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/* toplevel.c -- Top level simulator source file
   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
 
This file is part of OpenRISC 1000 Architectural Simulator.
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
 
/* Simulator commands. Help and version output. SIGINT processing.
Stdout redirection is specific to linux (I need to fix this). */
 
#include "config.h"
 
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <stdarg.h>
#include <fcntl.h>
#include <limits.h>
 
#ifdef HAVE_LIBREADLINE
#include <readline/readline.h>
#include <readline/history.h>
#endif /* HAVE_LIBREADLINE */
 
#include "arch.h"
#include "parse.h"
#include "abstract.h"
#include "labels.h"
#include "execute.h"
#include "sim-config.h"
#include "spr_defs.h"
#include "sprs.h"
#include "dma.h"
#include "vga.h"
#include "fb.h"
#include "ps2kbd.h"
#include "vapi.h"
#include "gdbcomm.h"
#include "debug_unit.h"
#include "coff.h"
#include "sched.h"
#include "profiler.h"
#include "mprofiler.h"
#include "mc.h"
#include "atahost.h"
 
/* CVS revision number. */
const char rcsrev[] = "$Revision: 1.91 $";
 
/* History of execution */
int histexec[HISTEXEC_LEN];
 
char *sim_commands [] = {
  "q", "t", "help", "de", "dm", "run", "pr", "pm", "pc",
  "reset", "break", "hist", "stats", "stall" "info",
  "r", "dv",
#if !FAST_SIM
  "set",
#endif
 
};
 
inline void debug(int level, const char *format, ...)
{
  char *p;
  va_list ap;
 
  if (config.sim.debug >= level) {
    if ((p = malloc(1000)) == NULL)
      return;
    va_start(ap, format);
    (void) vsnprintf(p, 1000, format, ap);
    va_end(ap);
    PRINTF("%s", p);
    fflush(stdout);
    free(p);
  } else {
#if DEBUG
  if ((p = malloc(1000)) == NULL)
    return;
  va_start(ap, format);
  (void) vsnprintf(p, 1000, format, ap);
  va_end(ap);
  PRINTF("%s\n", p);
  fflush(stdout);
  free(p);
#endif
  }
}
 
void ctrl_c(signum)
     int signum;
{
  runtime.sim.cont_run = runtime.cpu.stalled ? 0 : 1;
  runtime.sim.iprompt = 1;
  set_stall_state (0);
  signal(SIGINT, ctrl_c);
}
 
void version()
{
  PRINTF ("\n");
  PRINTF ("OpenRISC 1000 (OR32) Architectural Simulator, %s\n", rcsrev);
  PRINTF ("Copyright (C) 1999 Damjan Lampret, lampret@opencores.org\n");
  PRINTF ("Copyright (C) 2000 Damjan Lampret, lampret@opencores.org\n");
  PRINTF ("                   Jimmy Chen-Min Chen, jimmy@ee.nctu.edu.tw\n");
  PRINTF ("                   Johan Rydberg, johan.rydberg@insight.se\n");
  PRINTF ("                   Marko Mlinar, markom@opencores.org\n");
  PRINTF ("Copyright (C) 2001 Simon Srot, simons@opencores.org\n");
  PRINTF ("                   Marko Mlinar, markom@opencores.org\n");
  PRINTF ("Copyright (C) 2002 Marko Mlinar, markom@opencores.org\n");
  PRINTF ("                   Simon Srot, simons@opencores.org\n");
  PRINTF ("Visit http://www.opencores.org for more information about ");
  PRINTF ("OpenRISC 1000 and\nother open source cores.\n\n");
  PRINTF ("This software comes with ABSOLUTELY NO WARRANTY; for ");
  PRINTF ("details see COPYING.\nThis is free software, and you ");
  PRINTF ("are welcome to redistribute it under certain\nconditions; ");
  PRINTF ("for details see COPYING.\n");
}
 
void
help()
{
  PRINTF("q      - quit simulator\n");
  PRINTF("r      - display all registers\n");
  PRINTF("t      - execute next instruction\n");
  PRINTF("run <instructions> [<hush>]  - execute <instruction> instructions, no reg dump if hush\n");
  PRINTF("pr <r> <value>     - patch register <r> with <value>\n");
  PRINTF("dm <fromaddr> [<toaddr>] - display memory from <fromaddr> to <toaddr>\n");
  PRINTF("de <fromaddr> [<toaddr>] - debug insn memory\n");
  PRINTF("pm <addr> <value>  - patch memory location <addr> with <value>\n");
  PRINTF("pc <value>     - patch PC register with <value>\n");
  PRINTF("break <addr>     - toggle breakpoint at address <addr>\n");
  PRINTF("reset      - simulator reset\n");
  PRINTF("hist       - execution history\n");
  PRINTF("stall                    - stalls the processor and gives control to the debugger\n");
  PRINTF("stats <num|clear>    - execution statistics num or clear it.\n");
  PRINTF("info       - configuration info (caches etc.)\n");
  PRINTF("dv <fromaddr> [<toaddr>] [<modname>] - dumps memory as verilog (use redirect)\n");
  PRINTF("dh <fromaddr> [<toaddr>] - dumps memory as hex code (use redirect)\n");
  PRINTF("<cmd> > <filename>   - redirect simulator stdout to <filename> (and not emulated PRINTF)\n");
#if !FAST_SIM
  PRINTF("set <section> <item> = <param>  - set configuration.  See sim.cfg for more information.\n");
  PRINTF("debug      - toggles simulator debug mode\n");
  mp_help ();
  prof_help ();
  PRINTF("cuc        - enters Custom Unit Compiler command prompt\n");
#endif
  PRINTF("help       - available commands (this list)\n");
}
 
void debugmem (unsigned long from, unsigned long to );
 
/* Resets all subunits */
void sim_reset ()
{
  SCHED_INIT();
  uart_reset();
  dma_reset();
  eth_reset();
  gpio_reset();
  vga_reset ();
  fb_reset ();
  kbd_reset ();
  ata_reset();
  tick_reset();
  pm_reset();
  pic_reset();
  mc_reset();
  du_reset ();
  cpu_reset();
}
 
