414 lines
9.4 KiB
C
414 lines
9.4 KiB
C
/* Miscellaneous simulator utilities.
|
||
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-assert.h"
|
||
|
||
#ifdef HAVE_STDLIB_H
|
||
#include <stdlib.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_TIME_H
|
||
#include <time.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_SYS_TIME_H
|
||
#include <sys/time.h> /* needed by sys/resource.h */
|
||
#endif
|
||
|
||
#ifdef HAVE_SYS_RESOURCE_H
|
||
#include <sys/resource.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_STRING_H
|
||
#include <string.h>
|
||
#else
|
||
#ifdef HAVE_STRINGS_H
|
||
#include <strings.h>
|
||
#endif
|
||
#endif
|
||
|
||
#include "libiberty.h"
|
||
#include "bfd.h"
|
||
#include "sim-utils.h"
|
||
|
||
/* Global pointer to all state data.
|
||
Set by sim_resume. */
|
||
struct sim_state *current_state;
|
||
|
||
/* Allocate zero filled memory with xmalloc - xmalloc aborts of the
|
||
allocation fails. */
|
||
|
||
void *
|
||
zalloc (unsigned long size)
|
||
{
|
||
void *memory = (void *) xmalloc (size);
|
||
memset (memory, 0, size);
|
||
return memory;
|
||
}
|
||
|
||
void
|
||
zfree (void *data)
|
||
{
|
||
free (data);
|
||
}
|
||
|
||
/* Allocate a sim_state struct. */
|
||
|
||
SIM_DESC
|
||
sim_state_alloc (SIM_OPEN_KIND kind,
|
||
host_callback *callback)
|
||
{
|
||
SIM_DESC sd = ZALLOC (struct sim_state);
|
||
|
||
STATE_MAGIC (sd) = SIM_MAGIC_NUMBER;
|
||
STATE_CALLBACK (sd) = callback;
|
||
STATE_OPEN_KIND (sd) = kind;
|
||
|
||
#if 0
|
||
{
|
||
int cpu_nr;
|
||
|
||
/* Initialize the back link from the cpu struct to the state struct. */
|
||
/* ??? I can envision a design where the state struct contains an array
|
||
of pointers to cpu structs, rather than an array of structs themselves.
|
||
Implementing this is trickier as one may not know what to allocate until
|
||
one has parsed the args. Parsing the args twice wouldn't be unreasonable,
|
||
IMHO. If the state struct ever does contain an array of pointers then we
|
||
can't do this here.
|
||
??? See also sim_post_argv_init*/
|
||
for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
|
||
{
|
||
CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd;
|
||
CPU_INDEX (STATE_CPU (sd, cpu_nr)) = cpu_nr;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
#ifdef SIM_STATE_INIT
|
||
SIM_STATE_INIT (sd);
|
||
#endif
|
||
|
||
return sd;
|
||
}
|
||
|
||
/* Free a sim_state struct. */
|
||
|
||
void
|
||
sim_state_free (SIM_DESC sd)
|
||
{
|
||
ASSERT (sd->base.magic == SIM_MAGIC_NUMBER);
|
||
|
||
#ifdef SIM_STATE_FREE
|
||
SIM_STATE_FREE (sd);
|
||
#endif
|
||
|
||
zfree (sd);
|
||
}
|
||
|
||
/* Return a pointer to the cpu data for CPU_NAME, or NULL if not found. */
|
||
|
||
sim_cpu *
|
||
sim_cpu_lookup (SIM_DESC sd, const char *cpu_name)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
|
||
if (strcmp (cpu_name, CPU_NAME (STATE_CPU (sd, i))) == 0)
|
||
return STATE_CPU (sd, i);
|
||
return NULL;
|
||
}
|
||
|
||
/* Return the prefix to use for a CPU specific message (typically an
|
||
error message). */
|
||
|
||
const char *
|
||
sim_cpu_msg_prefix (sim_cpu *cpu)
|
||
{
|
||
#if MAX_NR_PROCESSORS == 1
|
||
return "";
|
||
#else
|
||
static char *prefix;
|
||
|
||
if (prefix == NULL)
|
||
{
|
||
int maxlen = 0;
|
||
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
|
||
{
|
||
int len = strlen (CPU_NAME (STATE_CPU (sd, i)));
|
||
if (len > maxlen)
|
||
maxlen = len;
|
||
}
|
||
prefix = (char *) xmalloc (maxlen + 5);
|
||
}
|
||
sprintf (prefix, "%s: ", CPU_NAME (cpu));
|
||
return prefix;
|
||
#endif
|
||
}
|
||
|
||
/* Cover fn to sim_io_eprintf. */
|
||
|
||
void
|
||
sim_io_eprintf_cpu (sim_cpu *cpu, const char *fmt, ...)
