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plugin.cc
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plugin.cc
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/////////////////////////////////////////////////////////////////////////
// $Id: plugin.cc 14214 2021-04-03 18:26:03Z vruppert $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002-2021 The Bochs Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
//
// This file defines the plugin and plugin-device registration functions and
// the device registration functions. It handles dynamic loading of modules,
// using the LTDL library for cross-platform support.
//
// This file is based on the plugin.c file from plex86, but with significant
// changes to make it work in Bochs.
// Plex86 is Copyright (C) 1999-2000 The plex86 developers team
//
/////////////////////////////////////////////////////////////////////////
#include "bochs.h"
#include "iodev/iodev.h"
#include "plugin.h"
#ifndef WIN32
#include <dirent.h> /* opendir, readdir */
#include <locale.h> /* setlocale */
#endif
#define LOG_THIS genlog->
#define PLUGIN_ENTRY_FMT_STRING "lib%s_plugin_entry"
#define GUI_PLUGIN_ENTRY_FMT_STRING "lib%s_gui_plugin_entry"
#define IMG_PLUGIN_ENTRY_FMT_STRING "lib%s_img_plugin_entry"
#define NET_PLUGIN_ENTRY_FMT_STRING "libeth_%s_plugin_entry"
#define SND_PLUGIN_ENTRY_FMT_STRING "libsound%s_plugin_entry"
#define PLUGIN_PATH ""
#ifndef WIN32
#define PLUGIN_FILENAME_FORMAT "libbx_%s.so"
#define GUI_PLUGIN_FILENAME_FORMAT "libbx_%s_gui.so"
#define IMG_PLUGIN_FILENAME_FORMAT "libbx_%s_img.so"
#define NET_PLUGIN_FILENAME_FORMAT "libbx_eth_%s.so"
#define SND_PLUGIN_FILENAME_FORMAT "libbx_sound%s.so"
#else
#define PLUGIN_FILENAME_FORMAT "bx_%s.dll"
#define GUI_PLUGIN_FILENAME_FORMAT "bx_%s_gui.dll"
#define IMG_PLUGIN_FILENAME_FORMAT "bx_%s_img.dll"
#define NET_PLUGIN_FILENAME_FORMAT "bx_eth_%s.dll"
#define SND_PLUGIN_FILENAME_FORMAT "bx_sound%s.dll"
#endif
logfunctions *pluginlog;
extern "C" {
void (*pluginRegisterIRQ)(unsigned irq, const char* name) = 0;
void (*pluginUnregisterIRQ)(unsigned irq, const char* name) = 0;
void (*pluginSetHRQ)(unsigned val) = 0;
void (*pluginSetHRQHackCallback)(void (*callback)(void)) = 0;
int (*pluginRegisterIOReadHandler)(void *thisPtr, ioReadHandler_t callback,
unsigned base, const char *name, Bit8u mask) = 0;
int (*pluginRegisterIOWriteHandler)(void *thisPtr, ioWriteHandler_t callback,
unsigned base, const char *name, Bit8u mask) = 0;
int (*pluginUnregisterIOReadHandler)(void *thisPtr, ioReadHandler_t callback,
unsigned base, Bit8u mask) = 0;
int (*pluginUnregisterIOWriteHandler)(void *thisPtr, ioWriteHandler_t callback,
unsigned base, Bit8u mask) = 0;
int (*pluginRegisterIOReadHandlerRange)(void *thisPtr, ioReadHandler_t callback,
unsigned base, unsigned end, const char *name, Bit8u mask) = 0;
int (*pluginRegisterIOWriteHandlerRange)(void *thisPtr, ioWriteHandler_t callback,
unsigned base, unsigned end, const char *name, Bit8u mask) = 0;
int (*pluginUnregisterIOReadHandlerRange)(void *thisPtr, ioReadHandler_t callback,
unsigned begin, unsigned end, Bit8u mask) = 0;
int (*pluginUnregisterIOWriteHandlerRange)(void *thisPtr, ioWriteHandler_t callback,
unsigned begin, unsigned end, Bit8u mask) = 0;
int (*pluginRegisterDefaultIOReadHandler)(void *thisPtr, ioReadHandler_t callback,
