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/* Simulator tracing/debugging support.
   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
   Contributed by Cygnus Support.
 
This file is part of GDB, the GNU debugger.
 
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, 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.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
#include "sim-main.h"
#include "sim-io.h"
#include "sim-options.h"
#include "sim-fpu.h"
 
#include "bfd.h"
#include "libiberty.h"
 
#include "sim-assert.h"
 
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
 
#ifndef SIZE_PHASE
#define SIZE_PHASE 8
#endif
 
#ifndef SIZE_LOCATION
#define SIZE_LOCATION 20
#endif
 
#ifndef SIZE_PC
#define SIZE_PC 6
#endif
 
#ifndef SIZE_LINE_NUMBER
#define SIZE_LINE_NUMBER 4
#endif
 
static MODULE_INIT_FN trace_init;
static MODULE_UNINSTALL_FN trace_uninstall;
 
static DECLARE_OPTION_HANDLER (trace_option_handler);
 
enum {
  OPTION_TRACE_INSN     = OPTION_START,
  OPTION_TRACE_DECODE,
  OPTION_TRACE_EXTRACT,
  OPTION_TRACE_LINENUM,
  OPTION_TRACE_MEMORY,
  OPTION_TRACE_MODEL,
  OPTION_TRACE_ALU,
  OPTION_TRACE_CORE,
  OPTION_TRACE_EVENTS,
  OPTION_TRACE_FPU,
  OPTION_TRACE_BRANCH,
  OPTION_TRACE_SEMANTICS,
  OPTION_TRACE_RANGE,
  OPTION_TRACE_FUNCTION,
  OPTION_TRACE_DEBUG,
  OPTION_TRACE_FILE
};
 
static const OPTION trace_options[] =
{
  /* This table is organized to group related instructions together.  */
  { {"trace", optional_argument, NULL, 't'},
      't', "on|off", "Trace useful things",
      trace_option_handler },
  { {"trace-insn", optional_argument, NULL, OPTION_TRACE_INSN},
      '\0', "on|off", "Perform instruction tracing",
      trace_option_handler },
  { {"trace-decode", optional_argument, NULL, OPTION_TRACE_DECODE},
      '\0', "on|off", "Trace instruction decoding",
      trace_option_handler },
  { {"trace-extract", optional_argument, NULL, OPTION_TRACE_EXTRACT},
      '\0', "on|off", "Trace instruction extraction",
      trace_option_handler },
  { {"trace-linenum", optional_argument, NULL, OPTION_TRACE_LINENUM},
      '\0', "on|off", "Perform line number tracing (implies --trace-insn)",
      trace_option_handler },
  { {"trace-memory", optional_argument, NULL, OPTION_TRACE_MEMORY},
      '\0', "on|off", "Trace memory operations",
      trace_option_handler },
  { {"trace-alu", optional_argument, NULL, OPTION_TRACE_ALU},
      '\0', "on|off", "Trace ALU operations",
      trace_option_handler },
  { {"trace-fpu", optional_argument, NULL, OPTION_TRACE_FPU},
      '\0', "on|off", "Trace FPU operations",
      trace_option_handler },
  { {"trace-branch", optional_argument, NULL, OPTION_TRACE_BRANCH},
      '\0', "on|off", "Trace branching",
      trace_option_handler },
  { {"trace-semantics", optional_argument, NULL, OPTION_TRACE_SEMANTICS},
      '\0', "on|off", "Perform ALU, FPU, MEMORY, and BRANCH tracing",
      trace_option_handler },
  { {"trace-model", optional_argument, NULL, OPTION_TRACE_MODEL},
      '\0', "on|off", "Include model performance data",
      trace_option_handler },
  { {"trace-core", optional_argument, NULL, OPTION_TRACE_CORE},
      '\0', "on|off", "Trace core operations",
      trace_option_handler },
  { {"trace-events", optional_argument, NULL, OPTION_TRACE_EVENTS},
      '\0', "on|off", "Trace events",
      trace_option_handler },
#ifdef SIM_HAVE_ADDR_RANGE
  { {"trace-range", required_argument, NULL, OPTION_TRACE_RANGE},
      '\0', "START,END", "Specify range of addresses for instruction tracing",
      trace_option_handler },
#if 0 /*wip*/
  { {"trace-function", required_argument, NULL, OPTION_TRACE_FUNCTION},
      '\0', "FUNCTION", "Specify function to trace",
      trace_option_handler },
#endif
#endif
  { {"trace-debug", optional_argument, NULL, OPTION_TRACE_DEBUG},
      '\0', "on|off", "Add information useful for debugging the simulator to the tracing output",
      trace_option_handler },
  { {"trace-file", required_argument, NULL, OPTION_TRACE_FILE},
      '\0', "FILE NAME", "Specify tracing output file",
      trace_option_handler },
  { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
};
 
