diff options
Diffstat (limited to 'asm/util.s')
| -rw-r--r-- | asm/util.s | 466 |
1 files changed, 466 insertions, 0 deletions
diff --git a/asm/util.s b/asm/util.s new file mode 100644 index 000000000..865e98937 --- /dev/null +++ b/asm/util.s @@ -0,0 +1,466 @@ + .include "asm/macros.inc" + .include "constants/constants.inc" + + .syntax unified + + .text + + thumb_func_start CreateInvisibleSpriteWithCallback +CreateInvisibleSpriteWithCallback: @ 806F640 + push {r4-r6,lr} + adds r6, r0, 0 + ldr r0, =gUnknown_0832A3A8 + movs r1, 0xF8 + movs r2, 0xA8 + movs r3, 0xE + bl AddObjectToFront + lsls r0, 24 + lsrs r0, 24 + ldr r5, =gUnknown_02020630 + lsls r2, r0, 4 + adds r2, r0 + lsls r2, 2 + adds r3, r2, r5 + adds r3, 0x3E + ldrb r1, [r3] + movs r4, 0x4 + orrs r1, r4 + strb r1, [r3] + adds r5, 0x1C + adds r2, r5 + str r6, [r2] + pop {r4-r6} + pop {r1} + bx r1 + .pool + thumb_func_end CreateInvisibleSpriteWithCallback + + thumb_func_start StoreWordInTwoHalfwords +StoreWordInTwoHalfwords: @ 806F67C + strh r1, [r0] + lsrs r1, 16 + strh r1, [r0, 0x2] + bx lr + thumb_func_end StoreWordInTwoHalfwords + + thumb_func_start LoadWordFromTwoHalfwords +LoadWordFromTwoHalfwords: @ 806F684 + ldrh r2, [r0] + movs r3, 0x2 + ldrsh r0, [r0, r3] + lsls r0, 16 + orrs r2, r0 + str r2, [r1] + bx lr + thumb_func_end LoadWordFromTwoHalfwords + + thumb_func_start SetBgAffineStruct +SetBgAffineStruct: @ 806F694 + push {r4-r7,lr} + mov r7, r8 + push {r7} + ldr r4, [sp, 0x18] + ldr r5, [sp, 0x1C] + ldr r6, [sp, 0x20] + ldr r7, [sp, 0x24] + mov r8, r7 + str r1, [r0] + str r2, [r0, 0x4] + strh r3, [r0, 0x8] + strh r4, [r0, 0xA] + strh r5, [r0, 0xC] + strh r6, [r0, 0xE] + mov r1, r8 + strh r1, [r0, 0x10] + pop {r3} + mov r8, r3 + pop {r4-r7} + pop {r0} + bx r0 + thumb_func_end SetBgAffineStruct + + thumb_func_start DoBgAffineSet +DoBgAffineSet: @ 806F6C0 + push {r4-r6,lr} + mov r6, r8 + push {r6} + sub sp, 0x24 + mov r8, r0 + ldr r0, [sp, 0x38] + ldr r4, [sp, 0x3C] + ldr r5, [sp, 0x40] + ldr r6, [sp, 0x44] + lsls r6, 16 + lsrs r6, 16 + lsls r3, 16 + asrs r3, 16 + lsls r0, 16 + asrs r0, 16 + str r0, [sp] + lsls r4, 16 + asrs r4, 16 + str r4, [sp, 0x4] + lsls r5, 16 + asrs r5, 16 + str r5, [sp, 0x8] + str r6, [sp, 0xC] + add r0, sp, 0x10 + bl SetBgAffineStruct + add r0, sp, 0x10 + mov r1, r8 + movs r2, 0x1 + bl BgAffineSet + add sp, 0x24 + pop {r3} + mov r8, r3 + pop {r4-r6} + pop {r0} + bx r0 + thumb_func_end DoBgAffineSet + + thumb_func_start CopySpriteTiles +CopySpriteTiles: @ 806F70C + push {r4-r7,lr} + mov r7, r10 + mov r6, r9 + mov r5, r8 + push {r5-r7} + sub sp, 0x38 + str r2, [sp, 0x20] + adds r4, r3, 