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perfect_dark/src/lib/lib_4c090.c

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#include <ultra64.h>
#include "libultra_internal.h"
#include "constants.h"
#include "bss.h"
#include "lib/lib_4b170.h"
#include "lib/lib_4c090.h"
#include "lib/lib_4d6f0.h"
#include "data.h"
#include "types.h"
s32 g_PfsPrevChannel = -1;
u8 g_PfsPrevBank = 250;
u16 __osSumCalc(u8 *ptr, int length)
{
int i;
u32 sum;
u8 *tmp;
sum = 0;
tmp = ptr;
for (i = 0; i < length; i++) {
sum += *tmp++;
}
return sum & 0xffff;
}
s32 __osIdCheckSum(u16 *ptr, u16 *csum, u16 *icsum)
{
u16 data = 0;
u32 i;
*csum = *icsum = 0;
for (i = 0; i < ((sizeof(__OSPackId) - sizeof(u32)) / sizeof(u8)); i += 2) {
data = *(u16 *)((u32)ptr + i);
*csum += data;
*icsum += ~data;
}
return 0;
}
GLOBAL_ASM(
glabel __osRepairPackId
/* 4c200: 27bdff60 */ addiu $sp,$sp,-160
/* 4c204: afbf003c */ sw $ra,0x3c($sp)
/* 4c208: afb60038 */ sw $s6,0x38($sp)
/* 4c20c: afb50034 */ sw $s5,0x34($sp)
/* 4c210: afb40030 */ sw $s4,0x30($sp)
/* 4c214: afb3002c */ sw $s3,0x2c($sp)
/* 4c218: afb20028 */ sw $s2,0x28($sp)
/* 4c21c: afb10024 */ sw $s1,0x24($sp)
/* 4c220: afb00020 */ sw $s0,0x20($sp)
/* 4c224: 240effff */ addiu $t6,$zero,-1
/* 4c228: 00809025 */ or $s2,$a0,$zero
/* 4c22c: 00c0a025 */ or $s4,$a2,$zero
/* 4c230: 00a0b025 */ or $s6,$a1,$zero
/* 4c234: 00009825 */ or $s3,$zero,$zero
/* 4c238: 0c012144 */ jal osGetCount
/* 4c23c: acce0000 */ sw $t6,0x0($a2)
/* 4c240: ae820004 */ sw $v0,0x4($s4)
/* 4c244: 8ed9000c */ lw $t9,0xc($s6)
/* 4c248: 8ed80008 */ lw $t8,0x8($s6)
/* 4c24c: 02402025 */ or $a0,$s2,$zero
/* 4c250: ae99000c */ sw $t9,0xc($s4)
/* 4c254: ae980008 */ sw $t8,0x8($s4)
/* 4c258: 8ec90014 */ lw $t1,0x14($s6)
/* 4c25c: 8ec80010 */ lw $t0,0x10($s6)
/* 4c260: ae890014 */ sw $t1,0x14($s4)
/* 4c264: ae880010 */ sw $t0,0x10($s4)
/* 4c268: 924f0065 */ lbu $t7,0x65($s2)
/* 4c26c: 51e00008 */ beqzl $t7,.L0004c290
/* 4c270: 27b1007c */ addiu $s1,$sp,0x7c
/* 4c274: 0c013378 */ jal __osPfsSelectBank
/* 4c278: 00002825 */ or $a1,$zero,$zero
/* 4c27c: 50400004 */ beqzl $v0,.L0004c290
/* 4c280: 27b1007c */ addiu $s1,$sp,0x7c
/* 4c284: 100000a9 */ b .L0004c52c
/* 4c288: 8fbf003c */ lw $ra,0x3c($sp)
/* 4c28c: 27b1007c */ addiu $s1,$sp,0x7c
.L0004c290:
/* 4c290: 0220a825 */ or $s5,$s1,$zero
/* 4c294: 27b0009c */ addiu $s0,$sp,0x9c
/* 4c298: 02402025 */ or $a0,$s2,$zero
.L0004c29c:
/* 4c29c: 0c013378 */ jal __osPfsSelectBank