/* Initalizes all devices and sim */
void sim_init ()
{
  init_memory_table ();
  init_labels();
  init_breakpoints();
  initstats();
  build_automata();
 
  if (config.sim.profile) {
    runtime.sim.fprof = fopen(config.sim.prof_fn, "wt+");
    if(!runtime.sim.fprof) {
      fprintf(stderr, "ERROR: Problems opening profile file.\n");
      exit (1);
    } else
      fprintf(runtime.sim.fprof, "+00000000 FFFFFFFF FFFFFFFF [outside_functions]\n");
  }
 
  if (config.sim.mprofile) {
    runtime.sim.fmprof = fopen(config.sim.mprof_fn, "wb+");
    if(!runtime.sim.fmprof) {
      fprintf(stderr, "ERROR: Problems opening memory profile file.\n");
      exit (1);
    }
  }
 
  if (config.sim.exe_log) {
    runtime.sim.fexe_log = fopen(config.sim.exe_log_fn, "wt+");
    if(!runtime.sim.fexe_log) {
      PRINTF("ERROR: Problems opening exe_log file.\n");
      exit (1);
    }
  }
 
  if (config.sim.spr_log) {
    PRINTF("OPENING SPRLOG\n");
    runtime.sim.fspr_log = fopen(config.sim.spr_log_fn, "wt+");
    if (!runtime.sim.fspr_log) {
      PRINTF("ERROR: Problems opening spr_log file.\n");
      exit(1);
    }
  }
 
  /* Initialize memory */
  {
    extern struct dev_memarea *dev_list;
    struct dev_memarea *area;
    int i;
    if (config.memory.type == MT_RANDOM) {
      unsigned int val = 0;
 
      if (config.memory.random_seed == -1) {
        runtime.memory.random_seed = time(NULL);
        /* Print out the seed just in case we ever need to debug */
        PRINTF("Seeding random generator with value %d\n", config.memory.random_seed);
      } else
        runtime.memory.random_seed = config.memory.random_seed;
      srandom(runtime.memory.random_seed);
 
      for (area = dev_list; area; area = area->next)
        for(i = 0; i < area->size; i++) {
          val = random();
          setsim_mem8(i + area->addr_compare, val & 0xFF);
        }
    } else if(config.memory.type == MT_PATTERN) {
      for (area = dev_list; area; area = area->next)
        for(i = 0; i < area->size; i++)
          setsim_mem8(i + area->addr_compare, config.memory.pattern);
    } else if (config.memory.type != MT_UNKNOWN) {
      fprintf(stderr, "Invalid memory configuration type.\n");
      exit(1);
    }
  }
 
  if(runtime.sim.filename) {
    unsigned long endaddr = 0xFFFFFFFF;
    endaddr = loadcode(runtime.sim.filename, 0, 0); /* MM170901 always load at address zero.  */
    if (endaddr == -1) {
      fprintf(stderr, "Problems loading boot code.\n");
      exit(1);
    }
  }
 
#if !FAST_SIM /* We assume we have valid configuration with fsim*/
  /* Disable gdb debugging, if debug module is not available.  */
  if (config.debug.gdb_enabled && !config.debug.enabled) {
    config.debug.gdb_enabled = 0;
    if (config.sim.verbose)
      fprintf (stderr, "WARNING: Debug module not enabled, cannot start gdb.\n");
  }
#endif
 
  if (config.debug.gdb_enabled)
    gdbcomm_init ();
 
#if !FAST_SIM /* We assume we have valid configuration with fsim*/
  /* Enable dependency stats, if we want to do history analisis */
  if (config.sim.history && !config.cpu.dependstats) {
    config.cpu.dependstats = 1;
    if (config.sim.verbose)
      fprintf (stderr, "WARNING: dependstats stats must be enabled to do history analisis.\n");
  }
#endif
 
#if !FAST_SIM /* We assume we have valid configuration with fsim*/  
  /* Debug forces verbose */
  if (config.sim.debug && !config.sim.verbose) {
    config.sim.verbose = 1;
    fprintf (stderr, "WARNING: verbose turned on.\n");
  }
#endif
 
  /* Start VAPI before device initialization.  */
  if (config.vapi.enabled) {
    runtime.vapi.enabled = 1;
    vapi_init ();
    if (config.sim.verbose)
      PRINTF ("VAPI started, waiting for clients.\n");
  }
 
  sim_reset ();
 
  lock_memory_table ();
 
  /* Wait till all test are connected.  */
  if (runtime.vapi.enabled) {
    int numu = vapi_num_unconnected (0);
    if (numu) {
      PRINTF ("\nWaiting for VAPI tests with ids:\n");
      vapi_num_unconnected (1);
      PRINTF ("\n");
      while (numu = vapi_num_unconnected (0)) {
        vapi_check ();
        PRINTF ("\rStill waiting for %i VAPI test(s) to connect.       ", numu);
        usleep (100);
      }
      PRINTF ("\n");
    }
    PRINTF ("All devices connected                         \n");
  }
  /* simulator is initialized */
  runtime.sim.init = 0;
}
 
/* Display info about various modules */
void sim_info () {
  sprs_status();
  PRINTF ("\n");
  memory_table_status ();
  if (config.immu.enabled) itlb_status(-1);
  if (config.dmmu.enabled) dtlb_status(-1);
  if (config.ic.enabled) ic_info();
  if (config.dc.enabled) dc_info();
 
  if (config.bpb.enabled) bpb_info();
  if (config.bpb.btic) btic_info();
 
  if (config.mc.enabled) mc_status();
  if (config.nuarts) uart_status();
  if (config.ndmas) dma_status();
  if (config.nethernets) eth_status();
  if (config.ngpios) gpio_status();
  if (config.natas) ata_status();
  kbd_info();
}
 
/* Cleanup */
void sim_done ()
{
  if (config.sim.profile) {
    fprintf(runtime.sim.fprof,"-%08X FFFFFFFF\n", runtime.sim.cycles);
    fclose(runtime.sim.fprof);
  }
 
  if (config.sim.mprofile) fclose(runtime.sim.fmprof);
  if (config.sim.exe_log)   fclose(runtime.sim.fexe_log);
  if (runtime.vapi.enabled)  vapi_done ();
  done_memory_table ();
  exit(0);
}
 
/* Executes jobs in time queue */
static inline void do_scheduler ()
{
  void (*func)(int);
  int param;
 
  /* Execute all jobs till now */
  do {
    func = SCHED_PEEK().func;
    param = SCHED_PEEK().param;
    SCHED_REMOVE();
    func (param);
  } while (runtime.sim.cycles >= SCHED_PEEK().time);
}
 
