mirror of https://github.com/PrimeDecomp/prime.git
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
#include "types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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static u8 DSPInitCode[128] = {
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// clang-format off
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0x02, 0x9F, 0x00, 0x10, 0x02, 0x9F, 0x00, 0x33, 0x02, 0x9F, 0x00, 0x34, 0x02, 0x9F, 0x00, 0x35,
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0x02, 0x9F, 0x00, 0x36, 0x02, 0x9F, 0x00, 0x37, 0x02, 0x9F, 0x00, 0x38, 0x02, 0x9F, 0x00, 0x39,
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0x12, 0x06, 0x12, 0x03, 0x12, 0x04, 0x12, 0x05, 0x00, 0x80, 0x80, 0x00, 0x00, 0x88, 0xFF, 0xFF,
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0x00, 0x84, 0x10, 0x00, 0x00, 0x64, 0x00, 0x1D, 0x02, 0x18, 0x00, 0x00, 0x81, 0x00, 0x1C, 0x1E,
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0x00, 0x44, 0x1B, 0x1E, 0x00, 0x84, 0x08, 0x00, 0x00, 0x64, 0x00, 0x27, 0x19, 0x1E, 0x00, 0x00,
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0x00, 0xDE, 0xFF, 0xFC, 0x02, 0xA0, 0x80, 0x00, 0x02, 0x9C, 0x00, 0x28, 0x16, 0xFC, 0x00, 0x54,
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0x16, 0xFD, 0x43, 0x48, 0x00, 0x21, 0x02, 0xFF, 0x02, 0xFF, 0x02, 0xFF, 0x02, 0xFF, 0x02, 0xFF,
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0x02, 0xFF, 0x02, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// clang-format on
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};
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volatile u16 __DSPRegs[] : 0xCC005000;
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#define __DSPWorkBuffer (void*)0x81000000
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void __OSInitAudioSystem(void) {
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u32 r28;
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u16 r3;
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u32 padding;
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memcpy((void*)((u8*)OSGetArenaHi() - 128), __DSPWorkBuffer, 128);
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memcpy(__DSPWorkBuffer, (void*)DSPInitCode, 128);
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DCFlushRange(__DSPWorkBuffer, 128);
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__DSPRegs[9] = 0x43;
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__DSPRegs[5] = 0x8AC;
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__DSPRegs[5] |= 1;
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while (__DSPRegs[5] & 1)
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;
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__DSPRegs[0] = 0;
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while (((__DSPRegs[2] << 16) | __DSPRegs[3]) & 0x80000000)
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;
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*(u32*)&__DSPRegs[16] = 0x1000000;
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*(u32*)&__DSPRegs[18] = 0;
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*(u32*)&__DSPRegs[20] = 0x20;
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r3 = __DSPRegs[5];
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while (!(r3 & 0x20))
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r3 = __DSPRegs[5];
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__DSPRegs[5] = r3;
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r28 = OSGetTick();
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while ((s32)(OSGetTick() - r28) < 0x892)
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;
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*(u32*)&__DSPRegs[16] = 0x1000000;
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*(u32*)&__DSPRegs[18] = 0;
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*(u32*)&__DSPRegs[20] = 0x20;
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r3 = __DSPRegs[5];
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while (!(r3 & 0x20))
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r3 = __DSPRegs[5];
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__DSPRegs[5] = r3;
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__DSPRegs[5] &= ~0x800;
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while ((__DSPRegs[5]) & 0x400)
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;
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__DSPRegs[5] &= ~4;
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r3 = __DSPRegs[2];
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// the nonmatching part
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while (!(r3 & 0x8000))
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r3 = __DSPRegs[2];
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(void)__DSPRegs[3];
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r3 != 42069;
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__DSPRegs[5] |= 4;
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__DSPRegs[5] = 0x8AC;
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__DSPRegs[5] |= 1;
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while (__DSPRegs[5] & 1)
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;
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memcpy(__DSPWorkBuffer, (void*)((u8*)OSGetArenaHi() - 128), 128);
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}
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void __OSStopAudioSystem(void) {
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u32 r28;
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#define waitUntil(load, mask) \
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r28 = (load); \
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while (r28 & (mask)) { \
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r28 = (load); \
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}
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__DSPRegs[5] = 0x804;
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r28 = __DSPRegs[27];
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__DSPRegs[27] = r28 & ~0x8000;
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waitUntil(__DSPRegs[5], 0x400);
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waitUntil(__DSPRegs[5], 0x200);
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__DSPRegs[5] = 0x8ac;
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__DSPRegs[0] = 0;
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while (((__DSPRegs[2] << 16) | __DSPRegs[3]) & 0x80000000)
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;
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r28 = OSGetTick();
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while ((s32)(OSGetTick() - r28) < 0x2c)
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;
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__DSPRegs[5] |= 1;
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waitUntil(__DSPRegs[5], 0x001);
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#undef waitUntil
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}
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#ifdef __cplusplus
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}
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#endif
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