mirror of https://github.com/pret/pokeemerald.git
99 lines
1.4 KiB
ArmAsm
99 lines
1.4 KiB
ArmAsm
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.include "asm/macros.inc"
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.include "constants/constants.inc"
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.syntax unified
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.text
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thumb_func_start sine
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@ s16 sine(s16 t, s16 amplitude)
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sine: @ 806F534
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lsls r1, 16
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asrs r1, 16
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ldr r2, =gUnknown_08329F40
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lsls r0, 16
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asrs r0, 15
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adds r0, r2
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movs r2, 0
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ldrsh r0, [r0, r2]
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muls r0, r1
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lsls r0, 8
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asrs r0, 16
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bx lr
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.pool
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thumb_func_end sine
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thumb_func_start cosine
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@ s16 cosine(s16 t, s16 amplitude)
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cosine: @ 806F550
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lsls r1, 16
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asrs r1, 16
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ldr r2, =gUnknown_08329F40
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lsls r0, 16
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asrs r0, 15
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adds r0, 0x80
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adds r0, r2
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movs r2, 0
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ldrsh r0, [r0, r2]
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muls r0, r1
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lsls r0, 8
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asrs r0, 16
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bx lr
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.pool
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thumb_func_end cosine
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thumb_func_start sine2
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@ s16 sine2(u16 angle)
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sine2: @ 806F570
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push {r4,r5,lr}
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adds r5, r0, 0
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lsls r5, 16
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lsrs r5, 16
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adds r0, r5, 0
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movs r1, 0xB4
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bl __umodsi3
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adds r4, r0, 0
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lsls r4, 16
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lsrs r4, 16
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adds r0, r5, 0
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movs r1, 0xB4
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bl __udivsi3
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movs r1, 0x1
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ands r0, r1
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ldr r1, =gUnknown_0832A1C0
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lsls r4, 1
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adds r4, r1
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ldrh r1, [r4]
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cmp r0, 0
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bne _0806F5A8
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lsls r0, r1, 16
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b _0806F5AC
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.pool
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_0806F5A8:
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lsls r0, r1, 16
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negs r0, r0
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_0806F5AC:
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asrs r0, 16
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pop {r4,r5}
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pop {r1}
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bx r1
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thumb_func_end sine2
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thumb_func_start cosine2
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@ s16 cosine2(u16 angle)
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cosine2: @ 806F5B4
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push {lr}
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lsls r0, 16
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movs r1, 0xB4
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lsls r1, 15
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adds r0, r1
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lsrs r0, 16
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bl sine2
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lsls r0, 16
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asrs r0, 16
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pop {r1}
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bx r1
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thumb_func_end cosine2
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.align 2, 0 @ Don't pad with nop.
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