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Save/restore fpu registers if needed

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--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402089
This commit is contained in:
Patrice Mandin 2006-09-16 11:50:34 +00:00
parent 336e30592d
commit f31a930c98
1 changed files with 51 additions and 2 deletions
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53
src/audio/mint/SDL_mintaudio_it.S
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@ -40,6 +40,7 @@
.globl _SDL_MintAudio_numbuf
.globl _SDL_MintAudio_audiosize
.globl _SDL_MintAudio_clocktics
.globl _SDL_MintAudio_hasfpu
.globl _SDL_MintAudio_stfa
@ -77,7 +78,7 @@ _SDL_MintAudio_XbiosInterrupt:
/* Check if we are not already running */
tstw _SDL_MintAudio_mutex
bnes SDL_MintAudio_XbiosEnd
bne SDL_MintAudio_XbiosEnd
notw _SDL_MintAudio_mutex
/* Swap buffers */
@ -85,9 +86,25 @@ _SDL_MintAudio_XbiosInterrupt:
moveml d0-d7/a0-a6,sp@-
/* Save FPU if needed */
tstw _SDL_MintAudio_hasfpu
beqs SDL_MintAudio_Xbios_nofpu1
fsave sp@-
fmoveml fpcr/fpsr/fpiar,sp@-
fmovemx fp0-fp7,sp@-
SDL_MintAudio_Xbios_nofpu1:
/* Callback */
jsr _SDL_MintAudio_Callback
/* Restore FPU if needed */
tstw _SDL_MintAudio_hasfpu
beqs SDL_MintAudio_Xbios_nofpu2
fmovemx sp@+,fp0-fp7
fmoveml sp@+,fpcr/fpsr/fpiar
frestore sp@+
SDL_MintAudio_Xbios_nofpu2:
/* Reserve space for registers */
subl #savamt,savptr
@ -131,7 +148,7 @@ _SDL_MintAudio_Dma8Interrupt:
/* Check if we are not already running */
tstw _SDL_MintAudio_mutex
bnes SDL_MintAudio_Dma8End
bne SDL_MintAudio_Dma8End
notw _SDL_MintAudio_mutex
/* Swap buffers */
@ -139,9 +156,25 @@ _SDL_MintAudio_Dma8Interrupt:
moveml d0-d1/a0-a1,sp@-
/* Save FPU if needed */
tstw _SDL_MintAudio_hasfpu
beqs SDL_MintAudio_Dma8_nofpu1
fsave sp@-
fmoveml fpcr/fpsr/fpiar,sp@-
fmovemx fp0-fp7,sp@-
SDL_MintAudio_Dma8_nofpu1:
/* Callback */
jsr _SDL_MintAudio_Callback
/* Restore FPU if needed */
tstw _SDL_MintAudio_hasfpu
beqs SDL_MintAudio_Dma8_nofpu2
fmovemx sp@+,fp0-fp7
fmoveml sp@+,fpcr/fpsr/fpiar
frestore sp@+
SDL_MintAudio_Dma8_nofpu2:
/* Set new buffer */
moveq #0,d0
@ -195,9 +228,25 @@ _SDL_MintAudio_StfaInterrupt:
moveml d0-d7/a0-a6,sp@-
/* Save FPU if needed */
tstw _SDL_MintAudio_hasfpu
beqs SDL_MintAudio_Stfa_nofpu1
fsave sp@-
fmoveml fpcr/fpsr/fpiar,sp@-
fmovemx fp0-fp7,sp@-
SDL_MintAudio_Stfa_nofpu1:
/* Callback */
jsr _SDL_MintAudio_Callback
/* Restore FPU if needed */
tstw _SDL_MintAudio_hasfpu
beqs SDL_MintAudio_Stfa_nofpu2
fmovemx sp@+,fp0-fp7
fmoveml sp@+,fpcr/fpsr/fpiar
frestore sp@+
SDL_MintAudio_Stfa_nofpu2:
/* Set new buffer */
moveq #0,d0