Mercurial > sdl-ios-xcode
changeset 2027:d48ead2d2ba5
Save/restore FPU registers in interrupt
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Sat, 16 Sep 2006 16:59:46 +0000 |
| parents | a5d0758f88d8 |
| children | 6dbe2a67b23b |
| files | src/audio/mint/SDL_mintaudio.c src/audio/mint/SDL_mintaudio.h src/audio/mint/SDL_mintaudio_dma8.c src/audio/mint/SDL_mintaudio_gsxb.c src/audio/mint/SDL_mintaudio_it.S src/audio/mint/SDL_mintaudio_mcsn.c src/audio/mint/SDL_mintaudio_stfa.c src/audio/mint/SDL_mintaudio_xbios.c |
| diffstat | 8 files changed, 95 insertions(+), 2 deletions(-) [+] |
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--- a/src/audio/mint/SDL_mintaudio.c Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio.c Sat Sep 16 16:59:46 2006 +0000 @@ -145,6 +145,26 @@ return MINTAUDIO_freqcount - 1; } +/* Check if FPU is present */ +void SDL_MintAudio_CheckFpu(void) +{ + unsigned long cookie_fpu; + + SDL_MintAudio_hasfpu = 0; + if (Getcookie(C__FPU, &cookie_fpu) != C_FOUND) { + return; + } + switch ((cookie_fpu>>16)&0xfffe) { + case 2: + case 4: + case 6: + case 8: + case 16: + SDL_MintAudio_hasfpu = 1; + break; + } +} + /* The thread function, used under MiNT with xbios */ int SDL_MintAudio_Thread(long param)
--- a/src/audio/mint/SDL_mintaudio.h Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio.h Sat Sep 16 16:59:46 2006 +0000 @@ -128,6 +128,7 @@ extern volatile unsigned short SDL_MintAudio_mutex; extern cookie_stfa_t *SDL_MintAudio_stfa; extern volatile unsigned long SDL_MintAudio_clocktics; +extern unsigned short SDL_MintAudio_hasfpu; /* To preserve fpu registers if needed */ /* MiNT thread variables */ extern SDL_bool SDL_MintAudio_mint_present; @@ -140,6 +141,7 @@ void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock, Uint32 prediv, int gpio_bits); int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq); +void SDL_MintAudio_CheckFpu(void); /* MiNT thread functions */ int SDL_MintAudio_Thread(long param);
--- a/src/audio/mint/SDL_mintaudio_dma8.c Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio_dma8.c Sat Sep 16 16:59:46 2006 +0000 @@ -367,6 +367,8 @@ DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + SDL_MintAudio_CheckFpu(); + /* Setup audio hardware */ Mint_InitAudio(this, spec);
--- a/src/audio/mint/SDL_mintaudio_gsxb.c Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio_gsxb.c Sat Sep 16 16:59:46 2006 +0000 @@ -438,6 +438,8 @@ DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + SDL_MintAudio_CheckFpu(); + /* Setup audio hardware */ Mint_InitAudio(this, spec);
--- a/src/audio/mint/SDL_mintaudio_it.S Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio_it.S Sat Sep 16 16:59:46 2006 +0000 @@ -40,6 +40,7 @@ .globl _SDL_MintAudio_numbuf .globl _SDL_MintAudio_audiosize .globl _SDL_MintAudio_clocktics + .globl _SDL_MintAudio_hasfpu .globl _SDL_MintAudio_stfa @@ -85,9 +86,29 @@ moveml d0-d7/a0-a6,sp@- + /* Save FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Xbios_nofpu1 + .chip 68060 + fsave sp@- + fmoveml fpcr/fpsr/fpiar,sp@- + fmovemx fp0-fp7,sp@- + .chip 68000 +SDL_MintAudio_Xbios_nofpu1: + /* Callback */ jsr _SDL_MintAudio_Callback + /* Restore FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Xbios_nofpu2 + .chip 68060 + fmovemx sp@+,fp0-fp7 + fmoveml sp@+,fpcr/fpsr/fpiar + frestore sp@+ + .chip 68000 +SDL_MintAudio_Xbios_nofpu2: + /* Reserve space for registers */ subl #savamt,savptr @@ -137,11 +158,31 @@ /* Swap buffers */ eorw #1,_SDL_MintAudio_numbuf - moveml d0-d7/a0-a6,sp@- + moveml d0-d1/a0-a1,sp@- + + /* Save FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Dma8_nofpu1 + .chip 68060 + fsave sp@- + fmoveml fpcr/fpsr/fpiar,sp@- + fmovemx fp0-fp7,sp@- + .chip 68000 +SDL_MintAudio_Dma8_nofpu1: /* Callback */ jsr _SDL_MintAudio_Callback + /* Restore FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Dma8_nofpu2 + .chip 68060 + fmovemx sp@+,fp0-fp7 + fmoveml sp@+,fpcr/fpsr/fpiar + frestore sp@+ + .chip 68000 +SDL_MintAudio_Dma8_nofpu2: + /* Set new buffer */ moveq #0,d0 @@ -169,7 +210,7 @@ rorl #8,d1 moveb d1,a0@(0x0f) - moveml sp@+,d0-d7/a0-a6 + moveml sp@+,d0-d1/a0-a1 clrw _SDL_MintAudio_mutex SDL_MintAudio_Dma8End: @@ -195,9 +236,29 @@ moveml d0-d7/a0-a6,sp@- + /* Save FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Stfa_nofpu1 + .chip 68060 + fsave sp@- + fmoveml fpcr/fpsr/fpiar,sp@- + fmovemx fp0-fp7,sp@- + .chip 68000 +SDL_MintAudio_Stfa_nofpu1: + /* Callback */ jsr _SDL_MintAudio_Callback + /* Restore FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Stfa_nofpu2 + .chip 68060 + fmovemx sp@+,fp0-fp7 + fmoveml sp@+,fpcr/fpsr/fpiar + frestore sp@+ + .chip 68000 +SDL_MintAudio_Stfa_nofpu2: + /* Set new buffer */ moveq #0,d0
--- a/src/audio/mint/SDL_mintaudio_mcsn.c Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio_mcsn.c Sat Sep 16 16:59:46 2006 +0000 @@ -415,6 +415,8 @@ DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + SDL_MintAudio_CheckFpu(); + /* Setup audio hardware */ Mint_InitAudio(this, spec);
--- a/src/audio/mint/SDL_mintaudio_stfa.c Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio_stfa.c Sat Sep 16 16:59:46 2006 +0000 @@ -332,6 +332,8 @@ DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + SDL_MintAudio_CheckFpu(); + /* Setup audio hardware */ Mint_InitAudio(this, spec);
--- a/src/audio/mint/SDL_mintaudio_xbios.c Wed Sep 13 04:47:46 2006 +0000 +++ b/src/audio/mint/SDL_mintaudio_xbios.c Sat Sep 16 16:59:46 2006 +0000 @@ -519,6 +519,8 @@ DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + SDL_MintAudio_CheckFpu(); + /* Setup audio hardware */ Mint_InitAudio(this, spec);