/* 4c2a0: 326500ff */ andi $a1,$s3,0xff
/* 4c2a4: 10400003 */ beqz $v0,.L0004c2b4
/* 4c2a8: 00003025 */ or $a2,$zero,$zero
/* 4c2ac: 1000009f */ b .L0004c52c
/* 4c2b0: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c2b4:
/* 4c2b4: 8e440004 */ lw $a0,0x4($s2)
/* 4c2b8: 8e450008 */ lw $a1,0x8($s2)
/* 4c2bc: 0c012e18 */ jal __osContRamRead
/* 4c2c0: 02a03825 */ or $a3,$s5,$zero
/* 4c2c4: 10400003 */ beqz $v0,.L0004c2d4
/* 4c2c8: 366b0080 */ ori $t3,$s3,0x80
/* 4c2cc: 10000097 */ b .L0004c52c
/* 4c2d0: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c2d4:
/* 4c2d4: a3ab007c */ sb $t3,0x7c($sp)
/* 4c2d8: 27a2007d */ addiu $v0,$sp,0x7d
.L0004c2dc:
/* 4c2dc: 904c0000 */ lbu $t4,0x0($v0)
/* 4c2e0: 24420001 */ addiu $v0,$v0,0x1
/* 4c2e4: 0050082b */ sltu $at,$v0,$s0
/* 4c2e8: 01806827 */ nor $t5,$t4,$zero
/* 4c2ec: 1420fffb */ bnez $at,.L0004c2dc
/* 4c2f0: a04dffff */ sb $t5,-0x1($v0)
/* 4c2f4: 8e440004 */ lw $a0,0x4($s2)
/* 4c2f8: 8e450008 */ lw $a1,0x8($s2)
/* 4c2fc: afa00010 */ sw $zero,0x10($sp)
/* 4c300: 00003025 */ or $a2,$zero,$zero
/* 4c304: 0c012d84 */ jal __osContRamWrite
/* 4c308: 02a03825 */ or $a3,$s5,$zero
/* 4c30c: 10400003 */ beqz $v0,.L0004c31c
/* 4c310: 00003025 */ or $a2,$zero,$zero
/* 4c314: 10000085 */ b .L0004c52c
/* 4c318: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c31c:
/* 4c31c: 8e440004 */ lw $a0,0x4($s2)
/* 4c320: 8e450008 */ lw $a1,0x8($s2)
/* 4c324: 0c012e18 */ jal __osContRamRead
/* 4c328: 27a7005c */ addiu $a3,$sp,0x5c
/* 4c32c: 10400003 */ beqz $v0,.L0004c33c
/* 4c330: 27a3005c */ addiu $v1,$sp,0x5c
/* 4c334: 1000007d */ b .L0004c52c
/* 4c338: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c33c:
/* 4c33c: 27a2007c */ addiu $v0,$sp,0x7c
.L0004c340:
/* 4c340: 906e0000 */ lbu $t6,0x0($v1)
/* 4c344: 90580000 */ lbu $t8,0x0($v0)
/* 4c348: 55d80006 */ bnel $t6,$t8,.L0004c364
/* 4c34c: 27b9007c */ addiu $t9,$sp,0x7c
/* 4c350: 24630001 */ addiu $v1,$v1,0x1
/* 4c354: 0071082b */ sltu $at,$v1,$s1
/* 4c358: 1420fff9 */ bnez $at,.L0004c340
/* 4c35c: 24420001 */ addiu $v0,$v0,0x1
/* 4c360: 27b9007c */ addiu $t9,$sp,0x7c
.L0004c364:
/* 4c364: 14790018 */ bne $v1,$t9,.L0004c3c8
/* 4c368: 02402025 */ or $a0,$s2,$zero
/* 4c36c: 5a600013 */ blezl $s3,.L0004c3bc
/* 4c370: 26730001 */ addiu $s3,$s3,0x1
/* 4c374: 0c013378 */ jal __osPfsSelectBank
/* 4c378: 00002825 */ or $a1,$zero,$zero
/* 4c37c: 10400003 */ beqz $v0,.L0004c38c
/* 4c380: 00003025 */ or $a2,$zero,$zero
/* 4c384: 10000069 */ b .L0004c52c
