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.include "asm/macros.inc"
.include "global.inc"
.text
arm_func_start SND_GetLfoValue
SND_GetLfoValue: ; 0x037FC7F4
stmdb sp!, {r4, lr}
mov r4, r0
ldrb r0, [r4, #2]
cmp r0, #0
moveq r0, #0
beq _037FC83C
ldrh r1, [r4, #6]
ldrh r0, [r4, #4]
cmp r1, r0
movcc r0, #0
bcc _037FC83C
ldrh r0, [r4, #8]
mov r0, r0, lsr #8
bl SND_SinIdx
ldrb r2, [r4, #3]
ldrb r1, [r4, #2]
mul r0, r1, r0
mul r0, r2, r0
_037FC83C:
ldmia sp!, {r4, lr}
bx lr
arm_func_start SND_UpdateLfo
SND_UpdateLfo: ; 0x037FC844
ldrh r2, [r0, #6]
ldrh r1, [r0, #4]
cmp r2, r1
addcc r1, r2, #1
strcch r1, [r0, #6]
bxcc lr
ldrh r2, [r0, #8]
ldrb r1, [r0, #1]
mov r3, r1, lsl #6
add r1, r2, r1, lsl #6
mov r2, r1, lsr #8
b _037FC878
_037FC874:
sub r2, r2, #128 ; 0x80
_037FC878:
cmp r2, #128 ; 0x80
bcs _037FC874
ldrh r1, [r0, #8]
add r1, r1, r3
strh r1, [r0, #8]
ldrh r1, [r0, #8]
and r1, r1, #255 ; 0xff
strh r1, [r0, #8]
ldrh r1, [r0, #8]
orr r1, r1, r2, lsl #8
strh r1, [r0, #8]
bx lr
arm_func_start SND_StartLfo
SND_StartLfo: ; 0x037FC8A8
mov r1, #0
strh r1, [r0, #8]
strh r1, [r0, #6]
bx lr
arm_func_start SND_InitLfoParam
SND_InitLfoParam: ; 0x037FC8B8
mov r2, #0
strb r2, [r0]
strb r2, [r0, #2]
mov r1, #1
strb r1, [r0, #3]
mov r1, #16
strb r1, [r0, #1]
strh r2, [r0, #4]
bx lr
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