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dynamic.c
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dynamic.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <boolean.h>
#include <file/file_path.h>
#include <compat/strl.h>
#include <compat/posix_string.h>
#include <dynamic/dylib.h>
#include <string/stdstring.h>
#include <retro_assert.h>
#include <libretro.h>
#define VFS_FRONTEND
#include <vfs/vfs_implementation.h>
#include <features/features_cpu.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_CHEEVOS
#include "cheevos/cheevos.h"
#endif
#ifdef HAVE_NETWORKING
#include "network/netplay/netplay.h"
#endif
#include "dynamic.h"
#include "command.h"
#include "audio/audio_driver.h"
#include "camera/camera_driver.h"
#include "location/location_driver.h"
#include "record/record_driver.h"
#include "core.h"
#include "driver.h"
#include "performance_counters.h"
#include "gfx/video_driver.h"
#include "led/led_driver.h"
#include "cores/internal_cores.h"
#include "frontend/frontend_driver.h"
#include "content.h"
#include "dirs.h"
#include "paths.h"
#include "retroarch.h"
#include "configuration.h"
#include "msg_hash.h"
#include "verbosity.h"
#ifdef HAVE_RUNAHEAD
#include "runahead/secondary_core.h"
#include "runahead/run_ahead.h"
#endif
#ifdef HAVE_DYNAMIC
#define SYMBOL(x) do { \
function_t func = dylib_proc(lib_handle_local, #x); \
memcpy(¤t_core->x, &func, sizeof(func)); \
if (current_core->x == NULL) { RARCH_ERR("Failed to load symbol: \"%s\"\n", #x); retroarch_fail(1, "init_libretro_sym()"); } \
} while (0)
static dylib_t lib_handle;
#else
#define SYMBOL(x) current_core->x = x
#endif
#define SYMBOL_DUMMY(x) current_core->x = libretro_dummy_##x
#ifdef HAVE_FFMPEG
#define SYMBOL_FFMPEG(x) current_core->x = libretro_ffmpeg_##x
#endif
#ifdef HAVE_IMAGEVIEWER
#define SYMBOL_IMAGEVIEWER(x) current_core->x = libretro_imageviewer_##x
#endif
#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
#define SYMBOL_NETRETROPAD(x) current_core->x = libretro_netretropad_##x
#endif
#if defined(HAVE_VIDEO_PROCESSOR)
#define SYMBOL_VIDEOPROCESSOR(x) current_core->x = libretro_videoprocessor_##x
#endif
static bool ignore_environment_cb = false;
static bool core_set_shared_context = false;
static bool *load_no_content_hook = NULL;
const struct retro_subsystem_info *libretro_find_subsystem_info(
const struct retro_subsystem_info *info, unsigned num_info,
const char *ident)
{
unsigned i;
for (i = 0; i < num_info; i++)
{
if (string_is_equal(info[i].ident, ident))
return &info[i];
else if (string_is_equal(info[i].desc, ident))
return &info[i];
}
return NULL;
}
/**
* libretro_find_controller_description:
* @info : Pointer to controller info handle.
* @id : Identifier of controller to search
* for.
*
* Search for a controller of type @id in @info.
*
* Returns: controller description of found controller on success,
* otherwise NULL.
**/
const struct retro_controller_description *
libretro_find_controller_description(
const struct retro_controller_info *info, unsigned id)
{
unsigned i;
for (i = 0; i < info->num_types; i++)
{
if (info->types[i].id != id)
continue;
return &info->types[i];
}
return NULL;
}
/**
* libretro_free_system_info:
* @info : Pointer to system info information.
*
* Frees system information.
