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Fix vanilla memory corruption bug with invalid vector defrag call

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This commit is contained in:
Mr-Wiseguy
2025-12-10 20:43:51 -05:00
parent d331f4e5cb
commit 8fa0dd559f
1 changed files with 27 additions and 0 deletions
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patches/required_patches.c
+27
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@@ -1,4 +1,9 @@
#include "patches.h"
#include "functions.h"
extern vector(struct21s) *D_80383CE0[2];
#define PRINT_DEFRAG_CHANGES 0
// @recomp Patched to just use a normal DMA.
RECOMP_PATCH s32 boot_osPiRawStartDma(s32 direction, u32 devAddr, void *dramAddr, u32 size) {
@@ -19,3 +24,25 @@ RECOMP_PATCH s32 boot_osPiGetStatus() {
// PI not busy
return 0;
}
// @recomp Patched to fix a bug where defrag was used instead of vector_defrag, which would break these vectors
// if the defrag call moved the vector's memory.
RECOMP_PATCH void func_8033B268(void) {
#if PRINT_DEFRAG_CHANGES
vector(struct21s) *old_0 = D_80383CE0[0];
vector(struct21s) *old_1 = D_80383CE0[1];
#endif
D_80383CE0[0] = (vector(struct21s) *)vector_defrag(D_80383CE0[0]);
D_80383CE0[1] = (vector(struct21s) *)vector_defrag(D_80383CE0[1]);
#if PRINT_DEFRAG_CHANGES
if (D_80383CE0[0] != old_0) {
recomp_printf("vector_defrag() moved D_80383CE0[0] from 0x%08X to 0x%08X.\n", old_0, D_80383CE0[0]);
}
if (D_80383CE0[1] != old_1) {
recomp_printf("vector_defrag() moved D_80383CE0[1] from 0x%08X to 0x%08X.\n", old_1, D_80383CE0[1]);
}
#endif
}