Mercurial > sdl-ios-xcode

annotate src/timer/mint/SDL_vbltimer.S @ 2198:fe19afb86473

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Split acinclude.m4 into its component parts for easy updating
author Sam Lantinga <slouken@libsdl.org>
date Sun, 15 Jul 2007 01:51:11 +0000
parents b42abf0a50bc
children 99210400e8b9
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: 297
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: 297
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: 297
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: 297
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: 297
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: 297
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: 297
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 */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
22
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
23 /*
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
24 * VBL queue routine
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
25 *
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 * Patrice Mandin
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
27 */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29 #define _vbl_queue 0x456
2116
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
30 #define _hz_200 0x4ba
281
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 .text
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 .globl _SDL_AtariVblInstall
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 .globl _SDL_AtariVblUninstall
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36
2052
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
37 .globl _SDL_MintAudio_hasfpu
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
38
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39 /*--- Vector installer ---*/
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
40
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41 _SDL_AtariVblInstall:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
42 movel sp@(4),my_vector
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
43 lea _my_vbl,a0
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 clrw vbl_mutex
2116
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
46 movel _hz_200.w, _SDL_Atari_hz200
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48 /* Stop interrupts */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
49
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50 movew #0x2700,sr
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
51
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
52 /* Read vbl_queue pointer */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
53 movel _vbl_queue.w,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55 /* Search a free place */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
56 moveq #7,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57 bcl_search_place:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58 movel (a1),d1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 beqs place_found
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60 addql #4,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
61 dbra d0,bcl_search_place
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63 /* Not found */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64 moveq #1,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
65 bras exit_vbl_queue
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
66
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
67 /* Then install ourselves */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68 place_found:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 movel a0,(a1)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
70 moveq #0,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
71
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
72 exit_vbl_queue:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
73 /* Restart interrupts */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
74 movew #0x2300,sr
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
75
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
76 rts
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
77
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
78 /*--- Vector uninstaller ---*/
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
79
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
80 _SDL_AtariVblUninstall:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
81 movel sp@(4),d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
82 cmpl my_vector,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
83 bnes badvector
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 movel #_my_vbl,d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
87 /* Stop interrupts */
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 movew #0x2700,sr
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 /* Read vbl_queue pointer */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
92 movel _vbl_queue.w,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
93
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
94 /* Search where we are */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
95 moveq #7,d1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
96 bcl2_search_place:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
97 cmpl (a1),d0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
98 bnes next_place
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
99 clrl (a1)
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
100 moveq #0,d1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
101 next_place:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
102 addql #4,a1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
103 dbra d1,bcl2_search_place
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
104
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
105 /* Restart interrupts */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
106 movew #0x2300,sr
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
107 badvector:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
108 rts
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
109
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
110 /*--- Our vbl ---*/
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
111
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
112 _my_vbl:
2116
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
113 /* Update _hz_200 */
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
114 movel _hz_200.w, _SDL_Atari_hz200
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
115
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
116 /* Verify if this is not already running */
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
117
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
118 tstw vbl_mutex
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
119 bnes vbl_end
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
120 notw vbl_mutex
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
121
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
122 moveml d0-d7/a0-a6,sp@-
2052
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
123
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
124 /* Save FPU if needed */
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
125 tstw _SDL_MintAudio_hasfpu
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
126 beqs SDL_AtariVbl_nofpu1
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
127 .chip 68060
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
128 fsave sp@-
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
129 fmoveml fpcr/fpsr/fpiar,sp@-
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
130 fmovemx fp0-fp7,sp@-
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
131 .chip 68000
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
132 SDL_AtariVbl_nofpu1:
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
133
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 movel my_vector,a0
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135 jsr a0@
2052
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
136
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
137 /* Restore FPU if needed */
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
138 tstw _SDL_MintAudio_hasfpu
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
139 beqs SDL_AtariVbl_Xbios_nofpu2
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
140 .chip 68060
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
141 fmovemx sp@+,fp0-fp7
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
142 fmoveml sp@+,fpcr/fpsr/fpiar
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
143 frestore sp@+
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
144 .chip 68000
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
145 SDL_AtariVbl_Xbios_nofpu2:
eb5e61b72da3 Also save/restore fpu register in vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1312
diff changeset
146
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 moveml sp@+,d0-d7/a0-a6
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 clrw vbl_mutex
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 vbl_end:
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 rts
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 .data
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 .even
2116
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
155 .comm _SDL_Atari_hz200,4*1
b42abf0a50bc Avoid switch to supervisor mode in SDL_GetTicks, by updating system counter from vbl interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 2052
diff changeset
156 .even
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 .comm vbl_mutex,2*1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 .even
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 .comm my_vector,4*1