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comparison src/audio/mint/SDL_mintaudio_it.S @ 1097:c83fa1c650dd

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Move GSXB callback to C source
author Patrice Mandin <patmandin@gmail.com>
date Wed, 20 Jul 2005 17:44:11 +0000
parents 37b766becf3b
children d48ead2d2ba5 ea2a327b92d7
comparison
equal deleted inserted replaced
1096:37b766becf3b 1097:c83fa1c650dd
28 28
29 .text 29 .text
30 30
31 .globl _SDL_MintAudio_Callback 31 .globl _SDL_MintAudio_Callback
32 32
33 .globl _SDL_MintAudio_GsxbInterrupt
34 .globl _SDL_MintAudio_EmptyGsxbInterrupt
35 .globl _SDL_MintAudio_XbiosInterrupt 33 .globl _SDL_MintAudio_XbiosInterrupt
36 .globl _SDL_MintAudio_XbiosInterruptMeasureClock 34 .globl _SDL_MintAudio_XbiosInterruptMeasureClock
37 .globl _SDL_MintAudio_Dma8Interrupt 35 .globl _SDL_MintAudio_Dma8Interrupt
38 .globl _SDL_MintAudio_StfaInterrupt 36 .globl _SDL_MintAudio_StfaInterrupt
39 37
54 */ 52 */
55 53
56 #define savptr 0x4a2 54 #define savptr 0x4a2
57 #define savamt 0x46 55 #define savamt 0x46
58 56
59 /*--- GSXB interrupt vector ---*/
60
61 .text
62 _SDL_MintAudio_GsxbInterrupt:
63
64 /* Check if we are not already running */
65 tstw _SDL_MintAudio_mutex
66 bnes _SDL_MintAudio_EmptyGsxbInterrupt
67 notw _SDL_MintAudio_mutex
68
69 /* Swap buffers */
70 eorw #1,_SDL_MintAudio_numbuf
71
72 moveml d0-d7/a0-a6,sp@-
73
74 /* Callback */
75 jsr _SDL_MintAudio_Callback
76
77 /* Set new buffer */
78
79 moveq #0,d0
80 movel _SDL_MintAudio_audiosize,d1
81
82 movew _SDL_MintAudio_numbuf,d0
83 lsll #2,d0
84 lea _SDL_MintAudio_audiobuf,a0
85 movel a0@(d0:l),a1
86
87 lea a1@(d1:l),a2
88
89 movel a2,sp@-
90 movel a1,sp@-
91 clrw sp@-
92 movew #131,sp@-
93 trap #14
94 lea sp@(12),sp
95
96 moveml sp@+,d0-d7/a0-a6
97
98 clrw _SDL_MintAudio_mutex
99 _SDL_MintAudio_EmptyGsxbInterrupt:
100 rts
101
102 /*--- Xbios interrupt vector to measure Falcon external clock ---*/ 57 /*--- Xbios interrupt vector to measure Falcon external clock ---*/
103 58
104 _SDL_MintAudio_XbiosInterruptMeasureClock: /* 1 mS */ 59 _SDL_MintAudio_XbiosInterruptMeasureClock: /* 1 mS */
105 60
106 btst #0,0xFFFF8901:w /* state DMA sound */ 61 btst #0,0xFFFF8901:w /* state DMA sound */