/* 4c388: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c38c:
/* 4c38c: 8e440004 */ lw $a0,0x4($s2)
/* 4c390: 8e450008 */ lw $a1,0x8($s2)
/* 4c394: 0c012e18 */ jal __osContRamRead
/* 4c398: 02a03825 */ or $a3,$s5,$zero
/* 4c39c: 10400003 */ beqz $v0,.L0004c3ac
/* 4c3a0: 93a8007c */ lbu $t0,0x7c($sp)
/* 4c3a4: 10000061 */ b .L0004c52c
/* 4c3a8: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c3ac:
/* 4c3ac: 24010080 */ addiu $at,$zero,0x80
/* 4c3b0: 55010006 */ bnel $t0,$at,.L0004c3cc
/* 4c3b4: 92490065 */ lbu $t1,0x65($s2)
/* 4c3b8: 26730001 */ addiu $s3,$s3,0x1
.L0004c3bc:
/* 4c3bc: 2a61003e */ slti $at,$s3,0x3e
/* 4c3c0: 5420ffb6 */ bnezl $at,.L0004c29c
/* 4c3c4: 02402025 */ or $a0,$s2,$zero
.L0004c3c8:
/* 4c3c8: 92490065 */ lbu $t1,0x65($s2)
.L0004c3cc:
/* 4c3cc: 02402025 */ or $a0,$s2,$zero
/* 4c3d0: 11200007 */ beqz $t1,.L0004c3f0
/* 4c3d4: 00000000 */ nop
/* 4c3d8: 0c013378 */ jal __osPfsSelectBank
/* 4c3dc: 00002825 */ or $a1,$zero,$zero
/* 4c3e0: 10400003 */ beqz $v0,.L0004c3f0
/* 4c3e4: 00000000 */ nop
/* 4c3e8: 10000050 */ b .L0004c52c
/* 4c3ec: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c3f0:
/* 4c3f0: 1a600003 */ blez $s3,.L0004c400
/* 4c3f4: 02802025 */ or $a0,$s4,$zero
/* 4c3f8: 10000002 */ b .L0004c404
/* 4c3fc: 24020001 */ addiu $v0,$zero,0x1
.L0004c400:
/* 4c400: 00001025 */ or $v0,$zero,$zero
.L0004c404:
/* 4c404: 96cf0018 */ lhu $t7,0x18($s6)
/* 4c408: a293001a */ sb $s3,0x1a($s4)
/* 4c40c: 2685001c */ addiu $a1,$s4,0x1c
/* 4c410: 31eafffe */ andi $t2,$t7,0xfffe
/* 4c414: 01425825 */ or $t3,$t2,$v0
/* 4c418: a68b0018 */ sh $t3,0x18($s4)
/* 4c41c: 92cc001b */ lbu $t4,0x1b($s6)
/* 4c420: 2686001e */ addiu $a2,$s4,0x1e
/* 4c424: 0c013041 */ jal __osIdCheckSum
/* 4c428: a28c001b */ sb $t4,0x1b($s4)
/* 4c42c: 240d0001 */ addiu $t5,$zero,0x1
/* 4c430: 240e0003 */ addiu $t6,$zero,0x3
/* 4c434: 24180004 */ addiu $t8,$zero,0x4
/* 4c438: 24190006 */ addiu $t9,$zero,0x6
/* 4c43c: a7ad0048 */ sh $t5,0x48($sp)
/* 4c440: a7ae004a */ sh $t6,0x4a($sp)
/* 4c444: a7b8004c */ sh $t8,0x4c($sp)
/* 4c448: a7b9004e */ sh $t9,0x4e($sp)
/* 4c44c: 27b00048 */ addiu $s0,$sp,0x48
/* 4c450: 27b10050 */ addiu $s1,$sp,0x50
/* 4c454: 8e440004 */ lw $a0,0x4($s2)
.L0004c458:
/* 4c458: 8e450008 */ lw $a1,0x8($s2)
/* 4c45c: 96060000 */ lhu $a2,0x0($s0)
/* 4c460: 24080001 */ addiu $t0,$zero,0x1
/* 4c464: afa80010 */ sw $t0,0x10($sp)
/* 4c468: 0c012d84 */ jal __osContRamWrite
/* 4c46c: 02803825 */ or $a3,$s4,$zero
/* 4c470: 10400003 */ beqz $v0,.L0004c480
