Decompile __osGetId
This commit is contained in:
Ryan Dwyer
parent
db632dc4cf
commit
0e8bce54ed
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@ -8,7 +8,7 @@ u16 __osSumCalc(u8 *ptr, int length);
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s32 __osIdCheckSum(u16 *ptr, u16 *csum, u16 *icsum);
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s32 __osRepairPackId(OSPfs *pfs, __OSPackId *badid, __OSPackId *newid);
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s32 __osCheckPackId(OSPfs *pfs, __OSPackId *temp);
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u32 func0004c6b4(void);
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s32 __osGetId(OSPfs *pfs);
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u32 func0004c860(void);
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u32 func0004c934(void);
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@ -489,128 +489,59 @@ s32 __osCheckPackId(OSPfs *pfs, __OSPackId *temp)
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return 0;
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}
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GLOBAL_ASM(
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glabel func0004c6b4
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/* 4c6b4: 27bdff90 */ addiu $sp,$sp,-112
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/* 4c6b8: afbf001c */ sw $ra,0x1c($sp)
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/* 4c6bc: afb10018 */ sw $s1,0x18($sp)
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/* 4c6c0: afb00014 */ sw $s0,0x14($sp)
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/* 4c6c4: 908e0065 */ lbu $t6,0x65($a0)
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/* 4c6c8: 00808025 */ or $s0,$a0,$zero
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/* 4c6cc: 51c00008 */ beqzl $t6,.L0004c6f0
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/* 4c6d0: 8e040004 */ lw $a0,0x4($s0)
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/* 4c6d4: 0c013378 */ jal __osPfsSelectBank
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/* 4c6d8: 00002825 */ or $a1,$zero,$zero
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/* 4c6dc: 50400004 */ beqzl $v0,.L0004c6f0
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/* 4c6e0: 8e040004 */ lw $a0,0x4($s0)
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/* 4c6e4: 1000005a */ b .L0004c850
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/* 4c6e8: 8fbf001c */ lw $ra,0x1c($sp)
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/* 4c6ec: 8e040004 */ lw $a0,0x4($s0)
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.L0004c6f0:
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/* 4c6f0: 8e050008 */ lw $a1,0x8($s0)
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/* 4c6f4: 24060001 */ addiu $a2,$zero,0x1
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/* 4c6f8: 0c012e18 */ jal __osContRamRead
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/* 4c6fc: 27a7004c */ addiu $a3,$sp,0x4c
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/* 4c700: 10400003 */ beqz $v0,.L0004c710
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/* 4c704: 27a4004c */ addiu $a0,$sp,0x4c
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/* 4c708: 10000051 */ b .L0004c850
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/* 4c70c: 8fbf001c */ lw $ra,0x1c($sp)
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.L0004c710:
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/* 4c710: 27a5006e */ addiu $a1,$sp,0x6e
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/* 4c714: 0c013041 */ jal __osIdCheckSum
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/* 4c718: 27a6006c */ addiu $a2,$sp,0x6c
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/* 4c71c: 97af006e */ lhu $t7,0x6e($sp)
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/* 4c720: 97b80068 */ lhu $t8,0x68($sp)
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/* 4c724: 27a5004c */ addiu $a1,$sp,0x4c
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/* 4c728: 00a08825 */ or $s1,$a1,$zero
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/* 4c72c: 15f80004 */ bne $t7,$t8,.L0004c740
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/* 4c730: 97b9006c */ lhu $t9,0x6c($sp)
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/* 4c734: 97a9006a */ lhu $t1,0x6a($sp)
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/* 4c738: 53290015 */ beql $t9,$t1,.L0004c790
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/* 4c73c: 962a0018 */ lhu $t2,0x18($s1)
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.L0004c740:
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/* 4c740: 0c013154 */ jal __osCheckPackId
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/* 4c744: 02002025 */ or $a0,$s0,$zero
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/* 4c748: 2401000a */ addiu $at,$zero,0xa
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/* 4c74c: 1441000b */ bne $v0,$at,.L0004c77c
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/* 4c750: 00401825 */ or $v1,$v0,$zero
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/* 4c754: 02002025 */ or $a0,$s0,$zero
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/* 4c758: 27a5004c */ addiu $a1,$sp,0x4c
