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MorsGames
GitHub Repository: MorsGames/sm64plus
 Path: blob/master/asm/decompress.s
7854 views
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// assembler directives

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.set noat      // allow manual use of $at

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.set noreorder // don't insert nops after branches

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.set gp=64

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#include "macros.inc"

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.section .text, "ax"

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// This file is handwritten.

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glabel decompress

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#if defined(VERSION_EU) || defined(VERSION_SH)

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    lw    $a3, 8($a0)

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    lw    $t9, 0xc($a0)

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    lw    $t8, 4($a0)

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    add   $a3, $a3, $a0

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    add   $t9, $t9, $a0

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    move  $a2, $zero

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    addi  $a0, $a0, 0x10

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    add   $t8, $t8, $a1

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.L8026ED80:

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    bnezl $a2, .L8026ED98

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     slt   $t1, $t0, $zero

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    lw    $t0, ($a0)

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    li    $a2, 32

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    addi  $a0, $a0, 4

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    slt   $t1, $t0, $zero

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.L8026ED98:

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    beql  $t1, $zero, .L8026EDB8

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     lhu   $t2, ($a3)

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    lb    $t2, ($t9)

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    addi  $t9, $t9, 1

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    addi  $a1, $a1, 1

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    b     .L8026EDE4

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     sb    $t2, -1($a1)

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    lhu   $t2, ($a3)

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.L8026EDB8:

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    addi  $a3, $a3, 2

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    srl   $t3, $t2, 0xc

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    andi  $t2, $t2, 0xfff

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    sub   $t1, $a1, $t2

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    addi  $t3, $t3, 3

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.L8026EDCC:

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    lb    $t2, -1($t1)

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    addi  $t3, $t3, -1

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    addi  $t1, $t1, 1

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    addi  $a1, $a1, 1

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    bnez  $t3, .L8026EDCC

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     sb    $t2, -1($a1)

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.L8026EDE4:

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    sll   $t0, $t0, 1

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    bne   $a1, $t8, .L8026ED80

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     addi  $a2, $a2, -1

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    jr    $ra

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     nop

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#else

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    lw    $t8, 4($a0)

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    lw    $a3, 8($a0)

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    lw    $t9, 0xc($a0)

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    move  $a2, $zero

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    add   $t8, $t8, $a1

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    add   $a3, $a3, $a0

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    add   $t9, $t9, $a0

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    addi  $a0, $a0, 0x10

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.L8027EF50:

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    bnez  $a2, .L8027EF64

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     nop

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    lw    $t0, ($a0)

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    li    $a2, 32

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    addi  $a0, $a0, 4

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.L8027EF64:

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    slt   $t1, $t0, $zero

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    beqz  $t1, .L8027EF88

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     nop

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    lb    $t2, ($t9)

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    addi  $t9, $t9, 1

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    sb    $t2, ($a1)

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    addi  $a1, $a1, 1

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    b     .L8027EFBC

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     nop

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.L8027EF88:

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    lhu   $t2, ($a3)

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    addi  $a3, $a3, 2

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    srl   $t3, $t2, 0xc

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    andi  $t2, $t2, 0xfff

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    sub   $t1, $a1, $t2

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    addi  $t3, $t3, 3

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.L8027EFA0:

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    lb    $t2, -1($t1)

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    addi  $t3, $t3, -1

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    addi  $t1, $t1, 1

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    sb    $t2, ($a1)

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    addi  $a1, $a1, 1

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    bnez  $t3, .L8027EFA0

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     nop

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.L8027EFBC:

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    sll   $t0, $t0, 1

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    addi  $a2, $a2, -1

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    bne   $a1, $t8, .L8027EF50

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     nop

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    jr    $ra

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     nop

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#endif

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