/* Main function */
int main(argc, argv)
     int argc;
     char *argv[];
{
  char *linestr;
  char item1[500], b2[500], prev_str[500] = "";
  char *redirstr;
  int hush = 0;
  int first_prompt = 1;
 
  srand(getpid());
  init_defconfig();
  if (parse_args(argc, argv)) {
    PRINTF("Usage: %s [options] <filename>\n", argv[0]);
    PRINTF("Options:\n");
    PRINTF(" -v                   version and copyright note\n");
    PRINTF(" -i                   enable interactive command prompt\n");
    PRINTF(" --nosrv              do not launch JTAG proxy server\n"); /* (CZ) */
    PRINTF(" --srv <n>            launch JTAG proxy server on port <n>; [random]\n"); /* (CZ) */
#if !FAST_SIM
    PRINTF(" -f or --file         load script file [sim.cfg]\n");
    PRINTF(" --enable-profile     enable profiling.\n");
    PRINTF(" --enable-mprofile    enable memory profiling.\n");
#endif
    PRINTF(" --output-cfg         prints C structure of current\n");
    PRINTF("                      configuration to standard output\n");
    PRINTF("\nor   : %s ", argv[0]);
    mp_help ();
    PRINTF("\nor   : %s ", argv[0]);
    prof_help ();
    exit(-1);
  }
 
#ifdef HAVE_LIBREADLINE
  initialize_readline (); /* Bind our completer. */
#endif
 
#if !FAST_SIM
  /* Read configuration file.  */
  if (!runtime.sim.script_file_specified)
    read_script_file ("sim.cfg");
 
  /* Overide parameters with command line ones */
  if (runtime.simcmd.profile) config.sim.profile = 1;
  if (runtime.simcmd.mprofile) config.sim.mprofile = 1;
 
  if (!runtime.sim.script_file_specified && config.sim.verbose)
    fprintf (stderr, "WARNING: No config file read, assuming default configuration.\n");
#else
  PRINTF ("\n\tNOTE: running fast sim with fixed configuration!\n\n");
#endif
  if (runtime.sim.output_cfg) {
    output_cfg (stdout);
    exit (0);
  }
  print_config();
  sim_init ();
  signal(SIGINT, ctrl_c);
 
  while(1) {
    if (runtime.sim.iprompt) {
      if (config.debug.gdb_enabled)
        {
          PRINTF ("(sim) ");
          fflush(stdout);
          HandleServerSocket(true);  /* block & check_stdin = true */
        }
#ifdef HAVE_LIBREADLINE
      /* Must disable readline in new mode. It isn't compatible
         with non blocking environments */
      if(!config.debug.gdb_enabled)
        linestr = readline("(sim) ");
      else
        linestr = fgets(b2, sizeof b2, stdin);
#else
      if(!config.debug.gdb_enabled)
        PRINTF ("(sim) ");
      linestr = fgets(b2, sizeof b2, stdin);
#endif
    } else
      strcpy(linestr = b2, "run -1 hush");
 
    if (!linestr)
      break;
    linestr = stripwhite (linestr);
 
#ifdef HAVE_LIBREADLINE
    /* Readline only works in the old mode */
    if(!server_fd)
      {
        if (strlen(linestr) == 0) {
          char *l = repeat_last_command ();
 
          if (l) {
      free (linestr);
      linestr = l;
          }
        }
 
        if (*linestr) {
          add_history (linestr);
        }
      }
#endif /* HAVE_LIBREADLINE */
 
    if (redirstr = strstr(linestr, ">")) {
      *redirstr = '\0';
      strtoken(&redirstr[1], item1, 1);
      runtime.sim.fout = fopen(item1, "w+");
      if (!runtime.sim.fout) runtime.sim.fout = stdout;
    }
 
    if (linestr[0] == '\n')
      strcpy (linestr, &prev_str[0]);
    else
      strcpy (&prev_str[0], linestr);
 
    strtoken(linestr, item1, 1);
    if (strcmp(item1, "q") == 0) {  /* quit */
      PRINTF ("\n");
      sim_done ();
    } else
    if (strcmp(item1, "help") == 0) /* help */
      help();
    else
    if (strcmp(item1, "t") == 0) {  /* trace */
      runtime.sim.cont_run = 1;
    } else
    if (strcmp(item1, "dm") == 0) { /* dump memory */
      char item2[20];
      char item3[20];
      static int from = 0, to = 0;
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
 
      if (strlen(item2)) {
        if (item2[0] == '_')
          from = eval_label(item2);
        else
          from = strtoul(item2, NULL, 0);
        to = from + 0x40;
      }
      if (strlen(item3))
        to = strtoul(item3, NULL, 0);
      dumpmemory(from, to, 0, 1);
            PRINTF("\n");
    } else
    if (strcmp(item1, "dv") == 0) {/* dump memory as verilog*/
      char item2[20];
      char item3[20];
      char item4[20];
      static int from = 0, to = 0;
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
      strtoken(linestr, item4, 4);
 
      if (strlen(item2)) {
        if (item2[0] == '_')
          from = eval_label(item2);
        else
          from = strtoul(item2, NULL, 0);
        to = from + 0x40;
      }
      if (strlen(item3))
        to = strtoul(item3, NULL, 0);
      if (!strlen(item4))
        strcpy(item4, "or1k_mem");
      dumpverilog(item4, from, to);
        PRINTF("\n");
    } else
    if (strcmp(item1, "dh") == 0) {/* dump memory as hex*/
      char item2[20];
      char item3[20];
      static int from = 0, to = 0;
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
 
      if (strlen(item2)) {
        if (item2[0] == '_')
          from = eval_label(item2);
        else
          from = strtoul(item2, NULL, 0);
        to = from + 0x40;
      }
      if (strlen(item3))
        to = strtoul(item3, NULL, 0);
      dumphex(from, to);
        PRINTF("\n");
    } else
    if (strcmp(item1, "pm") == 0) { /* patch memory */
      char item2[20];
      char item3[20];
      static int addr = 0;
      int breakpoint = 0;
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
      if (strlen(item2))
        if (item2[0] == '_')
          addr = eval_label(item2);
        else
          addr = strtoul(item2, NULL, 0);
      set_mem32(addr, strtoul(item3, NULL, 0), &breakpoint);
    } else
    if (strcmp(item1, "pr") == 0) { /* patch regs */
      char item2[20];
      char item3[20];
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
      setsim_reg32(strtoul(item2, NULL,0), strtoul(item3, NULL, 0));
    } else
    if (strcmp(item1, "pc") == 0) { /* patch PC */
      char item2[20];
 
      strtoken(linestr, item2, 2);
      pc = strtoul(item2, NULL, 0);
    } else
    if (strcmp(item1, "break") == 0) {  /* set/clear breakpoint */
      char item2[20];
 
