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/* Xtensa configuration settings loader.
Copyright (C) 2022-2023 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
GCC 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, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#define XTENSA_CONFIG_DEFINITION
#include "xtensa-config.h"
#include "xtensa-dynconfig.h"
#if defined (HAVE_DLFCN_H)
#include <dlfcn.h>
#elif defined (HAVE_WINDOWS_H)
#include <windows.h>
#endif
#if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H)
#define RTLD_LAZY 0 /* Dummy value. */
static void *
dlopen (const char *file, int mode ATTRIBUTE_UNUSED)
{
return LoadLibrary (file);
}
static void *
dlsym (void *handle, const char *name)
{
return (void *) GetProcAddress ((HMODULE) handle, name);
}
static int ATTRIBUTE_UNUSED
dlclose (void *handle)
{
FreeLibrary ((HMODULE) handle);
return 0;
}
static const char *
dlerror (void)
{
return _("Unable to load DLL.");
}
#endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) */
#define CONFIG_ENV_NAME "XTENSA_GNU_CONFIG"
const void *xtensa_load_config (const char *name ATTRIBUTE_UNUSED,
const void *no_plugin_def,
const void *no_name_def ATTRIBUTE_UNUSED)
{
static int init;
#if BFD_SUPPORTS_PLUGINS
static void *handle;
void *p;
if (!init)
{
const char *path = getenv (CONFIG_ENV_NAME);
init = 1;
if (!path)
return no_plugin_def;
handle = dlopen (path, RTLD_LAZY);
if (!handle)
{
_bfd_error_handler (_("%s is defined but could not be loaded: %s"),
CONFIG_ENV_NAME, dlerror ());
abort ();
}
}
else if (!handle)
{
return no_plugin_def;
}
p = dlsym (handle, name);
if (!p)
{
if (no_name_def)
return no_name_def;
_bfd_error_handler (_("%s is loaded but symbol \"%s\" is not found: %s"),
CONFIG_ENV_NAME, name, dlerror ());
abort ();
}
return p;
#else
if (!init)
{
const char *path = getenv (CONFIG_ENV_NAME);
init = 1;
if (path)
{
_bfd_error_handler (_("%s is defined but plugin support is disabled"),
CONFIG_ENV_NAME);
abort ();
}
}
return no_plugin_def;
#endif
}
XTENSA_CONFIG_INSTANCE_LIST;
const struct xtensa_config_v1 *xtensa_get_config_v1 (void)
{
static const struct xtensa_config_v1 *config;
if (!config)
config = (const struct xtensa_config_v1 *) xtensa_load_config ("xtensa_config_v1",
&xtensa_config_v1,
NULL);
return config;
}
const struct xtensa_config_v2 *xtensa_get_config_v2 (void)
{
static const struct xtensa_config_v2 *config;
static const struct xtensa_config_v2 def;
if (!config)
config = (const struct xtensa_config_v2 *) xtensa_load_config ("xtensa_config_v2",
&xtensa_config_v2,
&def);
return config;
}
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