Slides/vm intro (#40)

* Started vm intro slides

* Added slides for machines

* finished vm intro slides

* Fixed warnings on Linux

* Added the slides to the contents

1 files changed, 57 insertions, 0 deletions

diff --git a/JSImpl/test/empty.cpp b/JSImpl/test/empty.cpp
index 53d601d..2787b00 100644
--- a/JSImpl/test/empty.cpp
+++ b/JSImpl/test/empty.cpp
@@ -3,3 +3,60 @@
 TEST(Empty, Empty)
 {
 }
+
+int get_op(int8_t *& PC) {
+	return *(PC++);
+}
+size_t get_arg(int8_t*& PC, int size) {
+	switch (size) {
+	case 0:
+		return *(PC++);
+	case 1:
+		return *(((unsigned short*&)PC)++);
+	case 2:
+		return *(((unsigned int*&)PC)++);
+	case 3:
+		return *(((size_t*&)PC)++);
+	}
+	return 0;
+}
+
+
+TEST(Pointer, byte)
+{
+	int8_t data[] = { 42, 0 };
+	int8_t* PC = data;
+	ASSERT_EQ(42, get_op(PC));
+	ASSERT_EQ(data + 1, PC);
+}
+
+TEST(Pointer, int16)
+{
+	int8_t data[] = { 1, 42, 0,  3};
+	int8_t* PC = data;
+	get_op(PC);
+	ASSERT_EQ(42U, get_arg(PC, 1));
+	ASSERT_EQ(data + 3, PC);
+}
+
+TEST(Pointer, int32)
+{
+	int8_t data[] = { 1, 42, 0,  3, 0, 1 };
+	int8_t* PC = data;
+	get_op(PC);
+	ASSERT_EQ(0x0003002aU, get_arg(PC, 2));
+	ASSERT_EQ(data + 5, PC);
+}
+
+
+TEST(Pointer, int64)
+{
+	int8_t data[] = { 1, 42, 0,  3, 0, 1,  0, 0, 0 };
+	int8_t* PC = data;
+	get_op(PC);
+	ASSERT_EQ(0x010003002aU, get_arg(PC, 3));
+	ASSERT_EQ(data + 9, PC);
+}
+
+
+