**/
void libretro_free_system_info(struct retro_system_info *info)
{
if (!info)
return;
free((void*)info->library_name);
free((void*)info->library_version);
free((void*)info->valid_extensions);
memset(info, 0, sizeof(*info));
}
static bool environ_cb_get_system_info(unsigned cmd, void *data)
{
switch (cmd)
{
case RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME:
*load_no_content_hook = *(const bool*)data;
break;
default:
return false;
}
return true;
}
#ifdef HAVE_DYNAMIC
/**
* libretro_get_environment_info:
* @func : Function pointer for get_environment_info.
* @load_no_content : If true, core should be able to auto-start
* without any content loaded.
*
* Sets environment callback in order to get statically known
* information from it.
*
* Fetched via environment callbacks instead of
* retro_get_system_info(), as this info is part of extensions.
*
* Should only be called once right after core load to
* avoid overwriting the "real" environ callback.
*
* For statically linked cores, pass retro_set_environment as argument.
*/
static void libretro_get_environment_info(void (*func)(retro_environment_t),
bool *load_no_content)
{
load_no_content_hook = load_no_content;
/* load_no_content gets set in this callback. */
func(environ_cb_get_system_info);
/* It's possible that we just set get_system_info callback
* to the currently running core.
*
* Make sure we reset it to the actual environment callback.
* Ignore any environment callbacks here in case we're running
* on the non-current core. */
ignore_environment_cb = true;
func(rarch_environment_cb);
ignore_environment_cb = false;
}
static bool load_dynamic_core(void)
{
function_t sym = dylib_proc(NULL, "retro_init");
if (sym)
{
/* Try to verify that -lretro was not linked in from other modules
* since loading it dynamically and with -l will fail hard. */
RARCH_ERR("Serious problem. RetroArch wants to load libretro cores"
" dynamically, but it is already linked.\n");
RARCH_ERR("This could happen if other modules RetroArch depends on "
"link against libretro directly.\n");
RARCH_ERR("Proceeding could cause a crash. Aborting ...\n");
retroarch_fail(1, "init_libretro_sym()");
}
if (string_is_empty(path_get(RARCH_PATH_CORE)))
{
RARCH_ERR("RetroArch is built for dynamic libretro cores, but "
"libretro_path is not set. Cannot continue.\n");
retroarch_fail(1, "init_libretro_sym()");
}
/* Need to use absolute path for this setting. It can be
* saved to content history, and a relative path would
* break in that scenario. */
path_resolve_realpath(
path_get_ptr(RARCH_PATH_CORE),
path_get_realsize(RARCH_PATH_CORE));
RARCH_LOG("Loading dynamic libretro core from: \"%s\"\n",
path_get(RARCH_PATH_CORE));
lib_handle = dylib_load(path_get(RARCH_PATH_CORE));
if (lib_handle)
return true;
RARCH_ERR("Failed to open libretro core: \"%s\"\n",
path_get(RARCH_PATH_CORE));
RARCH_ERR("Error(s): %s\n", dylib_error());
runloop_msg_queue_push(msg_hash_to_str(MSG_FAILED_TO_OPEN_LIBRETRO_CORE), 1, 180, true);
return false;
}
static dylib_t libretro_get_system_info_lib(const char *path,
struct retro_system_info *info, bool *load_no_content)
{
dylib_t lib = dylib_load(path);
void (*proc)(struct retro_system_info*);
if (!lib)
{
RARCH_ERR("%s: \"%s\"\n",
msg_hash_to_str(MSG_FAILED_TO_OPEN_LIBRETRO_CORE),
path);
RARCH_ERR("Error(s): %s\n", dylib_error());
return NULL;
}
proc = (void (*)(struct retro_system_info*))
dylib_proc(lib, "retro_get_system_info");
if (!proc)
{
dylib_close(lib);
return NULL;
}
proc(info);
if (load_no_content)
{
void (*set_environ)(retro_environment_t);
*load_no_content = false;
set_environ = (void (*)(retro_environment_t))
dylib_proc(lib, "retro_set_environment");
if (!set_environ)
return lib;
libretro_get_environment_info(set_environ, load_no_content);
}
return lib;
}
#endif
/**
* libretro_get_system_info:
* @path : Path to libretro library.
