sm64/lib/asm/osSetIntMask.s
2020-02-03 00:51:26 -05:00

139 lines
2.4 KiB
ArmAsm

.set noat # allow manual use of $at
.set noreorder # don't insert nops after branches
.set gp=64
.include "macros.inc"
.eqv MI_INTR_MASK_REG, 0xA430000C
.section .text, "ax"
glabel osSetIntMask
.ifndef VERSION_EU
mfc0 $t1, $12
andi $v0, $t1, 0xff01
.else
mfc0 $t4, $12
andi $v0, $t4, 0xff01
lui $t0, %hi(D_8030208C) # $t0, 0x8030
addiu $t0, %lo(D_8030208C) # addiu $t0, $t0, 0x208c
lw $t3, ($t0)
li $at, -1
xor $t0, $t3, $at
andi $t0, $t0, 0xff00
or $v0, $v0, $t0
.endif
lui $t2, %hi(MI_INTR_MASK_REG) # $t2, 0xa430
lw $t2, %lo(MI_INTR_MASK_REG)($t2)
.ifdef VERSION_EU
beqz $t2, .L80200074
srl $t1, $t3, 0x10
li $at, -1
xor $t1, $t1, $at
andi $t1, $t1, 0x3f
or $t2, $t2, $t1
.L80200074:
.endif
sll $t2, $t2, 0x10
or $v0, $v0, $t2
lui $at, 0x3f
and $t0, $a0, $at
.ifdef VERSION_EU
and $t0, $t0, $t3
.endif
srl $t0, $t0, 0xf
lui $t2, %hi(D_803386D0)
addu $t2, $t2, $t0
lhu $t2, %lo(D_803386D0)($t2)
lui $at, %hi(MI_INTR_MASK_REG) # $at, 0xa430
sw $t2, %lo(MI_INTR_MASK_REG)($at)
andi $t0, $a0, 0xff01
.ifdef VERSION_EU
andi $t1, $t3, 0xff00
and $t0, $t0, $t1
.endif
lui $at, (0xFFFF00FF >> 16) # lui $at, 0xffff
ori $at, (0xFFFF00FF & 0xFFFF) # ori $at, $at, 0xff
.ifndef VERSION_EU
and $t1, $t1, $at
or $t1, $t1, $t0
mtc0 $t1, $12
.else
and $t4, $t4, $at
or $t4, $t4, $t0
mtc0 $t4, $12
.endif
nop
nop
jr $ra
nop
.section .rodata
glabel D_803386D0
.half 0x0555
.half 0x0556
.half 0x0559
.half 0x055A
.half 0x0565
.half 0x0566
.half 0x0569
.half 0x056A
.half 0x0595
.half 0x0596
.half 0x0599
.half 0x059A
.half 0x05A5
.half 0x05A6
.half 0x05A9
.half 0x05AA
.half 0x0655
.half 0x0656
.half 0x0659
.half 0x065A
.half 0x0665
.half 0x0666
.half 0x0669
.half 0x066A
.half 0x0695
.half 0x0696
.half 0x0699
.half 0x069A
.half 0x06A5
.half 0x06A6
.half 0x06A9
.half 0x06AA
.half 0x0955
.half 0x0956
.half 0x0959
.half 0x095A
.half 0x0965
.half 0x0966
.half 0x0969
.half 0x096A
.half 0x0995
.half 0x0996
.half 0x0999
.half 0x099A
.half 0x09A5
.half 0x09A6
.half 0x09A9
.half 0x09AA
.half 0x0A55
.half 0x0A56
.half 0x0A59
.half 0x0A5A
.half 0x0A65
.half 0x0A66
.half 0x0A69
.half 0x0A6A
.half 0x0A95
.half 0x0A96
.half 0x0A99
.half 0x0A9A
.half 0x0AA5
.half 0x0AA6
.half 0x0AA9
.half 0x0AAA