traps.cc

ml-rsim 多处理器模拟器 支持类bsd操作系统

/*
 * Copyright (c) 2002 The Board of Trustees of the University of Illinois and
 *                    William Marsh Rice University
 * Copyright (c) 2002 The University of Utah
 * Copyright (c) 2002 The University of Notre Dame du Lac
 *
 * All rights reserved.
 *
 * Based on RSIM 1.0, developed by:
 *   Professor Sarita Adve's RSIM research group
 *   University of Illinois at Urbana-Champaign and
     William Marsh Rice University
 *   http://www.cs.uiuc.edu/rsim and http://www.ece.rice.edu/~rsim/dist.html
 * ML-RSIM/URSIM extensions by:
 *   The Impulse Research Group, University of Utah
 *   http://www.cs.utah.edu/impulse
 *   Lambert Schaelicke, University of Utah and University of Notre Dame du Lac
 *   http://www.cse.nd.edu/~lambert
 *   Mike Parker, University of Utah
 *   http://www.cs.utah.edu/~map
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal with the Software without restriction, including without
 * limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, subject to the following
 * conditions:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimers. 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimers in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of Professor Sarita Adve's RSIM research group,
 *    the University of Illinois at Urbana-Champaign, William Marsh Rice
 *    University, nor the names of its contributors may be used to endorse
 *    or promote products derived from this Software without specific prior
 *    written permission. 
 * 4. Neither the names of the ML-RSIM project, the URSIM project, the
 *    Impulse research group, the University of Utah, the University of
 *    Notre Dame du Lac, nor the names of its contributors may be used to
 *    endorse or promote products derived from this software without specific
 *    prior written permission. 
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS WITH THE SOFTWARE. 
 */

// make sure this won't cause problems w/ linux!
#define _FILE_OFFSET_BITS 64

#ifdef linux
#  define _GNU_SOURCE
#endif

#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <unistd.h>
#include <utime.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

#ifndef linux
#include <sys/ioccom.h>
#include <sys/systeminfo.h>
#include <sys/dirent.h>
#else
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/dirent.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <sys/utsname.h>
typedef struct timespec timespec_t;
_syscall3(int, getdents, uint, fd, struct dirent *, buf, uint, size);
#endif

#include <sys/param.h>


extern "C"
{
#include "sim_main/simsys.h"
#include "Caches/system.h"
#include "sim_main/util.h"
#include "sim_main/invoke_debugger.h"
}

#include "Processor/procstate.h"
#include "Processor/pagetable.h"
#include "Processor/userstat.h"
#include "Processor/exec.h"
#include "Processor/memunit.h"
#include "Processor/mainsim.h"
#include "Processor/simio.h"
#include "Processor/branchpred.h"
#include "Processor/fastnews.h"
#include "Processor/filedesc.h"
#include "Processor/tagcvt.hh"
#include "Processor/procstate.hh"
#include "Processor/active.hh"
#include "Processor/endian_swap.h"

#include "../lamix/interrupts/traps.h"
#include "../lamix/sys/userstat.h"
#include "../lamix/lib_src/hostent.h"

#ifndef _ST_FSTYPSZ
#  define _ST_FSTYPSZ 16
#endif

#ifndef _SOCKLEN_T
#define _SOCKLEN_T
typedef unsigned int socklen_t;
#endif

static void UserStatAllocHandler  (instance *, ProcState *);
static void UserStatSampleHandler (instance *, ProcState *);
static void WritelogHandler       (instance *, ProcState *);

static void DCreatHandler         (instance *, ProcState *);
static void DOpenHandler          (instance *, ProcState *);
static void PRead64Handler        (instance *, ProcState *);
static void PWrite64Handler       (instance *, ProcState *);
static void Lseek64Handler        (instance *, ProcState *);
static void ReadlinkHandler       (instance *, ProcState *);
static void CloseHandler          (instance *, ProcState *);
static void DUnlinkHandler        (instance *, ProcState *);
static void DAccessHandler        (instance *, ProcState *);
static void IoctlHandler          (instance *, ProcState *);
static void FcntlHandler          (instance *, ProcState *);
static void Fstat64Handler        (instance *, ProcState *);
static void DFStat64Handler       (instance *, ProcState *);
static void Lstat64Handler        (instance *, ProcState *);
static void Fstatvfs64Handler     (instance *, ProcState *);
static void ChmodHandler          (instance *, ProcState *);
static void FchmodHandler         (instance *, ProcState *);
static void ChownHandler          (instance *, ProcState *);
static void FchownHandler         (instance *, ProcState *);
static void LchownHandler         (instance *, ProcState *);
static void RenameHandler         (instance *, ProcState *);
static void UtimeHandler          (instance *, ProcState *);