/* Set/reset the trace options indicated in MASK.  */
 
static SIM_RC
set_trace_option_mask (sd, name, mask, arg)
     SIM_DESC sd;
     const char *name;
     int mask;
     const char *arg;
{
  int trace_nr;
  int cpu_nr;
  int trace_val = 1;
 
  if (arg != NULL)
    {
      if (strcmp (arg, "yes") == 0
          || strcmp (arg, "on") == 0
          || strcmp (arg, "1") == 0)
        trace_val = 1;
      else if (strcmp (arg, "no") == 0
               || strcmp (arg, "off") == 0
               || strcmp (arg, "0") == 0)
        trace_val = 0;
      else
        {
          sim_io_eprintf (sd, "Argument `%s' for `--trace%s' invalid, one of `on', `off', `yes', `no' expected\n", arg, name);
          return SIM_RC_FAIL;
        }
    }
 
  /* update applicable trace bits */
  for (trace_nr = 0; trace_nr < MAX_TRACE_VALUES; ++trace_nr)
    {
      if ((mask & (1 << trace_nr)) == 0)
        continue;
 
      /* Set non-cpu specific values.  */
      switch (trace_nr)
        {
        case TRACE_EVENTS_IDX:
          STATE_EVENTS (sd)->trace = trace_val;
          break;
        case TRACE_DEBUG_IDX:
          STATE_TRACE_FLAGS (sd)[trace_nr] = trace_val;
          break;
        }
 
      /* Set cpu values.  */
      for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
        {
          CPU_TRACE_FLAGS (STATE_CPU (sd, cpu_nr))[trace_nr] = trace_val;
        }
    }
 
  /* Re-compute the cpu trace summary.  */
  if (trace_val)
    {
      for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
        CPU_TRACE_DATA (STATE_CPU (sd, cpu_nr))->trace_any_p = 1;
    }
  else
    {
      for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
        {
          CPU_TRACE_DATA (STATE_CPU (sd, cpu_nr))->trace_any_p = 0;
          for (trace_nr = 0; trace_nr < MAX_TRACE_VALUES; ++trace_nr)
            {
              if (CPU_TRACE_FLAGS (STATE_CPU (sd, cpu_nr))[trace_nr])
                {
                  CPU_TRACE_DATA (STATE_CPU (sd, cpu_nr))->trace_any_p = 1;
                  break;
                }
            }
        }
    }
 
  return SIM_RC_OK;
}
 
/* Set one trace option based on its IDX value.  */
 
static SIM_RC
set_trace_option (sd, name, idx, arg)
     SIM_DESC sd;
     const char *name;
     int idx;
     const char *arg;
{
  return set_trace_option_mask (sd, name, 1 << idx, arg);
}
 
 
static SIM_RC
trace_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
                      char *arg, int is_command)
{
  int n;
  int cpu_nr;
 
  switch (opt)
    {
    case 't' :
      if (! WITH_TRACE)
        sim_io_eprintf (sd, "Tracing not compiled in, `-t' ignored\n");
      else
        return set_trace_option_mask (sd, "trace", TRACE_USEFUL_MASK, arg);
      break;
 
    case OPTION_TRACE_INSN :
      if (WITH_TRACE_INSN_P)
        return set_trace_option (sd, "-insn", TRACE_INSN_IDX, arg);
      else
        sim_io_eprintf (sd, "Instruction tracing not compiled in, `--trace-insn' ignored\n");
      break;
 
    case OPTION_TRACE_DECODE :
      if (WITH_TRACE_DECODE_P)
        return set_trace_option (sd, "-decode", TRACE_DECODE_IDX, arg);
      else
        sim_io_eprintf (sd, "Decode tracing not compiled in, `--trace-decode' ignored\n");
      break;
 
    case OPTION_TRACE_EXTRACT :
      if (WITH_TRACE_EXTRACT_P)
        return set_trace_option (sd, "-extract", TRACE_EXTRACT_IDX, arg);
      else
        sim_io_eprintf (sd, "Extract tracing not compiled in, `--trace-extract' ignored\n");
      break;
 
    case OPTION_TRACE_LINENUM :
      if (WITH_TRACE_LINENUM_P && WITH_TRACE_INSN_P)
        {
          if (set_trace_option (sd, "-linenum", TRACE_LINENUM_IDX, arg) != SIM_RC_OK
              || set_trace_option (sd, "-linenum", TRACE_INSN_IDX, arg) != SIM_RC_OK)
            return SIM_RC_FAIL;
        }
      else
        sim_io_eprintf (sd, "Line number or instruction tracing not compiled in, `--trace-linenum' ignored\n");
      break;
 
    case OPTION_TRACE_MEMORY :
      if (WITH_TRACE_MEMORY_P)
        return set_trace_option (sd, "-memory", TRACE_MEMORY_IDX, arg);
      else
        sim_io_eprintf (sd, "Memory tracing not compiled in, `--trace-memory' ignored\n");
      break;
 
    case OPTION_TRACE_MODEL :
      if (WITH_TRACE_MODEL_P)
        return set_trace_option (sd, "-model", TRACE_MODEL_IDX, arg);
      else
        sim_io_eprintf (sd, "Model tracing not compiled in, `--trace-model' ignored\n");
      break;
 
