Mercurial > sdl-ios-xcode

annotate src/timer/mint/SDL_systimer.c @ 4064:940fddb81bea SDL-1.2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Mac OS X/x86 won't build the MMX/YUV inline assembly without optimizations enabled (not enough registers), so for now, we only build it if we see the __OPTIMIZE__ #define, which GCC provides when you build at -O1 or higher.
author Ryan C. Gordon <icculus@icculus.org>
date Sat, 14 Jul 2007 07:26:34 +0000
parents 40b6b5744e05
children a1b03ba2fcd0
rev   line source
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /*
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
3 Copyright (C) 1997-2006 Sam Lantinga
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
4
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
6 modify it under the terms of the GNU Lesser General Public
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
9
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
13 Lesser General Public License for more details.
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
14
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1045
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
18
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
19 Sam Lantinga
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
20 slouken@libsdl.org
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
21 */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1396
diff changeset
22 #include "SDL_config.h"
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
23
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
24 #ifdef SDL_TIMER_MINT
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
25
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 /*
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
27 * TOS/MiNT timer driver
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28 * based on vbl vector
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29 *
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
30 * Patrice Mandin
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
31 */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
32
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33 #include <stdio.h>
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 #include <sys/time.h>
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 #include <signal.h>
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 #include <unistd.h>
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37 #include <string.h>
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
38 #include <errno.h>
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39
1045
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
40 #include <mint/cookie.h>
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
41 #include <mint/sysvars.h>
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
42 #include <mint/osbind.h>
1045
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
43 #include <mint/mintbind.h>
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
44
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
45 #include "SDL_timer.h"
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
46 #include "../SDL_timer_c.h"
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47 #include "SDL_thread.h"
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48
1396
428c8690cf73 Add missing include directories
Patrice Mandin <patmandin@gmail.com>
parents: 1361
diff changeset
49 #include "SDL_vbltimer_s.h"
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50
3883
cfe850b334e7 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1635
diff changeset
51 /* from audio/mint */
cfe850b334e7 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1635
diff changeset
52 void SDL_MintAudio_CheckFpu(void);
cfe850b334e7 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1635
diff changeset
53
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54 /* The first ticks value of the application */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55 static Uint32 start;
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
56 static SDL_bool read_hz200_from_vbl = SDL_FALSE;
1045
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
57 static int mint_present; /* can we use Syield() ? */
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 void SDL_StartTicks(void)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60 {
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
61 void *old_stack;
1045
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
62 unsigned long dummy;
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64 /* Set first ticks value */
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
65 old_stack = (void *)Super(0);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
66 start = *((volatile long *)_hz_200);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
67 Super(old_stack);
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 start *= 5; /* One _hz_200 tic is 5ms */
1045
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
70
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
71 mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
72 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
73
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
74 Uint32 SDL_GetTicks (void)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
75 {
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
76 Uint32 now = start;
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
77
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
78 if (read_hz200_from_vbl) {
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
79 now = SDL_Atari_hz200;
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
80 } else {
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
81 void *old_stack = (void *)Super(0);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
82 now = *((volatile long *)_hz_200);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
83 Super(old_stack);
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
84 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
85
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86 return((now*5)-start);
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
87 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
88
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
89 void SDL_Delay (Uint32 ms)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
90 {
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
91 Uint32 now;
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
92
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
93 now = SDL_GetTicks();
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
94 while ((SDL_GetTicks()-now)<ms){
1045
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
95 if (mint_present) {
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
96 Syield();
63b8e93a3a52 Release CPU when waiting
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
97 }
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
98 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
99 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
100
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
101 /* Data to handle a single periodic alarm */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
102 static SDL_bool timer_installed=SDL_FALSE;
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
103
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
104 /* This is only called if the event thread is not running */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
105 int SDL_SYS_TimerInit(void)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
106 {
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
107 void *old_stack;
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
108
3883
cfe850b334e7 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1635
diff changeset
109 SDL_MintAudio_CheckFpu();
cfe850b334e7 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1635
diff changeset
110
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
111 /* Install RunTimer in vbl vector */
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
112 old_stack = (void *)Super(0);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
113 timer_installed = !SDL_AtariVblInstall(SDL_ThreadedTimerCheck);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
114 Super(old_stack);
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
115
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
116 if (!timer_installed) {
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
117 return(-1);
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
118 }
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
119
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
120 read_hz200_from_vbl = SDL_TRUE;
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
121 return(SDL_SetTimerThreaded(0));
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
122 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
123
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
124 void SDL_SYS_TimerQuit(void)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
125 {
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
126 /* Uninstall RunTimer vbl vector */
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
127 if (timer_installed) {
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
128 void *old_stack = (void *)Super(0);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
129 SDL_AtariVblUninstall(SDL_ThreadedTimerCheck);
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
130 Super(old_stack);
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
131 timer_installed = SDL_FALSE;
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
132 }
3955
40b6b5744e05 Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 3954
diff changeset
133 read_hz200_from_vbl = SDL_FALSE;
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136 int SDL_SYS_StartTimer(void)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 {
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 SDL_SetError("Internal logic error: MiNT uses vbl timer");
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 return(-1);
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 }
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 void SDL_SYS_StopTimer(void)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 {
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 return;
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 }
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
146
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
147 #endif /* SDL_TIMER_MINT */