static void DMkdirHandler         (instance *, ProcState *);
static void DRmdirHandler         (instance *, ProcState *);
static void Getdents64Handler     (instance *, ProcState *);

static void LinkHandler           (instance *, ProcState *);
static void SymlinkHandler        (instance *, ProcState *);

static void SocketHandler         (instance *, ProcState *);
static void BindHandler           (instance *, ProcState *);
static void ListenHandler         (instance *, ProcState *);
static void AcceptHandler         (instance *, ProcState *);
static void ConnectHandler        (instance *, ProcState *);
static void GetSockOptHandler     (instance *, ProcState *);
static void SetSockOptHandler     (instance *, ProcState *);
static void ShutdownHandler       (instance *, ProcState *);
static void CloseSocketHandler    (instance *, ProcState *);
static void GetSockNameHandler    (instance *, ProcState *);
static void GetPeerNameHandler    (instance *, ProcState *);
static void SendMsgHandler        (instance *, ProcState *);
static void RecvMsgHandler        (instance *, ProcState *);
static void GetHostByNameHandler  (instance *, ProcState *);
static void GetHostByAddrHandler  (instance *, ProcState *);

static void SysInfoHandler        (instance *, ProcState *);
static void PathConfHandler       (instance *, ProcState *);
static void GetUIDHandler         (instance *, ProcState *);
static void GetGIDHandler         (instance *, ProcState *);
static void GetgroupsHandler      (instance *, ProcState *);
static void GetStdioHandler       (instance *, ProcState *);

static void GetSegmentInfoHandler (instance *, ProcState *);
 
 
 
extern char fnstdin[MAXPATHLEN], fnstdout[MAXPATHLEN], fnstderr[MAXPATHLEN];
extern char fnsimmount[MAXPATHLEN], fncwd[MAXPATHLEN];

#define NET_MSG_DELAY 30       // wait N seconds before printing message
                               // that simulation is blocked on INET socket




/**************************************************************************/
/* SimTrapHandle : Handle special operating system and RSIM traps         */
/**************************************************************************/

int SimTrapHandle(instance *inst, ProcState *proc)
{
  int type, pr;
  char *phys_mem;
  ProcState *np;
  unsigned addr;
  
  // trap type is in %g1 - register 1
  // all other arguments are in %o0 - %o5
  type = proc->phy_int_reg_file[proc->intmapper[arch_to_log(proc,
							   proc->cwp,
								   1)]];
#ifdef COREFILE
  if (YS__Simtime > DEBUG_TIME)
    fprintf(corefile,
            "traps.cc: In SysTrapHandler with code %d\n",
            type);
#endif

  if (type >= SIM_TRAP_GET_SEGMENT_INFO)
    {
      if (!PSTATE_GET_PRIV(proc->pstate))
        {
          inst->exception_code = PRIVILEGED;
          return(0);
        }
    }

 
  //=========================================================================
  switch (type)
    {
    case SIM_TRAP_EXIT:                                // exit
      pr = proc->intmapper[arch_to_log(proc, proc->cwp, 8)];
 
      YS__logmsg(proc->proc_id / ARCH_cpus,
		 "Processor %d exiting with code %d\n",
		 proc->proc_id,
		 proc->phy_int_reg_file[pr]);
      proc->exit = proc->phy_int_reg_file[pr] ?
        (proc->phy_int_reg_file[pr] - 128) :
          1;
      break;


      //---------------------------------------------------------------------
    case SIM_TRAP_NEWPHASE:               // newphase
      proc->newphase(inst->rs1vali);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_ENDPHASE:               // endphase
      proc->endphase(proc->proc_id / ARCH_cpus);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_HALT:                  // fullstop -- force everyone to exit!
      pr = proc->intmapper[arch_to_log(proc, proc->cwp, 8)];
 
      YS__logmsg(proc->proc_id / ARCH_cpus,
		 "Processor %d forcing halt with code %d\n",
		 proc->proc_id,
		 proc->phy_int_reg_file[pr]);
      exit(1);     // abort all processors immediately, without graceful exit
 
