru64::tbl_sysinfo))
              return -EINVAL;
          TypedBufferArg<Tru64::tbl_sysinfo> elp(tc->getSyscallArg(2));

          const int clk_hz = one_million;
          elp->si_user = htog(curTick / (Clock::Frequency / clk_hz));
          elp->si_nice = htog(0);
          elp->si_sys = htog(0);
          elp->si_idle = htog(0);
          elp->wait = htog(0);
          elp->si_hz = htog(clk_hz);
          elp->si_phz = htog(clk_hz);
          elp->si_boottime = htog(seconds_since_epoch); // seconds since epoch?
          elp->si_max_procs = htog(process->numCpus());
          elp.copyOut(tc->getMemPort());
          return 0;
      }

      default:
        cerr << "table(): id " << id << " unknown." << endl;
        return -EINVAL;
    }
}

SyscallDesc AlphaTru64Process::syscallDescs[] = {
    /* 0 */ SyscallDesc("syscall (#0)", AlphaTru64::indirectSyscallFunc,
                        SyscallDesc::SuppressReturnValue),
    /* 1 */ SyscallDesc("exit", exitFunc),
    /* 2 */ SyscallDesc("fork", unimplementedFunc),
    /* 3 */ SyscallDesc("read", readFunc),
    /* 4 */ SyscallDesc("write", writeFunc),
    /* 5 */ SyscallDesc("old_open", unimplementedFunc),
    /* 6 */ SyscallDesc("close", closeFunc),
    /* 7 */ SyscallDesc("wait4", unimplementedFunc),
    /* 8 */ SyscallDesc("old_creat", unimplementedFunc),
    /* 9 */ SyscallDesc("link", unimplementedFunc),
    /* 10 */ SyscallDesc("unlink", unlinkFunc),
    /* 11 */ SyscallDesc("execv", unimplementedFunc),
    /* 12 */ SyscallDesc("chdir", unimplementedFunc),
    /* 13 */ SyscallDesc("fchdir", unimplementedFunc),
    /* 14 */ SyscallDesc("mknod", unimplementedFunc),
    /* 15 */ SyscallDesc("chmod", unimplementedFunc),
    /* 16 */ SyscallDesc("chown", unimplementedFunc),
    /* 17 */ SyscallDesc("obreak", obreakFunc),
    /* 18 */ SyscallDesc("pre_F64_getfsstat", unimplementedFunc),
    /* 19 */ SyscallDesc("lseek", lseekFunc),
    /* 20 */ SyscallDesc("getpid", getpidPseudoFunc),
    /* 21 */ SyscallDesc("mount", unimplementedFunc),
    /* 22 */ SyscallDesc("unmount", unimplementedFunc),
    /* 23 */ SyscallDesc("setuid", setuidFunc),
    /* 24 */ SyscallDesc("getuid", getuidPseudoFunc),
    /* 25 */ SyscallDesc("exec_with_loader", unimplementedFunc),
    /* 26 */ SyscallDesc("ptrace", unimplementedFunc),
    /* 27 */ SyscallDesc("recvmsg", unimplementedFunc),
    /* 28 */ SyscallDesc("sendmsg", unimplementedFunc),
    /* 29 */ SyscallDesc("recvfrom", unimplementedFunc),
    /* 30 */ SyscallDesc("accept", unimplementedFunc),
    /* 31 */ SyscallDesc("getpeername", unimplementedFunc),
    /* 32 */ SyscallDesc("getsockname", unimplementedFunc),
    /* 33 */ SyscallDesc("access", unimplementedFunc),
    /* 34 */ SyscallDesc("chflags", unimplementedFunc),
    /* 35 */ SyscallDesc("fchflags", unimplementedFunc),
    /* 36 */ SyscallDesc("sync", unimplementedFunc),
