mirror of
https://gitlab.com/ryandwyer/perfect-dark
synced 2026-06-14 22:08:52 -04:00
Ryan Dwyer
406 lines
7.8 KiB
ArmAsm
406 lines
7.8 KiB
ArmAsm
#include "os_tlb.h"
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#include "asm_helper.h"
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#include "macros.inc"
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#include "versions.h"
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.set noat
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.set noreorder
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.bss
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.balign 4
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.space 4
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glabel g_VmStateTable
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.space 4
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glabel g_VmInitialised
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.space 4
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glabel g_VmZipBuffer
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.space 4
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glabel g_VmZipTable
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.space 8
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glabel var8008ae38
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.space 0x1000
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glabel var8008be38
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.space 0x1400
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.space 0x20
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.space 4
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glabel var8008d25c
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.space 4
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glabel var8008d260
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.space 4
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glabel var8008d264
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.space 4
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glabel var8008d268
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.space 4
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.text
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/**
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* Sets up TLB index 0 (0x70000000), then calls bootPhase1.
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*/
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glabel tlbInit
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lui $t0, %hi(bootPhase1)
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addiu $t0, $t0, %lo(bootPhase1)
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jr $t0
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nop
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glabel tlbHandleMiss
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mfc0 $t0, C0_CONTEXT
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sll $s5, $t0, 0x9
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lui $t1, 0x7f00
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sub $t0, $s5, $t1
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srl $t0, $t0, 0xc
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sll $t0, $t0, 0x3
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lui $t1, %hi(g_VmStateTable)
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lw $t1, %lo(g_VmStateTable)($t1)
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addu $s0, $t0, $t1
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lui $s8, 0x7f00
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slt $at, $s5, $s8
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bnez $at, .L0000162c
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nop
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lui $t1, %hi(g_VmRamEnd)
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lw $t1, %lo(g_VmRamEnd)($t1)
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slt $at, $s5, $t1
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beqz $at, .L0000162c
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nop
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mfc0 $t9, C0_BADVADDR
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srl $t9, $t9, 0xc
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andi $t9, $t9, 0x1
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beqzl $t9, .L000011e0
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lw $s1, 0x0($s0)
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lw $s1, 0x8($s0)
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.L000011e0:
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bnezl $s1, .L000014c4
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addiu $t5, $zero, 0x1
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addiu $t5, $zero, 0x0
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lui $t1, %hi(var8008d25c)
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lw $t1, %lo(var8008d25c)($t1)
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lui $t2, %hi(var8008d260)
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lw $t2, %lo(var8008d260)($t2)
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.L000011fc:
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lbu $t0, 0x0($t1)
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beqz $t0, .L0000122c
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nop
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addiu $t6, $zero, 0x0
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addiu $t7, $zero, 0x1
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.L00001210:
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and $t8, $t0, $t7
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bnez $t8, .L0000123c
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nop
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addiu $t6, $t6, 0x1
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addiu $at, $zero, 0x8
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bne $t6, $at, .L00001210
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sll $t7, $t7, 0x1
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.L0000122c:
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bne $t1, $t2, .L000011fc
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addiu $t1, $t1, 0x1
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j .L00001570
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nop
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.L0000123c:
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xor $t0, $t0, $t7
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sb $t0, 0x0($t1)
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lui $t2, %hi(var8008d25c)
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lw $t2, %lo(var8008d25c)($t2)
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lui $s1, %hi(var8008d268)
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lw $s1, %lo(var8008d268)($s1)
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subu $t1, $t1, $t2
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sll $t1, $t1, 0x3
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addu $t0, $t6, $t1
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sll $t0, $t0, 0xc
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addu $s1, $s1, $t0
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.L00001268:
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mfc0 $t2, C0_BADVADDR
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lui $t0, 0xff
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ori $t0, $t0, 0xf000
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and $t2, $t2, $t0
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srl $t2, $t2, 0xa
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lui $t0, %hi(g_VmZipTable)
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lw $t0, %lo(g_VmZipTable)($t0)
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addu $t0, $t0, $t2
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lw $t2, 0x0($t0)
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lw $t0, 0x4($t0)
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subu $t0, $t0, $t2
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addiu $t1, $zero, -16
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addiu $t0, $t0, 0xf
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and $t6, $t0, $t1
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lui $t0, 0xa460
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ori $t0, $t0, 0x10
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.L000012a8:
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lw $t1, 0x0($t0)
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andi $t1, $t1, 0x3
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bnez $t1, .L000012a8
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nop
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lui $s6, 0xa430
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lw $s6, 0x8($s6)