/* 4c474: 26100002 */ addiu $s0,$s0,0x2
/* 4c478: 1000002c */ b .L0004c52c
/* 4c47c: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c480:
/* 4c480: 0211082b */ sltu $at,$s0,$s1
/* 4c484: 5420fff4 */ bnezl $at,.L0004c458
/* 4c488: 8e440004 */ lw $a0,0x4($s2)
/* 4c48c: 8e440004 */ lw $a0,0x4($s2)
/* 4c490: 8e450008 */ lw $a1,0x8($s2)
/* 4c494: 24060001 */ addiu $a2,$zero,0x1
/* 4c498: 0c012e18 */ jal __osContRamRead
/* 4c49c: 02a03825 */ or $a3,$s5,$zero
/* 4c4a0: 10400003 */ beqz $v0,.L0004c4b0
/* 4c4a4: 02801825 */ or $v1,$s4,$zero
/* 4c4a8: 10000020 */ b .L0004c52c
/* 4c4ac: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c4b0:
/* 4c4b0: 27a2007c */ addiu $v0,$sp,0x7c
/* 4c4b4: 27a4009c */ addiu $a0,$sp,0x9c
.L0004c4b8:
/* 4c4b8: 90490000 */ lbu $t1,0x0($v0)
/* 4c4bc: 906f0000 */ lbu $t7,0x0($v1)
/* 4c4c0: 512f0004 */ beql $t1,$t7,.L0004c4d4
/* 4c4c4: 904a0001 */ lbu $t2,0x1($v0)
/* 4c4c8: 10000017 */ b .L0004c528
/* 4c4cc: 2402000b */ addiu $v0,$zero,0xb
/* 4c4d0: 904a0001 */ lbu $t2,0x1($v0)
.L0004c4d4:
/* 4c4d4: 906b0001 */ lbu $t3,0x1($v1)
/* 4c4d8: 514b0004 */ beql $t2,$t3,.L0004c4ec
/* 4c4dc: 904c0002 */ lbu $t4,0x2($v0)
/* 4c4e0: 10000011 */ b .L0004c528
/* 4c4e4: 2402000b */ addiu $v0,$zero,0xb
/* 4c4e8: 904c0002 */ lbu $t4,0x2($v0)
.L0004c4ec:
/* 4c4ec: 906d0002 */ lbu $t5,0x2($v1)
/* 4c4f0: 518d0004 */ beql $t4,$t5,.L0004c504
/* 4c4f4: 904e0003 */ lbu $t6,0x3($v0)
/* 4c4f8: 1000000b */ b .L0004c528
/* 4c4fc: 2402000b */ addiu $v0,$zero,0xb
/* 4c500: 904e0003 */ lbu $t6,0x3($v0)
.L0004c504:
/* 4c504: 90780003 */ lbu $t8,0x3($v1)
/* 4c508: 24420004 */ addiu $v0,$v0,0x4
/* 4c50c: 11d80003 */ beq $t6,$t8,.L0004c51c
/* 4c510: 00000000 */ nop
/* 4c514: 10000004 */ b .L0004c528
/* 4c518: 2402000b */ addiu $v0,$zero,0xb
.L0004c51c:
/* 4c51c: 1444ffe6 */ bne $v0,$a0,.L0004c4b8
/* 4c520: 24630004 */ addiu $v1,$v1,0x4
/* 4c524: 00001025 */ or $v0,$zero,$zero
.L0004c528:
/* 4c528: 8fbf003c */ lw $ra,0x3c($sp)
.L0004c52c:
/* 4c52c: 8fb00020 */ lw $s0,0x20($sp)
/* 4c530: 8fb10024 */ lw $s1,0x24($sp)
/* 4c534: 8fb20028 */ lw $s2,0x28($sp)
/* 4c538: 8fb3002c */ lw $s3,0x2c($sp)
/* 4c53c: 8fb40030 */ lw $s4,0x30($sp)
/* 4c540: 8fb50034 */ lw $s5,0x34($sp)
/* 4c544: 8fb60038 */ lw $s6,0x38($sp)
/* 4c548: 03e00008 */ jr $ra
/* 4c54c: 27bd00a0 */ addiu $sp,$sp,0xa0
);
// Mismatch: j = 0 needs to be removed from the for loop so it uses
// the earlier assign, but this creates significantly different code.
