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Decompile __readVarLen

This commit is contained in:
Ryan Dwyer 2021-03-27 19:18:50 +10:00
parent b8eb8b21ab
commit 0e105fc762
2 changed files with 22 additions and 47 deletions
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1
src/include/lib/lib_38d30.h
View File

@ -7,7 +7,6 @@
u32 func00038d30(void);
u32 func00038eb0(void);
u32 func0003902c(void);
u32 func00039b4c(void);
u32 func00039be0(void);
u32 func00039c30(void);

68
src/lib/lib_38d30.c
View File

@ -7,6 +7,7 @@
#include "types.h"
u8 __getTrackByte(ALCSeq *seq, u32 track);
u32 __readVarLen(ALCSeq *seq,u32 track);
GLOBAL_ASM(
glabel func00038d30
@ -69,7 +70,7 @@ glabel func00038d30
/* 38e0c: 012a6821 */ addu $t5,$t1,$t2
/* 38e10: adb90018 */ sw $t9,0x18($t5)
/* 38e14: 8fa40028 */ lw $a0,0x28($sp)
/* 38e18: 0c00e6d3 */ jal func00039b4c
/* 38e18: 0c00e6d3 */ jal __readVarLen
/* 38e1c: 8fa50024 */ lw $a1,0x24($sp)
/* 38e20: 8faf0024 */ lw $t7,0x24($sp)
/* 38e24: 8fac0028 */ lw $t4,0x28($sp)
@ -193,7 +194,7 @@ glabel func00038eb0
/* 38fd0: 11e1000c */ beq $t7,$at,.L00039004
/* 38fd4: 00000000 */ nop
/* 38fd8: 8fa40038 */ lw $a0,0x38($sp)
/* 38fdc: 0c00e6d3 */ jal func00039b4c
/* 38fdc: 0c00e6d3 */ jal __readVarLen
/* 38fe0: 8fa5002c */ lw $a1,0x2c($sp)
/* 38fe4: 8fb8002c */ lw $t8,0x2c($sp)
/* 38fe8: 8fae0038 */ lw $t6,0x38($sp)
@ -485,7 +486,7 @@ glabel func0003902c
/* 39414: 15e10006 */ bne $t7,$at,.L00039430
/* 39418: 00000000 */ nop
/* 3941c: 8fa40030 */ lw $a0,0x30($sp)
/* 39420: 0c00e6d3 */ jal func00039b4c
/* 39420: 0c00e6d3 */ jal __readVarLen
/* 39424: 8fa50034 */ lw $a1,0x34($sp)
/* 39428: 8fac0038 */ lw $t4,0x38($sp)
/* 3942c: ad82000c */ sw $v0,0xc($t4)
@ -830,49 +831,24 @@ u8 __getTrackByte(ALCSeq *seq, u32 track)
return theByte;
}
GLOBAL_ASM(
glabel func00039b4c
/* 39b4c: 27bdffe0 */ addiu $sp,$sp,-32
/* 39b50: afbf0014 */ sw $ra,0x14($sp)
/* 39b54: afa40020 */ sw $a0,0x20($sp)
/* 39b58: afa50024 */ sw $a1,0x24($sp)
/* 39b5c: 8fa40020 */ lw $a0,0x20($sp)
/* 39b60: 0c00e656 */ jal __getTrackByte
/* 39b64: 8fa50024 */ lw $a1,0x24($sp)
/* 39b68: afa2001c */ sw $v0,0x1c($sp)
/* 39b6c: 8fae001c */ lw $t6,0x1c($sp)
/* 39b70: 31cf0080 */ andi $t7,$t6,0x80
/* 39b74: 11e00012 */ beqz $t7,.L00039bc0
/* 39b78: 00000000 */ nop
/* 39b7c: 8fb8001c */ lw $t8,0x1c($sp)
/* 39b80: 3319007f */ andi $t9,$t8,0x7f
/* 39b84: afb9001c */ sw $t9,0x1c($sp)
.L00039b88:
/* 39b88: 8fa40020 */ lw $a0,0x20($sp)
/* 39b8c: 0c00e656 */ jal __getTrackByte
/* 39b90: 8fa50024 */ lw $a1,0x24($sp)
/* 39b94: afa20018 */ sw $v0,0x18($sp)
/* 39b98: 8fa8001c */ lw $t0,0x1c($sp)
/* 39b9c: 8faa0018 */ lw $t2,0x18($sp)
/* 39ba0: 000849c0 */ sll $t1,$t0,0x7
/* 39ba4: 314b007f */ andi $t3,$t2,0x7f
/* 39ba8: 012b6021 */ addu $t4,$t1,$t3
/* 39bac: afac001c */ sw $t4,0x1c($sp)
/* 39bb0: 8fad0018 */ lw $t5,0x18($sp)
/* 39bb4: 31ae0080 */ andi $t6,$t5,0x80
/* 39bb8: 15c0fff3 */ bnez $t6,.L00039b88
/* 39bbc: 00000000 */ nop
.L00039bc0:
/* 39bc0: 10000003 */ b .L00039bd0
/* 39bc4: 8fa2001c */ lw $v0,0x1c($sp)
/* 39bc8: 10000001 */ b .L00039bd0
/* 39bcc: 00000000 */ nop
.L00039bd0:
/* 39bd0: 8fbf0014 */ lw $ra,0x14($sp)
/* 39bd4: 27bd0020 */ addiu $sp,$sp,0x20
/* 39bd8: 03e00008 */ jr $ra
/* 39bdc: 00000000 */ nop
);
u32 __readVarLen(ALCSeq *seq, u32 track)
{
u32 value;
u32 c;
value = (u32)__getTrackByte(seq, track);
if (value & 0x80) {
value &= 0x7f;
do {
c = (u32)__getTrackByte(seq, track);
value = (value << 7) + (c & 0x7f);
} while (c & 0x80);
}
return value;
}
GLOBAL_ASM(
glabel func00039be0