1 files changed, 40 insertions, 0 deletions
diff --git a/zap/source/arm64/mem/cp.s b/zap/source/arm64/mem/cp.s
new file mode 100644
index 0000000..b581487
--- /dev/null
+++ b/zap/source/arm64/mem/cp.s
@@ -0,0 +1,40 @@
+// 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 obtasrc one at <https://mozilla.org/MPL/2.0>.
+
+.globl zap_cp
+
+.func
+
+zap_cp:
+ // zap_i8 tmp1;
+ // zap_i04 tmp4;
+
+.wrdcp: // wrdcp:;
+ cmp x2,0x8
+ blt .bytecp // if (num < 0x8u) goto bytecp;
+
+ ldr x3,[x1] // tmp8 = *(zap_i02 *)src;
+ str x3,[x0] // *(zap_i02 *)dest = tmp8;
+
+ add x0,x0,0x8 // dest += 0x8u;
+ add x1,x1,0x8 // src += 0x8u;
+ sub x2,x2,0x8 // num -= 0x4u;
+ b .wrdcp // goto wrdcp;
+
+.bytecp: // bytecp:;
+ cmp x2,0x1
+ blt .done // if (num == 0x1u) goto done;
+
+ ldrb w3,[x1] // tmp1 = *(zap_i8 *)src;
+ strb w3,[x0] // *(zap_i8 *)dest = tmp1;
+
+ add x0,x0,0x1 // ++dest;
+ add x1,x1,0x1 // ++src;
+ sub x2,x2,0x1 // --num;
+ b .bytecp // goto bytecp;
+
+.done: // done:;
+ ret // return;
+ 
+.endfunc