168 lines
3.3 KiB
C
168 lines
3.3 KiB
C
#include "libultra_internal.h"
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#include "osContInternal.h"
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#ifndef AVOID_UB
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u32 D_80365E00[15];
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u32 D_80365E3C;
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#else
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// Certain code accesses the 16th element (D_80365E3C) in this array, making a seperate
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// definition UB when gcc rearranges those.
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u32 D_80365E00[16];
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#endif
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extern u8 D_80365D20;
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typedef struct {
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u16 unk00;
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u8 unk02;
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u8 unk03;
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} unkStruct;
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typedef struct {
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u8 unk00;
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u8 unk01;
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u8 unk02;
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u8 unk03;
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u8 unk04;
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u8 unk05;
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u8 unk06;
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u8 unk07;
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} unkStruct3;
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typedef struct {
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u8 unk00;
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u8 unk01;
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u8 unk02;
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u8 unk03;
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unkStruct3 unk04;
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} unkStruct2;
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s32 __osEepStatus(OSMesgQueue *, unkStruct *);
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s32 __osPackEepWriteData(u8, u8 *);
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s32 osEepromWrite(OSMesgQueue *mq, u8 address, u8 *buffer) {
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s32 sp34;
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s32 sp30;
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u8 *sp2c;
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unkStruct2 sp20;
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unkStruct sp1c;
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sp34 = 0;
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sp2c = (u8 *) &D_80365E00;
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if (address > 0x40) {
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return -1;
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}
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__osSiGetAccess();
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sp34 = __osEepStatus(mq, &sp1c);
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if (sp34 != 0 || sp1c.unk00 != 0x8000) {
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return 8;
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}
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while (sp1c.unk02 & 0x80) {
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__osEepStatus(mq, &sp1c);
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}
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__osPackEepWriteData(address, buffer);
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sp34 = __osSiRawStartDma(OS_WRITE, &D_80365E00);
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osRecvMesg(mq, NULL, OS_MESG_BLOCK);
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for (sp30 = 0; sp30 < 0x10; sp30++) {
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(D_80365E00)[sp30] = 255;
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}
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D_80365E3C = 0;
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sp34 = __osSiRawStartDma(OS_READ, D_80365E00);
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D_80365D20 = 5;
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osRecvMesg(mq, NULL, OS_MESG_BLOCK);
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for (sp30 = 0; sp30 < 4; sp30++) {
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sp2c++;
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}
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sp20 = *(unkStruct2 *) sp2c;
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sp34 = (sp20.unk01 & 0xc0) >> 4;
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__osSiRelAccess();
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return sp34;
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}
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s32 __osPackEepWriteData(u8 address, u8 *buffer) {
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u8 *sp14;
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unkStruct2 sp8;
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s32 sp4;
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sp14 = (u8 *) &D_80365E00;
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for (sp4 = 0; sp4 < 0x10; sp4++) {
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D_80365E00[sp4] = 255;
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}
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D_80365E3C = 1;
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sp8.unk00 = 10;
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sp8.unk01 = 1;
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sp8.unk02 = 5;
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sp8.unk03 = address;
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for (sp4 = 0; sp4 < 8; sp4++) {
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((u8 *) &sp8.unk04)[sp4] = *buffer++;
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}
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for (sp4 = 0; sp4 < 4; sp4++) {
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*sp14++ = 0;
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}
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*(unkStruct2 *) sp14 = sp8;
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sp14 += 0xc;
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*sp14 = 254;
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}
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s32 __osEepStatus(OSMesgQueue *a0, unkStruct *a1) {
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u32 sp2c = 0;
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s32 sp28;
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u8 *sp24 = (u8 *) D_80365E00;
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unkStruct3 sp1c;
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for (sp28 = 0; sp28 < 0x10; sp28++) {
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D_80365E00[sp28] = 0;
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}
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D_80365E3C = 1;
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sp24 = (u8 *) D_80365E00;
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for (sp28 = 0; sp28 < 4; sp28++) {
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*sp24++ = 0;
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}
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sp1c.unk00 = 255;
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sp1c.unk01 = 1;
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sp1c.unk02 = 3;
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sp1c.unk03 = 0;
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sp1c.unk04 = 255;
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sp1c.unk05 = 255;
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sp1c.unk06 = 255;
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sp1c.unk07 = 255;
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*(unkStruct3 *) sp24 = sp1c;
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sp24 += 8;
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sp24[0] = 254;
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sp2c = __osSiRawStartDma(OS_WRITE, D_80365E00);
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osRecvMesg(a0, NULL, OS_MESG_BLOCK);
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D_80365D20 = 5;
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sp2c = __osSiRawStartDma(OS_READ, D_80365E00);
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osRecvMesg(a0, NULL, OS_MESG_BLOCK);
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if (sp2c != 0) {
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return sp2c;
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}
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sp24 = (u8 *) D_80365E00;
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for (sp28 = 0; sp28 < 4; sp28++) {
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*sp24++ = 0;
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}
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sp1c = *(unkStruct3 *) sp24;
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a1->unk03 = (sp1c.unk02 & 0xc0) >> 4;
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a1->unk00 = (sp1c.unk05 << 8) | sp1c.unk04;
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a1->unk02 = sp1c.unk06;
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if (a1->unk03 != 0) {
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return a1->unk03;
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}
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return 0;
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}
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