* @info : Pointer to system info information.
* @load_no_content : If true, core should be able to auto-start
* without any content loaded.
*
* Gets system info from an arbitrary lib.
* The struct returned must be freed as strings are allocated dynamically.
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool libretro_get_system_info(const char *path,
struct retro_system_info *info, bool *load_no_content)
{
struct retro_system_info dummy_info;
#ifdef HAVE_DYNAMIC
dylib_t lib;
#endif
dummy_info.library_name = NULL;
dummy_info.library_version = NULL;
dummy_info.valid_extensions = NULL;
dummy_info.need_fullpath = false;
dummy_info.block_extract = false;
#ifdef HAVE_DYNAMIC
lib = libretro_get_system_info_lib(
path, &dummy_info, load_no_content);
if (!lib)
return false;
#else
if (load_no_content)
{
load_no_content_hook = load_no_content;
/* load_no_content gets set in this callback. */
retro_set_environment(environ_cb_get_system_info);
/* It's possible that we just set get_system_info callback
* to the currently running core.
*
* Make sure we reset it to the actual environment callback.
* Ignore any environment callbacks here in case we're running
* on the non-current core. */
ignore_environment_cb = true;
retro_set_environment(rarch_environment_cb);
ignore_environment_cb = false;
}
retro_get_system_info(&dummy_info);
#endif
memcpy(info, &dummy_info, sizeof(*info));
if (!string_is_empty(dummy_info.library_name))
info->library_name = strdup(dummy_info.library_name);
if (!string_is_empty(dummy_info.library_version))
info->library_version = strdup(dummy_info.library_version);
if (dummy_info.valid_extensions)
info->valid_extensions = strdup(dummy_info.valid_extensions);
#ifdef HAVE_DYNAMIC
dylib_close(lib);
#endif
return true;
}
/**
* load_symbols:
* @type : Type of core to be loaded.
* If CORE_TYPE_DUMMY, will
* load dummy symbols.
*
* Setup libretro callback symbols. Returns true on success,
* or false if symbols could not be loaded.
**/
bool init_libretro_sym_custom(enum rarch_core_type type, struct retro_core_t *current_core, const char *lib_path, dylib_t *lib_handle_p)
{
/* the library handle for use with the SYMBOL macro */
dylib_t lib_handle_local;
switch (type)
{
case CORE_TYPE_PLAIN:
#ifdef HAVE_DYNAMIC
#ifdef HAVE_RUNAHEAD
if (!lib_path || !lib_handle_p)
#endif
{
if (!load_dynamic_core())
return false;
lib_handle_local = lib_handle;
}
#ifdef HAVE_RUNAHEAD
else
{
/* for a secondary core, we already have a
* primary library loaded, so we can skip
* some checks and just load the library */
retro_assert(lib_path != NULL && lib_handle_p != NULL);
