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https://github.com/pmret/papermario.git
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625d7874c5
* Naming, shiftability fixes, etc * follows_vram fixes * more goods * tweesterz * agh * warnings * agh
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
#include "common.h"
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#include "nu/nusys.h"
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#include "ld_addrs.h"
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#include "mips.h"
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extern s32 obfuscated_battle_heap_create[];
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#ifdef SHIFT
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void battle_heap_create_obfuscated(void) {
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battle_heap_create();
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}
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#else
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void battle_heap_create_obfuscated(void) {
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s32(*readFunc)(OSPiHandle*, u32, u32*) = osEPiReadIo;
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s32 seed = 0x33F50000;
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s32 (*battle_heap_create)(void) = (s32 (*) (void)) obfuscated_battle_heap_create;
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u32 hash = 0;
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u32 thisInsn;
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u32* it;
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u32 prevInsn;
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readFunc(nuPiCartHandle, 0xB0000800, &thisInsn);
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seed -= thisInsn;
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prevInsn = 0;
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for (it = (u32*) general_heap_create_obfuscated_ROM_START; it < (u32*) general_heap_create_obfuscated_ROM_END; it++) {
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readFunc(nuPiCartHandle, (u32) it, &thisInsn);
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hash += LOWER(thisInsn) + UPPER(thisInsn);
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if (OPCODE(prevInsn) == LUI && (OPCODE(thisInsn) == ADDIU || OPCODE(thisInsn) == LW)) {
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if (GET_RS(thisInsn) == GET_RT(prevInsn) && GET_RS(thisInsn) == GET_RT(thisInsn)) {
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hash -= LOWER(thisInsn);
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hash -= LOWER(prevInsn);
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}
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}
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if (OPCODE(thisInsn) == JAL) {
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hash -= LOWER(thisInsn) + (UPPER(thisInsn) & 0xFC00);
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}
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prevInsn = thisInsn;
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}
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battle_heap_create += seed + 0x291993 - hash;
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// If the function's address is 0x8XXXXXXX
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if (((u32)battle_heap_create >> 0x1C) == 8) {
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battle_heap_create();
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} else {
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_heap_create(&heap_battleHead, 0x10000);
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}
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}
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#endif
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