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os.c
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os.c
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/*
* This file is part of the Advance project.
*
* Copyright (C) 2001, 2002, 2003 Andrea Mazzoleni
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* In addition, as a special exception, Andrea Mazzoleni
* gives permission to link the code of this program with
* the MAME library (or with modified versions of MAME that use the
* same license as MAME), and distribute linked combinations including
* the two. You must obey the GNU General Public License in all
* respects for all of the code used other than MAME. If you modify
* this file, you may extend this exception to your version of the
* file, but you are not obligated to do so. If you do not wish to
* do so, delete this exception statement from your version.
*/
#include "portable.h"
#include "os.h"
#include "oslinux.h"
#include "log.h"
#include "target.h"
#include "file.h"
#include "snstring.h"
#include "measure.h"
#if defined(USE_SDL)
#include "ossdl.h"
#include "SDL.h"
#include "ksdl.h"
#include "isdl.h"
#include "msdl.h"
#endif
#if defined(USE_SVGALIB)
#include <vga.h>
#include <vgamouse.h>
#endif
#if defined(USE_SLANG)
#if HAVE_SLANG_H
#include <slang.h>
#else
#if HAVE_SLANG_SLANG_H
#include <slang/slang.h>
#else
#error slang.h file not found!
#endif
#endif
#endif
#if defined(USE_CURSES)
#include <curses.h>
#endif
#if defined(USE_X)
#include <X11/Xlib.h>
#endif
#if HAVE_TERMIOS_H
#include <termios.h>
#endif
#if HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif
#include <setjmp.h>
#ifdef USE_SMP
#include <pthread.h>
#endif
struct os_context {
#ifdef USE_SVGALIB
adv_bool svgalib_active; /**< SVGALIB initialized. */
#endif
#ifdef USE_SLANG
adv_bool slang_active; /**< Slang initialized. */
#endif
#ifdef USE_CURSES
adv_bool curses_active; /**< Curses initialized. */
#endif
#ifdef USE_X
adv_bool x_active; /**< X initialized. */
Display* x_display; /**< X display. */
#endif
#ifdef USE_SDL
adv_bool sdl_active; /**< SDL initialized. */
#endif
int is_quit; /**< Is termination requested. */
char title_buffer[128]; /**< Title of the window. */
struct termios term; /**< Term state. */
adv_bool term_active; /**< The terminal has to be restored. */
};
static struct os_context OS;
static sigjmp_buf OS_HUP; /**< Restart point of the program after a SIGHUP. */
static int OS_SIGNAL; /**< Prevent recursive signal. */
/***************************************************************************/
/* Init */
int os_init(adv_conf* context)
{
memset(&OS, 0, sizeof(OS));
return 0;
}
void os_done(void)
{
}
/***************************************************************************/
/* Signal */
static void os_restore(void)
{
#if defined(USE_KEYBOARD_SVGALIB) || defined(USE_KEYBOARD_SDL) || defined(USE_KEYBOARD_RAW) || defined(USE_KEYBOARD_EVENT)
log_std(("os: keyb_abort\n"));
{
extern void keyb_abort(void);
keyb_abort();
}
#endif
#if defined(USE_MOUSE_SVGALIB) || defined(USE_MOUSE_SDL) || defined(USE_MOUSE_RAW) || defined(USE_MOUSE_EVENT)