      strtoken(linestr, item2, 2);
      set_insnbrkpoint(strtoul(item2, NULL, 0));
    } else
    if (strcmp(item1, "r") == 0) {  /* dump regs */
      dumpreg();
    } else
    if (strcmp(item1, "de") == 0) { /* reset simulator */
      char item2[20];
      char item3[20];
      static int from = 0, to = 0;
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
 
      if (strlen(item2)) {
        if (item2[0] == '_')
          from = eval_label(item2);
        else
          from = strtoul(item2, NULL, 0);
        to = from + 0x40;
      }
      if (strlen(item3))
        to = strtoul(item3, NULL, 0);
      debugmem(from, to);
      PRINTF("\n");
    } else
    if (strcmp(item1, "reset") == 0) {  /* reset simulator */
      sim_reset();
    } else
#if !FAST_SIM
    if (strcmp(item1, "debug") == 0) {  /* debug mode */
      config.sim.debug ^= 1;
    } else
#endif
    if (strcmp(item1, "hist") == 0) { /* dump history */
      int i;
      for(i = HISTEXEC_LEN; i; i--)
        dumpmemory(histexec[i - 1], histexec[i - 1] + 4, 1, 1);
      PRINTF("\n");
    } else
    if (strcmp(item1, "run") == 0) { /* run */
      char item2[20];
      char item3[20];
 
      strtoken(linestr, item2, 2);
      strtoken(linestr, item3, 3);
      if (strcmp(item3, "hush") == 0)
        hush = 1;
      else
        hush = 0;
      runtime.sim.cont_run = strtol(item2, NULL, 0);
    } else
    if(!strcmp(item1, "stall")) { /* Added by CZ 210801 */
      set_stall_state (1);
      runtime.sim.iprompt = 0;
      runtime.sim.cont_run = -1;
      hush = 1;
    } else
    if (strcmp(item1, "stats") == 0) { /* stats */
      char item2[20];
      int i = 0;
 
      strtoken(linestr, item2, 2);
      if (strcmp(item2, "clear") == 0) {
        initstats();
        PRINTF("Cleared.\n");
      } else {
        i = strtoul(item2, NULL, 0);
        printstats(i);
      }
    } else
    if (strcmp(item1, "info") == 0) /* configuration info */
      sim_info ();
    else
#if !FAST_SIM
    if (strcmp (item1, "profiler") == 0) { /* run profiler utility */
      char *argv[10];
      int argc = tokenize_line (linestr, argv, 10);
      main_profiler (argc, argv);
    } else
    if (strcmp (item1, "mprofiler") == 0) { /* run mprofiler utility */
      char *argv[10];
      int argc = tokenize_line (linestr, argv, 10);
      main_mprofiler (argc, argv);
    } else
    if (strcmp (item1, "cuc") == 0) { /* run Custom Unit Compiler */
      main_cuc (runtime.sim.filename);
    } else
    if (strcmp(item1, "set") == 0) { /* configuration info */
      char *s = linestr;
      int i;
      extern section;
      extern struct section sections[];
      while (*s != ' ' && *s) s++;
      set_config_command (s);
    } else
#endif /* !FAST_SIM */
      PRINTF("%s: Unknown command.\n", linestr);
 
    { /* Needed by execution */
      extern int do_stats;
      do_stats = config.cpu.dependstats || config.cpu.superscalar || config.cpu.dependstats
              || config.sim.history || config.sim.exe_log;
    }
 
    /* MM: 'run -1' means endless execution.  */
    while(runtime.sim.cont_run) {
      IFF (config.debug.enabled) {
        if (runtime.cpu.stalled) {
          if(config.debug.gdb_enabled) {
            BlockJTAG();
            HandleServerSocket(false);
          } else {
            fprintf (stderr, "WARNING: CPU stalled and gdb connection not enabled.");
            runtime.sim.cont_run = 0;
          }
          continue;
        }
      }
 
      /* Each cycle has counter of mem_cycles; this value is joined with cycles
         at the end of the cycle; no sim originated memory accesses should be
         performed inbetween. */
      runtime.sim.mem_cycles = 0;
      if (!config.pm.enabled || !testsprbits(SPR_PMR, SPR_PMR_DME | SPR_PMR_SME)) {
        if (runtime.sim.cont_run > 0) runtime.sim.cont_run--;
        pic_clock ();
        if (cpu_clock ()) break;
        if (config.dc.enabled) dc_clock();
        if (config.ic.enabled) ic_clock();
      }
 
      if (config.dmas) dma_clock();
      if (config.ethernets) eth_clock();
      if (config.ngpios) gpio_clock();
      if (config.vapi.enabled && runtime.vapi.enabled) vapi_check();
      if (config.debug.gdb_enabled) HandleServerSocket(false); /* block & check_stdin = false */
      IFF(config.debug.enabled)
        if (testsprbits(SPR_DMR1, SPR_DMR1_ST)) set_stall_state (1);
 
      runtime.sim.cycles += runtime.sim.mem_cycles;
      if (runtime.sim.cycles >= SCHED_PEEK().time) do_scheduler ();
      if (!hush) dumpreg();
    }
    hush = 0;
    fflush(stdout);
    runtime.sim.fout = stdout;
 
    if (!runtime.sim.iprompt)  /* non-interactive quit */
      sim_done();
 
#ifdef HAVE_LIBREADLINE
    if (linestr)
      free (linestr);
#endif
 
  }
  sim_done();
}
 
#ifdef HAVE_LIBREADLINE
char *command_generator ();
char **sim_completion ();
 
/* Tell the GNU readline library how to complete.  We want to try to complete
   on command names if this is the first word in the line, or on filenames
   if not. */
void initialize_readline ()
{
  /* Allow conditional parsing of the ~/.inputrc file. */
  rl_readline_name = "or1ksim";
 
  /* Tell the completer that we want a crack first. */
  rl_attempted_completion_function = (CPPFunction *)sim_completion;
}
 
/* Attempt to complete on the contents of TEXT.  START and END bound the
   region of rl_line_buffer that contains the word to complete.  TEXT is
   the word to complete.  We can use the entire contents of rl_line_buffer
   in case we want to do some simple parsing.  Return the array of matches,
   or NULL if there aren't any. */
char **
sim_completion (text, start, end)
     char *text;
     int start, end;
{
  char **matches;
 
  matches = (char **)NULL;
 
