88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
#include <ultra64.h>
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#include "functions.h"
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#include "variables.h"
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//THIS VALUE
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#ifndef CORE2_CODE_CRC2
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#define CORE2_CODE_CRC2 0x9E44C2DC
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#endif
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// bk_boot segment start (skipping entry function)
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extern u8 boot_bk_boot_ROM_START[];
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// bk_boot segment end
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extern u8 boot_bk_boot_ROM_END[];
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extern u8 crc_ROM_START[];
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// bk_boot segment crc next word
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s32 D_803727F0 = 0;
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s32 D_803727F4 = CORE2_CODE_CRC2;
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s32 D_803727F8 = 0;
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s32 D_803727FC = 0;
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// bk_boot segment crc values
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s32 D_80372800 = 0;
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s32 D_80372804 = 0;
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// bk_boot segment crc remaining words
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s32 D_80372808 = 0;
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// init bk_boot crc
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void func_80356580(void) {
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D_803727FC = (s32) boot_bk_boot_ROM_START;
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D_80372800 = 0;
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D_80372804 = -1;
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D_80372808 = (s32) (boot_bk_boot_ROM_END - boot_bk_boot_ROM_START);
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}
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// advance bk_boot crc by one word
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s32 func_803565BC(void) {
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u32 crc1;
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u32 crc2;
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u8 romBytes[4];
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u8 curByte;
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if (D_803727FC != 0) {
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if (D_80372808 != 0) {
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crc1 = D_80372800;
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crc2 = D_80372804;
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osPiReadIo(D_803727FC, (u32*)romBytes);
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curByte = romBytes[0];
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crc1 += curByte;
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crc2 ^= curByte << (crc1 & 0x17);
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curByte = romBytes[1];
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crc1 += curByte;
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crc2 ^= curByte << (crc1 & 0x17);
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curByte = romBytes[2];
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crc1 += curByte;
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crc2 ^= curByte << (crc1 & 0x17);
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curByte = romBytes[3];
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crc1 += curByte;
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crc2 ^= curByte << (crc1 & 0x17);
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D_80372800 = crc1;
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D_80372804 = crc2;
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D_803727FC = D_803727FC + 4;
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D_80372808 = D_80372808 - 4;
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} else {
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D_803727FC = 0;
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osPiReadIo((u32)crc_ROM_START + 0, &crc1);
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if (crc1 != D_80372800)
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return 0;
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osPiReadIo((u32)crc_ROM_START + 4, &crc2);
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if (crc2 != D_80372804)
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return 0;
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}
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}
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return 1;
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}
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void func_80356714(void) {
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func_80356580();
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}
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void func_80356734(void) {
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func_803565BC();
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if (func_803565BC() == 0) {
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ability_setAllLearned(0x10);
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}
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}
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