Added assembler instructions

src/asm/Assembler.go

@@ -0,0 +1,8 @@
+package asm
+
+import "bytes"
+
+type Assembler struct {
+	Code bytes.Buffer
+	Data bytes.Buffer
+}

src/asm/x64/AppendUint32.go

@@ -0,0 +1,11 @@
+package x64
+
+import "io"
+
+// AppendUint32 appends a 32 bit number in Little Endian to the given writer.
+func AppendUint32(w io.ByteWriter, number uint32) {
+	w.WriteByte(byte(number))
+	w.WriteByte(byte(number >> 8))
+	w.WriteByte(byte(number >> 16))
+	w.WriteByte(byte(number >> 24))
+}

src/asm/x64/MoveRegNum32.go

@@ -0,0 +1,10 @@
+package x64
+
+import (
+	"io"
+)
+
+func MoveRegNum32(w io.ByteWriter, register byte, number uint32) {
+	w.WriteByte(0xb8 + register)
+	AppendUint32(w, number)
+}

src/asm/x64/Syscall.go

@@ -0,0 +1,10 @@
+package x64
+
+import (
+	"io"
+)
+
+func Syscall(w io.ByteWriter) {
+	w.WriteByte(0x0f)
+	w.WriteByte(0x05)
+}