const char *name, Bit8u mask) = 0;
int (*pluginRegisterDefaultIOWriteHandler)(void *thisPtr, ioWriteHandler_t callback,
const char *name, Bit8u mask) = 0;
void (*pluginHRQHackCallback)(void);
unsigned pluginHRQ = 0;
plugin_t *plugins = NULL; /* Head of the linked list of plugins */
device_t *devices = NULL; /* Head of the linked list of registered devices */
device_t *core_devices = NULL; /* Head of the linked list of registered core devices */
plugin_t *current_plugin_context = NULL;
/************************************************************************/
/* Builtins declarations */
/************************************************************************/
static void
builtinRegisterIRQ(unsigned irq, const char* name)
{
bx_devices.register_irq(irq, name);
}
static void
builtinUnregisterIRQ(unsigned irq, const char* name)
{
bx_devices.unregister_irq(irq, name);
}
static void
builtinSetHRQ(unsigned val)
{
pluginHRQ = val;
}
static void
builtinSetHRQHackCallback(void (*callback)(void))
{
pluginHRQHackCallback = callback;
}
static int
builtinRegisterIOReadHandler(void *thisPtr, ioReadHandler_t callback,
unsigned base, const char *name, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.register_io_read_handler (thisPtr, callback, base, name, mask);
pluginlog->ldebug("plugin %s registered I/O read address at %04x", name, base);
return ret;
}
static int
builtinRegisterIOWriteHandler(void *thisPtr, ioWriteHandler_t callback,
unsigned base, const char *name, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.register_io_write_handler (thisPtr, callback, base, name, mask);
pluginlog->ldebug("plugin %s registered I/O write address at %04x", name, base);
return ret;
}
static int
builtinUnregisterIOReadHandler(void *thisPtr, ioReadHandler_t callback,
unsigned base, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.unregister_io_read_handler (thisPtr, callback, base, mask);
pluginlog->ldebug("plugin unregistered I/O read address at %04x", base);
return ret;
}
static int
builtinUnregisterIOWriteHandler(void *thisPtr, ioWriteHandler_t callback,
unsigned base, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.unregister_io_write_handler (thisPtr, callback, base, mask);
pluginlog->ldebug("plugin unregistered I/O write address at %04x", base);
return ret;
}
static int
builtinRegisterIOReadHandlerRange(void *thisPtr, ioReadHandler_t callback,
unsigned base, unsigned end, const char *name, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.register_io_read_handler_range (thisPtr, callback, base, end, name, mask);
pluginlog->ldebug("plugin %s registered I/O read addresses %04x to %04x", name, base, end);
return ret;
}
static int
builtinRegisterIOWriteHandlerRange(void *thisPtr, ioWriteHandler_t callback,
unsigned base, unsigned end, const char *name, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.register_io_write_handler_range (thisPtr, callback, base, end, name, mask);
pluginlog->ldebug("plugin %s registered I/O write addresses %04x to %04x", name, base, end);
return ret;
}
static int
builtinUnregisterIOReadHandlerRange(void *thisPtr, ioReadHandler_t callback,
unsigned begin, unsigned end, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.unregister_io_read_handler_range (thisPtr, callback, begin, end, mask);
