mirror of https://github.com/zeldaret/oot.git
26 lines
1.1 KiB
C
26 lines
1.1 KiB
C
#ifndef PRENMI_BUFF_H
|
|
#define PRENMI_BUFF_H
|
|
|
|
#include "ultra64.h"
|
|
#include "alignment.h"
|
|
|
|
// This struct is used at osAppNMIBuffer which is not at an 8-byte aligned address. This causes an unaligned access
|
|
// crash if the OSTime variables use 64-bit load/store instructions, which is the case in any MIPS ABI other than O32
|
|
// where 64-bit load/store instructions are emulated with 2x 32-bit load/store instructions. The alignment attribute
|
|
// conveys that this structure will not always be 8-bytes aligned, allowing a modern compiler to generate non-crashing
|
|
// code for accessing these. This is not an issue in the original compiler as it only output O32 ABI code.
|
|
ALIGNED(4) typedef struct PreNmiBuff {
|
|
/* 0x00 */ u32 resetting;
|
|
/* 0x04 */ u32 resetCount;
|
|
/* 0x08 */ OSTime duration;
|
|
/* 0x10 */ OSTime resetTime;
|
|
} PreNmiBuff; // size = 0x18 (actually osAppNMIBuffer is 0x40 bytes large but the rest is unused)
|
|
|
|
extern PreNmiBuff* gAppNmiBufferPtr;
|
|
|
|
void PreNmiBuff_Init(PreNmiBuff* this);
|
|
void PreNmiBuff_SetReset(PreNmiBuff* this);
|
|
u32 PreNmiBuff_IsResetting(PreNmiBuff* this);
|
|
|
|
#endif
|