lib_handle_local = dylib_load(lib_path);
if (!lib_handle_local)
return false;
*lib_handle_p = lib_handle_local;
}
#endif
#endif
SYMBOL(retro_init);
SYMBOL(retro_deinit);
SYMBOL(retro_api_version);
SYMBOL(retro_get_system_info);
SYMBOL(retro_get_system_av_info);
SYMBOL(retro_set_environment);
SYMBOL(retro_set_video_refresh);
SYMBOL(retro_set_audio_sample);
SYMBOL(retro_set_audio_sample_batch);
SYMBOL(retro_set_input_poll);
SYMBOL(retro_set_input_state);
SYMBOL(retro_set_controller_port_device);
SYMBOL(retro_reset);
SYMBOL(retro_run);
SYMBOL(retro_serialize_size);
SYMBOL(retro_serialize);
SYMBOL(retro_unserialize);
SYMBOL(retro_cheat_reset);
SYMBOL(retro_cheat_set);
SYMBOL(retro_load_game);
SYMBOL(retro_load_game_special);
SYMBOL(retro_unload_game);
SYMBOL(retro_get_region);
SYMBOL(retro_get_memory_data);
SYMBOL(retro_get_memory_size);
break;
case CORE_TYPE_DUMMY:
SYMBOL_DUMMY(retro_init);
SYMBOL_DUMMY(retro_deinit);
SYMBOL_DUMMY(retro_api_version);
SYMBOL_DUMMY(retro_get_system_info);
SYMBOL_DUMMY(retro_get_system_av_info);
SYMBOL_DUMMY(retro_set_environment);
SYMBOL_DUMMY(retro_set_video_refresh);
SYMBOL_DUMMY(retro_set_audio_sample);
SYMBOL_DUMMY(retro_set_audio_sample_batch);
SYMBOL_DUMMY(retro_set_input_poll);
SYMBOL_DUMMY(retro_set_input_state);
SYMBOL_DUMMY(retro_set_controller_port_device);
SYMBOL_DUMMY(retro_reset);
SYMBOL_DUMMY(retro_run);
SYMBOL_DUMMY(retro_serialize_size);
SYMBOL_DUMMY(retro_serialize);
SYMBOL_DUMMY(retro_unserialize);
SYMBOL_DUMMY(retro_cheat_reset);
SYMBOL_DUMMY(retro_cheat_set);
SYMBOL_DUMMY(retro_load_game);
SYMBOL_DUMMY(retro_load_game_special);
SYMBOL_DUMMY(retro_unload_game);
SYMBOL_DUMMY(retro_get_region);
SYMBOL_DUMMY(retro_get_memory_data);
SYMBOL_DUMMY(retro_get_memory_size);
break;
case CORE_TYPE_FFMPEG:
#ifdef HAVE_FFMPEG
SYMBOL_FFMPEG(retro_init);
SYMBOL_FFMPEG(retro_deinit);
SYMBOL_FFMPEG(retro_api_version);
SYMBOL_FFMPEG(retro_get_system_info);
SYMBOL_FFMPEG(retro_get_system_av_info);
SYMBOL_FFMPEG(retro_set_environment);
SYMBOL_FFMPEG(retro_set_video_refresh);
SYMBOL_FFMPEG(retro_set_audio_sample);
SYMBOL_FFMPEG(retro_set_audio_sample_batch);
SYMBOL_FFMPEG(retro_set_input_poll);
SYMBOL_FFMPEG(retro_set_input_state);
SYMBOL_FFMPEG(retro_set_controller_port_device);
SYMBOL_FFMPEG(retro_reset);
SYMBOL_FFMPEG(retro_run);
SYMBOL_FFMPEG(retro_serialize_size);
SYMBOL_FFMPEG(retro_serialize);
SYMBOL_FFMPEG(retro_unserialize);
SYMBOL_FFMPEG(retro_cheat_reset);
SYMBOL_FFMPEG(retro_cheat_set);
SYMBOL_FFMPEG(retro_load_game);
SYMBOL_FFMPEG(retro_load_game_special);
SYMBOL_FFMPEG(retro_unload_game);
SYMBOL_FFMPEG(retro_get_region);
