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@ Copyright 2022-2023 Gabriel Jensen.
@ This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
@ If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>.
.syntax unified
.cpu arm7tdmi
.thumb
.globl ax_cp8
.func
.thumb_func
ax_cp8:
@ ax_i8 tmp;
adds r1,r0 @ void * end = in + num;
.cp: @ cp:;
@ Check if we have any bytes remaining:
cmp r0,r1
beq .done @ if (num == end) goto done;
@ Copy one byte:
ldrb r3,[r0] @ tmp = *(ax_i8 *)in;
strb r3,[r2] @ *(ax_i8 *)out = tmp;
@ Continue to the next byte:
adds r0,0x1 @ ++in;
adds r2,0x1 @ ++out;
b .cp @ goto cp;
.done: @ done:;
@ Return:
bx lr @ return;
.endfunc
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