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comparison src/video/ataricommon/SDL_xbiosinterrupt.S @ 820:0b9b4bf3c1e7

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Important crash fix: system vectors for mouse/joystick were not restored
author Patrice Mandin <patmandin@gmail.com>
date Sat, 14 Feb 2004 10:12:27 +0000
parents 9c6613983e85
children d9f3b5bb7870
comparison
equal deleted inserted replaced
819:1318a8b87f48 820:0b9b4bf3c1e7
32 */ 32 */
33 33
34 .text 34 .text
35 35
36 .globl _SDL_AtariXbios_Install 36 .globl _SDL_AtariXbios_Install
37 .globl _SDL_AtariXbios_Restore
37 .globl _SDL_AtariXbios_MouseVector 38 .globl _SDL_AtariXbios_MouseVector
38 .globl _SDL_AtariXbios_JoystickVector 39 .globl _SDL_AtariXbios_JoystickVector
39 40
40 .globl _SDL_AtariXbios_mouseb 41 .globl _SDL_AtariXbios_mouseb
41 .globl _SDL_AtariXbios_mousex 42 .globl _SDL_AtariXbios_mousex
51 52
52 movew #0x2700,sr 53 movew #0x2700,sr
53 54
54 /* Save old mouse vector, set our routine */ 55 /* Save old mouse vector, set our routine */
55 56
57 clrl oldmousevector
56 movel sp@(8),d0 58 movel sp@(8),d0
57 beqs no_new_mouse_vector 59 beqs no_new_mouse_vector
58 movel a0@(16),oldmousevector 60 movel a0@(16),oldmousevector
59 movel d0,a0@(16) 61 movel d0,a0@(16)
60 no_new_mouse_vector: 62 no_new_mouse_vector:
61 63
62 /* Save old joystick vector, set our routine */ 64 /* Save old joystick vector, set our routine */
63 65
66 clrl oldjoystickvector
64 movel sp@(12),d0 67 movel sp@(12),d0
65 beqs no_new_joystick_vector 68 beqs no_new_joystick_vector
66 movel a0@(24),oldjoystickvector 69 movel a0@(24),oldjoystickvector
67 movel d0,a0@(24) 70 movel d0,a0@(24)
68 no_new_joystick_vector: 71 no_new_joystick_vector:
72
73 /* Restart interrupts */
74
75 movew #0x2300,sr
76
77 rts
78
79 /*--- Vector restorer ---*/
80
81 _SDL_AtariXbios_Restore:
82 movel sp@(4),a0
83
84 /* Stop interrupts */
85
86 movew #0x2700,sr
87
88 /* Restore mouse vector */
89
90 movel oldmousevector,d0
91 beqs no_restore_mouse
92 movel d0,a0@(16)
93 no_restore_mouse:
94
95 /* Restore joystick vector */
96
97 movel oldjoystickvector,d0
98 beqs no_restore_joystick
99 movel d0,a0@(24)
100 no_restore_joystick:
69 101
70 /* Restart interrupts */ 102 /* Restart interrupts */
71 103
72 movew #0x2300,sr 104 movew #0x2300,sr
73 105
136 rts 168 rts
137 169
138 .data 170 .data
139 .even 171 .even
140 .comm _SDL_AtariXbios_joystick,2*1 172 .comm _SDL_AtariXbios_joystick,2*1
141