    case OPTION_TRACE_ALU :
      if (WITH_TRACE_ALU_P)
        return set_trace_option (sd, "-alu", TRACE_ALU_IDX, arg);
      else
        sim_io_eprintf (sd, "ALU tracing not compiled in, `--trace-alu' ignored\n");
      break;
 
    case OPTION_TRACE_CORE :
      if (WITH_TRACE_CORE_P)
        return set_trace_option (sd, "-core", TRACE_CORE_IDX, arg);
      else
        sim_io_eprintf (sd, "CORE tracing not compiled in, `--trace-core' ignored\n");
      break;
 
    case OPTION_TRACE_EVENTS :
      if (WITH_TRACE_EVENTS_P)
        return set_trace_option (sd, "-events", TRACE_EVENTS_IDX, arg);
      else
        sim_io_eprintf (sd, "EVENTS tracing not compiled in, `--trace-events' ignored\n");
      break;
 
    case OPTION_TRACE_FPU :
      if (WITH_TRACE_FPU_P)
        return set_trace_option (sd, "-fpu", TRACE_FPU_IDX, arg);
      else
        sim_io_eprintf (sd, "FPU tracing not compiled in, `--trace-fpu' ignored\n");
      break;
 
    case OPTION_TRACE_BRANCH :
      if (WITH_TRACE_BRANCH_P)
        return set_trace_option (sd, "-branch", TRACE_BRANCH_IDX, arg);
      else
        sim_io_eprintf (sd, "Branch tracing not compiled in, `--trace-branch' ignored\n");
      break;
 
    case OPTION_TRACE_SEMANTICS :
      if (WITH_TRACE_ALU_P
          && WITH_TRACE_FPU_P
          && WITH_TRACE_MEMORY_P
          && WITH_TRACE_BRANCH_P)
        {
          if (set_trace_option (sd, "-semantics", TRACE_ALU_IDX, arg) != SIM_RC_OK
              || set_trace_option (sd, "-semantics", TRACE_FPU_IDX, arg) != SIM_RC_OK
              || set_trace_option (sd, "-semantics", TRACE_MEMORY_IDX, arg) != SIM_RC_OK
              || set_trace_option (sd, "-semantics", TRACE_BRANCH_IDX, arg) != SIM_RC_OK)
            return SIM_RC_FAIL;
        }
      else
        sim_io_eprintf (sd, "Alu, fpu, memory, and/or branch tracing not compiled in, `--trace-semantics' ignored\n");
      break;
 
#ifdef SIM_HAVE_ADDR_RANGE
    case OPTION_TRACE_RANGE :
      if (WITH_TRACE)
        {
          char *chp = arg;
          unsigned long start,end;
          start = strtoul (chp, &chp, 0);
          if (*chp != ',')
            {
              sim_io_eprintf (sd, "--trace-range missing END argument\n");
              return SIM_RC_FAIL;
            }
          end = strtoul (chp + 1, NULL, 0);
          /* FIXME: Argument validation.  */
          if (cpu != NULL)
            sim_addr_range_add (TRACE_RANGE (CPU_PROFILE_DATA (cpu)),
                                start, end);
          else
            for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; ++cpu_nr)
              sim_addr_range_add (TRACE_RANGE (CPU_TRACE_DATA (STATE_CPU (sd, cpu_nr))),
                                  start, end);
        }
      else
        sim_io_eprintf (sd, "Tracing not compiled in, `--trace-range' ignored\n");
      break;
 
    case OPTION_TRACE_FUNCTION :
      if (WITH_TRACE)
        {
          /*wip: need to compute function range given name*/
        }
      else
        sim_io_eprintf (sd, "Tracing not compiled in, `--trace-function' ignored\n");
      break;
#endif /* SIM_HAVE_ADDR_RANGE */
 
    case OPTION_TRACE_DEBUG :
      if (WITH_TRACE_DEBUG_P)
        return set_trace_option (sd, "-debug", TRACE_DEBUG_IDX, arg);
      else
        sim_io_eprintf (sd, "Tracing debug support not compiled in, `--trace-debug' ignored\n");
      break;
 
    case OPTION_TRACE_FILE :
      if (! WITH_TRACE)
        sim_io_eprintf (sd, "Tracing not compiled in, `--trace-file' ignored\n");
      else
        {
          FILE *f = fopen (arg, "w");
 
          if (f == NULL)
            {
              sim_io_eprintf (sd, "Unable to open trace output file `%s'\n", arg);
              return SIM_RC_FAIL;
            }
          for (n = 0; n < MAX_NR_PROCESSORS; ++n)
            TRACE_FILE (CPU_TRACE_DATA (STATE_CPU (sd, n))) = f;
          TRACE_FILE (STATE_TRACE_DATA (sd)) = f;
        }
      break;
    }
 
  return SIM_RC_OK;
}
 
/* Install tracing support.  */
 
SIM_RC
trace_install (SIM_DESC sd)
{
  int i;
 
