Add get_bit_fields, which parses cache fields from a memory address

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/utils.cc b/tests/utils.cc
new file mode 100644
index 0000000..5368204
--- /dev/null
+++ b/tests/utils.cc
@@ -0,0 +1,23 @@
+#include "utils.h"
+#include "definitions.h"
+#include <catch2/catch_test_macros.hpp>
+
+TEST_CASE("Parse arbitrary fields # one", "[cache]")
+{
+	int tag, index, offset;
+	int address = 0b111110001010101;
+	get_bit_fields(address, &tag, &index, &offset);
+	CHECK(tag == 0b11111000);
+	CHECK(index == 0b10101);
+	CHECK(offset == 0b01);
+}
+
+TEST_CASE("Parse arbitrary fields # two", "[cache]")
+{
+	int tag, index, offset;
+	int address = 0b000110100111011;
+	get_bit_fields(address, &tag, &index, &offset);
+	CHECK(tag == 0b00011010);
+	CHECK(index == 0b01110);
+	CHECK(offset == 0b11);
+}