log_std(("os: mouseb_abort\n"));
{
extern void mouseb_abort(void);
mouseb_abort();
}
#endif
#if defined(USE_VIDEO_SVGALIB) || defined(USE_VIDEO_FB) || defined(USE_VIDEO_X) || defined(USE_VIDEO_SDL)
log_std(("os: adv_video_abort\n"));
{
extern void adv_video_abort(void);
adv_video_abort();
}
#endif
#if defined(USE_SOUND_OSS) || defined(USE_SOUND_SDL) || defined(USE_SOUND_ALSA)
log_std(("os: sound_abort\n"));
{
extern void soundb_abort(void);
soundb_abort();
}
#endif
target_mode_reset();
if (OS.term_active) {
log_std(("os: tcsetattr(TCSAFLUSH, %sICANON %sECHO)\n", (OS.term.c_lflag & ICANON) ? "" : "~", (OS.term.c_lflag & ECHO) ? "" : "~"));
if (tcsetattr(fileno(stdin), TCSAFLUSH, &OS.term) != 0) {
/* ignore error */
log_std(("os: tcsetattr(TCSAFLUSH) failed\n"));
}
}
log_std(("os: close log\n"));
log_abort();
}
static void os_quit_signal(int signum)
{
OS.is_quit = 1;
}
static void os_hup_signal(int signum)
{
os_restore();
/* restart the program */
siglongjmp(OS_HUP, 1);
}
void os_default_signal(int signum, void* info, void* context)
{
if (OS_SIGNAL) {
/* detect recursive signals, for example a SIGSEGV while processig SIGTERM */
fprintf(stderr, "Double signals, %d and %d\n", OS_SIGNAL, signum);
target_signal(signum, info, context);
}
OS_SIGNAL = signum;
log_std(("os: signal %d\n", signum));
os_restore();
target_signal(signum, info, context);
}
/***************************************************************************/
/* Inner */
int os_is_quit(void)
{
return OS.is_quit;
}
static void os_wait(void)
{
struct timespec req;
req.tv_sec = 0;
req.tv_nsec = 1 * 1000000; /* 1 ms */
nanosleep(&req, 0);
}
static void os_delay(void)
{
double delay_time;
target_clock_t start, stop;
target_yield();
delay_time = adv_measure_step(os_wait, 0.0001, 0.2, 7);
if (delay_time > 0) {
log_std(("os: sleep granularity %g\n", delay_time));
target_usleep_granularity(delay_time * 1000000);
} else {
log_std(("ERROR:os: sleep granularity NOT measured\n"));
target_usleep_granularity(20000 /* 20 ms */);
}
target_yield();
start = target_clock();
stop = target_clock();
while (stop == start)
stop = target_clock();
log_std(("os: clock granularity %g\n", (stop - start) / (double)TARGET_CLOCKS_PER_SEC));
}
#ifdef USE_SMP
static pid_t os_thread_id;
static void* os_thread_function(void* arg)
{
os_thread_id = getpid();
return 0;
}
static int os_thread(void)
{
#ifdef NDEBUG /* disable on debugging */
pthread_t pid;
pid_t process_id;
if (pthread_create(&pid, 0, os_thread_function, 0)) {
log_std(("ERROR:os: error calling pthread_create()\n"));
return -1;
}
if (pthread_join(pid, 0)) {
log_std(("ERROR:os: error calling pthread_join()\n"));
return -1;
}
process_id = getpid();
if (process_id == os_thread_id) {
log_std(("os: thread_id is equal at process_id. Probably NPTL threading.\n"));
} else {
log_std(("os: thread_id is different than process_id. Probably LinuxThread threading.\n"));
}
#endif
return 0;
}
#endif
int os_inner_init(const char* title)
{
const char* display;
struct utsname uts;
struct sigaction term_action;
struct sigaction quit_action;
struct sigaction hup_action;
struct sigaction pipe_action;
