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