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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /sim/common/sim-utils.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'sim/common/sim-utils.c')
-rw-r--r--sim/common/sim-utils.c285
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diff --git a/sim/common/sim-utils.c b/sim/common/sim-utils.c
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-/* 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. */
- for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
- CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd;
- }
-#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;
-}
-
-/* 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 a prog_name/prog_bfd and set various fields in the state
- struct. */
-
-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;
- }
-
- 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 (prefered) 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);
-}