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/* Module support.
Copyright 1996-2023 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 3 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, see <http://www.gnu.org/licenses/>. */
/* This must come before any other includes. */
#include "defs.h"
#include <stdlib.h>
#include "libiberty.h"
#include "sim-main.h"
#include "sim-io.h"
#include "sim-options.h"
#include "sim-assert.h"
/* List of all early/core modules.
TODO: Should trim this list by converting to sim_install_* framework. */
static MODULE_INSTALL_FN * const early_modules[] = {
standard_install,
sim_events_install,
sim_model_install,
sim_core_install,
sim_memopt_install,
sim_watchpoint_install,
};
static int early_modules_len = ARRAY_SIZE (early_modules);
/* List of dynamically detected modules. Declared in generated modules.c. */
extern MODULE_INSTALL_FN * const sim_modules_detected[];
extern const int sim_modules_detected_len;
/* Functions called from sim_open. */
/* Initialize common parts before argument processing. */
SIM_RC
sim_pre_argv_init (SIM_DESC sd, const char *myname)
{
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) == NULL);
STATE_MY_NAME (sd) = lbasename (myname);
/* Set the cpu names to default values. */
{
int i;
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
char *name;
if (asprintf (&name, "cpu%d", i) < 0)
return SIM_RC_FAIL;
CPU_NAME (STATE_CPU (sd, i)) = name;
}
}
sim_config_default (sd);
/* Install all early configured-in modules. */
if (sim_module_install (sd) != SIM_RC_OK)
return SIM_RC_FAIL;
/* Install all remaining dynamically detected modules. */
return sim_module_install_list (sd, sim_modules_detected,
sim_modules_detected_len);
}
/* Initialize common parts after argument processing. */
SIM_RC
sim_post_argv_init (SIM_DESC sd)
{
int i;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
/* Set the cpu->state backlinks for each cpu. */
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
CPU_STATE (STATE_CPU (sd, i)) = sd;
CPU_INDEX (STATE_CPU (sd, i)) = i;
}
if (sim_module_init (sd) != SIM_RC_OK)
return SIM_RC_FAIL;
return SIM_RC_OK;
}
/* Install a list of modules.
If this fails, no modules are left installed. */
SIM_RC
sim_module_install_list (SIM_DESC sd, MODULE_INSTALL_FN * const *modules,
size_t modules_len)
{
size_t i;
for (i = 0; i < modules_len; ++i)
{
MODULE_INSTALL_FN *modp = modules[i];
if (modp != NULL && modp (sd) != SIM_RC_OK)
{
sim_module_uninstall (sd);
SIM_ASSERT (STATE_MODULES (sd) == NULL);
return SIM_RC_FAIL;
}
}
return SIM_RC_OK;
}
/* Install all modules.
If this fails, no modules are left installed. */
SIM_RC
sim_module_install (SIM_DESC sd)
{
MODULE_INSTALL_FN * const *modp;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) == NULL);
STATE_MODULES (sd) = ZALLOC (struct module_list);
return sim_module_install_list (sd, early_modules, early_modules_len);
}
/* Called after all modules have been installed and after argv
has been processed. */
SIM_RC
sim_module_init (SIM_DESC sd)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_INIT_LIST *modp;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
for (modp = modules->init_list; modp != NULL; modp = modp->next)
{
if ((*modp->fn) (sd) != SIM_RC_OK)
return SIM_RC_FAIL;
}
return SIM_RC_OK;
}
/* Called when ever the simulator is resumed */
SIM_RC
sim_module_resume (SIM_DESC sd)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_RESUME_LIST *modp;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
for (modp = modules->resume_list; modp != NULL; modp = modp->next)
{
if ((*modp->fn) (sd) != SIM_RC_OK)
return SIM_RC_FAIL;
}
return SIM_RC_OK;
}
/* Called when ever the simulator is suspended */
SIM_RC
sim_module_suspend (SIM_DESC sd)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_SUSPEND_LIST *modp;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