|
||
{
|
||
SIM_DESC sd = CPU_STATE (cpu);
|
||
va_list ap;
|
||
|
||
va_start (ap, fmt);
|
||
sim_io_eprintf (sd, sim_cpu_msg_prefix (cpu));
|
||
sim_io_evprintf (sd, fmt, ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Turn VALUE into a string with commas. */
|
||
|
||
char *
|
||
sim_add_commas (char *buf, int sizeof_buf, unsigned long value)
|
||
{
|
||
int comma = 3;
|
||
char *endbuf = buf + sizeof_buf - 1;
|
||
|
||
*--endbuf = '\0';
|
||
do {
|
||
if (comma-- == 0)
|
||
{
|
||
*--endbuf = ',';
|
||
comma = 2;
|
||
}
|
||
|
||
*--endbuf = (value % 10) + '0';
|
||
} while ((value /= 10) != 0);
|
||
|
||
return endbuf;
|
||
}
|
||
|
||
/* Analyze PROG_NAME/PROG_BFD and set these fields in the state struct:
|
||
STATE_ARCHITECTURE, if not set already and can be determined from the bfd
|
||
STATE_PROG_BFD
|
||
STATE_START_ADDR
|
||
STATE_TEXT_SECTION
|
||
STATE_TEXT_START
|
||
STATE_TEXT_END
|
||
|
||
PROG_NAME is the file name of the executable or NULL.
|
||
PROG_BFD is its bfd or NULL.
|
||
|
||
If both PROG_NAME and PROG_BFD are NULL, this function returns immediately.
|
||
If PROG_BFD is not NULL, PROG_NAME is ignored.
|
||
|
||
Implicit inputs: STATE_MY_NAME(sd), STATE_TARGET(sd),
|
||
STATE_ARCHITECTURE(sd).
|
||
|
||
A new bfd is created so the app isn't required to keep its copy of the
|
||
bfd open. */
|
||
|
||
SIM_RC
|
||
sim_analyze_program (sd, prog_name, prog_bfd)
|
||
SIM_DESC sd;
|
||
char *prog_name;
|
||
bfd *prog_bfd;
|
||
{
|
||
asection *s;
|
||
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
|
||
|
||
if (prog_bfd != NULL)
|
||
{
|
||
if (prog_bfd == STATE_PROG_BFD (sd))
|
||
/* already analyzed */
|
||
return SIM_RC_OK;
|
||
else
|
||
/* duplicate needed, save the name of the file to be re-opened */
|
||
prog_name = bfd_get_filename (prog_bfd);
|
||
}
|
||
|
||
/* do we need to duplicate anything? */
|
||
if (prog_name == NULL)
|
||
return SIM_RC_OK;
|
||
|
||
/* open a new copy of the prog_bfd */
|
||
prog_bfd = bfd_openr (prog_name, STATE_TARGET (sd));
|
||
if (prog_bfd == NULL)
|
||
{
|
||
sim_io_eprintf (sd, "%s: can't open \"%s\": %s\n",
|
||
STATE_MY_NAME (sd),
|
||
prog_name,
|
||
bfd_errmsg (bfd_get_error ()));
|
||
return SIM_RC_FAIL;
|
||
}
|
||
if (!bfd_check_format (prog_bfd, bfd_object))
|
||
{
|
||
sim_io_eprintf (sd, "%s: \"%s\" is not an object file: %s\n",
|
||
STATE_MY_NAME (sd),
|
||
prog_name,
|
||
bfd_errmsg (bfd_get_error ()));
|
||
bfd_close (prog_bfd);
|
||
return SIM_RC_FAIL;
|
||
}
|
||
if (STATE_ARCHITECTURE (sd) != NULL)
|
||
bfd_set_arch_info (prog_bfd, STATE_ARCHITECTURE (sd));
|
||
else
|
||
{
|
||
if (bfd_get_arch (prog_bfd) != bfd_arch_unknown
|
||
&& bfd_get_arch (prog_bfd) != bfd_arch_obscure)
|
||
{
|
||
STATE_ARCHITECTURE (sd) = bfd_get_arch_info (prog_bfd);
|
||
}
|
||
}
|
||
|
||
/* update the sim structure */
|
||
if (STATE_PROG_BFD (sd) != NULL)
|
||
bfd_close (STATE_PROG_BFD (sd));
|
||
STATE_PROG_BFD (sd) = prog_bfd;
|
||
STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd);
|
||
|
||
for (s = prog_bfd->sections; s; s = s->next)
|
||
if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0)
|
||
{
|
||
STATE_TEXT_SECTION (sd) = s;
|
||
STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s);
