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ntsc-beta: Decompile pakFindFile

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This commit is contained in:
Ryan Dwyer
2022-04-21 12:12:41 +10:00
parent 1c74422f7f
commit 66a19026b1
1 changed files with 22 additions and 76 deletions
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src/game/pak.c
+22 -76
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@@ -2586,10 +2586,10 @@ void pak0f119340(u32 arg0)
}
}
#if VERSION >= VERSION_NTSC_1_0
// Note: ntsc-beta doesn't match the below due to stack size
s32 pakFindFile(s8 device, u32 fileid, struct pakfileheader *headerptr)
{
// NTSC 1.0 adds error checking
#if VERSION >= VERSION_NTSC_1_0
struct pakfileheader header;
s32 offset = 0;
u32 fslen;
@@ -2613,87 +2613,33 @@ s32 pakFindFile(s8 device, u32 fileid, struct pakfileheader *headerptr)
ret = pakReadHeaderAtOffset(device, offset, &header);
}
#if VERSION >= VERSION_NTSC_1_0
if (ret == PAK_ERR2_NOPAK) {
return -1;
}
#endif
return 0xffff;
}
#else
GLOBAL_ASM(
glabel pakFindFile
/* f11369c: 27bdffc0 */ addiu $sp,$sp,-64
/* f1136a0: afb10018 */ sw $s1,0x18($sp)
/* f1136a4: 00048e00 */ sll $s1,$a0,0x18
/* f1136a8: 00117603 */ sra $t6,$s1,0x18
/* f1136ac: afa40040 */ sw $a0,0x40($sp)
/* f1136b0: afb2001c */ sw $s2,0x1c($sp)
/* f1136b4: 000e2600 */ sll $a0,$t6,0x18
/* f1136b8: 00a09025 */ or $s2,$a1,$zero
/* f1136bc: afbf0024 */ sw $ra,0x24($sp)
/* f1136c0: afb00014 */ sw $s0,0x14($sp)
/* f1136c4: 00047e03 */ sra $t7,$a0,0x18
/* f1136c8: 01c08825 */ or $s1,$t6,$zero
/* f1136cc: afb30020 */ sw $s3,0x20($sp)
/* f1136d0: afa60048 */ sw $a2,0x48($sp)
/* f1136d4: 00008025 */ or $s0,$zero,$zero
/* f1136d8: 01e02025 */ or $a0,$t7,$zero
/* f1136dc: 0fc455c3 */ jal pakGetFilesystemLength
/* f1136e0: 27a5002c */ addiu $a1,$sp,0x2c
/* f1136e4: 00112600 */ sll $a0,$s1,0x18
/* f1136e8: 27b30030 */ addiu $s3,$sp,0x30
/* f1136ec: 0004c603 */ sra $t8,$a0,0x18
/* f1136f0: 03002025 */ or $a0,$t8,$zero
/* f1136f4: 02603025 */ or $a2,$s3,$zero
/* f1136f8: 0fc4461f */ jal pakReadHeaderAtOffset
/* f1136fc: 00002825 */ or $a1,$zero,$zero
/* f113700: 1440001d */ bnez $v0,.NB0f113778
/* f113704: 8fb9002c */ lw $t9,0x2c($sp)
/* f113708: 5320001c */ beqzl $t9,.NB0f11377c
/* f11370c: 3402ffff */ dli $v0,0xffff
/* f113710: 8fa8003c */ lw $t0,0x3c($sp)
.NB0f113714:
/* f113714: 8fab0038 */ lw $t3,0x38($sp)
/* f113718: 00112600 */ sll $a0,$s1,0x18
/* f11371c: 00084b40 */ sll $t1,$t0,0xd
/* f113720: 00095642 */ srl $t2,$t1,0x19
/* f113724: 164a0009 */ bne $s2,$t2,.NB0f11374c
/* f113728: 316c0fff */ andi $t4,$t3,0xfff
/* f11372c: 8fa40048 */ lw $a0,0x48($sp)
/* f113730: 02602825 */ or $a1,$s3,$zero
/* f113734: 10800003 */ beqz $a0,.NB0f113744
/* f113738: 00000000 */ sll $zero,$zero,0x0
/* f11373c: 0c012e88 */ jal memcpy
/* f113740: 24060010 */ addiu $a2,$zero,0x10
.NB0f113744:
/* f113744: 1000000d */ beqz $zero,.NB0f11377c
/* f113748: 02001025 */ or $v0,$s0,$zero
.NB0f11374c:
/* f11374c: 020c8021 */ addu $s0,$s0,$t4
/* f113750: 00046e03 */ sra $t5,$a0,0x18
/* f113754: 01a02025 */ or $a0,$t5,$zero
/* f113758: 02002825 */ or $a1,$s0,$zero
/* f11375c: 0fc4461f */ jal pakReadHeaderAtOffset
/* f113760: 02603025 */ or $a2,$s3,$zero
/* f113764: 14400004 */ bnez $v0,.NB0f113778
/* f113768: 8fae002c */ lw $t6,0x2c($sp)
/* f11376c: 020e082b */ sltu $at,$s0,$t6
/* f113770: 5420ffe8 */ bnezl $at,.NB0f113714
/* f113774: 8fa8003c */ lw $t0,0x3c($sp)
.NB0f113778:
/* f113778: 3402ffff */ dli $v0,0xffff
.NB0f11377c:
/* f11377c: 8fbf0024 */ lw $ra,0x24($sp)
/* f113780: 8fb00014 */ lw $s0,0x14($sp)
/* f113784: 8fb10018 */ lw $s1,0x18($sp)
/* f113788: 8fb2001c */ lw $s2,0x1c($sp)
/* f11378c: 8fb30020 */ lw $s3,0x20($sp)
/* f113790: 03e00008 */ jr $ra
/* f113794: 27bd0040 */ addiu $sp,$sp,0x40
);
struct pakfileheader header;
u32 fslen;
s32 offset = 0;
pakGetFilesystemLength(device, &fslen);
while (pakReadHeaderAtOffset(device, offset, &header) == PAK_ERR2_OK && offset < fslen) {
if (fileid == header.fileid) {
if (headerptr) {
memcpy(headerptr, &header, sizeof(struct pakfileheader));
}
return offset;
}
offset += header.filelen;
}
return 0xffff;
#endif
}
#if VERSION >= VERSION_NTSC_FINAL
bool pakWriteBlankFile(s8 device, u32 offset, struct pakfileheader *header)