pluginlog->ldebug("plugin unregistered I/O read addresses %04x to %04x", begin, end);
return ret;
}
static int
builtinUnregisterIOWriteHandlerRange(void *thisPtr, ioWriteHandler_t callback,
unsigned begin, unsigned end, Bit8u mask)
{
int ret;
BX_ASSERT(mask<8);
ret = bx_devices.unregister_io_write_handler_range (thisPtr, callback, begin, end, mask);
pluginlog->ldebug("plugin unregistered I/O write addresses %04x to %04x", begin, end);
return ret;
}
static int
builtinRegisterDefaultIOReadHandler(void *thisPtr, ioReadHandler_t callback,
const char *name, Bit8u mask)
{
BX_ASSERT(mask<8);
bx_devices.register_default_io_read_handler (thisPtr, callback, name, mask);
pluginlog->ldebug("plugin %s registered default I/O read ", name);
return 0;
}
static int
builtinRegisterDefaultIOWriteHandler(void *thisPtr, ioWriteHandler_t callback,
const char *name, Bit8u mask)
{
BX_ASSERT(mask<8);
bx_devices.register_default_io_write_handler (thisPtr, callback, name, mask);
pluginlog->ldebug("plugin %s registered default I/O write ", name);
return 0;
}
#if BX_PLUGINS
/************************************************************************/
/* Search for all available plugins */
/************************************************************************/
void plugin_add_entry(char *pgn_name, Bit16u type, Bit8u flags)
{
plugin_t *plugin, *temp;
if ((type & PLUGTYPE_GUI) > 0) {
if (!strncmp(pgn_name + strlen(pgn_name) - 4, "_gui", 4)) {
pgn_name[strlen(pgn_name) - 4] = 0;
}
} else if (type == PLUGTYPE_IMG) {
if (!strncmp(pgn_name + strlen(pgn_name) - 4, "_img", 4)) {
pgn_name[strlen(pgn_name) - 4] = 0;
}
} else if (type == PLUGTYPE_NET) {
if (!strncmp(pgn_name, "eth_", 4)) {
memmove(pgn_name, pgn_name + 4, strlen(pgn_name) - 3);
}
} else if (type == PLUGTYPE_SND) {
if (!strncmp(pgn_name, "sound", 5)) {
memmove(pgn_name, pgn_name + 5, strlen(pgn_name) - 4);
}
}
plugin = new plugin_t;
plugin->type = type;
plugin->flags = flags;
plugin->name = pgn_name;
plugin->loadtype = PLUGTYPE_NULL;
plugin->initialized = 0;
/* Insert plugin at the _end_ of the plugin linked list. */
plugin->next = NULL;
if (plugins == NULL) {
/* Empty list, this become the first entry. */
plugins = plugin;
} else {
/* Non-empty list. Add to end. */
temp = plugins;
while (temp->next)
temp = temp->next;
temp->next = plugin;
}
}
void plugins_search(void)
{
int nlen, flen1, flen2;
char *fmtptr, *ltdl_path_var, *pgn_name, *pgn_path, *ptr;
char fmtstr[32];
#ifndef WIN32
const char *path_sep = ":";
DIR *dir;
struct dirent *dent;
lt_dlhandle handle;
#else
const char *path_sep = ";";
WIN32_FIND_DATA finddata;
HANDLE hFind;
char filter[MAX_PATH];
char path[MAX_PATH];
HINSTANCE handle;
#endif
char tmpname[BX_PATHNAME_LEN];
plugin_entry_t plugin_entry;
Bit16u type;
Bit8u flags;
#ifndef WIN32
setlocale(LC_ALL, "en_US");
#endif
ltdl_path_var = getenv("LTDL_LIBRARY_PATH");
sprintf(fmtstr, PLUGIN_FILENAME_FORMAT, "*");
fmtptr = strchr(fmtstr, '*');
flen1 = fmtptr - fmtstr;
flen2 = strlen(fmtstr) - flen1 - 1;
if (ltdl_path_var != NULL) {
pgn_path = new char[strlen(ltdl_path_var) + 1];
strcpy(pgn_path, ltdl_path_var);
} else {
pgn_path = new char[2];
strcpy(pgn_path, ".");
}
ptr = strtok(pgn_path, path_sep);
while (ptr != NULL) {
#ifndef WIN32
dir = opendir(ptr);
if (dir != NULL) {
