diff --git a/trunk/research/frame/frame0.cpp b/trunk/research/frame/frame0.cpp
new file mode 100644
index 000000000..251d02a00
--- /dev/null
+++ b/trunk/research/frame/frame0.cpp
@@ -0,0 +1,22 @@
+/*
+g++ frame0.cpp -g -O0 -o frame && ./frame
+*/
+#include <stdio.h>
+#include <stdlib.h>
+
+int callee(int a, long b) {
+    int c = a;
+    c += (int)b;
+    return c;
+}
+void caller() {
+    int v = callee(10, 20);
+    printf("v=%d\n", v);
+}
+
+int main(int argc, char** argv)
+{
+    caller();
+    return 0;
+}
+
diff --git a/trunk/research/frame/frame1.cpp b/trunk/research/frame/frame1.cpp
new file mode 100644
index 000000000..1722c8c5b
--- /dev/null
+++ b/trunk/research/frame/frame1.cpp
@@ -0,0 +1,34 @@
+/*
+g++ frame1.cpp -g -O0 -o frame && ./frame
+*/
+#include <stdio.h>
+#include <stdlib.h>
+
+int callee(int a, long b, long c, int d, long e, int f, int g, int h) {
+    int v = a;
+    v += (int)b;
+    v += (int)c;
+    v += (int)e;
+    v += (int)g;
+    v += (int)h;
+    return v;
+}
+void caller() {
+    int a = 10;
+    int b = 20;
+    long c = 30;
+    int d = 40;
+    int e = 50;
+    int f = 60;
+    int g = 70;
+    int h = 80;
+    int v = callee(a, b, c, d, e, f, g, h);
+    printf("v=%d, c=%ld\n", v, c);
+}
+
+int main(int argc, char** argv)
+{
+    caller();
+    return 0;
+}
+