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andi $s6, $s6, 0x10
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lui $t0, 0xa460
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lui $t1, %hi(g_VmZipBuffer)
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lw $t1, %lo(g_VmZipBuffer)($t1)
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lui $t7, 0xfff
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ori $t7, $t7, 0xffff
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and $t1, $t1, $t7
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sw $t1, 0x0($t0)
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lui $t0, 0xa460
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ori $t0, $t0, 0x4
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lui $t1, 0x8000
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lw $t1, 0x308($t1)
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or $t1, $t1, $t2
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lui $t2, 0x1fff
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ori $t2, $t2, 0xffff
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and $t1, $t1, $t2
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sw $t1, 0x0($t0)
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lui $t0, 0xa460
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ori $t0, $t0, 0xc
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addiu $t6, $t6, -1
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sw $t6, 0x0($t0)
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beqzl $t9, .L00001324
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nop
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beqzl $zero, .L00001328
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sw $s1, 0x8($s0)
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.L00001324:
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sw $s1, 0x0($s0)
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.L00001328:
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lui $t0, 0xa460
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ori $t0, $t0, 0x10
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.L00001330:
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lw $t1, 0x0($t0)
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andi $t1, $t1, 0x3
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bnez $t1, .L00001330
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nop
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lui $t0, %hi(g_VmZipBuffer)
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lw $t0, %lo(g_VmZipBuffer)($t0)
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addiu $t1, $t0, 0x1000
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.L0000134c:
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cache 0x15, 0x0($t0)
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sltu $at, $t0, $t1
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bnez $at, .L0000134c
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addiu $t0, $t0, 16
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bnez $s6, .L00001370
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nop
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addiu $t0, $zero, 0x2
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lui $at, 0xa460
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sw $t0, 0x10($at)
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.L00001370:
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lui $a0, %hi(var8008ae38)
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addiu $a0, $a0, %lo(var8008ae38)
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addiu $a0, $a0, 0xff8
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sw $sp, 0x0($a0)
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addiu $sp, $a0, 0x0
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lui $a0, %hi(g_VmZipBuffer)
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lw $a0, %lo(g_VmZipBuffer)($a0)
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addiu $a0, $a0, 0x2
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lui $t0, 0x8000
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or $a1, $s1, $t0
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lui $a2, %hi(var8008be38)
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addiu $a2, $a2, %lo(var8008be38)
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addiu $sp, $sp, -128
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sw $ra, 0x0($sp)
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sw $at, 0x4($sp)
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sw $v0, 0x8($sp)
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sw $v1, 0xc($sp)
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sw $a0, 0x10($sp)
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sw $a1, 0x14($sp)
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sw $a2, 0x18($sp)
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sw $a3, 0x1c($sp)
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sw $t0, 0x20($sp)
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sw $t1, 0x24($sp)
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sw $t2, 0x28($sp)
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sw $t3, 0x2c($sp)
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sw $t4, 0x30($sp)
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sw $t5, 0x34($sp)
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sw $t6, 0x38($sp)
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sw $t7, 0x3c($sp)
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sw $s0, 0x40($sp)
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sw $s1, 0x44($sp)
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sw $s2, 0x48($sp)
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sw $s3, 0x4c($sp)
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sw $s4, 0x50($sp)
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sw $s5, 0x54($sp)
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sw $s6, 0x58($sp)
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sw $s7, 0x5c($sp)
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sw $t8, 0x60($sp)
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sw $t9, 0x64($sp)
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sw $gp, 0x70($sp)
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sw $sp, 0x74($sp)
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sw $s8, 0x78($sp)
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jal rzipInflate
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nop
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lw $ra, 0x0($sp)
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lw $at, 0x4($sp)
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lw $v0, 0x8($sp)
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lw $v1, 0xc($sp)
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lw $a0, 0x10($sp)
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lw $a1, 0x14($sp)
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lw $a2, 0x18($sp)
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lw $a3, 0x1c($sp)
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lw $t0, 0x20($sp)
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lw $t1, 0x24($sp)
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lw $t2, 0x28($sp)
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lw $t3, 0x2c($sp)
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lw $t4, 0x30($sp)
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lw $t5, 0x34($sp)
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lw $t6, 0x38($sp)
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lw $t7, 0x3c($sp)
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lw $s0, 0x40($sp)
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lw $s1, 0x44($sp)
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lw $s2, 0x48($sp)
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lw $s3, 0x4c($sp)
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lw $s4, 0x50($sp)
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lw $s5, 0x54($sp)
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lw $s6, 0x58($sp)
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lw $s7, 0x5c($sp)
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lw $t8, 0x60($sp)
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lw $t9, 0x64($sp)
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lw $gp, 0x70($sp)
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lw $sp, 0x74($sp)
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lw $s8, 0x78($sp)
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addiu $sp, $sp, 0x80
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lui $a0, %hi(var8008ae38)
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addiu $a0, $a0, %lo(var8008ae38)
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addiu $a0, $a0, 4088
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lw $sp, 0x0($a0)