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
 
  sim_add_option_table (sd, NULL, trace_options);
  memset (STATE_TRACE_DATA (sd), 0, sizeof (* STATE_TRACE_DATA (sd)));
  for (i = 0; i < MAX_NR_PROCESSORS; ++i)
    memset (CPU_TRACE_DATA (STATE_CPU (sd, i)), 0,
            sizeof (* CPU_TRACE_DATA (STATE_CPU (sd, i))));
  sim_module_add_init_fn (sd, trace_init);
  sim_module_add_uninstall_fn (sd, trace_uninstall);
  return SIM_RC_OK;
}
 
static SIM_RC
trace_init (SIM_DESC sd)
{
#ifdef SIM_HAVE_ADDR_RANGE
  /* Check if a range has been specified without specifying what to
     collect.  */
  {
    int i;
 
    for (i = 0; i < MAX_NR_PROCESSORS; ++i)
      {
        sim_cpu *cpu = STATE_CPU (sd, i);
 
        if (ADDR_RANGE_RANGES (TRACE_RANGE (CPU_TRACE_DATA (cpu)))
            && ! TRACE_INSN_P (cpu))
          {
            sim_io_eprintf_cpu (cpu, "Tracing address range specified without --trace-insn.\n");
            sim_io_eprintf_cpu (cpu, "Address range ignored.\n");
            sim_addr_range_delete (TRACE_RANGE (CPU_TRACE_DATA (cpu)),
                                   0, ~ (address_word) 0);
          }
      }
  }
#endif
 
  return SIM_RC_OK;
}
 
static void
trace_uninstall (SIM_DESC sd)
{
  int i,j;
  FILE *sfile = TRACE_FILE (STATE_TRACE_DATA (sd));
 
  if (sfile != NULL)
    fclose (sfile);
 
  for (i = 0; i < MAX_NR_PROCESSORS; ++i)
    {
      FILE *cfile = TRACE_FILE (CPU_TRACE_DATA (STATE_CPU (sd, i)));
      if (cfile != NULL && cfile != sfile)
        {
          /* If output from different cpus is going to the same file,
             avoid closing the file twice.  */
          for (j = 0; j < i; ++j)
            if (TRACE_FILE (CPU_TRACE_DATA (STATE_CPU (sd, j))) == cfile)
              break;
          if (i == j)
            fclose (cfile);
        }
    }
}
 
typedef enum {
  trace_fmt_invalid,
  trace_fmt_word,
  trace_fmt_fp,
  trace_fmt_fpu,
  trace_fmt_string,
  trace_fmt_bool,
  trace_fmt_addr,
  trace_fmt_instruction_incomplete,
} data_fmt;
 
/* compute the nr of trace data units consumed by data */
static int
save_data_size (TRACE_DATA *data,
                long size)
{
  return ((size + sizeof (TRACE_INPUT_DATA (data) [0]) - 1)
          / sizeof (TRACE_INPUT_DATA (data) [0]));
}
 
 
/* Archive DATA into the trace buffer */
static void
save_data (SIM_DESC sd,
           TRACE_DATA *data,
           data_fmt fmt,
           long size,
           void *buf)
{
  int i = TRACE_INPUT_IDX (data);
  if (i == sizeof (TRACE_INPUT_FMT (data)))
    sim_io_error (sd, "trace buffer overflow");
  TRACE_INPUT_FMT (data) [i] = fmt;
  TRACE_INPUT_SIZE (data) [i] = size;
  memcpy (&TRACE_INPUT_DATA (data) [i], buf, size);
  i += save_data_size (data, size);
  TRACE_INPUT_IDX (data) = i;
}
 
static void
print_data (SIM_DESC sd,
            sim_cpu *cpu,
            data_fmt fmt,
            long size,
            void *data)
{
  switch (fmt)
    {
    case trace_fmt_instruction_incomplete:
      trace_printf (sd, cpu, " (instruction incomplete)");
      break;
    case trace_fmt_word:
    case trace_fmt_addr:
      {
        switch (size)
          {
          case sizeof (unsigned32):
            trace_printf (sd, cpu, " 0x%08lx", (long) * (unsigned32*) data);
            break;
          case sizeof (unsigned64):
            trace_printf (sd, cpu, " 0x%08lx%08lx",
                          (long) ((* (unsigned64*) data) >> 32),
                          (long) * (unsigned64*) data);
            break;
          default:
            abort ();
          }
        break;
      }
    case trace_fmt_bool:
      {
        SIM_ASSERT (size == sizeof (int));
        trace_printf (sd, cpu, " %-8s",
                      (* (int*) data) ? "true" : "false");
        break;
      }
    case trace_fmt_fp:
      {
        sim_fpu fp;
        switch (size)
          {
            /* FIXME: Assumes sizeof float == 4; sizeof double == 8 */
          case 4:
            sim_fpu_32to (&fp, *(unsigned32*)data);
            break;
          case 8:
            sim_fpu_64to (&fp, *(unsigned64*)data);
            break;
          default:
            abort ();
          }
        trace_printf (sd, cpu, " %8g", sim_fpu_2d (&fp));
        switch (size)
          {
          case 4:
            trace_printf (sd, cpu, " (0x%08lx)",
                          (long) *(unsigned32*)data);
            break;
          case 8:
            trace_printf (sd, cpu, " (0x%08lx%08lx)",
                          (long) (*(unsigned64*)data >> 32),
                          (long) (*(unsigned64*)data));
            break;
          default:
            abort ();
          }
        break;
      }
    case trace_fmt_fpu:
      /* FIXME: At present sim_fpu data is stored as a double */
      trace_printf (sd, cpu, " %8g", * (double*) data);
      break;
    case trace_fmt_string:
      trace_printf (sd, cpu, " %-8s", (char*) data);
      break;
    default:
      abort ();
    }
}
 