//s32 __osRepairPackId(OSPfs *pfs, __OSPackId *badid, __OSPackId *newid)
//{
// s32 ret;
// u8 temp[32];
// u8 comp[32];
// u8 mask;
// int i;
// int j;
// u16 index[4];
//
// ret = 0;
// mask = 0;
// j = 0;
//
// newid->repaired = -1;
// newid->random = osGetCount();
// newid->serial_mid = badid->serial_mid;
// newid->serial_low = badid->serial_low;
//
// if (pfs->activebank != 0) {
// ERRCK(__osPfsSelectBank(pfs, 0));
// }
//
// for (j = 0; j < PFS_MAX_BANKS; j++) {
// ERRCK(__osPfsSelectBank(pfs, j));
//
// ERRCK(__osContRamRead(pfs->queue, pfs->channel, 0, (u8*)&temp));
//
// temp[0] = j | 0x80;
//
// for (i = 1; i < ARRLEN(temp); i++) {
// temp[i] = ~temp[i];
// }
//
// ERRCK(__osContRamWrite(pfs->queue, pfs->channel, 0, (u8*)temp, FALSE));
// ERRCK(__osContRamRead(pfs->queue, pfs->channel, 0, (u8*)&comp));
//
// for (i = 0; i < ARRLEN(temp); i++) {
// if (comp[i] != temp[i]) {
// break;
// }
// }
//
// if (i != ARRLEN(temp)) {
// break;
// }
//
// if (j > 0) {
// ERRCK(__osPfsSelectBank(pfs, 0));
//
// ERRCK(__osContRamRead(pfs->queue, pfs->channel, 0, (u8*)temp));
//
// if (temp[0] != 128) {
// break;
// }
// }
// }
//
// if (pfs->activebank != 0) {
// ERRCK(__osPfsSelectBank(pfs, 0));
// }
//
// if (j > 0) {
// mask = 1;
// } else {
// mask = 0;
// }
//
// newid->deviceid = (badid->deviceid & (u16)~1) | mask;
// newid->banks = j;
// newid->version = badid->version;
//
// __osIdCheckSum((u16*)newid, &newid->checksum, &newid->inverted_checksum);
//
// index[0] = 1;
// index[1] = 3;
// index[2] = 4;
// index[3] = 6;
//
// for (i = 0; i < ARRLEN(index); i++) {
// ERRCK(__osContRamWrite(pfs->queue, pfs->channel, index[i], (u8*)newid, TRUE));
// }
//
// ERRCK(__osContRamRead(pfs->queue, pfs->channel, 1, (u8*)temp));
//
// for (i = 0; i < ARRLEN(temp); i++) {
// if (temp[i] != ((u8 *)newid)[i]) {
// return PFS_ERR_DEVICE;
// }
// }
//
// return 0;
//}
s32 __osCheckPackId(OSPfs *pfs, __OSPackId *temp)
{
u16 index[4];
s32 ret;
u16 sum;
u16 isum;
int i;
int j;
ret = 0;
if (pfs->activebank != 0) {
ERRCK(__osPfsSelectBank(pfs, 0));
}
index[0] = 1;
index[1] = 3;
index[2] = 4;
index[3] = 6;
for (i = 1; i < ARRLEN(index); i++) {
ERRCK(__osContRamRead(pfs->queue, pfs->channel, index[i], (u8*)temp));
__osIdCheckSum((u16 *)temp, &sum, &isum);
if (temp->checksum == sum && temp->inverted_checksum == isum) {
break;
}
}
if (i == ARRLEN(index)) {
return PFS_ERR_ID_FATAL;
}
for (j = 0; j < ARRLEN(index); j++) {
if (j != i) {
ERRCK(__osContRamWrite(pfs->queue, pfs->channel, index[j], (u8*)temp, TRUE));