0 + ldr r7, [sp, 0x58] + lsls r0, 24 + lsls r1, 24 + ldr r2, =gUnknown_0832A3C0 + lsrs r1, 23 + lsrs r0, 21 + adds r1, r0 + adds r0, r2, 0x1 + adds r0, r1, r0 + ldrb r0, [r0] + str r0, [sp, 0x24] + adds r1, r2 + ldrb r1, [r1] + str r1, [sp, 0x28] + movs r0, 0 + b _0806F88C + .pool +_0806F740: + movs r5, 0 + adds r0, 0x1 + str r0, [sp, 0x30] + b _0806F874 +_0806F748: + ldrh r0, [r4] + ldr r2, =0x000003ff + adds r1, r2, 0 + ands r1, r0 + lsls r1, 5 + mov r8, r1 + movs r2, 0xC0 + lsls r2, 4 + adds r1, r2, 0 + ands r1, r0 + mov r2, sp + strh r0, [r2, 0x34] + cmp r1, 0 + bne _0806F788 + ldr r0, [sp, 0x20] + add r0, r8 + adds r1, r7, 0 + ldr r2, =0x04000008 + bl CpuSet + adds r4, 0x2 + str r4, [sp, 0x2C] + adds r7, 0x20 + mov r10, r7 + adds r5, 0x1 + mov r9, r5 + b _0806F86A + .pool +_0806F788: + movs r0, 0x80 + lsls r0, 4 + cmp r1, r0 + bne _0806F7CC + movs r1, 0 + adds r4, 0x2 + str r4, [sp, 0x2C] + movs r2, 0x20 + adds r2, r7 + mov r10, r2 + adds r5, 0x1 + mov r9, r5 +_0806F7A0: + lsls r4, r1, 24 + asrs r4, 24 + movs r0, 0x7 + subs r0, r4 + lsls r0, 2 + add r0, r8 + ldr r1, [sp, 0x20] + adds r0, r1, r0 + lsls r1, r4, 2 + adds r1, r7, r1 + ldr r2, =0x04000001 + bl CpuSet + adds r4, 0x1 + lsls r4, 24 + lsrs r1, r4, 24 + asrs r4, 24 + cmp r4, 0x7 + ble _0806F7A0 + b _0806F86A + .pool +_0806F7CC: + movs r1, 0 + adds r4, 0x2 + str r4, [sp, 0x2C] + movs r2, 0x20 + adds r2, r7 + mov r10, r2 + adds r5, 0x1 + mov r9, r5 + movs r0, 0xF + mov r12, r0 +_0806F7E0: + movs r2, 0 + lsls r4, r1, 24 + lsls r0, r4, 2 + lsrs r0, 24 + adds r6, r0, 0x3 + mov r1, r8 + adds r5, r1, r0 +_0806F7EE: + lsls r1, r2, 24 + asrs r1, 24 + subs r0, r6, r1 + mov r2, sp + adds r3, r2, r0 + adds r0, r5, r1 + ldr r2, [sp, 0x20] + adds r0, r2, r0 + ldrb r2, [r0] + mov r0, r12 + ands r0, r2 + lsls r0, 4 + lsrs r2, 4 + orrs r0, r2 + strb r0, [r3] + adds r1, 0x1 + lsls r1, 24 + lsrs r2, r1, 24 + asrs r1, 24 + cmp r1, 0x3 + ble _0806F7EE + movs r1, 0x80 + lsls r1, 17 + adds r0, r4, r1 + lsrs r1, r0, 24 + asrs r0, 24 + cmp r0, 0x7 + ble _0806F7E0 + mov r2, sp + ldrh r0, [r2, 0x34] + movs r2, 0x80 + lsls r2, 4 + ands r0, r2 + cmp r0, 0 + beq _0806F860 + movs r1, 0 +_0806F836: + lsls r4, r1, 24 + asrs r4, 24 + movs r0, 0x7 + subs r0, r4 + lsls r0, 2 + add r0, sp + lsls r1, r4, 2 + adds r1, r7, r1 + ldr r2, =0x04000001 + bl CpuSet + adds r4, 0x1 + lsls r4, 24 + lsrs r1, r4, 24 + asrs r4, 24 + cmp r4, 0x7 + ble _0806F836 + b _0806F86A + .pool +_0806F860: + mov r0, sp + adds r1, r7, 0 + ldr r2, =0x04000008 + bl CpuSet +_0806F86A: + ldr r4, [sp, 0x2C] + mov r7, r10 + mov r1, r9 + lsls r0, r1, 24 + lsrs r5, r0, 24 +_0806F874: + ldr r2, [sp, 0x28] + cmp r5, r2 + bcs _0806F87C + b _0806F748 +_0806F87C: + movs r0, 0x20 + ldr r1, [sp, 0x28] + subs r0, r1 + lsls r0, 1 + adds r4, r0 + ldr r2, [sp, 0x30] + lsls r0, r2, 24 + lsrs r0, 24 +_0806F88C: + ldr r1, [sp, 0x24] + cmp r0, r1 + bcs _0806F894 + b _0806F740 +_0806F894: + add sp, 0x38 + pop {r3-r5} + mov r8, r3 + mov r9, r4 + mov r10, r5 + pop {r4-r7} + pop {r0} + bx r0 + .pool + thumb_func_end CopySpriteTiles + + thumb_func_start CountTrailingZeroBits +CountTrailingZeroBits: @ 806F8A8 + push {lr} + adds r2, r0, 0 + movs r1, 0 + movs r3, 0x1 +_0806F8B0: + adds r0, r2, 0 + ands r0, r3 + cmp r0, 0 + beq _0806F8BC + adds r0, r1, 0 + b _0806F8CA +_0806F8BC: + lsrs r2, 1 + adds r0, r1, 0x1 + lsls r0, 24 + lsrs r1, r0, 24 + cmp r1, 0x1F + bls _0806F8B0 + movs r0, 0 +_0806F8CA: + pop {r1} + bx r1 + thumb_func_end CountTrailingZeroBits + + thumb_func_start CalcCRC16 +CalcCRC16: @ 806F8D0 + push {r4-r7,lr} + adds r7, r0, 0 + adds r4, r1, 0 + ldr r2, =0x00001121 + movs r3, 0 + cmp r3, r4 + bge _0806F91C + movs r6, 0x1 + ldr r0, =0x00008408 + adds r5, r0, 0 +_0806F8E4: + adds r0, r7, r3 + ldrb r0, [r0] + eors r2, r0 + movs r1, 0 + adds r3, 0x1 +_0806F8EE: + adds r0, r2, 0 + ands r0, r6 + cmp r0, 0 + beq _0806F908 + lsrs r0, r2, 1 + eors r0, r5 + lsls r0, 16 + lsrs r2, r0, 16 + b _0806F90A + .pool +_0806F908: + lsrs r2, 1 +_0806F90A: + adds r0, r1, 0x1 + lsls r0, 16 + lsrs r1, r0, 16 + cmp r1, 0x7 + bls _0806F8EE + lsls r0, r3, 16 + lsrs r3, r0, 16 + cmp r3, r4 + blt _0806F8E4 +_0806F91C: + mvns r0, r2 + lsls r0, 16 + lsrs r0, 16 + pop {r4-r7} + pop {r1} + bx r1 + thumb_func_end CalcCRC16 + + thumb_func_start CalcCRC16WithTable +CalcCRC16WithTable: @ 806F928 + push {r4-r6,lr} + adds r5, r0, 0 + adds r4, r1, 0 + ldr r2, =0x00001121 + movs r3, 0 + cmp r3, r4 + bcs _0806F956 + ldr r6, =gUnknown_0832A3D8 +_0806F938: + lsrs r1, r2, 8 + adds r0, r5, r3 + ldrb r0, [r0] + eors r2, r0 + lsls r0, r2, 24 + lsrs r0, 23 + adds r0, r6 + ldrh r0, [r0] + adds r2, r0, 0 + eors r2, r1 + adds r0, r3, 0x1 + lsls r0, 16 + lsrs r3, r0, 16 + cmp r3, r4 + bcc _0806F938 +_0806F956: + mvns r0, r2 + lsls r0, 16 + lsrs r0, 16 + pop {r4-r6} + pop {r1} + bx r1 + .pool + thumb_func_end CalcCRC16WithTable + + thumb_func_start CalcByteArraySum +CalcByteArraySum: @ 806F96C + push {r4,lr} + adds r4, r0, 0 + movs r3, 0 + movs r2, 0 + cmp r3, r1 + bcs _0806F984 +_0806F978: + adds r0, r4, r2 + ldrb r0, [r0] + adds r3, r0 + adds r2, 0x1 + cmp r2, r1 + bcc _0806F978 +_0806F984: + adds r0, r3, 0 + pop {r4} + pop {r1} + bx r1 + thumb_func_end CalcByteArraySum + + .align 2, 0 @ Don't pad with nop. |