static const char *
trace_idx_to_str (int trace_idx)
{
  static char num[8];
  switch (trace_idx)
    {
    case TRACE_ALU_IDX:     return "alu:     ";
    case TRACE_INSN_IDX:    return "insn:    ";
    case TRACE_DECODE_IDX:  return "decode:  ";
    case TRACE_EXTRACT_IDX: return "extract: ";
    case TRACE_MEMORY_IDX:  return "memory:  ";
    case TRACE_CORE_IDX:    return "core:    ";
    case TRACE_EVENTS_IDX:  return "events:  ";
    case TRACE_FPU_IDX:     return "fpu:     ";
    case TRACE_BRANCH_IDX:  return "branch:  ";
    default:
      sprintf (num, "?%d?", trace_idx);
      return num;
    }
}
 
static void
trace_results (SIM_DESC sd,
               sim_cpu *cpu,
               int trace_idx,
               int last_input)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int nr_out;
  int i;
 
  /* cross check trace_idx against TRACE_IDX (data)? */
 
  /* prefix */
  trace_printf (sd, cpu, "%s %s",
                trace_idx_to_str (TRACE_IDX (data)),
                TRACE_PREFIX (data));
  TRACE_IDX (data) = 0;
 
  for (i = 0, nr_out = 0;
       i < TRACE_INPUT_IDX (data);
       i += save_data_size (data, TRACE_INPUT_SIZE (data) [i]), nr_out++)
    {
      if (i == last_input)
        {
          int pad = (strlen (" 0x") + sizeof (unsigned_word) * 2);
          int padding = pad * (3 - nr_out);
          if (padding < 0)
            padding = 0;
          padding += strlen (" ::");
          trace_printf (sd, cpu, "%*s", padding, " ::");
        }
      print_data (sd, cpu,
                  TRACE_INPUT_FMT (data) [i],
                  TRACE_INPUT_SIZE (data) [i],
                  &TRACE_INPUT_DATA (data) [i]);
    }
  trace_printf (sd, cpu, "\n");
}
 
void
trace_prefix (SIM_DESC sd,
              sim_cpu *cpu,
              sim_cia cia,
              address_word pc,
              int line_p,
              const char *filename,
              int linenum,
              const char *fmt,
              ...)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  va_list ap;
  char *prefix = TRACE_PREFIX (data);
  char *chp;
 /* FIXME: The TRACE_PREFIX_WIDTH should be determined at build time using
    known information about the disassembled instructions. */
#ifndef TRACE_PREFIX_WIDTH
#define TRACE_PREFIX_WIDTH 48
#endif
  int width = TRACE_PREFIX_WIDTH;
 
  /* if the previous trace data wasn't flushed, flush it now with a
     note indicating that the trace was incomplete. */
  if (TRACE_IDX (data) != 0)
    {
      int last_input = TRACE_INPUT_IDX (data);
      save_data (sd, data, trace_fmt_instruction_incomplete, 1, "");
      trace_results (sd, cpu, TRACE_IDX (data), last_input);
    }
  TRACE_IDX (data) = 0;
  TRACE_INPUT_IDX (data) = 0;
 
  /* Create the text prefix for this new instruction: */
  if (!line_p)
    {
      if (filename)
        {
          sprintf (prefix, "%s:%-*d 0x%.*lx ",
                   filename,
                   SIZE_LINE_NUMBER, linenum,
                   SIZE_PC, (long) pc);
        }
      else
        {
          sprintf (prefix, "0x%.*lx ",
                   SIZE_PC, (long) pc);
          /* Shrink the width by the amount that we didn't print.  */
          width -= SIZE_LINE_NUMBER + SIZE_PC + 8;
        }
      chp = strchr (prefix, '\0');
      va_start (ap, fmt);
      vsprintf (chp, fmt, ap);
      va_end (ap);
    }
  else
    {
      char buf[256];
      buf[0] = 0;
      if (STATE_TEXT_SECTION (CPU_STATE (cpu))
          && pc >= STATE_TEXT_START (CPU_STATE (cpu))
          && pc < STATE_TEXT_END (CPU_STATE (cpu)))
        {
          const char *pc_filename = (const char *)0;
          const char *pc_function = (const char *)0;
          unsigned int pc_linenum = 0;
          bfd *abfd;
          asymbol **asymbols;
 
