5 files changed, 202 insertions, 0 deletions
diff --git a/test/cfi/cross-dso/icall/icall-from-dso.cpp b/test/cfi/cross-dso/icall/icall-from-dso.cpp
new file mode 100644
index 000000000..1995f05f4
--- /dev/null
+++ b/test/cfi/cross-dso/icall/icall-from-dso.cpp
@@ -0,0 +1,26 @@
+// RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t-so.so
+// RUN: %clangxx_cfi_dso %s -o %t %t-so.so && %expect_crash %t 2>&1 | FileCheck %s
+
+#include <stdio.h>
+
+#ifdef SHARED_LIB
+void g();
+void f() {
+  // CHECK: =1=
+  fprintf(stderr, "=1=\n");
+  ((void (*)(void))g)();
+  // CHECK: =2=
+  fprintf(stderr, "=2=\n");
+  ((void (*)(int))g)(42); // UB here
+  // CHECK-NOT: =3=
+  fprintf(stderr, "=3=\n");
+}
+#else
+void f();
+void g() {
+}
+
+int main() {
+  f();
+}
+#endif
diff --git a/test/cfi/cross-dso/icall/icall.cpp b/test/cfi/cross-dso/icall/icall.cpp
new file mode 100644
index 000000000..d7cc2f9ca
--- /dev/null
+++ b/test/cfi/cross-dso/icall/icall.cpp
@@ -0,0 +1,21 @@
+// RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t-so.so
+// RUN: %clangxx_cfi_dso %s -o %t %t-so.so && %expect_crash %t 2>&1 | FileCheck %s
+
+#include <stdio.h>
+
+#ifdef SHARED_LIB
+void f() {
+}
+#else
+void f();
+int main() {
+  // CHECK: =1=
+  fprintf(stderr, "=1=\n");
+  ((void (*)(void))f)();
+  // CHECK: =2=
+  fprintf(stderr, "=2=\n");
+  ((void (*)(int))f)(42); // UB here
+  // CHECK-NOT: =3=
+  fprintf(stderr, "=3=\n");
+}
+#endif
diff --git a/test/cfi/cross-dso/icall/lit.local.cfg b/test/cfi/cross-dso/icall/lit.local.cfg
new file mode 100644
index 000000000..db08765a2
--- /dev/null
+++ b/test/cfi/cross-dso/icall/lit.local.cfg
@@ -0,0 +1,3 @@
+# The cfi-icall checker is only supported on x86 and x86_64 for now.
+if config.root.host_arch not in ['x86', 'x86_64']:
+  config.unsupported = True
diff --git a/test/cfi/cross-dso/simple-fail.cpp b/test/cfi/cross-dso/simple-fail.cpp
new file mode 100644
index 000000000..dda57d2a8
--- /dev/null
+++ b/test/cfi/cross-dso/simple-fail.cpp
@@ -0,0 +1,87 @@
+// RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t1-so.so
+// RUN: %clangxx_cfi_dso %s -o %t1 %t1-so.so
+// RUN: %expect_crash %t1 2>&1 | FileCheck --check-prefix=CFI %s
+// RUN: %expect_crash %t1 x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
+
+// RUN: %clangxx_cfi_dso -DB32 -DSHARED_LIB %s -fPIC -shared -o %t2-so.so
+// RUN: %clangxx_cfi_dso -DB32 %s -o %t2 %t2-so.so
+// RUN: %expect_crash %t2 2>&1 | FileCheck --check-prefix=CFI %s
+// RUN: %expect_crash %t2 x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
+
+// RUN: %clangxx_cfi_dso -DB64 -DSHARED_LIB %s -fPIC -shared -o %t3-so.so
+// RUN: %clangxx_cfi_dso -DB64 %s -o %t3 %t3-so.so
+// RUN: %expect_crash %t3 2>&1 | FileCheck --check-prefix=CFI %s
+// RUN: %expect_crash %t3 x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
+
+// RUN: %clangxx_cfi_dso -DBM -DSHARED_LIB %s -fPIC -shared -o %t4-so.so
+// RUN: %clangxx_cfi_dso -DBM %s -o %t4 %t4-so.so
+// RUN: %expect_crash %t4 2>&1 | FileCheck --check-prefix=CFI %s
+// RUN: %expect_crash %t4 x 2>&1 | FileCheck --check-prefix=CFI-CAST %s
+
+// RUN: %clangxx -DBM -DSHARED_LIB %s -fPIC -shared -o %t5-so.so
+// RUN: %clangxx -DBM %s -o %t5 %t5-so.so
+// RUN: %t5 2>&1 | FileCheck --check-prefix=NCFI %s
+// RUN: %t5 x 2>&1 | FileCheck --check-prefix=NCFI %s
+
+// Tests that the CFI mechanism crashes the program when making a virtual call
+// to an object of the wrong class but with a compatible vtable, by casting a
+// pointer to such an object and attempting to make a call through it.