SYMBOL_FFMPEG(retro_get_memory_data);
SYMBOL_FFMPEG(retro_get_memory_size);
#endif
break;
case CORE_TYPE_IMAGEVIEWER:
#ifdef HAVE_IMAGEVIEWER
SYMBOL_IMAGEVIEWER(retro_init);
SYMBOL_IMAGEVIEWER(retro_deinit);
SYMBOL_IMAGEVIEWER(retro_api_version);
SYMBOL_IMAGEVIEWER(retro_get_system_info);
SYMBOL_IMAGEVIEWER(retro_get_system_av_info);
SYMBOL_IMAGEVIEWER(retro_set_environment);
SYMBOL_IMAGEVIEWER(retro_set_video_refresh);
SYMBOL_IMAGEVIEWER(retro_set_audio_sample);
SYMBOL_IMAGEVIEWER(retro_set_audio_sample_batch);
SYMBOL_IMAGEVIEWER(retro_set_input_poll);
SYMBOL_IMAGEVIEWER(retro_set_input_state);
SYMBOL_IMAGEVIEWER(retro_set_controller_port_device);
SYMBOL_IMAGEVIEWER(retro_reset);
SYMBOL_IMAGEVIEWER(retro_run);
SYMBOL_IMAGEVIEWER(retro_serialize_size);
SYMBOL_IMAGEVIEWER(retro_serialize);
SYMBOL_IMAGEVIEWER(retro_unserialize);
SYMBOL_IMAGEVIEWER(retro_cheat_reset);
SYMBOL_IMAGEVIEWER(retro_cheat_set);
SYMBOL_IMAGEVIEWER(retro_load_game);
SYMBOL_IMAGEVIEWER(retro_load_game_special);
SYMBOL_IMAGEVIEWER(retro_unload_game);
SYMBOL_IMAGEVIEWER(retro_get_region);
SYMBOL_IMAGEVIEWER(retro_get_memory_data);
SYMBOL_IMAGEVIEWER(retro_get_memory_size);
#endif
break;
case CORE_TYPE_NETRETROPAD:
#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
SYMBOL_NETRETROPAD(retro_init);
SYMBOL_NETRETROPAD(retro_deinit);
SYMBOL_NETRETROPAD(retro_api_version);
SYMBOL_NETRETROPAD(retro_get_system_info);
SYMBOL_NETRETROPAD(retro_get_system_av_info);
SYMBOL_NETRETROPAD(retro_set_environment);
SYMBOL_NETRETROPAD(retro_set_video_refresh);
SYMBOL_NETRETROPAD(retro_set_audio_sample);
SYMBOL_NETRETROPAD(retro_set_audio_sample_batch);
SYMBOL_NETRETROPAD(retro_set_input_poll);
SYMBOL_NETRETROPAD(retro_set_input_state);
SYMBOL_NETRETROPAD(retro_set_controller_port_device);
SYMBOL_NETRETROPAD(retro_reset);
SYMBOL_NETRETROPAD(retro_run);
SYMBOL_NETRETROPAD(retro_serialize_size);
SYMBOL_NETRETROPAD(retro_serialize);
SYMBOL_NETRETROPAD(retro_unserialize);
SYMBOL_NETRETROPAD(retro_cheat_reset);
SYMBOL_NETRETROPAD(retro_cheat_set);
SYMBOL_NETRETROPAD(retro_load_game);
SYMBOL_NETRETROPAD(retro_load_game_special);
SYMBOL_NETRETROPAD(retro_unload_game);
SYMBOL_NETRETROPAD(retro_get_region);
SYMBOL_NETRETROPAD(retro_get_memory_data);
SYMBOL_NETRETROPAD(retro_get_memory_size);
#endif
break;
case CORE_TYPE_VIDEO_PROCESSOR:
#if defined(HAVE_VIDEO_PROCESSOR)
SYMBOL_VIDEOPROCESSOR(retro_init);
SYMBOL_VIDEOPROCESSOR(retro_deinit);
SYMBOL_VIDEOPROCESSOR(retro_api_version);
SYMBOL_VIDEOPROCESSOR(retro_get_system_info);
SYMBOL_VIDEOPROCESSOR(retro_get_system_av_info);
SYMBOL_VIDEOPROCESSOR(retro_set_environment);