          abfd = STATE_PROG_BFD (CPU_STATE (cpu));
          asymbols = STATE_PROG_SYMS (CPU_STATE (cpu));
          if (asymbols == NULL)
            {
              long symsize;
              long symbol_count;
 
              symsize = bfd_get_symtab_upper_bound (abfd);
              if (symsize < 0)
                {
                  sim_engine_abort (sd, cpu, cia, "could not read symbols");
                }
              asymbols = (asymbol **) xmalloc (symsize);
              symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
              if (symbol_count < 0)
                {
                  sim_engine_abort (sd, cpu, cia, "could not canonicalize symbols");
                }
              STATE_PROG_SYMS (CPU_STATE (cpu)) = asymbols;
            }
 
          if (bfd_find_nearest_line (abfd,
                                     STATE_TEXT_SECTION (CPU_STATE (cpu)),
                                     asymbols,
                                     pc - STATE_TEXT_START (CPU_STATE (cpu)),
                                     &pc_filename, &pc_function, &pc_linenum))
            {
              char *p = buf;
              if (pc_linenum)
                {
                  sprintf (p, "#%-*d ", SIZE_LINE_NUMBER, pc_linenum);
                  p += strlen (p);
                }
              else
                {
                  sprintf (p, "%-*s ", SIZE_LINE_NUMBER+1, "---");
                  p += SIZE_LINE_NUMBER+2;
                }
 
              if (pc_function)
                {
                  sprintf (p, "%s ", pc_function);
                  p += strlen (p);
                }
              else if (pc_filename)
                {
                  char *q = (char *) strrchr (pc_filename, '/');
                  sprintf (p, "%s ", (q) ? q+1 : pc_filename);
                  p += strlen (p);
                }
 
              if (*p == ' ')
                *p = '\0';
            }
        }
 
      sprintf (prefix, "0x%.*x %-*.*s ",
               SIZE_PC, (unsigned) pc,
               SIZE_LOCATION, SIZE_LOCATION, buf);
      chp = strchr (prefix, '\0');
      va_start (ap, fmt);
      vsprintf (chp, fmt, ap);
      va_end (ap);
    }
 
  /* Pad it out to TRACE_PREFIX_WIDTH.  */
  chp = strchr (prefix, '\0');
  if (chp - prefix < width)
    {
      memset (chp, ' ', width - (chp - prefix));
      chp = &prefix [width];
      *chp = '\0';
    }
  strcpy (chp, " -");
 
  /* check that we've not over flowed the prefix buffer */
  if (strlen (prefix) >= sizeof (TRACE_PREFIX (data)))
    abort ();
}
 
void
trace_generic (SIM_DESC sd,
               sim_cpu *cpu,
               int trace_idx,
               const char *fmt,
               ...)
{
  va_list ap;
  trace_printf (sd, cpu, "%s %s",
                trace_idx_to_str (trace_idx),
                TRACE_PREFIX (CPU_TRACE_DATA (cpu)));
  va_start (ap, fmt);
  trace_vprintf (sd, cpu, fmt, ap);
  va_end (ap);
  trace_printf (sd, cpu, "\n");
}
 
void
trace_input0 (SIM_DESC sd,
              sim_cpu *cpu,
              int trace_idx)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
}
 
void
trace_input_word1 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   unsigned_word d0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &d0);
}
 
void
trace_input_word2 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   unsigned_word d0,
                   unsigned_word d1)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &d0);
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &d1);
}
 
void
trace_input_word3 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   unsigned_word d0,
                   unsigned_word d1,
                   unsigned_word d2)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &d0);
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &d1);
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &d2);
}
 
void
trace_input_word4 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   unsigned_word d0,
                   unsigned_word d1,
                   unsigned_word d2,
                   unsigned_word d3)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_word, sizeof (d0), &d0);
  save_data (sd, data, trace_fmt_word, sizeof (d1), &d1);
  save_data (sd, data, trace_fmt_word, sizeof (d2), &d2);
  save_data (sd, data, trace_fmt_word, sizeof (d3), &d3);
}
 
void
trace_input_bool1 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   int d0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_bool, sizeof (d0), &d0);
}
 
void
trace_input_addr1 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   address_word d0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_addr, sizeof (d0), &d0);
}
 
void
trace_input_fp1 (SIM_DESC sd,
                 sim_cpu *cpu,
                 int trace_idx,
                 fp_word f0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f0);
}
 
void
trace_input_fp2 (SIM_DESC sd,
                 sim_cpu *cpu,
                 int trace_idx,
                 fp_word f0,
                 fp_word f1)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f0);
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f1);
}
 
void
trace_input_fp3 (SIM_DESC sd,
                 sim_cpu *cpu,
                 int trace_idx,
                 fp_word f0,
                 fp_word f1,
                 fp_word f2)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f0);
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f1);
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f2);
}
 
void
trace_input_fpu1 (SIM_DESC sd,
                  sim_cpu *cpu,
                  int trace_idx,
                  sim_fpu *f0)
{
  double d;
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  d = sim_fpu_2d (f0);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
}
 