  /* If this word is at the start of the line, then it is a command
     to complete.  Otherwise it is the name of a file in the current
     directory. */
  if (start == 0)
    matches = completion_matches (text, command_generator);
 
  return (matches);
}
 
/* Generator function for command completion.  STATE lets us know whether
   to start from scratch; without any state (i.e. STATE == 0), then we
   start at the top of the list. */
char *
command_generator (text, state)
     char *text;
     int state;
{
  static int list_index, len;
  char *name;
 
  /* If this is a new word to complete, initialize now.  This includes
     saving the length of TEXT for efficiency, and initializing the index
     variable to 0. */
  if (!state)
    {
      list_index = 0;
      len = strlen (text);
    }
 
  /* Return the next name which partially matches from the command list. */
  while (name = sim_commands[list_index])
    {
      list_index++;
 
      if (strncmp (name, text, len) == 0)
        return (dupstr(name));
    }
 
  /* If no names matched, then return NULL. */
  return ((char *)NULL);
}
 
/* Repeats the last command.  */
char *
repeat_last_command ()
{
  int offset = where_history ();
  HIST_ENTRY *hist;
 
  if (hist = history_get (offset))
    return dupstr (hist->line);
  return 0;
}
 
#endif
 
extern char *disassembled;
void debugmem( unsigned long from, unsigned long to )
{
  int i;
  PRINTF("starting to dump mem...\n");
  for(i=from; i<to; ) {
    struct label_entry *entry;
    unsigned int _insn;
    PRINTF("i=%x :: ", i);
 
    if (verify_memoryarea(i) && (entry = get_label(i)))
      PRINTF("label: %s |", entry->name);
 
    iqueue[0].insn = _insn = evalsim_mem32(i);
    iqueue[0].insn_index = insn_decode(_insn);
    disassemble_insn (_insn);
    PRINTF("%08x %s\n", _insn, disassembled);
    i += insn_len( iqueue[0].insn_index );
  }
}