while ((dent=readdir(dir)) != NULL) {
nlen = strlen(dent->d_name);
if ((!strncmp(dent->d_name, fmtstr, flen1)) &&
(!strcmp(dent->d_name + nlen - flen2, fmtptr + 1))) {
pgn_name = new char[nlen - flen1 - flen2 + 1];
strncpy(pgn_name, dent->d_name + flen1, nlen - flen1 - flen2);
pgn_name[nlen - flen1 - flen2] = 0;
handle = lt_dlopen(dent->d_name);
if (handle) {
sprintf(tmpname, PLUGIN_ENTRY_FMT_STRING, pgn_name);
plugin_entry = (plugin_entry_t) lt_dlsym(handle, tmpname);
if (plugin_entry != NULL) {
type = (Bit16u) plugin_entry(NULL, PLUGTYPE_NULL, PLUGIN_PROBE);
flags = (Bit8u) plugin_entry(NULL, PLUGTYPE_NULL, PLUGIN_FLAGS);
plugin_add_entry(pgn_name, type, flags);
}
lt_dlclose(handle);
} else {
delete [] pgn_name;
}
}
}
closedir(dir);
}
#else
sprintf(filter, "%s\\*.dll", ptr);
hFind = FindFirstFile(filter, &finddata);
if (hFind != INVALID_HANDLE_VALUE) {
do {
nlen = lstrlen(finddata.cFileName);
if ((!strncmp(finddata.cFileName, fmtstr, flen1)) &&
(!strcmp(finddata.cFileName + nlen - flen2, fmtptr + 1))) {
pgn_name = new char[nlen - flen1 - flen2 + 1];
strncpy(pgn_name, finddata.cFileName + flen1, nlen - flen1 - flen2);
pgn_name[nlen - flen1 - flen2] = 0;
sprintf(path, "%s\\%s", ptr, finddata.cFileName);
handle = LoadLibrary(path);
if (handle) {
sprintf(tmpname, PLUGIN_ENTRY_FMT_STRING, pgn_name);
plugin_entry = (plugin_entry_t) GetProcAddress(handle, tmpname);
if (plugin_entry != NULL) {
type = (Bit16u) plugin_entry(NULL, PLUGTYPE_NULL, PLUGIN_PROBE);
flags = (Bit8u) plugin_entry(NULL, PLUGTYPE_NULL, PLUGIN_FLAGS);
plugin_add_entry(pgn_name, type, flags);
}
FreeLibrary(handle);
}
}
} while (FindNextFile(hFind, &finddata));
FindClose(hFind);
}
#endif
ptr = strtok(NULL, ":");
}
delete [] pgn_path;
}
Bit8u bx_get_plugins_count(Bit16u type)
{
plugin_t *temp;
Bit8u count = 0;
if (plugins != NULL) {
temp = plugins;
while (temp != NULL) {
if ((type & temp->type) != 0)
count++;
temp = temp->next;
}
}
return count;
}
const char* bx_get_plugin_name(Bit16u type, Bit8u index)
{
plugin_t *temp;
int count = 0;
if (plugins != NULL) {
temp = plugins;
while (temp != NULL) {
if ((type & temp->type) != 0) {
if (count == index)
return temp->name;
count++;
}
temp = temp->next;
}
}
return NULL;
}
Bit8u bx_get_plugin_flags(Bit16u type, Bit8u index)
{
plugin_t *temp;
int count = 0;
if (plugins != NULL) {
temp = plugins;
while (temp != NULL) {
if ((type & temp->type) != 0) {
if (count == index)
return temp->flags;
count++;
}
temp = temp->next;
}
}
return 0;
}
/************************************************************************/
/* Plugin initialization / deinitialization */
/************************************************************************/
bool plugin_init_one(plugin_t *plugin)
{
/* initialize the plugin */
if (plugin->plugin_entry(plugin, plugin->loadtype, PLUGIN_INIT))
{
pluginlog->info("Plugin initialization failed for %s", plugin->name);
plugin_abort(plugin);
return 0;
}
plugin->initialized = 1;
return 1;
}
bool plugin_unload(plugin_t *plugin)
{
if (plugin->loadtype != PLUGTYPE_NULL) {
if (plugin->initialized)
plugin->plugin_entry(plugin, plugin->type, PLUGIN_FINI);
#if defined(WIN32)
FreeLibrary(plugin->handle);
#else
lt_dlclose(plugin->handle);
#endif
plugin->loadtype = PLUGTYPE_NULL;
return 1;
} else {
return 0;
}
}
bool plugin_load(const char *name, Bit16u type)
