From 8f28495ab9a8ebf53868405541e907394895e51f Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sat, 17 Oct 2020 21:45:37 +0200
Subject: Add add

---
 asm/intel64/codes.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 asm/intel64/codes.cpp

(limited to 'asm/intel64/codes.cpp')

diff --git a/asm/intel64/codes.cpp b/asm/intel64/codes.cpp
new file mode 100644
index 0000000..a1d9e87
--- /dev/null
+++ b/asm/intel64/codes.cpp
@@ -0,0 +1,17 @@
+#include "codes.h"
+
+// REX prefix: 0b0100WRXB
+std::vector<uint8_t> REX(std::string s) {
+ uint8_t result{0b01000000};
+ if (s == "W")
+  result |= 0b00001000;
+ if (s == "R")
+  result |= 0b00000100;
+ if (s == "X")
+  result |= 0b00000010;
+ if (s == "B")
+  result |= 0b00000001;
+
+ return { result }; 
+}
+
-- 
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