mirror of
https://github.com/yawut/SDL.git
synced 2026-09-07 08:36:19 -05:00
Removed outdated Atari support
This commit is contained in:
Sam Lantinga
@@ -1,155 +0,0 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#ifdef SDL_TIMER_MINT
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/*
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* TOS/MiNT timer driver
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* based on vbl vector
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*
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* Patrice Mandin
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*/
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#include <stdio.h>
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#include <sys/time.h>
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#include <signal.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <mint/cookie.h>
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#include <mint/sysvars.h>
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#include <mint/osbind.h>
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#include <mint/mintbind.h>
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#include "SDL_timer.h"
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#include "../SDL_timer_c.h"
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#include "SDL_thread.h"
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#include "SDL_vbltimer_s.h"
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/* from audio/mint */
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void SDL_MintAudio_CheckFpu(void);
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/* The first ticks value of the application */
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static Uint32 start;
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static SDL_bool read_hz200_from_vbl = SDL_FALSE;
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static int mint_present; /* can we use Syield() ? */
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void
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SDL_StartTicks(void)
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{
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void *oldpile;
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unsigned long dummy;
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/* Set first ticks value */
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oldpile = (void *) Super(0);
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start = *((volatile long *) _hz_200);
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Super(oldpile);
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start *= 5; /* One _hz_200 tic is 5ms */
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mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);
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}
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Uint32
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SDL_GetTicks(void)
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{
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Uint32 now = start;
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if (read_hz200_from_vbl) {
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now = SDL_Atari_hz200;
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} else {
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void *old_stack = (void *) Super(0);
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now = *((volatile long *) _hz_200);
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Super(old_stack);
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}
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return ((now * 5) - start);
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}
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void
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SDL_Delay(Uint32 ms)
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{
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Uint32 now;
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now = SDL_GetTicks();
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while ((SDL_GetTicks() - now) < ms) {
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if (mint_present) {
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Syield();
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}
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}
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}
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/* Data to handle a single periodic alarm */
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static SDL_bool timer_installed = SDL_FALSE;
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/* This is only called if the event thread is not running */
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int
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SDL_SYS_TimerInit(void)
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{
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void *old_stack;
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SDL_MintAudio_CheckFpu();
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/* Install RunTimer in vbl vector */
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old_stack = (void *) Super(0);
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timer_installed = !SDL_AtariVblInstall(SDL_ThreadedTimerCheck);
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Super(old_stack);
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if (!timer_installed) {
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return (-1);
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}
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read_hz200_from_vbl = SDL_TRUE;
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return (SDL_SetTimerThreaded(0));
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}
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void
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SDL_SYS_TimerQuit(void)
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{
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if (timer_installed) {
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/* Uninstall RunTimer vbl vector */
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void *old_stack = (void *) Super(0);
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SDL_AtariVblUninstall(SDL_ThreadedTimerCheck);
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Super(old_stack);
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timer_installed = SDL_FALSE;
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}
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read_hz200_from_vbl = SDL_FALSE;
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}
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int
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SDL_SYS_StartTimer(void)
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{
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SDL_SetError("Internal logic error: MiNT uses vbl timer");
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return (-1);
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}
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void
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SDL_SYS_StopTimer(void)
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{
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return;
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}
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#endif /* SDL_TIMER_MINT */
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/* vi: set ts=4 sw=4 expandtab: */
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@@ -1,159 +0,0 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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/*
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* VBL queue routine
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*
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* Patrice Mandin
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*/
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#define _vbl_queue 0x456
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#define _hz_200 0x4ba
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.text
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.globl _SDL_AtariVblInstall
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.globl _SDL_AtariVblUninstall
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.globl _SDL_MintAudio_hasfpu
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/*--- Vector installer ---*/
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_SDL_AtariVblInstall:
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movel sp@(4),my_vector
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lea _my_vbl,a0
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clrw vbl_mutex
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movel _hz_200.w, _SDL_Atari_hz200
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/* Stop interrupts */
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movew #0x2700,sr
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/* Read vbl_queue pointer */
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movel _vbl_queue.w,a1
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/* Search a free place */
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moveq #7,d0
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bcl_search_place:
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movel (a1),d1
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beqs place_found
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addql #4,a1
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dbra d0,bcl_search_place
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/* Not found */
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moveq #1,d0
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bras exit_vbl_queue
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/* Then install ourselves */
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place_found:
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movel a0,(a1)
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moveq #0,d0
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exit_vbl_queue:
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/* Restart interrupts */
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movew #0x2300,sr
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rts
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/*--- Vector uninstaller ---*/
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_SDL_AtariVblUninstall:
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movel sp@(4),d0
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cmpl my_vector,d0
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bnes badvector
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movel #_my_vbl,d0
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/* Stop interrupts */
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movew #0x2700,sr
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/* Read vbl_queue pointer */
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movel _vbl_queue.w,a1
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/* Search where we are */
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moveq #7,d1
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bcl2_search_place:
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cmpl (a1),d0
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bnes next_place
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clrl (a1)
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moveq #0,d1
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next_place:
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addql #4,a1
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dbra d1,bcl2_search_place
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/* Restart interrupts */
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movew #0x2300,sr
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badvector:
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rts
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/*--- Our vbl ---*/
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_my_vbl:
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/* Update _hz_200 */
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movel _hz_200.w, _SDL_Atari_hz200
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/* Verify if this is not already running */
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tstw vbl_mutex
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bnes vbl_end
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notw vbl_mutex
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moveml d0-d7/a0-a6,sp@-
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/* Save FPU if needed */
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tstw _SDL_MintAudio_hasfpu
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beqs SDL_AtariVbl_nofpu1
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.chip 68060
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fsave sp@-
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fmoveml fpcr/fpsr/fpiar,sp@-
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fmovemx fp0-fp7,sp@-
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.chip 68000
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SDL_AtariVbl_nofpu1:
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movel my_vector,a0
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jsr a0@
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/* Restore FPU if needed */
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tstw _SDL_MintAudio_hasfpu
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beqs SDL_AtariVbl_Xbios_nofpu2
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.chip 68060
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fmovemx sp@+,fp0-fp7
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fmoveml sp@+,fpcr/fpsr/fpiar
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frestore sp@+
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.chip 68000
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SDL_AtariVbl_Xbios_nofpu2:
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moveml sp@+,d0-d7/a0-a6
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clrw vbl_mutex
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vbl_end:
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rts
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.data
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.even
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.comm _SDL_Atari_hz200,4*1
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.even
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.comm vbl_mutex,2*1
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.even
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.comm my_vector,4*1
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@@ -1,36 +0,0 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
|
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This library is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
|
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|
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/*
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* TOS/MiNT timer driver
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* based on vbl vector
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*
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* Patrice Mandin
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*/
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extern volatile long SDL_Atari_hz200;
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/* Functions prototypes */
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extern int SDL_AtariVblInstall(void *newvector);
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extern void SDL_AtariVblUninstall(void *newvector);
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/* vi: set ts=4 sw=4 expandtab: */
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