#ifdef USE_SDL
SDL_version compiled;
#endif
unsigned char endian[4] = { 0x1, 0x2, 0x3, 0x4 };
uint32 endian_little = 0x04030201;
uint32 endian_big = 0x01020304;
log_std(("os: os_inner_init\n"));
if (uname(&uts) != 0) {
log_std(("ERROR:os: uname failed\n"));
} else {
log_std(("os: sys %s\n", uts.sysname));
log_std(("os: release %s\n", uts.release));
log_std(("os: version %s\n", uts.version));
log_std(("os: machine %s\n", uts.machine));
}
#if HAVE_SYSCONF
#ifdef _SC_CLK_TCK
log_std(("os: sysconf(_SC_CLK_TCK) %ld\n", sysconf(_SC_CLK_TCK)));
#endif
#ifdef _SC_NPROCESSORS_CONF
log_std(("os: sysconf(_SC_NPROCESSORS_CONF) %ld\n", sysconf(_SC_NPROCESSORS_CONF)));
#endif
#ifdef _SC_NPROCESSORS_ONLN
log_std(("os: sysconf(_SC_NPROCESSORS_ONLN) %ld\n", sysconf(_SC_NPROCESSORS_ONLN)));
#endif
#ifdef _SC_PHYS_PAGES
log_std(("os: sysconf(_SC_PHYS_PAGES) %ld\n", sysconf(_SC_PHYS_PAGES)));
#endif
#ifdef _SC_AVPHYS_PAGES
log_std(("os: sysconf(_SC_AVPHYS_PAGES) %ld\n", sysconf(_SC_AVPHYS_PAGES)));
#endif
#ifdef _SC_CHAR_BIT
log_std(("os: sysconf(_SC_CHAR_BIT) %ld\n", sysconf(_SC_CHAR_BIT)));
#endif
#ifdef _SC_LONG_BIT
log_std(("os: sysconf(_SC_LONG_BIT) %ld\n", sysconf(_SC_LONG_BIT)));
#endif
#ifdef _SC_WORD_BIT
log_std(("os: sysconf(_SC_WORD_BIT) %ld\n", sysconf(_SC_WORD_BIT)));
#endif
#endif
/* sync to avoid that the cache flush interfers with timings */
if (system("sync") != 0) {
log_std(("os: sync failed with error: %s\n", strerror(errno)));
}
/* print the compiler version */
#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) /* OSDEF Detect compiler version */
#define COMPILER_RESOLVE(a) #a
#define COMPILER(a, b, c) COMPILER_RESOLVE(a) "." COMPILER_RESOLVE(b) "." COMPILER_RESOLVE(c)
log_std(("os: compiler GNU %s\n", COMPILER(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)));
#else
log_std(("os: compiler unknown\n"));
#endif
/* check for int size */
if (sizeof(uint8) != 1) {
target_err("The program is compiled with invalid uint8 type.\n");
return -1;
}
if (sizeof(uint16) != 2) {
target_err("The program is compiled with invalid uint16 type.\n");
return -1;
}
if (sizeof(uint32) != 4) {
target_err("The program is compiled with invalid uint32 type.\n");
return -1;
}
if (sizeof(uint64) != 8) {
target_err("The program is compiled with invalid uint64 type.\n");
return -1;
}
/* check for the endianess */
#ifdef USE_MSB
log_std(("os: compiled big endian system\n"));
if (memcmp(endian, &endian_big, 4) != 0) {
target_err("The program is compiled as bigendian but system doesn't appear to be bigendian.\n");
return -1;
}
#endif
#ifdef USE_LSB
log_std(("os: compiled little endian system\n"));
if (memcmp(endian, &endian_little, 4) != 0) {
target_err("The program is compiled as littleendian but system doesn't appear to be littleendian.\n");
return -1;
}
#endif
#ifdef USE_SMP
/* check the thread support */
if (os_thread() != 0) {
target_err("Error on the threading support.\n");
return -1;
}
#endif
/* get DISPLAY environment variable */
display = getenv("DISPLAY");
if (display)
log_std(("os: DISPLAY=%s\n", display));
else
log_std(("os: DISPLAY undef\n"));
/* probe the delay system */
os_delay();
if (!target_wm()) {
log_std(("os: tcgetattr()\n"));
if (tcgetattr(fileno(stdin), &OS.term) != 0) {
log_std(("ERROR:os: error getting the tty state.\n"));
OS.term_active = 0;
} else {
OS.term_active = 1;
}
}
#if defined(USE_X)
OS.x_active = 0;
{
int event_base, error_base;
int major_version, minor_version;
log_std(("os: XOpenDisplay()\n"));
OS.dga_display = XOpenDisplay(0);
if (OS.dga_display) {
OS.x_active = 1;
} else {
log_std(("WARNING:os: XOpenDisplay() failed. All the X drivers will be disabled.\n"));
}
}
#endif
#if defined(USE_SVGALIB)
OS.svgalib_active = 0;
if (!target_wm()) {
int h;
log_std(("os: open /dev/svga\n"));
/* try opening the device, otherwise vga_init() will abort the program. */
h = open("/dev/svga", O_RDWR);
if (h >= 0) {
int res;
close(h);
vga_disabledriverreport();
/* check the version of the SVGALIB */
res = vga_setmode(-1);
if (res < 0 || res < 0x1911) { /* 1.9.11 */
log_std(("WARNING:os: invalid SVGALIB version %x. All the SVGALIB drivers will be disabled.\n", (int)res));
/* don't print the message. It may be a normal condition. */
/* target_nfo("Invalid SVGALIB version, you need SVGALIB version 1.9.x or 2.0.x.\nPlease upgrade or recompile without SVGALIB support.\n"); */
} else {
log_std(("os: vga_init()\n"));
if (vga_init() != 0) {
log_std(("os: vga_init() failed\n"));
target_err("Error initializing the SVGALIB video support.\n");
return -1;
}
OS.svgalib_active = 1;
}
} else {
log_std(("WARNING:os: open /dev/svga failed. All the SVGALIB drivers will be disabled.\n"));
/* don't print the message. It may be a normal condition. */
/* target_nfo("Error opening the SVGALIB device /dev/svga.\n"); */
}
} else {
log_std(("WARNING:os: vga_init() skipped because X is active. All the SVGALIB drivers will be disabled.\n"));
/* don't print the message. It may be a normal condition. */
/* target_nfo("SVGALIB not initialized because it's unusable in X.\n"); */
}
#endif
#if defined(USE_SDL)
log_std(("os: SDL_Init(SDL_INIT_NOPARACHUTE)\n"));
if (SDL_Init(SDL_INIT_NOPARACHUTE) != 0) {
log_std(("os: SDL_Init() failed, %s\n", SDL_GetError()));
target_err("Error initializing the SDL video support.\n");
return -1;
}
OS.sdl_active = 1;
SDL_VERSION(&compiled);
log_std(("os: compiled with sdl %d.%d.%d\n", compiled.major, compiled.minor, compiled.patch));
#if SDL_MAJOR_VERSION == 1
log_std(("os: linked with sdl %d.%d.%d\n", SDL_Linked_Version()->major, SDL_Linked_Version()->minor, SDL_Linked_Version()->patch));
#else
SDL_GetVersion(&compiled);
log_std(("os: linked with sdl %d.%d.%d\n", compiled.major, compiled.minor, compiled.patch));
log_std(("os: sdl platform %s\n", SDL_GetPlatform()));
log_std(("os: sdl cpi cache line size %d\n", SDL_GetCPUCacheLineSize()));
log_std(("os: sdl cpu count %d\n", SDL_GetCPUCount()));
log_std(("os: sdl ram %d\n", SDL_GetSystemRAM()));
#endif
#ifdef USE_MSB
if (SDL_BYTEORDER != SDL_BIG_ENDIAN) {
target_err("Invalid SDL endianess.\n");
return -1;
}
#endif
#ifdef USE_LSB
if (SDL_BYTEORDER != SDL_LIL_ENDIAN) {
target_err("Invalid SDL endianess.\n");
return -1;
}
#endif
#endif
#if defined(USE_SLANG)
OS.slang_active = 0;
if (!target_wm()) {
log_std(("os: SLtt_get_terminfo()\n"));
SLtt_get_terminfo();
log_std(("os: SLsmg_init_smg()\n"));
SLsmg_init_smg();
OS.slang_active = 1;
} else {
log_std(("WARNING:os: SLang_init_tty() skipped because X is active. All the SLang drivers will be disabled.\n"));
}
#endif
#if defined(USE_CURSES)
OS.curses_active = 0;
if (!target_wm()) {
log_std(("os: initscr()\n"));
initscr();
start_color();
cbreak();
noecho();
nonl();
OS.curses_active = 1;
} else {
log_std(("WARNING:os: curses initscr() skipped because X is active. All the curses drivers will be disabled.\n"));
}
#endif
/* set the titlebar */
sncpy(OS.title_buffer, sizeof(OS.title_buffer), title);
/* set some signal handlers */
/* STANDARD signals */
term_action.sa_handler = (void (*)(int))os_signal;
/* block external generated signals in the signal handler */
sigemptyset(&term_action.sa_mask);
sigaddset(&term_action.sa_mask, SIGALRM);
sigaddset(&term_action.sa_mask, SIGINT);
sigaddset(&term_action.sa_mask, SIGTERM);
sigaddset(&term_action.sa_mask, SIGHUP);
sigaddset(&term_action.sa_mask, SIGQUIT);
term_action.sa_flags = SA_RESTART | SA_SIGINFO;
/* external generated */
sigaction(SIGALRM, &term_action, 0);
sigaction(SIGINT, &term_action, 0);
sigaction(SIGTERM, &term_action, 0);
/* internal generated */
sigaction(SIGABRT, &term_action, 0);
sigaction(SIGFPE, &term_action, 0);
sigaction(SIGILL, &term_action, 0);
sigaction(SIGSEGV, &term_action, 0);
sigaction(SIGBUS, &term_action, 0);
/* HUP signal */
hup_action.sa_handler = os_hup_signal;
sigemptyset(&hup_action.sa_mask);
hup_action.sa_flags = SA_RESTART;
sigaction(SIGHUP, &hup_action, 0);
/* QUIT signal */
quit_action.sa_handler = os_quit_signal;
sigemptyset(&quit_action.sa_mask);
quit_action.sa_flags = SA_RESTART;
sigaction(SIGQUIT, &quit_action, 0);
/* PIPE signal, ignoring it force some functions to */
/* return with error. It happen for example on the LCD sockets. */
pipe_action.sa_handler = SIG_IGN;
sigemptyset(&pipe_action.sa_mask);
pipe_action.sa_flags = SA_RESTART;
sigaction(SIGPIPE, &pipe_action, 0);
return 0;
}
#if defined(USE_SVGALIB)
void* os_internal_svgalib_get(void)
{
if (OS.svgalib_active)
return &OS.svgalib_active;
return 0;
}
#endif
#if defined(USE_SLANG)
void* os_internal_slang_get(void)
{
if (OS.slang_active)
return &OS.slang_active;
return 0;
}
#endif
#if defined(USE_CURSES)
void* os_internal_curses_get(void)
{
if (OS.curses_active)
return &OS.curses_active;
return 0;
}
#endif
#if defined(USE_X)
void* os_internal_x_get(void)
{
if (OS.x_active)
return OS.x_display;
return 0;
}
#endif
#if defined(USE_SDL)
const char* os_internal_sdl_title_get(void)
{
return OS.title_buffer;
}
void* os_internal_sdl_get(void)
{
if (OS.sdl_active)
return &OS.sdl_active;
return 0;
}
#endif
void os_inner_done(void)
{
log_std(("os: os_inner_done\n"));
#ifdef USE_X
if (OS.x_display) {
log_std(("os: XCloseDisplay()\n"));
OS.curses_active = 0;
XCloseDisplay(OS.x_display);
}
#endif
#ifdef USE_CURSES
if (OS.curses_active) {
log_std(("os: endwin()\n"));
OS.curses_active = 0;
endwin();
}
#endif
#ifdef USE_SLANG
if (OS.slang_active) {
log_std(("os: SLsmg_reset_smg()\n"));
OS.slang_active = 0;
SLsmg_reset_smg();
}
#endif
#ifdef USE_SDL
if (OS.sdl_active) {
log_std(("os: SDL_Quit()\n"));
OS.sdl_active = 0;
SDL_Quit();
}
#endif
#ifdef USE_SVGALIB
if (OS.svgalib_active) {
OS.svgalib_active = 0;
mouse_close(); /* always called */
}
#endif
/* restore term */
if (OS.term_active) {
OS.term_active = 0;
log_std(("os: tcsetattr(TCSAFLUSH, %sICANON %sECHO)\n", (OS.term.c_lflag & ICANON) ? "" : "~", (OS.term.c_lflag & ECHO) ? "" : "~"));
if (tcsetattr(fileno(stdin), TCSAFLUSH, &OS.term) != 0) {
/* ignore error */
log_std(("os: tcsetattr(TCSAFLUSH) failed\n"));
}
}
log_std(("os: os_inner_done completed\n"));
}
void os_poll(void)
{
#ifdef USE_SDL
SDL_Event event;
/* The event queue works only with the video initialized */
if (!SDL_WasInit(SDL_INIT_VIDEO))
return;
log_debug(("os: SDL_PollEvent()\n"));
while (SDL_PollEvent(&event)) {
log_debug(("os: SDL_PollEvent() -> event.type:%d\n", (int)event.type));
switch (event.type) {
case SDL_KEYDOWN:
#ifdef USE_KEYBOARD_SDL
#if SDL_MAJOR_VERSION == 1
keyb_sdl_event_press(event.key.keysym.sym);
#else
keyb_sdl_event_press(event.key.keysym.scancode);
#endif
#endif
#ifdef USE_INPUT_SDL
inputb_sdl_event_press(event.key.keysym.sym);
#endif
#if SDL_MAJOR_VERSION == 1
/* toggle fullscreen check */
if (event.key.keysym.sym == SDLK_RETURN
&& (event.key.keysym.mod & KMOD_ALT) != 0) {
if (SDL_WasInit(SDL_INIT_VIDEO) && SDL_GetVideoSurface()) {
SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
if ((SDL_GetVideoSurface()->flags & SDL_FULLSCREEN) != 0) {
SDL_ShowCursor(SDL_DISABLE);
} else {
SDL_ShowCursor(SDL_ENABLE);
}
}
}
#endif
break;
case SDL_KEYUP:
#ifdef USE_KEYBOARD_SDL
#if SDL_MAJOR_VERSION == 1
keyb_sdl_event_release(event.key.keysym.sym);
#else
keyb_sdl_event_release(event.key.keysym.scancode);
#endif
#endif
#ifdef USE_INPUT_SDL
inputb_sdl_event_release(event.key.keysym.sym);
#endif
break;
case SDL_MOUSEMOTION:
#ifdef USE_MOUSE_SDL
mouseb_sdl_event_move(event.motion.xrel, event.motion.yrel);
#endif
break;
case SDL_MOUSEBUTTONDOWN:
#ifdef USE_MOUSE_SDL
if (event.button.button > 0)
mouseb_sdl_event_press(event.button.button - 1);
#endif
break;
case SDL_MOUSEBUTTONUP:
#ifdef USE_MOUSE_SDL
if (event.button.button > 0)
mouseb_sdl_event_release(event.button.button - 1);
#endif
break;
case SDL_QUIT:
OS.is_quit = 1;
break;
}
}
#endif
}
void os_fire(void)
{
}
/***************************************************************************/
/* Main */
int main(int argc, char* argv[])
{
char** copyv;
int i;
/* duplicate the arguments */
copyv = alloca((argc + 1) * sizeof(char*));
for (i = 0; i < argc; ++i) {
copyv[i] = alloca(strlen(argv[i]) + 1);
strcpy(copyv[i], argv[i]);
}
copyv[i] = 0;
/* set the entry point to restart the program */
if (sigsetjmp(OS_HUP, 1) != 0) {
/* restart the program */
execv(copyv[0], copyv);
/* abort if fail */
abort();
}
if (target_init() != 0)
return EXIT_FAILURE;
if (file_init() != 0) {
target_done();
return EXIT_FAILURE;
}
if (os_main(argc, argv) != 0) {
file_done();
target_done();
return EXIT_FAILURE;
}
file_done();
target_done();
return EXIT_SUCCESS;
}