{
plugin_t *plugin = NULL, *temp;
#if defined(WIN32)
char dll_path_list[MAX_PATH];
#endif
if (plugins != NULL) {
temp = plugins;
while (temp != NULL) {
if (!strcmp(name, temp->name) && ((type & temp->type) != 0)) {
if (temp->loadtype != PLUGTYPE_NULL) {
BX_PANIC(("plugin '%s' already loaded", name));
return 0;
} else {
plugin = temp;
break;
}
}
temp = temp->next;
}
}
if (plugin == NULL) {
BX_PANIC(("plugin '%s' not found", name));
return 0;
}
char plugin_filename[BX_PATHNAME_LEN], tmpname[BX_PATHNAME_LEN];
if (type == PLUGTYPE_GUI) {
sprintf(tmpname, GUI_PLUGIN_FILENAME_FORMAT, name);
} else if (type == PLUGTYPE_IMG) {
sprintf(tmpname, IMG_PLUGIN_FILENAME_FORMAT, name);
} else if (type == PLUGTYPE_NET) {
sprintf(tmpname, NET_PLUGIN_FILENAME_FORMAT, name);
} else if (type == PLUGTYPE_SND) {
sprintf(tmpname, SND_PLUGIN_FILENAME_FORMAT, name);
} else {
sprintf(tmpname, PLUGIN_FILENAME_FORMAT, name);
}
sprintf(plugin_filename, "%s%s", PLUGIN_PATH, tmpname);
// Set context so that any devices that the plugin registers will
// be able to see which plugin created them. The registration will
// be called from either dlopen (global constructors) or plugin_entry.
BX_ASSERT(current_plugin_context == NULL);
current_plugin_context = plugin;
#if defined(WIN32)
char *ptr;
plugin->handle = LoadLibrary(plugin_filename);
if (!plugin->handle) {
if (GetEnvironmentVariable("LTDL_LIBRARY_PATH", dll_path_list, MAX_PATH)) {
ptr = strtok(dll_path_list, ";");
while ((ptr) && !plugin->handle) {
sprintf(plugin_filename, "%s\\%s", ptr, tmpname);
plugin->handle = LoadLibrary(plugin_filename);
ptr = strtok(NULL, ";");
}
}
}
BX_INFO(("DLL handle is %p", plugin->handle));
if (!plugin->handle) {
current_plugin_context = NULL;
BX_PANIC(("LoadLibrary failed for module '%s' (%s): error=%d", name,
plugin_filename, GetLastError()));
return 0;
}
#else
plugin->handle = lt_dlopen(plugin_filename);
BX_INFO(("lt_dlhandle is %p", plugin->handle));
if (!plugin->handle) {
current_plugin_context = NULL;
BX_PANIC(("dlopen failed for module '%s' (%s): %s", name, plugin_filename,
lt_dlerror()));
return 0;
}
#endif
plugin->loadtype = type;
if (type == PLUGTYPE_GUI) {
sprintf(tmpname, GUI_PLUGIN_ENTRY_FMT_STRING, name);
} else if (type == PLUGTYPE_IMG) {
sprintf(tmpname, IMG_PLUGIN_ENTRY_FMT_STRING, name);
} else if (type == PLUGTYPE_NET) {
sprintf(tmpname, NET_PLUGIN_ENTRY_FMT_STRING, name);
} else if (type == PLUGTYPE_SND) {
sprintf(tmpname, SND_PLUGIN_ENTRY_FMT_STRING, name);
} else {
sprintf(tmpname, PLUGIN_ENTRY_FMT_STRING, name);
}
#if defined(WIN32)
plugin->plugin_entry = (plugin_entry_t) GetProcAddress(plugin->handle, tmpname);
if (plugin->plugin_entry == NULL) {
pluginlog->panic("could not find plugin_entry for module '%s' (%s): error=%d",
name, plugin_filename, GetLastError());
plugin_abort(plugin);
return 0;
}
#else
plugin->plugin_entry = (plugin_entry_t) lt_dlsym(plugin->handle, tmpname);
if (plugin->plugin_entry == NULL) {
pluginlog->panic("could not find plugin_entry for module '%s' (%s): %s",
name, plugin_filename, lt_dlerror());
plugin_abort(plugin);
return 0;
}
#endif
pluginlog->info("loaded plugin %s",plugin_filename);
if (!plugin_init_one(plugin)) {
return 0;
}
// check that context didn't change. This should only happen if we
// need a reentrant plugin_load.