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_RSIM_OFF:              // RSIM OFF
      proc->decode_rate = 1;
      proc->graduate_rate = 1;
      proc->max_active_list = 2;
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_RSIM_ON:               // RSIM ON
      proc->decode_rate = DECODES_PER_CYCLE;
      proc->graduate_rate = GRADUATES_PER_CYCLE;
      proc->max_active_list = MAX_ACTIVE_NUMBER;
      break;
 
      
      //=====================================================================

    case SIM_TRAP_CLEAR_STAT:            // clear stats
      StatClear(proc->proc_id / ARCH_cpus);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_REPORT_STAT:           // report stats
      StatReport(proc->proc_id / ARCH_cpus);
      break;


      //---------------------------------------------------------------------
    case SIM_TRAP_USERSTAT_ALLOC:
      UserStatAllocHandler(inst, proc);
      break;


      //---------------------------------------------------------------------
    case SIM_TRAP_USERSTAT_SAMPLE:
      UserStatSampleHandler(inst, proc);
      break;

      
    case SIM_TRAP_LOG_SIMTIME:
      YS__logmsg(proc->proc_id / ARCH_cpus, "Current simtime: %.0f\n",
		 YS__Simtime);
      break;


    case SIM_TRAP_INVOKE_DEBUGGER:
      fprintf(stderr, "Hit INVOKE_DEBUGGER trap at simtime: %.0f\n",
	      YS__Simtime); 
      YS__logmsg(proc->proc_id / ARCH_cpus,
		 "Hit INVOKE_DEBUGGER trap at simtime: %.0f\n",
		 YS__Simtime); 
#ifdef DEBUG_PROC
      invoke_debugger(realsimpath);
#else
      fprintf(stderr, "This trap can only be used with the debugging version"
	      " of mlrsim\n");
      YS__logmsg(proc->proc_id / ARCH_cpus,
		 "This trap can only be used with the debugging version"
		 "of mlrsim\n");
#endif
      break;


      //=====================================================================
      
      //---------------------------------------------------------------------
    case SIM_TRAP_GET_SEGMENT_INFO:         // get segment start/end address
      GetSegmentInfoHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_ALLOC_PAGE:               // allocate physical memory
      pr = proc->intmapper[arch_to_log(proc, proc->cwp, 8)];
      addr = (unsigned)proc->phy_int_reg_file[pr];

      phys_mem = proc->PageTable->lookup(addr);
      if (!phys_mem)
	{
#ifdef TRACE
	  if (YS__Simtime > TRACE)
	    YS__logmsg(proc->proc_id / ARCH_cpus,
		       "%.0f: Installing Mapping: %08X\n",
		       YS__Simtime, addr);
#endif
          phys_mem = (char*)malloc(PAGE_SIZE);
	  if (phys_mem == NULL)
	    YS__errmsg(proc->proc_id / ARCH_cpus,
		       "SimAllocPage: Malloc failed: %s\n",
		       YS__strerror(errno));
	  memset(phys_mem, 0, PAGE_SIZE);
	  proc->PageTable->insert(addr, phys_mem);
        }
#ifdef TRACE
      else
	if (YS__Simtime > TRACE)
	  YS__logmsg(proc->proc_id / ARCH_cpus,
		     "Installing Mapping: %08X - exists!\n",
		     addr);
#endif
      break;
      
 
      //=====================================================================
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_WRITELOG:              // write simulator log
      WritelogHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_DCREAT:                // creat system call
      DCreatHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_DOPEN:                 // open system call
      DOpenHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_PREAD64:               // pread system call
      PRead64Handler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_PWRITE64:              // pwrite system call
      PWrite64Handler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_LSEEK64:               // lseek system call
      Lseek64Handler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_READLINK:              // readlink system call
      ReadlinkHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_CLOSE:                 // close system call
      CloseHandler(inst, proc);
      break;
 

      //---------------------------------------------------------------------
    case SIM_TRAP_DUNLINK:               // unlink system call
      DUnlinkHandler(inst, proc);
      break;
 

      //---------------------------------------------------------------------
    case SIM_TRAP_DACCESS:               // access system call
      DAccessHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_IOCTL:                 // ioctl system call
      IoctlHandler(inst, proc);
      break;
 
      
      //---------------------------------------------------------------------
    case SIM_TRAP_FCNTL:                 // fcntl system call
      FcntlHandler(inst, proc);
      break;