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/* 4c75c: 0c013080 */ jal __osRepairPackId
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/* 4c760: 27a60028 */ addiu $a2,$sp,0x28
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/* 4c764: 10400003 */ beqz $v0,.L0004c774
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/* 4c768: 00000000 */ nop
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/* 4c76c: 10000038 */ b .L0004c850
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/* 4c770: 8fbf001c */ lw $ra,0x1c($sp)
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.L0004c774:
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/* 4c774: 10000005 */ b .L0004c78c
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/* 4c778: 27b10028 */ addiu $s1,$sp,0x28
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.L0004c77c:
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/* 4c77c: 50400004 */ beqzl $v0,.L0004c790
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/* 4c780: 962a0018 */ lhu $t2,0x18($s1)
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/* 4c784: 10000031 */ b .L0004c84c
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/* 4c788: 00601025 */ or $v0,$v1,$zero
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.L0004c78c:
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/* 4c78c: 962a0018 */ lhu $t2,0x18($s1)
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.L0004c790:
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/* 4c790: 02002025 */ or $a0,$s0,$zero
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/* 4c794: 02202825 */ or $a1,$s1,$zero
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/* 4c798: 314b0001 */ andi $t3,$t2,0x1
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/* 4c79c: 5560000d */ bnezl $t3,.L0004c7d4
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/* 4c7a0: 02202025 */ or $a0,$s1,$zero
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/* 4c7a4: 0c013080 */ jal __osRepairPackId
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/* 4c7a8: 27a60028 */ addiu $a2,$sp,0x28
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/* 4c7ac: 10400003 */ beqz $v0,.L0004c7bc
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/* 4c7b0: 97ac0040 */ lhu $t4,0x40($sp)
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/* 4c7b4: 10000026 */ b .L0004c850
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/* 4c7b8: 8fbf001c */ lw $ra,0x1c($sp)
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.L0004c7bc:
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/* 4c7bc: 318d0001 */ andi $t5,$t4,0x1
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/* 4c7c0: 15a00003 */ bnez $t5,.L0004c7d0
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/* 4c7c4: 27b10028 */ addiu $s1,$sp,0x28
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/* 4c7c8: 10000020 */ b .L0004c84c
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/* 4c7cc: 2402000b */ addiu $v0,$zero,0xb
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.L0004c7d0:
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/* 4c7d0: 02202025 */ or $a0,$s1,$zero
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.L0004c7d4:
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/* 4c7d4: 2605000c */ addiu $a1,$s0,0xc
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/* 4c7d8: 0c012c5c */ jal bcopy
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/* 4c7dc: 24060020 */ addiu $a2,$zero,0x20
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/* 4c7e0: 922e001b */ lbu $t6,0x1b($s1)
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/* 4c7e4: 24090010 */ addiu $t1,$zero,0x10
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/* 4c7e8: 240a0008 */ addiu $t2,$zero,0x8
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/* 4c7ec: ae0e004c */ sw $t6,0x4c($s0)
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/* 4c7f0: 922f001a */ lbu $t7,0x1a($s1)
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/* 4c7f4: ae090050 */ sw $t1,0x50($s0)
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/* 4c7f8: ae0a0054 */ sw $t2,0x54($s0)
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/* 4c7fc: 31e200ff */ andi $v0,$t7,0xff
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/* 4c800: 000218c0 */ sll $v1,$v0,0x3
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/* 4c804: 0002c040 */ sll $t8,$v0,0x1
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/* 4c808: 24680008 */ addiu $t0,$v1,0x8
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/* 4c80c: 27190003 */ addiu $t9,$t8,0x3
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/* 4c810: 01035821 */ addu $t3,$t0,$v1
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/* 4c814: ae190060 */ sw $t9,0x60($s0)
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/* 4c818: ae080058 */ sw $t0,0x58($s0)
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/* 4c81c: ae0b005c */ sw $t3,0x5c($s0)
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/* 4c820: 8e040004 */ lw $a0,0x4($s0)
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/* 4c824: 8e050008 */ lw $a1,0x8($s0)
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/* 4c828: 24060007 */ addiu $a2,$zero,0x7
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/* 4c82c: 2607002c */ addiu $a3,$s0,0x2c
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/* 4c830: 0c012e18 */ jal __osContRamRead