Line No.	Rev	Author	Line
1	2	cvs	`/* toplevel.c -- Top level simulator source file`
2			`Copyright (C) 1999 Damjan Lampret, lampret@opencores.org`
3
4			`This file is part of OpenRISC 1000 Architectural Simulator.`
5
6			`This program is free software; you can redistribute it and/or modify`
7			`it under the terms of the GNU General Public License as published by`
8			`the Free Software Foundation; either version 2 of the License, or`
9			`(at your option) any later version.`
10
11			`This program is distributed in the hope that it will be useful,`
12			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
13			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
14			`GNU General Public License for more details.`
15
16			`You should have received a copy of the GNU General Public License`
17			`along with this program; if not, write to the Free Software`
18			`Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */`
19
20			`/* Simulator commands. Help and version output. SIGINT processing.`
21			`Stdout redirection is specific to linux (I need to fix this). */`
22
23	16	jrydberg	`#include "config.h"`
24
25	2	cvs	`#include <stdio.h>`
26			`#include <ctype.h>`
27			`#include <string.h>`
28			`#include <stdlib.h>`
29	46	lampret	`#include <unistd.h>`
30	2	cvs	`#include <signal.h>`
31			`#include <stdarg.h>`
32	123	markom	`#include <fcntl.h>`
33	728	markom	`#include <limits.h>`
34	2	cvs
35	16	jrydberg	`#ifdef HAVE_LIBREADLINE`
36	7	jrydberg	`#include <readline/readline.h>`
37			`#include <readline/history.h>`
38	16	jrydberg	`#endif /* HAVE_LIBREADLINE */`
39	7	jrydberg
40	2	cvs	`#include "arch.h"`
41			`#include "parse.h"`
42			`#include "abstract.h"`
43	261	markom	`#include "labels.h"`
44	2	cvs	`#include "execute.h"`
45	69	lampret	`#include "sim-config.h"`
46	103	lampret	`#include "spr_defs.h"`
47	518	markom	`#include "sprs.h"`
48	212	erez	`#include "dma.h"`
49	645	markom	`#include "vga.h"`
50			`#include "fb.h"`
51	664	markom	`#include "ps2kbd.h"`
52	304	markom	`#include "vapi.h"`
53	479	markom	`#include "gdbcomm.h"`
54			`#include "debug_unit.h"`
55	28	lampret	`#include "coff.h"`
56	728	markom	`#include "sched.h"`
57	632	ivang	`#include "profiler.h"`
58			`#include "mprofiler.h"`
59	741	ivang	`#include "mc.h"`
60	876	rherveille	`#include "atahost.h"`
61	632	ivang
62	2	cvs	`/* CVS revision number. */`
63	997	markom	`const char rcsrev[] = "$Revision: 1.91 $";`
64	2	cvs
65			`/* History of execution */`
66			`int histexec[HISTEXEC_LEN];`
67
68	7	jrydberg	`char *sim_commands [] = {`
69	361	markom	`"q", "t", "help", "de", "dm", "run", "pr", "pm", "pc",`
70			`"reset", "break", "hist", "stats", "stall" "info",`
71	551	markom	`"r", "dv",`
72			`#if !FAST_SIM`
73			`"set",`
74			`#endif`
75
76	7	jrydberg	`};`
77
78	344	markom	`inline void debug(int level, const char *format, ...)`
79	2	cvs	`{`
80	7	jrydberg	`char *p;`
81			`va_list ap;`
82	2	cvs
83	344	markom	`if (config.sim.debug >= level) {`
84	69	lampret	`if ((p = malloc(1000)) == NULL)`
85			`return;`
86			`va_start(ap, format);`
87			`(void) vsnprintf(p, 1000, format, ap);`
88			`va_end(ap);`
89	997	markom	`PRINTF("%s", p);`
90	69	lampret	`fflush(stdout);`
91			`free(p);`
92			`} else {`
93			`#if DEBUG`
94	7	jrydberg	`if ((p = malloc(1000)) == NULL)`
95			`return;`
96			`va_start(ap, format);`
97			`(void) vsnprintf(p, 1000, format, ap);`
98			`va_end(ap);`
99	997	markom	`PRINTF("%s\n", p);`
100	7	jrydberg	`fflush(stdout);`
101			`free(p);`
102	2	cvs	`#endif`
103	69	lampret	`}`
104	2	cvs	`}`
105
106	304	markom	`void ctrl_c(signum)`
107	7	jrydberg	`int signum;`
108	2	cvs	`{`
109	884	markom	`runtime.sim.cont_run = runtime.cpu.stalled ? 0 : 1;`
110	551	markom	`runtime.sim.iprompt = 1;`
111	479	markom	`set_stall_state (0);`
112	7	jrydberg	`signal(SIGINT, ctrl_c);`
113	2	cvs	`}`
114
115	304	markom	`void version()`
116	2	cvs	`{`
117	997	markom	`PRINTF ("\n");`
118			`PRINTF ("OpenRISC 1000 (OR32) Architectural Simulator, %s\n", rcsrev);`
119			`PRINTF ("Copyright (C) 1999 Damjan Lampret, lampret@opencores.org\n");`
120			`PRINTF ("Copyright (C) 2000 Damjan Lampret, lampret@opencores.org\n");`
121			`PRINTF (" Jimmy Chen-Min Chen, jimmy@ee.nctu.edu.tw\n");`
122			`PRINTF (" Johan Rydberg, johan.rydberg@insight.se\n");`
123			`PRINTF (" Marko Mlinar, markom@opencores.org\n");`
124			`PRINTF ("Copyright (C) 2001 Simon Srot, simons@opencores.org\n");`
125			`PRINTF (" Marko Mlinar, markom@opencores.org\n");`
126			`PRINTF ("Copyright (C) 2002 Marko Mlinar, markom@opencores.org\n");`
127			`PRINTF (" Simon Srot, simons@opencores.org\n");`
128			`PRINTF ("Visit http://www.opencores.org for more information about ");`
129			`PRINTF ("OpenRISC 1000 and\nother open source cores.\n\n");`
130			`PRINTF ("This software comes with ABSOLUTELY NO WARRANTY; for ");`
131			`PRINTF ("details see COPYING.\nThis is free software, and you ");`
132			`PRINTF ("are welcome to redistribute it under certain\nconditions; ");`
133			`PRINTF ("for details see COPYING.\n");`
134	2	cvs	`}`
135
136	7	jrydberg	`void`
137			`help()`
138	2	cvs	`{`
139	997	markom	`PRINTF("q - quit simulator\n");`
140			`PRINTF("r - display all registers\n");`
141			`PRINTF("t - execute next instruction\n");`
142			`PRINTF("run <instructions> [<hush>] - execute <instruction> instructions, no reg dump if hush\n");`
143			`PRINTF("pr <r> <value> - patch register <r> with <value>\n");`
144			`PRINTF("dm <fromaddr> [<toaddr>] - display memory from <fromaddr> to <toaddr>\n");`
145			`PRINTF("de <fromaddr> [<toaddr>] - debug insn memory\n");`
146			`PRINTF("pm <addr> <value> - patch memory location <addr> with <value>\n");`
147			`PRINTF("pc <value> - patch PC register with <value>\n");`
148			`PRINTF("break <addr> - toggle breakpoint at address <addr>\n");`
149			`PRINTF("reset - simulator reset\n");`
150			`PRINTF("hist - execution history\n");`
151			`PRINTF("stall - stalls the processor and gives control to the debugger\n");`
152			`PRINTF("stats <num\|clear> - execution statistics num or clear it.\n");`
153			`PRINTF("info - configuration info (caches etc.)\n");`
154			`PRINTF("dv <fromaddr> [<toaddr>] [<modname>] - dumps memory as verilog (use redirect)\n");`
155			`PRINTF("dh <fromaddr> [<toaddr>] - dumps memory as hex code (use redirect)\n");`
156			`PRINTF("<cmd> > <filename> - redirect simulator stdout to <filename> (and not emulated PRINTF)\n");`