}
}
return 0;
}
s32 __osGetId(OSPfs *pfs)
{
u16 sum;
u16 isum;
u8 temp[32];
__OSPackId newid;
s32 ret;
__OSPackId *id;
if (pfs->activebank != 0) {
ERRCK(__osPfsSelectBank(pfs, 0))
}
ERRCK(__osContRamRead(pfs->queue, pfs->channel, 1, (u8*)temp));
__osIdCheckSum((u16*)temp, &sum, &isum);
id = (__OSPackId*)temp;
if (id->checksum != sum || id->inverted_checksum != isum) {
ret = __osCheckPackId(pfs, id);
if (ret == PFS_ERR_ID_FATAL) {
ERRCK(__osRepairPackId(pfs, id, &newid));
id = &newid;
} else if (ret != 0) {
return ret;
}
}
if ((id->deviceid & 1) == 0) {
ERRCK(__osRepairPackId(pfs, id, &newid));
id = &newid;
if ((id->deviceid & 1) == 0) {
return PFS_ERR_DEVICE;
}
}
bcopy(id, pfs->id, 0x20);
pfs->version = id->version;
pfs->banks = id->banks;
pfs->inode_start_page = pfs->banks * 2 + 3;
pfs->dir_size = 16;
pfs->inode_table = 8;
pfs->minode_table = pfs->banks * PFS_ONE_PAGE + 8;
pfs->dir_table = pfs->minode_table + pfs->banks * PFS_ONE_PAGE;
ERRCK(__osContRamRead(pfs->queue, pfs->channel, 7, pfs->label));
return 0;
}
GLOBAL_ASM(
glabel func0004c860
/* 4c860: 27bdffb8 */ addiu $sp,$sp,-72
/* 4c864: afbf001c */ sw $ra,0x1c($sp)
/* 4c868: afb00018 */ sw $s0,0x18($sp)
/* 4c86c: 908e0065 */ lbu $t6,0x65($a0)
/* 4c870: 00808025 */ or $s0,$a0,$zero
/* 4c874: 51c0000f */ beqzl $t6,.L0004c8b4
/* 4c878: 8e040004 */ lw $a0,0x4($s0)
/* 4c87c: 0c013378 */ jal __osPfsSelectBank
/* 4c880: 00002825 */ or $a1,$zero,$zero
/* 4c884: 24010002 */ addiu $at,$zero,0x2
/* 4c888: 14410005 */ bne $v0,$at,.L0004c8a0
/* 4c88c: 00401825 */ or $v1,$v0,$zero
/* 4c890: 02002025 */ or $a0,$s0,$zero
/* 4c894: 0c013378 */ jal __osPfsSelectBank
/* 4c898: 00002825 */ or $a1,$zero,$zero
/* 4c89c: 00401825 */ or $v1,$v0,$zero
.L0004c8a0:
/* 4c8a0: 50400004 */ beqzl $v0,.L0004c8b4
/* 4c8a4: 8e040004 */ lw $a0,0x4($s0)
/* 4c8a8: 1000001d */ b .L0004c920
/* 4c8ac: 00601025 */ or $v0,$v1,$zero
/* 4c8b0: 8e040004 */ lw $a0,0x4($s0)
.L0004c8b4:
/* 4c8b4: 8e050008 */ lw $a1,0x8($s0)
/* 4c8b8: 24060001 */ addiu $a2,$zero,0x1
/* 4c8bc: 0c012e18 */ jal __osContRamRead
/* 4c8c0: 27a70028 */ addiu $a3,$sp,0x28
/* 4c8c4: 1040000d */ beqz $v0,.L0004c8fc
/* 4c8c8: 24010002 */ addiu $at,$zero,0x2
/* 4c8cc: 10410003 */ beq $v0,$at,.L0004c8dc
/* 4c8d0: 24060001 */ addiu $a2,$zero,0x1
/* 4c8d4: 10000013 */ b .L0004c924
/* 4c8d8: 8fbf001c */ lw $ra,0x1c($sp)
.L0004c8dc:
/* 4c8dc: 8e040004 */ lw $a0,0x4($s0)
/* 4c8e0: 8e050008 */ lw $a1,0x8($s0)
/* 4c8e4: 0c012e18 */ jal __osContRamRead
/* 4c8e8: 27a70028 */ addiu $a3,$sp,0x28
