diff options
Diffstat (limited to 'asm/math_util.s')
| -rw-r--r-- | asm/math_util.s | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/asm/math_util.s b/asm/math_util.s new file mode 100644 index 000000000..fc245ab7f --- /dev/null +++ b/asm/math_util.s @@ -0,0 +1,202 @@ + .include "asm/macros.inc" + .include "constants/constants.inc" + + .syntax unified + + .text + + thumb_func_start sub_80D8AA0 +sub_80D8AA0: @ 80D8AA0 + push {lr} + lsls r0, 16 + asrs r0, 16 + lsls r1, 16 + asrs r1, 16 + muls r0, r1 + adds r1, r0, 0 + cmp r0, 0 + bge _080D8AB4 + adds r1, 0xFF +_080D8AB4: + lsls r0, r1, 8 + asrs r0, 16 + pop {r1} + bx r1 + thumb_func_end sub_80D8AA0 + + thumb_func_start sub_80D8ABC +sub_80D8ABC: @ 80D8ABC + push {lr} + adds r3, r1, 0 + lsls r0, 24 + lsrs r0, 24 + lsls r3, 16 + asrs r3, 16 + lsls r2, 16 + asrs r2, 16 + muls r3, r2 + movs r1, 0x1 + lsls r1, r0 + adds r0, r3, 0 + bl __divsi3 + lsls r0, 16 + asrs r0, 16 + pop {r1} + bx r1 + thumb_func_end sub_80D8ABC + + thumb_func_start sub_80D8AE0 +sub_80D8AE0: @ 80D8AE0 + push {r4-r7,lr} + adds r2, r1, 0 + adds r4, r0, 0 + asrs r5, r0, 31 + asrs r3, r2, 31 + adds r1, r5, 0 + adds r0, r4, 0 + bl __muldi3 + adds r5, r1, 0 + adds r4, r0, 0 + adds r7, r5, 0 + adds r6, r4, 0 + cmp r5, 0 + bge _080D8B06 + movs r6, 0xFF + movs r7, 0 + adds r6, r4 + adcs r7, r5 +_080D8B06: + lsls r3, r7, 24 + lsrs r2, r6, 8 + adds r0, r3, 0 + orrs r0, r2 + asrs r1, r7, 8 + adds r5, r1, 0 + adds r4, r0, 0 + adds r0, r4, 0 + pop {r4-r7} + pop {r1} + bx r1 + thumb_func_end sub_80D8AE0 + + thumb_func_start sub_80D8B1C +sub_80D8B1C: @ 80D8B1C + push {lr} + lsls r0, 16 + lsrs r0, 16 + lsls r1, 16 + asrs r1, 16 + cmp r1, 0 + beq _080D8B38 + lsls r0, 16 + asrs r0, 8 + bl __divsi3 + lsls r0, 16 + asrs r0, 16 + b _080D8B3A +_080D8B38: + movs r0, 0 +_080D8B3A: + pop {r1} + bx r1 + thumb_func_end sub_80D8B1C + + thumb_func_start sub_80D8B40 +sub_80D8B40: @ 80D8B40 + push {lr} + lsls r0, 24 + lsrs r3, r0, 24 + lsls r1, 16 + lsrs r0, r1, 16 + lsls r2, 16 + asrs r1, r2, 16 + cmp r1, 0 + beq _080D8B62 + lsls r0, 16 + asrs r0, 16 + lsls r0, r3 + bl __divsi3 + lsls r0, 16 + asrs r0, 16 + b _080D8B64 +_080D8B62: + movs r0, 0 +_080D8B64: + pop {r1} + bx r1 + thumb_func_end sub_80D8B40 + + thumb_func_start sub_80D8B68 +sub_80D8B68: @ 80D8B68 + push {r4-r6,lr} + adds r6, r1, 0 + cmp r6, 0 + beq _080D8B88 + adds r2, r0, 0 + asrs r3, r0, 31 + lsrs r5, r2, 24 + lsls r4, r3, 8 + adds r1, r5, 0 + orrs r1, r4 + lsls r0, r2, 8 + adds r2, r6, 0 + asrs r3, r6, 31 + bl __divdi3 + b _080D8B8A +_080D8B88: + movs r0, 0 +_080D8B8A: + pop {r4-r6} + pop {r1} + bx r1 + thumb_func_end sub_80D8B68 + + thumb_func_start sub_80D8B90 +sub_80D8B90: @ 80D8B90 + push {lr} + adds r1, r0, 0 + movs r0, 0x80 + lsls r0, 9 + lsls r1, 16 + asrs r1, 16 + bl __divsi3 + lsls r0, 16 + asrs r0, 16 + pop {r1} + bx r1 + thumb_func_end sub_80D8B90 + + thumb_func_start sub_80D8BA8 +sub_80D8BA8: @ 80D8BA8 + push {lr} + lsls r0, 24 + lsrs r0, 24 + movs r2, 0x80 + lsls r2, 1 + lsls r2, r0 + lsls r1, 16 + asrs r1, 16 + adds r0, r2, 0 + bl __divsi3 + lsls r0, 16 + asrs r0, 16 + pop {r1} + bx r1 + thumb_func_end sub_80D8BA8 + + thumb_func_start sub_80D8BC8 +sub_80D8BC8: @ 80D8BC8 + push {lr} + adds r2, r0, 0 + ldr r1, _080D8BE0 @ =0x00000000 + ldr r0, _080D8BDC @ =0x00010000 + asrs r3, r2, 31 + bl __divdi3 + pop {r1} + bx r1 + .align 2, 0 +_080D8BDC: .4byte 0x00010000 +_080D8BE0: .4byte 0x00000000 + thumb_func_end sub_80D8BC8 + + .align 2, 0 @ Don't pad with nop. |