157	551	markom	`#if !FAST_SIM`
158	997	markom	`PRINTF("set <section> <item> = <param> - set configuration. See sim.cfg for more information.\n");`
159			`PRINTF("debug - toggles simulator debug mode\n");`
160	868	markom	`mp_help ();`
161			`prof_help ();`
162	997	markom	`PRINTF("cuc - enters Custom Unit Compiler command prompt\n");`
163	551	markom	`#endif`
164	997	markom	`PRINTF("help - available commands (this list)\n");`
165	2	cvs	`}`
166
167	479	markom	`void debugmem (unsigned long from, unsigned long to );`
168	21	cmchen
169	479	markom	`/* Resets all subunits */`
170			`void sim_reset ()`
171			`{`
172	728	markom	`SCHED_INIT();`
173	479	markom	`uart_reset();`
174			`dma_reset();`
175			`eth_reset();`
176			`gpio_reset();`
177	645	markom	`vga_reset ();`
178			`fb_reset ();`
179	664	markom	`kbd_reset ();`
180	876	rherveille	`ata_reset();`
181	479	markom	`tick_reset();`
182			`pm_reset();`
183			`pic_reset();`
184			`mc_reset();`
185			`du_reset ();`
186	557	markom	`cpu_reset();`
187	479	markom	`}`
188
189	304	markom	`/* Initalizes all devices and sim */`
190			`void sim_init ()`
191	2	cvs	`{`
192	424	markom	`init_memory_table ();`
193	269	markom	`init_labels();`
194			`init_breakpoints();`
195	361	markom	`initstats();`
196			`build_automata();`
197
198	305	markom	`if (config.sim.profile) {`
199	361	markom	`runtime.sim.fprof = fopen(config.sim.prof_fn, "wt+");`
200			`if(!runtime.sim.fprof) {`
201	551	markom	`fprintf(stderr, "ERROR: Problems opening profile file.\n");`
202			`exit (1);`
203	173	markom	`} else`
204	897	markom	`fprintf(runtime.sim.fprof, "+00000000 FFFFFFFF FFFFFFFF [outside_functions]\n");`
205	173	markom	`}`
206	294	markom
207	547	markom	`if (config.sim.mprofile) {`
208			`runtime.sim.fmprof = fopen(config.sim.mprof_fn, "wb+");`
209			`if(!runtime.sim.fmprof) {`
210	551	markom	`fprintf(stderr, "ERROR: Problems opening memory profile file.\n");`
211			`exit (1);`
212	547	markom	`}`
213			`}`
214
215	294	markom	`if (config.sim.exe_log) {`
216	361	markom	`runtime.sim.fexe_log = fopen(config.sim.exe_log_fn, "wt+");`
217			`if(!runtime.sim.fexe_log) {`
218	997	markom	`PRINTF("ERROR: Problems opening exe_log file.\n");`
219	551	markom	`exit (1);`
220	294	markom	`}`
221			`}`
222	263	markom
223	624	ivang	`if (config.sim.spr_log) {`
224	997	markom	`PRINTF("OPENING SPRLOG\n");`
225	624	ivang	`runtime.sim.fspr_log = fopen(config.sim.spr_log_fn, "wt+");`
226			`if (!runtime.sim.fspr_log) {`
227	997	markom	`PRINTF("ERROR: Problems opening spr_log file.\n");`
228	624	ivang	`exit(1);`
229			`}`
230			`}`
231
232	262	markom	`/* Initialize memory */`
233			`{`
234	361	markom	`extern struct dev_memarea *dev_list;`
235	554	markom	`struct dev_memarea *area;`
236	361	markom	`int i;`
237			`if (config.memory.type == MT_RANDOM) {`
238			`unsigned int val = 0;`
239	123	markom
240	262	markom	`if (config.memory.random_seed == -1) {`
241	551	markom	`runtime.memory.random_seed = time(NULL);`
242	262	markom	`/* Print out the seed just in case we ever need to debug */`
243	997	markom	`PRINTF("Seeding random generator with value %d\n", config.memory.random_seed);`
244	551	markom	`} else`
245			`runtime.memory.random_seed = config.memory.random_seed;`
246			`srandom(runtime.memory.random_seed);`
247	262	markom
248	554	markom	`for (area = dev_list; area; area = area->next)`
249			`for(i = 0; i < area->size; i++) {`
250	221	markom	`val = random();`
251	554	markom	`setsim_mem8(i + area->addr_compare, val & 0xFF);`
252	221	markom	`}`
253	262	markom	`} else if(config.memory.type == MT_PATTERN) {`
254	554	markom	`for (area = dev_list; area; area = area->next)`
255			`for(i = 0; i < area->size; i++)`
256			`setsim_mem8(i + area->addr_compare, config.memory.pattern);`
257	269	markom	`} else if (config.memory.type != MT_UNKNOWN) {`
258	262	markom	`fprintf(stderr, "Invalid memory configuration type.\n");`
259	361	markom	`exit(1);`
260	221	markom	`}`
261	242	markom	`}`
262	262	markom
263	361	markom	`if(runtime.sim.filename) {`
264			`unsigned long endaddr = 0xFFFFFFFF;`
265			`endaddr = loadcode(runtime.sim.filename, 0, 0); /* MM170901 always load at address zero. */`
266			`if (endaddr == -1) {`
267			`fprintf(stderr, "Problems loading boot code.\n");`
268			`exit(1);`
269			`}`
270			`}`
271	551	markom
272			`#if !FAST_SIM /* We assume we have valid configuration with fsim*/`
273	361	markom	`/* Disable gdb debugging, if debug module is not available. */`
274			`if (config.debug.gdb_enabled && !config.debug.enabled) {`
275			`config.debug.gdb_enabled = 0;`
276			`if (config.sim.verbose)`
277			`fprintf (stderr, "WARNING: Debug module not enabled, cannot start gdb.\n");`
278			`}`
279	551	markom	`#endif`
280
281	550	markom	`if (config.debug.gdb_enabled)`
282	479	markom	`gdbcomm_init ();`
283	551	markom
284			`#if !FAST_SIM /* We assume we have valid configuration with fsim*/`
285	361	markom	`/* Enable dependency stats, if we want to do history analisis */`
286	394	markom	`if (config.sim.history && !config.cpu.dependstats) {`
287			`config.cpu.dependstats = 1;`
288	361	markom	`if (config.sim.verbose)`
289	394	markom	`fprintf (stderr, "WARNING: dependstats stats must be enabled to do history analisis.\n");`
290	361	markom	`}`
291	551	markom	`#endif`
292
293			`#if !FAST_SIM /* We assume we have valid configuration with fsim*/`
294	361	markom	`/* Debug forces verbose */`
295			`if (config.sim.debug && !config.sim.verbose) {`
296			`config.sim.verbose = 1;`
297			`fprintf (stderr, "WARNING: verbose turned on.\n");`
298			`}`
299	551	markom	`#endif`
300	361	markom
301			`/* Start VAPI before device initialization. */`
302			`if (config.vapi.enabled) {`
303	551	markom	`runtime.vapi.enabled = 1;`
304	361	markom	`vapi_init ();`
305			`if (config.sim.verbose)`
306	997	markom	`PRINTF ("VAPI started, waiting for clients.\n");`
307	361	markom	`}`
308	538	markom
309	479	markom	`sim_reset ();`
310	424	markom
311	543	simons	`lock_memory_table ();`
312
313	361	markom	`/* Wait till all test are connected. */`
314	551	markom	`if (runtime.vapi.enabled) {`
315	361	markom	`int numu = vapi_num_unconnected (0);`
316			`if (numu) {`
317	997	markom	`PRINTF ("\nWaiting for VAPI tests with ids:\n");`
318	361	markom	`vapi_num_unconnected (1);`
319	997	markom	`PRINTF ("\n");`
320	361	markom	`while (numu = vapi_num_unconnected (0)) {`
321			`vapi_check ();`