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/* 4c834: a20f0064 */ sb $t7,0x64($s0)
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/* 4c838: 50400004 */ beqzl $v0,.L0004c84c
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/* 4c83c: 00001025 */ or $v0,$zero,$zero
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/* 4c840: 10000003 */ b .L0004c850
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/* 4c844: 8fbf001c */ lw $ra,0x1c($sp)
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/* 4c848: 00001025 */ or $v0,$zero,$zero
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.L0004c84c:
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/* 4c84c: 8fbf001c */ lw $ra,0x1c($sp)
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.L0004c850:
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/* 4c850: 8fb00014 */ lw $s0,0x14($sp)
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/* 4c854: 8fb10018 */ lw $s1,0x18($sp)
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/* 4c858: 03e00008 */ jr $ra
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/* 4c85c: 27bd0070 */ addiu $sp,$sp,0x70
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);
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s32 __osGetId(OSPfs *pfs)
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{
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u16 sum;
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u16 isum;
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u8 temp[32];
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__OSPackId newid;
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s32 ret;
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__OSPackId *id;
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if (pfs->activebank != 0) {
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ERRCK(__osPfsSelectBank(pfs, 0))
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}
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ERRCK(__osContRamRead(pfs->queue, pfs->channel, 1, (u8*)temp));
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__osIdCheckSum((u16*)temp, &sum, &isum);
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id = (__OSPackId*)temp;
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if (id->checksum != sum || id->inverted_checksum != isum) {
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ret = __osCheckPackId(pfs, id);
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if (ret == PFS_ERR_ID_FATAL) {
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ERRCK(__osRepairPackId(pfs, id, &newid));
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id = &newid;
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} else if (ret != 0) {
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return ret;
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}
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}
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if ((id->deviceid & 1) == 0) {
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ERRCK(__osRepairPackId(pfs, id, &newid));
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id = &newid;
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if ((id->deviceid & 1) == 0) {
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return PFS_ERR_DEVICE;
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}
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}
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bcopy(id, pfs->id, 0x20);
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pfs->version = id->version;
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pfs->banks = id->banks;
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pfs->inode_start_page = pfs->banks * 2 + 3;
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pfs->dir_size = 16;
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pfs->inode_table = 8;
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pfs->minode_table = pfs->banks * PFS_ONE_PAGE + 8;
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pfs->dir_table = pfs->minode_table + pfs->banks * PFS_ONE_PAGE;
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ERRCK(__osContRamRead(pfs->queue, pfs->channel, 7, pfs->label));
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return 0;
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}
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GLOBAL_ASM(
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glabel func0004c860
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@ -27,7 +27,7 @@ glabel osPfsChecker
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/* 4d72c: 24010002 */ addiu $at,$zero,0x2
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/* 4d730: 14410004 */ bne $v0,$at,.L0004d744
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/* 4d734: 0040b825 */ or $s7,$v0,$zero
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/* 4d738: 0c0131ad */ jal func0004c6b4
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/* 4d738: 0c0131ad */ jal __osGetId
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/* 4d73c: 02602025 */ or $a0,$s3,$zero
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/* 4d740: 0040b825 */ or $s7,$v0,$zero
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.L0004d744:
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