SYMBOL_VIDEOPROCESSOR(retro_set_video_refresh);
SYMBOL_VIDEOPROCESSOR(retro_set_audio_sample);
SYMBOL_VIDEOPROCESSOR(retro_set_audio_sample_batch);
SYMBOL_VIDEOPROCESSOR(retro_set_input_poll);
SYMBOL_VIDEOPROCESSOR(retro_set_input_state);
SYMBOL_VIDEOPROCESSOR(retro_set_controller_port_device);
SYMBOL_VIDEOPROCESSOR(retro_reset);
SYMBOL_VIDEOPROCESSOR(retro_run);
SYMBOL_VIDEOPROCESSOR(retro_serialize_size);
SYMBOL_VIDEOPROCESSOR(retro_serialize);
SYMBOL_VIDEOPROCESSOR(retro_unserialize);
SYMBOL_VIDEOPROCESSOR(retro_cheat_reset);
SYMBOL_VIDEOPROCESSOR(retro_cheat_set);
SYMBOL_VIDEOPROCESSOR(retro_load_game);
SYMBOL_VIDEOPROCESSOR(retro_load_game_special);
SYMBOL_VIDEOPROCESSOR(retro_unload_game);
SYMBOL_VIDEOPROCESSOR(retro_get_region);
SYMBOL_VIDEOPROCESSOR(retro_get_memory_data);
SYMBOL_VIDEOPROCESSOR(retro_get_memory_size);
#endif
break;
}
return true;
}
static bool load_symbols(enum rarch_core_type type, struct retro_core_t *current_core)
{
return init_libretro_sym_custom(type, current_core, NULL, NULL);
}
/**
* init_libretro_sym:
* @type : Type of core to be loaded.
* If CORE_TYPE_DUMMY, will
* load dummy symbols.
*
* Initializes libretro symbols and
* setups environment callback functions. Returns true on success,
* or false if symbols could not be loaded.
**/
bool init_libretro_sym(enum rarch_core_type type, struct retro_core_t *current_core)
{
/* Guarantee that we can do "dirty" casting.
* Every OS that this program supports should pass this. */
retro_assert(sizeof(void*) == sizeof(void (*)(void)));
if (!load_symbols(type, current_core))
return false;
#ifdef HAVE_RUNAHEAD
/* remember last core type created, so creating a
* secondary core will know what core type to use. */
set_last_core_type(type);
#endif
return true;
}
bool libretro_get_shared_context(void)
{
return core_set_shared_context;
}
/**
* uninit_libretro_sym:
*
* Frees libretro core.
*
* Frees all core options,
* associated state, and
* unbind all libretro callback symbols.
**/
void uninit_libretro_sym(struct retro_core_t *current_core)
{
#ifdef HAVE_DYNAMIC
if (lib_handle)
dylib_close(lib_handle);
lib_handle = NULL;
#endif
memset(current_core, 0, sizeof(struct retro_core_t));
core_set_shared_context = false;
rarch_ctl(RARCH_CTL_CORE_OPTIONS_DEINIT, NULL);
rarch_ctl(RARCH_CTL_SYSTEM_INFO_FREE, NULL);
rarch_ctl(RARCH_CTL_FRAME_TIME_FREE, NULL);
camera_driver_ctl(RARCH_CAMERA_CTL_UNSET_ACTIVE, NULL);
location_driver_ctl(RARCH_LOCATION_CTL_UNSET_ACTIVE, NULL);
/* Performance counters no longer valid. */
performance_counters_clear();
}
static void rarch_log_libretro(enum retro_log_level level,
const char *fmt, ...)
