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