void
trace_input_fpu2 (SIM_DESC sd,
                  sim_cpu *cpu,
                  int trace_idx,
                  sim_fpu *f0,
                  sim_fpu *f1)
{
  double d;
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  d = sim_fpu_2d (f0);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
  d = sim_fpu_2d (f1);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
}
 
void
trace_input_fpu3 (SIM_DESC sd,
                  sim_cpu *cpu,
                  int trace_idx,
                  sim_fpu *f0,
                  sim_fpu *f1,
                  sim_fpu *f2)
{
  double d;
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  TRACE_IDX (data) = trace_idx;
  d = sim_fpu_2d (f0);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
  d = sim_fpu_2d (f1);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
  d = sim_fpu_2d (f2);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
}
 
void
trace_result_word1 (SIM_DESC sd,
                    sim_cpu *cpu,
                    int trace_idx,
                    unsigned_word r0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &r0);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result0 (SIM_DESC sd,
               sim_cpu *cpu,
               int trace_idx)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_word2 (SIM_DESC sd,
                    sim_cpu *cpu,
                    int trace_idx,
                    unsigned_word r0,
                    unsigned_word r1)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_word, sizeof (r0), &r0);
  save_data (sd, data, trace_fmt_word, sizeof (r1), &r1);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_word4 (SIM_DESC sd,
                    sim_cpu *cpu,
                    int trace_idx,
                    unsigned_word r0,
                    unsigned_word r1,
                    unsigned_word r2,
                    unsigned_word r3)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_word, sizeof (r0), &r0);
  save_data (sd, data, trace_fmt_word, sizeof (r1), &r1);
  save_data (sd, data, trace_fmt_word, sizeof (r2), &r2);
  save_data (sd, data, trace_fmt_word, sizeof (r3), &r3);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_bool1 (SIM_DESC sd,
                    sim_cpu *cpu,
                    int trace_idx,
                    int r0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_bool, sizeof (r0), &r0);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_addr1 (SIM_DESC sd,
                    sim_cpu *cpu,
                    int trace_idx,
                    address_word r0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_addr, sizeof (r0), &r0);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_fp1 (SIM_DESC sd,
                  sim_cpu *cpu,
                  int trace_idx,
                  fp_word f0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_fp, sizeof (fp_word), &f0);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_fp2 (SIM_DESC sd,
                  sim_cpu *cpu,
                  int trace_idx,
                  fp_word f0,
                  fp_word f1)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_fp, sizeof (f0), &f0);
  save_data (sd, data, trace_fmt_fp, sizeof (f1), &f1);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_fpu1 (SIM_DESC sd,
                   sim_cpu *cpu,
                   int trace_idx,
                   sim_fpu *f0)
{
  double d;
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  d = sim_fpu_2d (f0);
  save_data (sd, data, trace_fmt_fp, sizeof (double), &d);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_string1 (SIM_DESC sd,
                      sim_cpu *cpu,
                      int trace_idx,
                      char *s0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_string, strlen (s0) + 1, s0);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_result_word1_string1 (SIM_DESC sd,
                            sim_cpu *cpu,
                            int trace_idx,
                            unsigned_word r0,
                            char *s0)
{
  TRACE_DATA *data = CPU_TRACE_DATA (cpu);
  int last_input;
 
  /* Append any results to the end of the inputs */
  last_input = TRACE_INPUT_IDX (data);
  save_data (sd, data, trace_fmt_word, sizeof (unsigned_word), &r0);
  save_data (sd, data, trace_fmt_string, strlen (s0) + 1, s0);
 
  trace_results (sd, cpu, trace_idx, last_input);
}
 
void
trace_vprintf (SIM_DESC sd, sim_cpu *cpu, const char *fmt, va_list ap)
{
  if (cpu != NULL)
    {
      if (TRACE_FILE (CPU_TRACE_DATA (cpu)) != NULL)
        vfprintf (TRACE_FILE (CPU_TRACE_DATA (cpu)), fmt, ap);
      else
        sim_io_evprintf (sd, fmt, ap);
    }
  else
    {
      if (TRACE_FILE (STATE_TRACE_DATA (sd)) != NULL)
        vfprintf (TRACE_FILE (STATE_TRACE_DATA (sd)), fmt, ap);
      else
        sim_io_evprintf (sd, fmt, ap);
    }
}
 