{
va_list vp;
settings_t *settings = config_get_ptr();
if ((unsigned)level < settings->uints.libretro_log_level)
return;
if (!verbosity_is_enabled())
return;
va_start(vp, fmt);
switch (level)
{
case RETRO_LOG_DEBUG:
RARCH_LOG_V("[libretro DEBUG]", fmt, vp);
break;
case RETRO_LOG_INFO:
RARCH_LOG_OUTPUT_V("[libretro INFO]", fmt, vp);
break;
case RETRO_LOG_WARN:
RARCH_WARN_V("[libretro WARN]", fmt, vp);
break;
case RETRO_LOG_ERROR:
RARCH_ERR_V("[libretro ERROR]", fmt, vp);
break;
default:
break;
}
va_end(vp);
}
static size_t mmap_add_bits_down(size_t n)
{
n |= n >> 1;
n |= n >> 2;
n |= n >> 4;
n |= n >> 8;
n |= n >> 16;
/* double shift to avoid warnings on 32bit (it's dead code, but compilers suck) */
if (sizeof(size_t) > 4)
n |= n >> 16 >> 16;
return n;
}
static size_t mmap_inflate(size_t addr, size_t mask)
{
while (mask)
{
size_t tmp = (mask - 1) & ~mask;
/* to put in an 1 bit instead, OR in tmp+1 */
addr = ((addr & ~tmp) << 1) | (addr & tmp);
mask = mask & (mask - 1);
}
return addr;
}
static size_t mmap_reduce(size_t addr, size_t mask)
{
while (mask)
{
size_t tmp = (mask - 1) & ~mask;
addr = (addr & tmp) | ((addr >> 1) & ~tmp);
mask = (mask & (mask - 1)) >> 1;
}
return addr;
}
static size_t mmap_highest_bit(size_t n)
{
n = mmap_add_bits_down(n);
return n ^ (n >> 1);
}
static bool mmap_preprocess_descriptors(rarch_memory_descriptor_t *first, unsigned count)
{
size_t top_addr = 1;
rarch_memory_descriptor_t *desc = NULL;
const rarch_memory_descriptor_t *end = first + count;
for (desc = first; desc < end; desc++)
{
if (desc->core.select != 0)
top_addr |= desc->core.select;
else
top_addr |= desc->core.start + desc->core.len - 1;
}
top_addr = mmap_add_bits_down(top_addr);
for (desc = first; desc < end; desc++)
{
if (desc->core.select == 0)
{
if (desc->core.len == 0)
return false;
if ((desc->core.len & (desc->core.len - 1)) != 0)
return false;
desc->core.select = top_addr & ~mmap_inflate(mmap_add_bits_down(desc->core.len - 1),
desc->core.disconnect);
}
if (desc->core.len == 0)
desc->core.len = mmap_add_bits_down(mmap_reduce(top_addr & ~desc->core.select,
desc->core.disconnect)) + 1;
if (desc->core.start & ~desc->core.select)
return false;
while (mmap_reduce(top_addr & ~desc->core.select, desc->core.disconnect) >> 1 > desc->core.len - 1)
desc->core.disconnect |= mmap_highest_bit(top_addr & ~desc->core.select & ~desc->core.disconnect);
desc->disconnect_mask = mmap_add_bits_down(desc->core.len - 1);
desc->core.disconnect &= desc->disconnect_mask;
while ((~desc->disconnect_mask) >> 1 & desc->core.disconnect)
{
desc->disconnect_mask >>= 1;
desc->core.disconnect &= desc->disconnect_mask;
}
}
return true;
}
static bool dynamic_request_hw_context(enum retro_hw_context_type type,
unsigned minor, unsigned major)
{
switch (type)
{
case RETRO_HW_CONTEXT_NONE:
RARCH_LOG("Requesting no HW context.\n");
break;
case RETRO_HW_CONTEXT_VULKAN:
#ifdef HAVE_VULKAN
RARCH_LOG("Requesting Vulkan context.\n");
break;
#else