BX_ASSERT(current_plugin_context == plugin);
current_plugin_context = NULL;
return 1;
}
void plugin_abort(plugin_t *plugin)
{
plugin_unload(plugin);
pluginlog->panic("loading plugin '%s' aborted", plugin->name);
}
#endif /* end of #if BX_PLUGINS */
/************************************************************************/
/* Plugin system: initialisation of plugins entry points */
/************************************************************************/
void plugin_startup(void)
{
pluginRegisterIRQ = builtinRegisterIRQ;
pluginUnregisterIRQ = builtinUnregisterIRQ;
pluginSetHRQHackCallback = builtinSetHRQHackCallback;
pluginSetHRQ = builtinSetHRQ;
pluginRegisterIOReadHandler = builtinRegisterIOReadHandler;
pluginRegisterIOWriteHandler = builtinRegisterIOWriteHandler;
pluginUnregisterIOReadHandler = builtinUnregisterIOReadHandler;
pluginUnregisterIOWriteHandler = builtinUnregisterIOWriteHandler;
pluginRegisterIOReadHandlerRange = builtinRegisterIOReadHandlerRange;
pluginRegisterIOWriteHandlerRange = builtinRegisterIOWriteHandlerRange;
pluginUnregisterIOReadHandlerRange = builtinUnregisterIOReadHandlerRange;
pluginUnregisterIOWriteHandlerRange = builtinUnregisterIOWriteHandlerRange;
pluginRegisterDefaultIOReadHandler = builtinRegisterDefaultIOReadHandler;
pluginRegisterDefaultIOWriteHandler = builtinRegisterDefaultIOWriteHandler;
pluginlog = new logfunctions();
pluginlog->put("PLUGIN");
#if BX_PLUGINS
#if !defined(WIN32)
int status = lt_dlinit();
if (status != 0) {
BX_ERROR(("initialization error in ltdl library (for loading plugins)"));
BX_PANIC(("error message was: %s", lt_dlerror()));
}
#endif
plugins_search();
#endif
}
void plugin_cleanup(void)
{
#if BX_PLUGINS
plugin_t *dead_plug;
while (plugins != NULL) {
if (plugins->loadtype != PLUGTYPE_NULL) {
plugin_unload(plugins);
}
delete [] plugins->name;
dead_plug = plugins;
plugins = plugins->next;
delete dead_plug;
}
#endif
}
/************************************************************************/
/* Plugin system: Device registration */
/************************************************************************/
void pluginRegisterDeviceDevmodel(plugin_t *plugin, Bit16u type, bx_devmodel_c *devmodel, const char *name)
{
device_t **devlist;
device_t *device = new device_t;
device->name = name;
BX_ASSERT(devmodel != NULL);
device->devmodel = devmodel;
device->plugin = plugin; // this can be NULL
device->next = NULL;
device->plugtype = type;
switch (type) {
case PLUGTYPE_CORE:
case PLUGTYPE_VGA:
devlist = &core_devices;
break;
case PLUGTYPE_STANDARD:
case PLUGTYPE_OPTIONAL:
default:
devlist = &devices;
break;
}
if (!*devlist) {
/* Empty list, this become the first entry. */
*devlist = device;
} else {
/* Non-empty list. Add to end. */
device_t *temp = *devlist;
while (temp->next)
temp = temp->next;
temp->next = device;
}
}
/************************************************************************/
/* Plugin system: Remove registered plugin device */
/************************************************************************/
void pluginUnregisterDeviceDevmodel(const char *name, Bit16u type)
{
device_t **devlist;
device_t *device, *prev = NULL;
switch (type) {
case PLUGTYPE_CORE:
case PLUGTYPE_VGA:
devlist = &core_devices;
break;
case PLUGTYPE_STANDARD:
case PLUGTYPE_OPTIONAL:
default:
devlist = &devices;
break;
}
for (device = *devlist; device; device = device->next) {
if (!strcmp(name, device->name)) {
if (prev == NULL) {
*devlist = device->next;
} else {
prev->next = device->next;
}
delete device;
break;
} else {
prev = device;
}
}
}
/************************************************************************/