322	997	markom	`PRINTF ("\rStill waiting for %i VAPI test(s) to connect. ", numu);`
323	361	markom	`usleep (100);`
324			`}`
325	997	markom	`PRINTF ("\n");`
326	361	markom	`}`
327	997	markom	`PRINTF ("All devices connected \n");`
328	361	markom	`}`
329			`/* simulator is initialized */`
330			`runtime.sim.init = 0;`
331	304	markom	`}`
332	7	jrydberg
333	304	markom	`/* Display info about various modules */`
334			`void sim_info () {`
335	427	markom	`sprs_status();`
336	997	markom	`PRINTF ("\n");`
337	427	markom	`memory_table_status ();`
338	535	markom	`if (config.immu.enabled) itlb_status(-1);`
339			`if (config.dmmu.enabled) dtlb_status(-1);`
340			`if (config.ic.enabled) ic_info();`
341			`if (config.dc.enabled) dc_info();`
342	361	markom
343	541	markom	`if (config.bpb.enabled) bpb_info();`
344			`if (config.bpb.btic) btic_info();`
345	535	markom
346	741	ivang	`if (config.mc.enabled) mc_status();`
347	549	markom	`if (config.nuarts) uart_status();`
348			`if (config.ndmas) dma_status();`
349			`if (config.nethernets) eth_status();`
350			`if (config.ngpios) gpio_status();`
351	876	rherveille	`if (config.natas) ata_status();`
352	683	lampret	`kbd_info();`
353	304	markom	`}`
354
355			`/* Cleanup */`
356			`void sim_done ()`
357			`{`
358			`if (config.sim.profile) {`
359	884	markom	`fprintf(runtime.sim.fprof,"-%08X FFFFFFFF\n", runtime.sim.cycles);`
360	361	markom	`fclose(runtime.sim.fprof);`
361	304	markom	`}`
362	547	markom
363	847	markom	`if (config.sim.mprofile) fclose(runtime.sim.fmprof);`
364	361	markom	`if (config.sim.exe_log) fclose(runtime.sim.fexe_log);`
365	551	markom	`if (runtime.vapi.enabled) vapi_done ();`
366	426	markom	`done_memory_table ();`
367	304	markom	`exit(0);`
368			`}`
369
370	728	markom	`/* Executes jobs in time queue */`
371			`static inline void do_scheduler ()`
372			`{`
373			`void (*func)(int);`
374			`int param;`
375	632	ivang
376	728	markom	`/* Execute all jobs till now */`
377			`do {`
378			`func = SCHED_PEEK().func;`
379			`param = SCHED_PEEK().param;`
380			`SCHED_REMOVE();`
381			`func (param);`
382	884	markom	`} while (runtime.sim.cycles >= SCHED_PEEK().time);`
383	728	markom	`}`
384	632	ivang
385	728	markom	`/* Main function */`
386	304	markom	`int main(argc, argv)`
387			`int argc;`
388			`char *argv[];`
389			`{`
390	361	markom	`char *linestr;`
391			`char item1[500], b2[500], prev_str[500] = "";`
392			`char *redirstr;`
393			`int hush = 0;`
394			`int first_prompt = 1;`
395	304	markom
396	361	markom	`srand(getpid());`
397			`init_defconfig();`
398			`if (parse_args(argc, argv)) {`
399	997	markom	`PRINTF("Usage: %s [options] <filename>\n", argv[0]);`
400			`PRINTF("Options:\n");`
401			`PRINTF(" -v version and copyright note\n");`
402			`PRINTF(" -i enable interactive command prompt\n");`
403			`PRINTF(" --nosrv do not launch JTAG proxy server\n"); /* (CZ) */`
404			`PRINTF(" --srv <n> launch JTAG proxy server on port <n>; [random]\n"); /* (CZ) */`
405	551	markom	`#if !FAST_SIM`
406	997	markom	`PRINTF(" -f or --file load script file [sim.cfg]\n");`
407			`PRINTF(" --enable-profile enable profiling.\n");`
408			`PRINTF(" --enable-mprofile enable memory profiling.\n");`
409	551	markom	`#endif`
410	997	markom	`PRINTF(" --output-cfg prints C structure of current\n");`
411			`PRINTF(" configuration to standard output\n");`
412			`PRINTF("\nor : %s ", argv[0]);`
413	847	markom	`mp_help ();`
414	997	markom	`PRINTF("\nor : %s ", argv[0]);`
415	847	markom	`prof_help ();`
416	361	markom	`exit(-1);`
417			`}`
418	304	markom
419			`#ifdef HAVE_LIBREADLINE`
420	361	markom	`initialize_readline (); /* Bind our completer. */`
421	304	markom	`#endif`
422
423	551	markom	`#if !FAST_SIM`
424	304	markom	`/* Read configuration file. */`
425	361	markom	`if (!runtime.sim.script_file_specified)`
426			`read_script_file ("sim.cfg");`
427	883	markom
428			`/* Overide parameters with command line ones */`
429			`if (runtime.simcmd.profile) config.sim.profile = 1;`
430			`if (runtime.simcmd.mprofile) config.sim.mprofile = 1;`
431
432	424	markom	`if (!runtime.sim.script_file_specified && config.sim.verbose)`
433			`fprintf (stderr, "WARNING: No config file read, assuming default configuration.\n");`
434	551	markom	`#else`
435	997	markom	`PRINTF ("\n\tNOTE: running fast sim with fixed configuration!\n\n");`
436	551	markom	`#endif`
437	549	markom	`if (runtime.sim.output_cfg) {`
438			`output_cfg (stdout);`
439			`exit (0);`
440			`}`
441	304	markom	`print_config();`
442	336	markom	`sim_init ();`
443	304	markom	`signal(SIGINT, ctrl_c);`
444	335	markom
445	361	markom	`while(1) {`
446	551	markom	`if (runtime.sim.iprompt) {`
447	550	markom	`if (config.debug.gdb_enabled)`
448	361	markom	`{`
449	997	markom	`PRINTF ("(sim) ");`
450	361	markom	`fflush(stdout);`
451			`HandleServerSocket(true); /* block & check_stdin = true */`
452			`}`
453	16	jrydberg	`#ifdef HAVE_LIBREADLINE`
454	361	markom	`/* Must disable readline in new mode. It isn't compatible`
455			`with non blocking environments */`
456	550	markom	`if(!config.debug.gdb_enabled)`
457	361	markom	`linestr = readline("(sim) ");`
458			`else`
459			`linestr = fgets(b2, sizeof b2, stdin);`
460	16	jrydberg	`#else`
461	550	markom	`if(!config.debug.gdb_enabled)`
462	997	markom	`PRINTF ("(sim) ");`
463	361	markom	`linestr = fgets(b2, sizeof b2, stdin);`
464	16	jrydberg	`#endif`
465	361	markom	`} else`
466			`strcpy(linestr = b2, "run -1 hush");`
467	7	jrydberg
468	361	markom	`if (!linestr)`
469			`break;`
470			`linestr = stripwhite (linestr);`
471	7	jrydberg
472	16	jrydberg	`#ifdef HAVE_LIBREADLINE`
473	361	markom	`/* Readline only works in the old mode */`
474			`if(!server_fd)`
475			`{`
476			`if (strlen(linestr) == 0) {`
477			`char *l = repeat_last_command ();`
478
479			`if (l) {`
480			`free (linestr);`
481			`linestr = l;`
482			`}`
483			`}`
484
485			`if (*linestr) {`
486			`add_history (linestr);`
487			`}`
488			`}`
489	16	jrydberg	`#endif /* HAVE_LIBREADLINE */`
490	361	markom
491			`if (redirstr = strstr(linestr, ">")) {`
492			`*redirstr = '\0';`
493			`strtoken(&redirstr[1], item1, 1);`
494	997	markom	`runtime.sim.fout = fopen(item1, "w+");`
495			`if (!runtime.sim.fout) runtime.sim.fout = stdout;`
496	361	markom	`}`
497
498			`if (linestr[0] == '\n')`
499			`strcpy (linestr, &prev_str[0]);`
500			`else`

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