for (modp = modules->suspend_list; modp != NULL; modp = modp->next)
{
if ((*modp->fn) (sd) != SIM_RC_OK)
return SIM_RC_FAIL;
}
return SIM_RC_OK;
}
/* Uninstall installed modules, called by sim_close. */
void
sim_module_uninstall (SIM_DESC sd)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_UNINSTALL_LIST *modp;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
/* Uninstall the modules. */
for (modp = modules->uninstall_list; modp != NULL; modp = modp->next)
(*modp->fn) (sd);
/* clean-up init list */
{
MODULE_INIT_LIST *n, *d;
for (d = modules->init_list; d != NULL; d = n)
{
n = d->next;
free (d);
}
}
/* clean-up resume list */
{
MODULE_RESUME_LIST *n, *d;
for (d = modules->resume_list; d != NULL; d = n)
{
n = d->next;
free (d);
}
}
/* clean-up suspend list */
{
MODULE_SUSPEND_LIST *n, *d;
for (d = modules->suspend_list; d != NULL; d = n)
{
n = d->next;
free (d);
}
}
/* clean-up uninstall list */
{
MODULE_UNINSTALL_LIST *n, *d;
for (d = modules->uninstall_list; d != NULL; d = n)
{
n = d->next;
free (d);
}
}
/* clean-up info list */
{
MODULE_INFO_LIST *n, *d;
for (d = modules->info_list; d != NULL; d = n)
{
n = d->next;
free (d);
}
}
free (modules);
STATE_MODULES (sd) = NULL;
}
/* Called when ever simulator info is needed */
void
sim_module_info (SIM_DESC sd, int verbose)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_INFO_LIST *modp;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
for (modp = modules->info_list; modp != NULL; modp = modp->next)
{
(*modp->fn) (sd, verbose);
}
}
/* Add FN to the init handler list.
init in the same order as the install. */
void
sim_module_add_init_fn (SIM_DESC sd, MODULE_INIT_FN fn)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_INIT_LIST *l = ZALLOC (MODULE_INIT_LIST);
MODULE_INIT_LIST **last;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
last = &modules->init_list;
while (*last != NULL)
last = &((*last)->next);
l->fn = fn;
l->next = NULL;
*last = l;
}
/* Add FN to the resume handler list.
resume in the same order as the install. */
void
sim_module_add_resume_fn (SIM_DESC sd, MODULE_RESUME_FN fn)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_RESUME_LIST *l = ZALLOC (MODULE_RESUME_LIST);
MODULE_RESUME_LIST **last;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
last = &modules->resume_list;
while (*last != NULL)
last = &((*last)->next);
l->fn = fn;
l->next = NULL;
*last = l;
}
/* Add FN to the init handler list.
suspend in the reverse order to install. */
void
sim_module_add_suspend_fn (SIM_DESC sd, MODULE_SUSPEND_FN fn)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_SUSPEND_LIST *l = ZALLOC (MODULE_SUSPEND_LIST);
MODULE_SUSPEND_LIST **last;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
last = &modules->suspend_list;
while (*last != NULL)
last = &((*last)->next);
l->fn = fn;
l->next = modules->suspend_list;
modules->suspend_list = l;
}
/* Add FN to the uninstall handler list.
Uninstall in reverse order to install. */
void
sim_module_add_uninstall_fn (SIM_DESC sd, MODULE_UNINSTALL_FN fn)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_UNINSTALL_LIST *l = ZALLOC (MODULE_UNINSTALL_LIST);
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
l->fn = fn;
l->next = modules->uninstall_list;
modules->uninstall_list = l;
}
/* Add FN to the info handler list.
Report info in the same order as the install. */
void
sim_module_add_info_fn (SIM_DESC sd, MODULE_INFO_FN fn)
{
struct module_list *modules = STATE_MODULES (sd);
MODULE_INFO_LIST *l = ZALLOC (MODULE_INFO_LIST);
MODULE_INFO_LIST **last;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
SIM_ASSERT (STATE_MODULES (sd) != NULL);
last = &modules->info_list;
while (*last != NULL)
last = &((*last)->next);
l->fn = fn;
l->next = NULL;
*last = l;
}
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