/* Plugin system: Check if a plugin is loaded */
/************************************************************************/
bool pluginDevicePresent(const char *name)
{
device_t *device;
for (device = devices; device; device = device->next)
{
if (!strcmp(name, device->name)) return 1;
}
return 0;
}
#if BX_PLUGINS
/************************************************************************/
/* Plugin system: Load one plugin */
/************************************************************************/
bool bx_load_plugin(const char *name, Bit16u type)
{
plugin_t *plugin;
if (!strcmp(name, "*")) {
for (plugin = plugins; plugin; plugin = plugin->next) {
if (((type & plugin->type) != 0) && (plugin->loadtype == PLUGTYPE_NULL)) {
plugin_load(plugin->name, type);
}
}
return 1;
} else {
return plugin_load(name, type);
}
}
bool bx_unload_plugin(const char *name, bool devflag)
{
plugin_t *plugin;
bool ret = 0;
for (plugin = plugins; plugin; plugin = plugin->next) {
if (!strcmp(plugin->name, name)) {
if (devflag) {
pluginUnregisterDeviceDevmodel(plugin->name, plugin->type);
}
ret = plugin_unload(plugin);
break;
}
}
return ret;
}
void bx_unload_plugin_type(const char *name, Bit16u type)
{
plugin_t *plugin;
for (plugin = plugins; plugin; plugin = plugin->next) {
if (!strcmp(plugin->name, name) && ((plugin->type & type) != 0)) {
plugin_unload(plugin);
break;
}
}
}
#endif /* end of #if BX_PLUGINS */
/*************************************************************************/
/* Plugin system: Execute init function of all registered plugin-devices */
/*************************************************************************/
void bx_init_plugins()
{
device_t *device;
for (device = core_devices; device; device = device->next) {
pluginlog->info("init_dev of '%s' plugin device by virtual method",device->name);
device->devmodel->init();
}
for (device = devices; device; device = device->next) {
if (device->plugtype == PLUGTYPE_STANDARD) {
pluginlog->info("init_dev of '%s' plugin device by virtual method",device->name);
device->devmodel->init();
}
}
for (device = devices; device; device = device->next) {
if (device->plugtype == PLUGTYPE_OPTIONAL) {
pluginlog->info("init_dev of '%s' plugin device by virtual method",device->name);
device->devmodel->init();
}
}
}
/**************************************************************************/
/* Plugin system: Execute reset function of all registered plugin-devices */
/**************************************************************************/
void bx_reset_plugins(unsigned signal)
{
device_t *device;
for (device = core_devices; device; device = device->next) {
pluginlog->info("reset of '%s' plugin device by virtual method",device->name);
device->devmodel->reset(signal);
}
for (device = devices; device; device = device->next) {
if (device->plugtype == PLUGTYPE_STANDARD) {
pluginlog->info("reset of '%s' plugin device by virtual method",device->name);
device->devmodel->reset(signal);
}
}
for (device = devices; device; device = device->next) {
if (device->plugtype == PLUGTYPE_OPTIONAL) {
pluginlog->info("reset of '%s' plugin device by virtual method",device->name);
device->devmodel->reset(signal);
}
}
}
/*******************************************************/
/* Plugin system: Unload all registered plugin-devices */
/*******************************************************/
void bx_unload_plugins()
{
device_t *device, *next;
// unload non-core plugins first
device = devices;
while (device != NULL) {
if (device->plugin != NULL) {
#if BX_PLUGINS
bx_unload_plugin(device->name, 0);
#endif
} else {
#if !BX_PLUGINS
