sm64/lib/asm/guNormalize.s
2023-08-17 08:56:02 -04:00

34 lines
615 B
ArmAsm

.set noreorder // don't insert nops after branches
#include "macros.inc"
.section .text, "ax"
#ifdef VERSION_CN
glabel guNormalize
lwc1 $f4, ($a0)
lwc1 $f6, ($a1)
lwc1 $f8, ($a2)
mul.s $f10, $f4, $f4
li $t0, 0x3F800000 # 1.000000
mul.s $f16, $f6, $f6
add.s $f18, $f10, $f16
mul.s $f16, $f8, $f8
add.s $f10, $f16, $f18
mtc1 $t0, $f18
sqrt.s $f16, $f10
div.s $f10, $f18, $f16
mul.s $f16, $f4, $f10
nop
mul.s $f18, $f6, $f10
nop
mul.s $f4, $f8, $f10
swc1 $f16, ($a0)
swc1 $f18, ($a1)
jr $ra
swc1 $f4, ($a2)
#endif