/* 4c8ec: 50400004 */ beqzl $v0,.L0004c900
/* 4c8f0: 2604000c */ addiu $a0,$s0,0xc
/* 4c8f4: 1000000b */ b .L0004c924
/* 4c8f8: 8fbf001c */ lw $ra,0x1c($sp)
.L0004c8fc:
/* 4c8fc: 2604000c */ addiu $a0,$s0,0xc
.L0004c900:
/* 4c900: 27a50028 */ addiu $a1,$sp,0x28
/* 4c904: 0c013824 */ jal func0004e090
/* 4c908: 24060020 */ addiu $a2,$zero,0x20
/* 4c90c: 50400004 */ beqzl $v0,.L0004c920
/* 4c910: 00001025 */ or $v0,$zero,$zero
/* 4c914: 10000002 */ b .L0004c920
/* 4c918: 24020002 */ addiu $v0,$zero,0x2
/* 4c91c: 00001025 */ or $v0,$zero,$zero
.L0004c920:
/* 4c920: 8fbf001c */ lw $ra,0x1c($sp)
.L0004c924:
/* 4c924: 8fb00018 */ lw $s0,0x18($sp)
/* 4c928: 27bd0048 */ addiu $sp,$sp,0x48
/* 4c92c: 03e00008 */ jr $ra
/* 4c930: 00000000 */ nop
);
s32 __osPfsRWInode(OSPfs *pfs, __OSInode *inode, u8 flag, u8 bank)
{
u8 sum;
int j;
s32 ret;
int offset;
u8 *addr;
static __OSInode prevnode;
if (flag == 0 && bank == g_PfsPrevBank && pfs->channel == g_PfsPrevChannel) {
bcopy(&prevnode, inode, sizeof(__OSInode));
return 0;
}
if (pfs->activebank != 0) {
ERRCK(__osPfsSelectBank(pfs, 0));
}
offset = (bank > 0) ? 1 : pfs->inode_start_page;
if (flag == PFS_WRITE) {
inode->inode_page[0].inode_t.page = __osSumCalc((u8*)&inode->inode_page[offset], (-offset) * 2 + 256);
}
for (j = 0; j < 8; j++) {
addr = ((u8 *)inode->inode_page + j * 32);
if (flag == PFS_WRITE) {
ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->inode_table + bank * 8 + j, addr, FALSE);
ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->minode_table + bank * 8 + j, addr, FALSE);
} else {
ret = __osContRamRead(pfs->queue, pfs->channel, pfs->inode_table + bank * 8 + j, addr);
}
if (ret != 0) {
return ret;
}
}
if (flag == PFS_READ) {
sum = __osSumCalc((u8*)&inode->inode_page[offset], (-offset) * 2 + 256);
if (sum != inode->inode_page[0].inode_t.page) {
for (j = 0; j < PFS_ONE_PAGE; j++) {
addr = ((u8 *)inode->inode_page + j * 32);
ret = __osContRamRead(pfs->queue, pfs->channel, pfs->minode_table + bank * PFS_ONE_PAGE + j, addr);
}
sum = __osSumCalc((u8*)&inode->inode_page[offset], (-offset) * 2 + 256);
if (sum != inode->inode_page[0].inode_t.page) {
return PFS_ERR_INCONSISTENT;
}
for (j = 0; j < PFS_ONE_PAGE; j++) {
addr = ((u8 *)inode->inode_page + j * 32);
ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->inode_table + bank * PFS_ONE_PAGE + j, addr, FALSE);
}
}
}
g_PfsPrevBank = bank;
bcopy(inode, &prevnode, sizeof(__OSInode));
g_PfsPrevChannel = pfs->channel;
return 0;
}
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