if (!bx_unload_opt_plugin(device->name, 0)) {
delete device->devmodel;
}
#endif
}
next = device->next;
delete device;
device = next;
}
devices = NULL;
// now it's safe to unload core plugins
device = core_devices;
while (device != NULL) {
if (device->plugin != NULL) {
#if BX_PLUGINS
bx_unload_plugin(device->name, 0);
#endif
} else {
delete device->devmodel;
}
next = device->next;
delete device;
device = next;
}
core_devices = NULL;
}
/**************************************************************************/
/* Plugin system: Register device state of all registered plugin-devices */
/**************************************************************************/
void bx_plugins_register_state()
{
device_t *device;
for (device = core_devices; device; device = device->next) {
pluginlog->info("register state of '%s' plugin device by virtual method",device->name);
device->devmodel->register_state();
}
for (device = devices; device; device = device->next) {
pluginlog->info("register state of '%s' plugin device by virtual method",device->name);
device->devmodel->register_state();
}
}
/***************************************************************************/
/* Plugin system: Execute code after restoring state of all plugin devices */
/***************************************************************************/
void bx_plugins_after_restore_state()
{
device_t *device;
for (device = core_devices; device; device = device->next) {
device->devmodel->after_restore_state();
}
for (device = devices; device; device = device->next) {
if (device->plugtype == PLUGTYPE_STANDARD) {
device->devmodel->after_restore_state();
}
}
for (device = devices; device; device = device->next) {
if (device->plugtype == PLUGTYPE_OPTIONAL) {
device->devmodel->after_restore_state();
}
}
}
#if !BX_PLUGINS
// Special code for handling modules when plugin support is turned off.
#define BUILTIN_OPT_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_OPTIONAL, 0, lib##mod##_plugin_entry, 0}
#define BUILTIN_OPTPCI_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_OPTIONAL, PLUGFLAG_PCI, lib##mod##_plugin_entry, 0}
#define BUILTIN_VGA_PLUGIN_ENTRY(mod, t, f) {#mod, PLUGTYPE_VGA | t, f, lib##mod##_plugin_entry, 0}
#define BUILTIN_CI_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_CI, 0, lib##mod##_plugin_entry, 0}
#define BUILTIN_GUI_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_GUI, 0, lib##mod##_gui_plugin_entry, 0}
#define BUILTIN_GUICI_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_GUI | PLUGTYPE_CI, 0, lib##mod##_gui_plugin_entry, 0}
#define BUILTIN_IMG_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_IMG, 0, lib##mod##_img_plugin_entry, 0}
#define BUILTIN_NET_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_NET, 0, libeth_##mod##_plugin_entry, 0}
#define BUILTIN_SND_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_SND, 0, libsound##mod##_plugin_entry, 0}
#define BUILTIN_USB_PLUGIN_ENTRY(mod) {#mod, PLUGTYPE_USB, 0, lib##mod##_plugin_entry, 0}
plugin_t bx_builtin_plugins[] = {
#if BX_USE_TEXTCONFIG
BUILTIN_CI_PLUGIN_ENTRY(textconfig),
#endif
#if BX_USE_WIN32CONFIG
BUILTIN_CI_PLUGIN_ENTRY(win32config),
#endif
#if BX_WITH_AMIGAOS
BUILTIN_GUI_PLUGIN_ENTRY(amigaos),
#endif
#if BX_WITH_CARBON
BUILTIN_GUI_PLUGIN_ENTRY(carbon),
#endif
#if BX_WITH_MACOS
BUILTIN_GUI_PLUGIN_ENTRY(macos),
#endif
#if BX_WITH_NOGUI
BUILTIN_GUI_PLUGIN_ENTRY(nogui),
#endif
#if BX_WITH_RFB
BUILTIN_GUI_PLUGIN_ENTRY(rfb),
#endif
#if BX_WITH_SDL
BUILTIN_GUI_PLUGIN_ENTRY(sdl),
#endif
#if BX_WITH_SDL2
BUILTIN_GUI_PLUGIN_ENTRY(sdl2),
#endif
#if BX_WITH_TERM
BUILTIN_GUI_PLUGIN_ENTRY(term),
#endif