/* The function trace_one_insn has been replaced by the function pair
   trace_prefix() + trace_generic().  It is still used. */
void
trace_one_insn (SIM_DESC sd, sim_cpu *cpu, address_word pc,
                int line_p, const char *filename, int linenum,
                const char *phase_wo_colon, const char *fmt,
                ...)
{
  va_list ap;
  char phase[SIZE_PHASE+2];
 
  strncpy (phase, phase_wo_colon, SIZE_PHASE);
  strcat (phase, ":");
 
  if (!line_p)
    {
      trace_printf (sd, cpu, "%-*s %s:%-*d 0x%.*lx ",
                    SIZE_PHASE+1, phase,
                    filename,
                    SIZE_LINE_NUMBER, linenum,
                    SIZE_PC, (long)pc);
      va_start (ap, fmt);
      trace_vprintf (sd, cpu, fmt, ap);
      va_end (ap);
      trace_printf (sd, cpu, "\n");
    }
  else
    {
      char buf[256];
 
      buf[0] = 0;
      if (STATE_TEXT_SECTION (CPU_STATE (cpu))
          && pc >= STATE_TEXT_START (CPU_STATE (cpu))
          && pc < STATE_TEXT_END (CPU_STATE (cpu)))
        {
          const char *pc_filename = (const char *)0;
          const char *pc_function = (const char *)0;
          unsigned int pc_linenum = 0;
 
          if (bfd_find_nearest_line (STATE_PROG_BFD (CPU_STATE (cpu)),
                                     STATE_TEXT_SECTION (CPU_STATE (cpu)),
                                     (struct symbol_cache_entry **) 0,
                                     pc - STATE_TEXT_START (CPU_STATE (cpu)),
                                     &pc_filename, &pc_function, &pc_linenum))
            {
              char *p = buf;
              if (pc_linenum)
                {
                  sprintf (p, "#%-*d ", SIZE_LINE_NUMBER, pc_linenum);
                  p += strlen (p);
                }
              else
                {
                  sprintf (p, "%-*s ", SIZE_LINE_NUMBER+1, "---");
                  p += SIZE_LINE_NUMBER+2;
                }
 
              if (pc_function)
                {
                  sprintf (p, "%s ", pc_function);
                  p += strlen (p);
                }
              else if (pc_filename)
                {
                  char *q = (char *) strrchr (pc_filename, '/');
                  sprintf (p, "%s ", (q) ? q+1 : pc_filename);
                  p += strlen (p);
                }
 
              if (*p == ' ')
                *p = '\0';
            }
        }
 
      trace_printf (sd, cpu, "%-*s 0x%.*x %-*.*s ",
                    SIZE_PHASE+1, phase,
                    SIZE_PC, (unsigned) pc,
                    SIZE_LOCATION, SIZE_LOCATION, buf);
      va_start (ap, fmt);
      trace_vprintf (sd, cpu, fmt, ap);
      va_end (ap);
      trace_printf (sd, cpu, "\n");
    }
}
 
void
trace_printf VPARAMS ((SIM_DESC sd, sim_cpu *cpu, const char *fmt, ...))
{
#if !defined __STDC__ && !defined ALMOST_STDC
  SIM_DESC sd;
  sim_cpu *cpu;
  const char *fmt;
#endif
  va_list ap;
 
  VA_START (ap, fmt);
#if !defined __STDC__ && !defined ALMOST_STDC
  sd = va_arg (ap, SIM_DESC);
  cpu = va_arg (ap, sim_cpu *);
  fmt = va_arg (ap, const char *);
#endif
 
  trace_vprintf (sd, cpu, fmt, ap);
 
  va_end (ap);
}
 
void
debug_printf VPARAMS ((sim_cpu *cpu, const char *fmt, ...))
{
#if !defined __STDC__ && !defined ALMOST_STDC
  sim_cpu *cpu;
  const char *fmt;
#endif
  va_list ap;
 
  VA_START (ap, fmt);
#if !defined __STDC__ && !defined ALMOST_STDC
  cpu = va_arg (ap, sim_cpu *);
  fmt = va_arg (ap, const char *);
#endif
 
  if (CPU_DEBUG_FILE (cpu) == NULL)
    (* STATE_CALLBACK (CPU_STATE (cpu))->evprintf_filtered)
      (STATE_CALLBACK (CPU_STATE (cpu)), fmt, ap);
  else
    vfprintf (CPU_DEBUG_FILE (cpu), fmt, ap);
 
  va_end (ap);
}
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Line No.	Rev	Author	Line
1	106	markom	`/* Simulator tracing/debugging support.`
2			`Copyright (C) 1997, 1998 Free Software Foundation, Inc.`
3			`Contributed by Cygnus Support.`
4
5			`This file is part of GDB, the GNU debugger.`
6
7			`This program is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 2, or (at your option)`
10			`any later version.`
11
12			`This program is distributed in the hope that it will be useful,`
13			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`GNU General Public License for more details.`
16
17			`You should have received a copy of the GNU General Public License along`
18			`with this program; if not, write to the Free Software Foundation, Inc.,`
19			`59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */`
20
21			`#include "sim-main.h"`
22			`#include "sim-io.h"`
23			`#include "sim-options.h"`
24			`#include "sim-fpu.h"`
25
26			`#include "bfd.h"`
27			`#include "libiberty.h"`
28
29			`#include "sim-assert.h"`
30
31			`#ifdef HAVE_STRING_H`
32			`#include <string.h>`
33			`#else`
34			`#ifdef HAVE_STRINGS_H`
35			`#include <strings.h>`
36			`#endif`
37			`#endif`
38			`#ifdef HAVE_STDLIB_H`
39			`#include <stdlib.h>`
40			`#endif`