    /* 37 */ SyscallDesc("kill", unimplementedFunc),
    /* 38 */ SyscallDesc("old_stat", unimplementedFunc),
    /* 39 */ SyscallDesc("setpgid", unimplementedFunc),
    /* 40 */ SyscallDesc("old_lstat", unimplementedFunc),
    /* 41 */ SyscallDesc("dup", unimplementedFunc),
    /* 42 */ SyscallDesc("pipe", unimplementedFunc),
    /* 43 */ SyscallDesc("set_program_attributes", unimplementedFunc),
    /* 44 */ SyscallDesc("profil", unimplementedFunc),
    /* 45 */ SyscallDesc("open", openFunc<AlphaTru64>),
    /* 46 */ SyscallDesc("obsolete osigaction", unimplementedFunc),
    /* 47 */ SyscallDesc("getgid", getgidPseudoFunc),
    /* 48 */ SyscallDesc("sigprocmask", ignoreFunc),
    /* 49 */ SyscallDesc("getlogin", unimplementedFunc),
    /* 50 */ SyscallDesc("setlogin", unimplementedFunc),
    /* 51 */ SyscallDesc("acct", unimplementedFunc),
    /* 52 */ SyscallDesc("sigpending", unimplementedFunc),
    /* 53 */ SyscallDesc("classcntl", unimplementedFunc),
    /* 54 */ SyscallDesc("ioctl", ioctlFunc<AlphaTru64>),
    /* 55 */ SyscallDesc("reboot", unimplementedFunc),
    /* 56 */ SyscallDesc("revoke", unimplementedFunc),
    /* 57 */ SyscallDesc("symlink", unimplementedFunc),
    /* 58 */ SyscallDesc("readlink", unimplementedFunc),
    /* 59 */ SyscallDesc("execve", unimplementedFunc),
    /* 60 */ SyscallDesc("umask", unimplementedFunc),
    /* 61 */ SyscallDesc("chroot", unimplementedFunc),
    /* 62 */ SyscallDesc("old_fstat", unimplementedFunc),
    /* 63 */ SyscallDesc("getpgrp", unimplementedFunc),
    /* 64 */ SyscallDesc("getpagesize", getpagesizeFunc),
    /* 65 */ SyscallDesc("mremap", unimplementedFunc),
    /* 66 */ SyscallDesc("vfork", unimplementedFunc),
    /* 67 */ SyscallDesc("pre_F64_stat", statFunc<Tru64_PreF64>),
    /* 68 */ SyscallDesc("pre_F64_lstat", lstatFunc<Tru64_PreF64>),
    /* 69 */ SyscallDesc("sbrk", unimplementedFunc),
    /* 70 */ SyscallDesc("sstk", unimplementedFunc),
    /* 71 */ SyscallDesc("mmap", mmapFunc<AlphaTru64>),
    /* 72 */ SyscallDesc("ovadvise", unimplementedFunc),
    /* 73 */ SyscallDesc("munmap", munmapFunc),
    /* 74 */ SyscallDesc("mprotect", ignoreFunc),
    /* 75 */ SyscallDesc("madvise", unimplementedFunc),
    /* 76 */ SyscallDesc("old_vhangup", unimplementedFunc),
    /* 77 */ SyscallDesc("kmodcall", unimplementedFunc),
    /* 78 */ SyscallDesc("mincore", unimplementedFunc),
    /* 79 */ SyscallDesc("getgroups", unimplementedFunc),
    /* 80 */ SyscallDesc("setgroups", unimplementedFunc),
    /* 81 */ SyscallDesc("old_getpgrp", unimplementedFunc),
    /* 82 */ SyscallDesc("setpgrp", unimplementedFunc),
    /* 83 */ SyscallDesc("setitimer", unimplementedFunc),
    /* 84 */ SyscallDesc("old_wait", unimplementedFunc),
    /* 85 */ SyscallDesc("table", tableFunc),
    /* 86 */ SyscallDesc("getitimer", unimplementedFunc),
    /* 87 */ SyscallDesc("gethostname", gethostnameFunc),