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lui $t0, 0x8000
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or $t0, $s1, $t0
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addiu $t1, $t0, 0xff0
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.L000014b4:
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cache 0x19, 0x0($t0)
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sltu $at, $t0, $t1
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bnez $at, .L000014b4
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addiu $t0, $t0, 0x10
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.L000014c4:
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addiu $t0, $zero, OS_PM_4K
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mtc0 $t0, C0_PAGEMASK
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mtc0 $s5, C0_ENTRYHI
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nop
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nop
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nop
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tlbp
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nop
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nop
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mfc0 $t1, C0_INX
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mtc0 $t0, C0_PAGEMASK
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mtc0 $s5, C0_ENTRYHI
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lw $t0, 0x0($s0)
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srl $t0, $t0, 0xc
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sll $t0, $t0, 0x6
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bnezl $t0, .L00001508
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ori $t0, $t0, 0x1e
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.L00001508:
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mtc0 $t0, C0_ENTRYLO0
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lw $t0, 0x8($s0)
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srl $t0, $t0, 0xc
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sll $t0, $t0, 0x6
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bnezl $t0, .L00001520
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ori $t0, $t0, 0x1e
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.L00001520:
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mtc0 $t0, C0_ENTRYLO1
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bltzl $t1, .L00001534
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nop
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b .L00001538
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tlbwi
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.L00001534:
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tlbwr
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.L00001538:
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bnez $t5, .L00001568
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nop
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or $t0, $s5, $zero
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bnezl $t9, .L0000154c
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addiu $t0, $t0, 0x1000
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.L0000154c:
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addiu $t1, $t0, 0xfe0
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andi $t2, $t0, 0x1f
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subu $t0, $t0, $t2
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.L00001558:
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cache 0x10, 0x0($t0)
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sltu $at, $t0, $t1
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bnez $at, .L00001558
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addiu $t0, $t0, 0x20
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.L00001568:
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jr $ra
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nop
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.L00001570:
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.L00001570_2:
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lui $s4, %hi(g_VmStateTable)
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lw $s4, %lo(g_VmStateTable)($s4)
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lui $gp, %hi(g_VmStateTableEnd)
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lw $gp, %lo(g_VmStateTableEnd)($gp)
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mfc0 $t0, C0_COUNT
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lui $t1, %hi(var8008d264+0x2)
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lhu $t1, %lo(var8008d264+0x2)($t1)
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lui $t2, %hi(g_VmNumPages)
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lw $t2, %lo(g_VmNumPages)($t2)
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and $t0, $t0, $t1
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slt $at, $t0, $t2
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beqzl $at, .L000015a4
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subu $t0, $t0, $t2
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.L000015a4:
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sll $t1, $t0, 0x3
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addu $t1, $t1, $s4
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.L000015ac:
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lw $s1, 0x0($t1)
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bnez $s1, .L000015cc
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nop
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addiu $t1, $t1, 8
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bne $t1, $gp, .L000015ac
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nop
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j .L000015ac
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or $t1, $s4, $zero
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.L000015cc:
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subu $t0, $t1, $s4
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srl $t0, $t0, 0x3
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sll $t0, $t0, 0xc
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addu $t0, $t0, $s8
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addiu $t2, $zero, -4096
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and $t0, $t0, $t2
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mtc0 $t0, C0_ENTRYHI
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addiu $t0, $zero, 0x0
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mtc0 $t0, C0_PAGEMASK
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nop
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nop
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nop
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tlbp
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nop
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nop
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mfc0 $t2, C0_INX
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mfc0 $t0, C0_ENTRYHI
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bltz $t2, .L00001620
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nop
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j .L00001570_2
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nop
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.L00001620:
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sw $zero, 0x0($t1)
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j .L00001268
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nop
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.L0000162c:
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j L00003a88
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nop
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glabel tlbUnmapRange
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mfc0 $t0, C0_ENTRYHI
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lui $t2, 0x8000
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mtc0 $t2, C0_ENTRYHI
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mtc0 $zero, C0_ENTRYLO0
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mtc0 $zero, C0_ENTRYLO1
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.L00001648:
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mtc0 $a1, C0_INX
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nop
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tlbwi
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nop
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nop
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bne $a1, $a0, .L00001648
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addi $a1, $a1, -1
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mtc0 $t0, C0_ENTRYHI
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jr $ra
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nop
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