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comparison src/audio/mint/SDL_mintaudio_it.S @ 2027:d48ead2d2ba5

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Save/restore FPU registers in interrupt
author Patrice Mandin <patmandin@gmail.com>
date Sat, 16 Sep 2006 16:59:46 +0000
parents c83fa1c650dd
children 29e07f91bc1f
comparison
equal deleted inserted replaced
2026:a5d0758f88d8 2027:d48ead2d2ba5
38 .globl _SDL_MintAudio_mutex 38 .globl _SDL_MintAudio_mutex
39 .globl _SDL_MintAudio_audiobuf 39 .globl _SDL_MintAudio_audiobuf
40 .globl _SDL_MintAudio_numbuf 40 .globl _SDL_MintAudio_numbuf
41 .globl _SDL_MintAudio_audiosize 41 .globl _SDL_MintAudio_audiosize
42 .globl _SDL_MintAudio_clocktics 42 .globl _SDL_MintAudio_clocktics
43 .globl _SDL_MintAudio_hasfpu
43 44
44 .globl _SDL_MintAudio_stfa 45 .globl _SDL_MintAudio_stfa
45 46
46 /* 47 /*
47 How it works: 48 How it works:
83 /* Swap buffers */ 84 /* Swap buffers */
84 eorw #1,_SDL_MintAudio_numbuf 85 eorw #1,_SDL_MintAudio_numbuf
85 86
86 moveml d0-d7/a0-a6,sp@- 87 moveml d0-d7/a0-a6,sp@-
87 88
89 /* Save FPU if needed */
90 tstw _SDL_MintAudio_hasfpu
91 beqs SDL_MintAudio_Xbios_nofpu1
92 .chip 68060
93 fsave sp@-
94 fmoveml fpcr/fpsr/fpiar,sp@-
95 fmovemx fp0-fp7,sp@-
96 .chip 68000
97 SDL_MintAudio_Xbios_nofpu1:
98
88 /* Callback */ 99 /* Callback */
89 jsr _SDL_MintAudio_Callback 100 jsr _SDL_MintAudio_Callback
101
102 /* Restore FPU if needed */
103 tstw _SDL_MintAudio_hasfpu
104 beqs SDL_MintAudio_Xbios_nofpu2
105 .chip 68060
106 fmovemx sp@+,fp0-fp7
107 fmoveml sp@+,fpcr/fpsr/fpiar
108 frestore sp@+
109 .chip 68000
110 SDL_MintAudio_Xbios_nofpu2:
90 111
91 /* Reserve space for registers */ 112 /* Reserve space for registers */
92 subl #savamt,savptr 113 subl #savamt,savptr
93 114
94 /* Set new buffer */ 115 /* Set new buffer */
135 notw _SDL_MintAudio_mutex 156 notw _SDL_MintAudio_mutex
136 157
137 /* Swap buffers */ 158 /* Swap buffers */
138 eorw #1,_SDL_MintAudio_numbuf 159 eorw #1,_SDL_MintAudio_numbuf
139 160
140 moveml d0-d7/a0-a6,sp@- 161 moveml d0-d1/a0-a1,sp@-
162
163 /* Save FPU if needed */
164 tstw _SDL_MintAudio_hasfpu
165 beqs SDL_MintAudio_Dma8_nofpu1
166 .chip 68060
167 fsave sp@-
168 fmoveml fpcr/fpsr/fpiar,sp@-
169 fmovemx fp0-fp7,sp@-
170 .chip 68000
171 SDL_MintAudio_Dma8_nofpu1:
141 172
142 /* Callback */ 173 /* Callback */
143 jsr _SDL_MintAudio_Callback 174 jsr _SDL_MintAudio_Callback
175
176 /* Restore FPU if needed */
177 tstw _SDL_MintAudio_hasfpu
178 beqs SDL_MintAudio_Dma8_nofpu2
179 .chip 68060
180 fmovemx sp@+,fp0-fp7
181 fmoveml sp@+,fpcr/fpsr/fpiar
182 frestore sp@+
183 .chip 68000
184 SDL_MintAudio_Dma8_nofpu2:
144 185
145 /* Set new buffer */ 186 /* Set new buffer */
146 187
147 moveq #0,d0 188 moveq #0,d0
148 189
167 rorl #8,d1 208 rorl #8,d1
168 moveb d1,a0@(0x11) 209 moveb d1,a0@(0x11)
169 rorl #8,d1 210 rorl #8,d1
170 moveb d1,a0@(0x0f) 211 moveb d1,a0@(0x0f)
171 212
172 moveml sp@+,d0-d7/a0-a6 213 moveml sp@+,d0-d1/a0-a1
173 214
174 clrw _SDL_MintAudio_mutex 215 clrw _SDL_MintAudio_mutex
175 SDL_MintAudio_Dma8End: 216 SDL_MintAudio_Dma8End:
176 rte 217 rte
177 218
193 /* Swap buffers */ 234 /* Swap buffers */
194 eorw #1,_SDL_MintAudio_numbuf 235 eorw #1,_SDL_MintAudio_numbuf
195 236
196 moveml d0-d7/a0-a6,sp@- 237 moveml d0-d7/a0-a6,sp@-
197 238
239 /* Save FPU if needed */
240 tstw _SDL_MintAudio_hasfpu
241 beqs SDL_MintAudio_Stfa_nofpu1
242 .chip 68060
243 fsave sp@-
244 fmoveml fpcr/fpsr/fpiar,sp@-
245 fmovemx fp0-fp7,sp@-
246 .chip 68000
247 SDL_MintAudio_Stfa_nofpu1:
248
198 /* Callback */ 249 /* Callback */
199 jsr _SDL_MintAudio_Callback 250 jsr _SDL_MintAudio_Callback
251
252 /* Restore FPU if needed */
253 tstw _SDL_MintAudio_hasfpu
254 beqs SDL_MintAudio_Stfa_nofpu2
255 .chip 68060
256 fmovemx sp@+,fp0-fp7
257 fmoveml sp@+,fpcr/fpsr/fpiar
258 frestore sp@+
259 .chip 68000
260 SDL_MintAudio_Stfa_nofpu2:
200 261
201 /* Set new buffer */ 262 /* Set new buffer */
202 263
203 moveq #0,d0 264 moveq #0,d0
204 movel _SDL_MintAudio_stfa,a1 265 movel _SDL_MintAudio_stfa,a1