1 files changed, 65 insertions, 0 deletions
diff --git a/tests/bcj_test.c b/tests/bcj_test.c
new file mode 100644
index 0000000..05de38a
--- /dev/null
+++ b/tests/bcj_test.c
@@ -0,0 +1,65 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       bcj_test.c
+/// \brief      Source code of compress_prepared_bcj_*
+///
+/// This is a simple program that should make the compiler to generate
+/// PC-relative branches, jumps, and calls. The compiled files can then
+/// be used to test the branch conversion filters. Note that this program
+/// itself does nothing useful.
+///
+/// Compiling: gcc -std=c99 -fPIC -c bcj_test.c
+/// Don't optimize or strip.
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+extern int jump(int a, int b);
+
+
+extern int
+call(int a, int b)
+{
+	if (a < b)
+		a = jump(a, b);
+
+	return a;
+}
+
+
+extern int
+jump(int a, int b)
+{
+	// The loop generates conditional jump backwards.
+	while (1) {
+		if (a < b) {
+			a *= 2;
+			a += 3 * b;
+			break;
+		} else {
+			// Put enough code here to prevent JMP SHORT on x86.
+			a += b;
+			a /= 2;
+			b += b % 5;
+			a -= b / 3;
+			b = 2 * b + a - 1;
+			a *= b + a + 1;
+			b += a - 1;
+			a += b * 2 - a / 5;
+		}
+	}
+
+	return a;
+}
+
+
+int
+main(int argc, char **argv)
+{
+	int a = call(argc, argc + 1);
+	return a == 0;
+}