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143 lines
3.7 KiB
C
143 lines
3.7 KiB
C
/* SSNES - A Super Ninteno Entertainment System (SNES) Emulator frontend for libsnes.
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* Copyright (C) 2010 - Hans-Kristian Arntzen
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*
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* Some code herein may be based on code found in BSNES.
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*
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* SSNES is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with SSNES.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "dynamic.h"
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#include "general.h"
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#include <string.h>
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#include "config.h"
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#ifdef HAVE_DYNAMIC
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#include <dlfcn.h>
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#define SYM(x) do { \
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p##x = dlsym(lib_handle, #x); \
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if (p##x == NULL) { SSNES_ERR("Failed to load symbol: \"%s\"\n", #x); exit(1); } \
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} while(0)
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#endif
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#ifdef HAVE_DYNAMIC
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static void *lib_handle = NULL;
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#endif
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void (*psnes_init)(void);
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void (*psnes_set_video_refresh)(snes_video_refresh_t);
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void (*psnes_set_audio_sample)(snes_audio_sample_t);
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void (*psnes_set_input_poll)(snes_input_poll_t);
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void (*psnes_set_input_state)(snes_input_state_t);
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void (*psnes_run)(void);
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unsigned (*psnes_library_revision_minor)(void);
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unsigned (*psnes_library_revision_major)(void);
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bool (*psnes_load_cartridge_normal)(const char*, const uint8_t*, unsigned);
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unsigned (*psnes_serialize_size)(void);
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bool (*psnes_serialize)(uint8_t*, unsigned);
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bool (*psnes_unserialize)(const uint8_t*, unsigned);
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void (*psnes_set_cartridge_basename)(const char*);
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uint8_t* (*psnes_get_memory_data)(unsigned);
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unsigned (*psnes_get_memory_size)(unsigned);
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void (*psnes_unload_cartridge)(void);
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void (*psnes_term)(void);
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#ifdef HAVE_DYNAMIC
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static void load_dynamic(void)
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{
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SSNES_LOG("Loading dynamic libsnes from: \"%s\"\n", g_settings.libsnes);
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lib_handle = dlopen(g_settings.libsnes, RTLD_LAZY);
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if (!lib_handle)
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{
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SSNES_ERR("Failed to open dynamic library: \"%s\"\n", g_settings.libsnes);
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exit(1);
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}
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SYM(snes_init);
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SYM(snes_set_video_refresh);
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SYM(snes_set_audio_sample);
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SYM(snes_set_input_poll);
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SYM(snes_set_input_state);
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SYM(snes_library_revision_minor);
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SYM(snes_library_revision_major);
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SYM(snes_run);
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SYM(snes_load_cartridge_normal);
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SYM(snes_serialize_size);
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SYM(snes_serialize);
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SYM(snes_unserialize);
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SYM(snes_set_cartridge_basename);
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SYM(snes_get_memory_data);
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SYM(snes_get_memory_size);
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SYM(snes_unload_cartridge);
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SYM(snes_term);
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}
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#endif
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#define SSYM(x) do { \
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p##x = x; \
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} while(0)
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#ifndef HAVE_DYNAMIC
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static void set_statics(void)
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{
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SSYM(snes_init);
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SSYM(snes_set_video_refresh);
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SSYM(snes_set_audio_sample);
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SSYM(snes_set_input_poll);
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SSYM(snes_set_input_state);
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SSYM(snes_library_revision_minor);
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SSYM(snes_library_revision_major);
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SSYM(snes_run);
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SSYM(snes_load_cartridge_normal);
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SSYM(snes_serialize_size);
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SSYM(snes_serialize);
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SSYM(snes_unserialize);
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SSYM(snes_set_cartridge_basename);
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SSYM(snes_get_memory_data);
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SSYM(snes_get_memory_size);
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SSYM(snes_unload_cartridge);
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SSYM(snes_term);
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}
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#endif
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void init_dlsym(void)
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{
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#ifdef HAVE_DYNAMIC
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if (strlen(g_settings.libsnes) > 0)
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load_dynamic();
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else
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{
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SSNES_ERR("This binary is built to use runtime dynamic binding of libsnes. Set libsnes_path in config to load a libsnes library dynamically.\n");
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exit(1);
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}
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#else
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set_statics();
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#endif
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}
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void uninit_dlsym(void)
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{
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#ifdef HAVE_DYNAMIC
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if (lib_handle)
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dlclose(lib_handle);
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#endif
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}
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