RARCH_ERR("Requesting Vulkan context, but RetroArch is not compiled against Vulkan. Cannot use HW context.\n");
return false;
#endif
#if defined(HAVE_OPENGLES)
#if (defined(HAVE_OPENGLES2) || defined(HAVE_OPENGLES3))
case RETRO_HW_CONTEXT_OPENGLES2:
case RETRO_HW_CONTEXT_OPENGLES3:
RARCH_LOG("Requesting OpenGLES%u context.\n",
type == RETRO_HW_CONTEXT_OPENGLES2 ? 2 : 3);
break;
#if defined(HAVE_OPENGLES3)
case RETRO_HW_CONTEXT_OPENGLES_VERSION:
RARCH_LOG("Requesting OpenGLES%u.%u context.\n",
major, minor);
break;
#endif
#endif
case RETRO_HW_CONTEXT_OPENGL:
case RETRO_HW_CONTEXT_OPENGL_CORE:
RARCH_ERR("Requesting OpenGL context, but RetroArch "
"is compiled against OpenGLES. Cannot use HW context.\n");
return false;
#elif defined(HAVE_OPENGL)
case RETRO_HW_CONTEXT_OPENGLES2:
case RETRO_HW_CONTEXT_OPENGLES3:
RARCH_ERR("Requesting OpenGLES%u context, but RetroArch "
"is compiled against OpenGL. Cannot use HW context.\n",
type == RETRO_HW_CONTEXT_OPENGLES2 ? 2 : 3);
return false;
case RETRO_HW_CONTEXT_OPENGLES_VERSION:
RARCH_ERR("Requesting OpenGLES%u.%u context, but RetroArch "
"is compiled against OpenGL. Cannot use HW context.\n",
major, minor);
return false;
case RETRO_HW_CONTEXT_OPENGL:
RARCH_LOG("Requesting OpenGL context.\n");
break;
case RETRO_HW_CONTEXT_OPENGL_CORE:
{
gfx_ctx_flags_t flags;
flags.flags = 0;
BIT32_SET(flags.flags, GFX_CTX_FLAGS_GL_CORE_CONTEXT);
video_context_driver_set_flags(&flags);
RARCH_LOG("Requesting core OpenGL context (%u.%u).\n",
major, minor);
}
break;
#endif
#if defined(HAVE_D3D9) || defined(HAVE_D3D11)
case RETRO_HW_CONTEXT_DIRECT3D:
switch (major)
{
#ifdef HAVE_D3D9
case 9:
RARCH_LOG("Requesting D3D9 context.\n");
break;
#endif
#ifdef HAVE_D3D11
case 11:
RARCH_LOG("Requesting D3D11 context.\n");
break;
#endif
default:
RARCH_LOG("Requesting unknown context.\n");
return false;
}
break;
#endif
default:
RARCH_LOG("Requesting unknown context.\n");
return false;
}
return true;
}
static bool dynamic_verify_hw_context(enum retro_hw_context_type type,
unsigned minor, unsigned major)
{
const char *video_ident = video_driver_get_ident();
switch (type)
{
case RETRO_HW_CONTEXT_VULKAN:
if (!string_is_equal(video_ident, "vulkan"))
return false;
break;
case RETRO_HW_CONTEXT_OPENGLES2:
case RETRO_HW_CONTEXT_OPENGLES3:
case RETRO_HW_CONTEXT_OPENGLES_VERSION:
case RETRO_HW_CONTEXT_OPENGL:
case RETRO_HW_CONTEXT_OPENGL_CORE:
if (!string_is_equal(video_ident, "gl"))
return false;
break;
case RETRO_HW_CONTEXT_DIRECT3D:
if (!(string_is_equal(video_ident, "d3d11") && major == 11))
return false;
break;
default:
break;
}
return true;
}
static void core_performance_counter_start(struct retro_perf_counter *perf)
{
if (rarch_ctl(RARCH_CTL_IS_PERFCNT_ENABLE, NULL))
{
perf->call_cnt++;
perf->start = cpu_features_get_perf_counter();
}
}
static void core_performance_counter_stop(struct retro_perf_counter *perf)
{
if (rarch_ctl(RARCH_CTL_IS_PERFCNT_ENABLE, NULL))
perf->total += cpu_features_get_perf_counter() - perf->start;
}
/**
* rarch_environment_cb: