| 0,0 → 1,114 |
|---|
| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library 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 |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with this library; if not, write to the Free |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| Sam Lantinga |
| slouken@devolution.com |
| */ |
| |
| #ifdef SAVE_RCSID |
| static char rcsid = |
| "@(#) $Id: SDL_systimer.c,v 1.2 2001/04/26 16:50:18 hercules Exp $"; |
| #endif |
| |
| #include <stdio.h> |
| #include <sys/time.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include "SDL_error.h" |
| #include "SDL_timer.h" |
| #include "SDL_timer_c.h" |
| |
| #if _POSIX_THREAD_SYSCALL_SOFT |
| #include <pthread.h> |
| #endif |
| |
| #if defined(DISABLE_THREADS) || defined(FORK_HACK) |
| #define USE_ITIMER |
| #endif |
| |
| |
| /* The first ticks value of the application */ |
| //static struct timeval start; |
| //static unsigned startlo,starthi; |
| //static unsigned clockrate; |
| static unsigned starttime; |
| |
| void SDL_StartTicks(void) |
| { |
| // gettimeofday(&start, NULL); |
| // __asm__ ("int $0x40" : "=a"(clockrate) : "a"(18),"b"(5)); |
| // __asm__ ("rdtsc" : "=a"(startlo),"=d"(starthi)); |
| __asm__ ("int $0x40" : "=a"(starttime) : "a"(26),"b"(9)); |
| } |
| |
| |
| Uint32 SDL_GetTicks (void) |
| { |
| /* struct timeval now; |
| Uint32 ticks; |
| gettimeofday(&now, NULL); |
| ticks=(now.tv_sec-start.tv_sec)*1000+(now.tv_usec-start.tv_usec)/1000; |
| return(ticks);*/ |
| /*int res; |
| __asm__ ("rdtsc\n\t" |
| "sub (_startlo),%%eax\n\t" |
| "sbb (_starthi),%%edx\n\t" |
| "push %%eax\n\t" |
| "mov %%edx,%%eax\n\t" |
| "mov $1000,%%ecx\n\t" |
| "mul %%ecx\n\t" |
| "xchg (%%esp),%%eax\n\t" |
| "mul %%ecx\n\t" |
| "add %%edx,(%%esp)\n\t" |
| "pop %%edx\n\t" |
| "divl (_clockrate)\n\t" : "=a"(res)); |
| return res;*/ |
| unsigned curtime; |
| __asm__ ("int $0x40" : "=a"(curtime) : "a"(26),"b"(9)); |
| return (curtime-starttime)*10; |
| } |
| |
| void SDL_Delay (Uint32 ms) |
| { |
| __menuet__delay100(ms); |
| /* Uint32 start = SDL_GetTicks(); |
| do |
| __asm__("int $0x40" :: "a"(68),"b"(1)); |
| while (SDL_GetTicks()-start < ms);*/ |
| } |
| |
| int SDL_SYS_TimerInit(void) |
| { |
| return(0); |
| } |
| |
| void SDL_SYS_TimerQuit(void) |
| { |
| } |
| |
| int SDL_SYS_StartTimer(void) |
| { |
| return(0); |
| } |
| |
| void SDL_SYS_StopTimer(void) |
| { |
| } |