mirror of
https://gitlab.com/ryandwyer/perfect-dark
synced 2026-08-09 02:26:10 -04:00
Ryan Dwyer
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
#include <libultra_internal.h>
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#include "data.h"
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#include "bss.h"
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typedef struct {
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unsigned int inst1;
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unsigned int inst2;
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unsigned int inst3;
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unsigned int inst4;
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} __osExceptionVector;
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extern __osExceptionVector __osExceptionPreamble;
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extern u32 osAppNMIBuffer;
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u32 __osFinalRom;
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OSTime osClockRate = 62500000;
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#if !PAL
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s32 osViClock = VI_NTSC_CLOCK;
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#endif
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u32 _osShutdown = 0;
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u32 __osGlobalIntMask = OS_IM_ALL;
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#if VERSION < VERSION_PAL_FINAL
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u32 var8005cf74 = 0;
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u32 var8005cf78 = 0;
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u32 var8005cf7c = 0;
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#endif
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void osInitialize(void)
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{
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u32 pifdata;
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__osFinalRom = TRUE;
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__osSetSR(__osGetSR() | SR_CU1);
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__osSetFpcCsr(FPCSR_FS | FPCSR_EV);
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while (__osSiRawReadIo(PIF_RAM_END - 3, &pifdata));
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while (__osSiRawWriteIo(PIF_RAM_END - 3, pifdata | 8));
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*(__osExceptionVector *)UT_VEC = __osExceptionPreamble;
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*(__osExceptionVector *)XUT_VEC = __osExceptionPreamble;
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*(__osExceptionVector *)ECC_VEC = __osExceptionPreamble;
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*(__osExceptionVector *)E_VEC = __osExceptionPreamble;
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osWritebackDCache((void *)UT_VEC, E_VEC - UT_VEC + sizeof(__osExceptionVector));
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osInvalICache((void *)UT_VEC, E_VEC - UT_VEC + sizeof(__osExceptionVector));
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func00005dc0();
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osMapTLBRdb();
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#if !PAL
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osClockRate = osClockRate * 3 / 4;
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#endif
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if (osResetType == RESET_TYPE_COLD_RESET) {
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bzero(&osAppNMIBuffer, 0x40);
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}
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#if !PAL
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if (osTvType == OS_TV_PAL) {
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osViClock = VI_PAL_CLOCK;
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} else if (osTvType == OS_TV_MPAL) {
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osViClock = VI_NTSC_CLOCK;
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} else {
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osViClock = VI_NTSC_CLOCK;
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}
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#endif
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if (__osGetCause() & CAUSE_IP5) {
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while (1);
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}
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*(u32 *)PHYS_TO_K1(AI_CONTROL_REG) = 1;
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*(u32 *)PHYS_TO_K1(AI_DACRATE_REG) = 0x3fff;
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*(u32 *)PHYS_TO_K1(AI_BITRATE_REG) = 0xf;
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}
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GLOBAL_ASM(
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glabel func00005dc0
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/* 5dc0: 3c028009 */ lui $v0,%hi(CartRomHandle)
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/* 5dc4: 244202a0 */ addiu $v0,$v0,%lo(CartRomHandle)
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/* 5dc8: 24030007 */ addiu $v1,$zero,0x7
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/* 5dcc: a0430004 */ sb $v1,0x4($v0)
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/* 5dd0: 3c0ea460 */ lui $t6,0xa460
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/* 5dd4: 8dcf0014 */ lw $t7,0x14($t6)
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/* 5dd8: 3c18a460 */ lui $t8,0xa460
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/* 5ddc: 3c08a460 */ lui $t0,0xa460
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/* 5de0: a04f0005 */ sb $t7,0x5($v0)
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/* 5de4: 8f190018 */ lw $t9,0x18($t8)
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/* 5de8: 3c0aa460 */ lui $t2,0xa460
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/* 5dec: 3c048009 */ lui $a0,%hi(LeoDiskHandle)
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/* 5df0: a0590008 */ sb $t9,0x8($v0)
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/* 5df4: 8d09001c */ lw $t1,0x1c($t0)
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/* 5df8: 24840318 */ addiu $a0,$a0,%lo(LeoDiskHandle)
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/* 5dfc: 3c0ca460 */ lui $t4,0xa460
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/* 5e00: a0490006 */ sb $t1,0x6($v0)
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/* 5e04: 8d4b0020 */ lw $t3,0x20($t2)
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/* 5e08: a0830004 */ sb $v1,0x4($a0)
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/* 5e0c: a04b0007 */ sb $t3,0x7($v0)
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/* 5e10: 8d8d0024 */ lw $t5,0x24($t4)
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/* 5e14: a08d0005 */ sb $t5,0x5($a0)
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/* 5e18: 8dcf0028 */ lw $t7,0x28($t6)
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/* 5e1c: a08f0008 */ sb $t7,0x8($a0)
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/* 5e20: 8f19002c */ lw $t9,0x2c($t8)
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/* 5e24: a0990006 */ sb $t9,0x6($a0)
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/* 5e28: 8d090030 */ lw $t1,0x30($t0)
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/* 5e2c: 03e00008 */ jr $ra
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/* 5e30: a0890007 */ sb $t1,0x7($a0)
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);
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