|
||
STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s);
|
||
break;
|
||
}
|
||
|
||
bfd_cache_close (prog_bfd);
|
||
|
||
return SIM_RC_OK;
|
||
}
|
||
|
||
/* Simulator timing support. */
|
||
|
||
/* Called before sim_elapsed_time_since to get a reference point. */
|
||
|
||
SIM_ELAPSED_TIME
|
||
sim_elapsed_time_get ()
|
||
{
|
||
#ifdef HAVE_GETRUSAGE
|
||
struct rusage mytime;
|
||
if (getrusage (RUSAGE_SELF, &mytime) == 0)
|
||
return 1 + (SIM_ELAPSED_TIME) (((double) mytime.ru_utime.tv_sec * 1000) + (((double) mytime.ru_utime.tv_usec + 500) / 1000));
|
||
return 1;
|
||
#else
|
||
#ifdef HAVE_TIME
|
||
return 1 + (SIM_ELAPSED_TIME) time ((time_t) 0);
|
||
#else
|
||
return 1;
|
||
#endif
|
||
#endif
|
||
}
|
||
|
||
/* Return the elapsed time in milliseconds since START.
|
||
The actual time may be cpu usage (preferred) or wall clock. */
|
||
|
||
unsigned long
|
||
sim_elapsed_time_since (start)
|
||
SIM_ELAPSED_TIME start;
|
||
{
|
||
#ifdef HAVE_GETRUSAGE
|
||
return sim_elapsed_time_get () - start;
|
||
#else
|
||
#ifdef HAVE_TIME
|
||
return (sim_elapsed_time_get () - start) * 1000;
|
||
#else
|
||
return 0;
|
||
#endif
|
||
#endif
|
||
}
|
||
|
||
|
||
|
||
/* do_command but with printf style formatting of the arguments */
|
||
void
|
||
sim_do_commandf (SIM_DESC sd,
|
||
const char *fmt,
|
||
...)
|
||
{
|
||
va_list ap;
|
||
char *buf;
|
||
va_start (ap, fmt);
|
||
vasprintf (&buf, fmt, ap);
|
||
sim_do_command (sd, buf);
|
||
va_end (ap);
|
||
free (buf);
|
||
}
|
||
|
||
|
||
/* sim-basics.h defines a number of enumerations, convert each of them
|
||
to a string representation */
|
||
const char *
|
||
map_to_str (unsigned map)
|
||
{
|
||
switch (map)
|
||
{
|
||
case read_map: return "read";
|
||
case write_map: return "write";
|
||
case exec_map: return "exec";
|
||
case io_map: return "io";
|
||
default:
|
||
{
|
||
static char str[10];
|
||
sprintf (str, "(%ld)", (long) map);
|
||
return str;
|
||
}
|
||
}
|
||
}
|
||
|
||
const char *
|
||
access_to_str (unsigned access)
|
||
{
|
||
switch (access)
|
||
{
|
||
case access_invalid: return "invalid";
|
||
case access_read: return "read";
|
||
case access_write: return "write";
|
||
case access_exec: return "exec";
|
||
case access_io: return "io";
|
||
case access_read_write: return "read_write";
|
||
case access_read_exec: return "read_exec";
|
||
case access_write_exec: return "write_exec";
|
||
case access_read_write_exec: return "read_write_exec";
|
||
case access_read_io: return "read_io";
|
||
case access_write_io: return "write_io";
|
||
case access_read_write_io: return "read_write_io";
|
||
case access_exec_io: return "exec_io";
|
||
case access_read_exec_io: return "read_exec_io";
|
||
case access_write_exec_io: return "write_exec_io";
|
||
case access_read_write_exec_io: return "read_write_exec_io";
|
||
default:
|
||
{
|
||
static char str[10];
|
||
sprintf (str, "(%ld)", (long) access);
|
||
return str;
|
||
}
|
||
}
|
||
}
|
||
|
||
const char *
|
||
transfer_to_str (unsigned transfer)
|
||
{
|
||
switch (transfer)
|
||
{
|
||
case read_transfer: return "read";
|
||
case write_transfer: return "write";
|
||
default: return "(error)";
|
||
}
|
||
}
|
||
|
||
|