+
+// REQUIRES: cxxabi
+
+#include <stdio.h>
+#include <string.h>
+
+struct A {
+  virtual void f();
+};
+
+void *create_B();
+
+#ifdef SHARED_LIB
+
+#include "../utils.h"
+struct B {
+  virtual void f();
+};
+void B::f() {}
+
+void *create_B() {
+  create_derivers<B>();
+  return (void *)(new B());
+}
+
+#else
+
+void A::f() {}
+
+int main(int argc, char *argv[]) {
+  void *p = create_B();
+  A *a;
+
+  // CFI: =0=
+  // CFI-CAST: =0=
+  // NCFI: =0=
+  fprintf(stderr, "=0=\n");
+
+  if (argc > 1 && argv[1][0] == 'x') {
+    // Test cast. BOOM.
+    a = (A*)p;
+  } else {
+    // Invisible to CFI. Test virtual call later.
+    memcpy(&a, &p, sizeof(a));
+  }
+
+  // CFI: =1=
+  // CFI-CAST-NOT: =1=
+  // NCFI: =1=
+  fprintf(stderr, "=1=\n");
+
+  a->f(); // UB here
+
+  // CFI-NOT: =2=
+  // CFI-CAST-NOT: =2=
+  // NCFI: =2=
+  fprintf(stderr, "=2=\n");
+}
+#endif
diff --git a/test/cfi/cross-dso/simple-pass.cpp b/test/cfi/cross-dso/simple-pass.cpp
new file mode 100644
index 000000000..42f7a2734
--- /dev/null
+++ b/test/cfi/cross-dso/simple-pass.cpp
@@ -0,0 +1,65 @@
+// RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t1-so.so
+// RUN: %clangxx_cfi_dso %s -o %t1 %t1-so.so
+// RUN: %t1 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx_cfi_dso -DB32 -DSHARED_LIB %s -fPIC -shared -o %t2-so.so
+// RUN: %clangxx_cfi_dso -DB32 %s -o %t2 %t2-so.so
+// RUN: %t2 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx_cfi_dso -DB64 -DSHARED_LIB %s -fPIC -shared -o %t3-so.so
+// RUN: %clangxx_cfi_dso -DB64 %s -o %t3 %t3-so.so
+// RUN: %t3 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx_cfi_dso -DBM -DSHARED_LIB %s -fPIC -shared -o %t4-so.so
+// RUN: %clangxx_cfi_dso -DBM %s -o %t4 %t4-so.so
+// RUN: %t4 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx -DBM -DSHARED_LIB %s -fPIC -shared -o %t5-so.so
+// RUN: %clangxx -DBM %s -o %t5 %t5-so.so
+// RUN: %t5 2>&1 | FileCheck --check-prefix=NCFI %s
+// RUN: %t5 x 2>&1 | FileCheck --check-prefix=NCFI %s
+
+// Tests that the CFI mechanism crashes the program when making a virtual call
+// to an object of the wrong class but with a compatible vtable, by casting a
+// pointer to such an object and attempting to make a call through it.
+
+// REQUIRES: cxxabi
+
+#include <stdio.h>
+#include <string.h>
+
+struct A {
+  virtual void f();
+};
+
+A *create_B();
+
+#ifdef SHARED_LIB
+
+#include "../utils.h"
+struct B : public A {
+  virtual void f();
+};
+void B::f() {}
+
+A *create_B() {
+  create_derivers<B>();
+  return new B();
+}
+
+#else
+
+void A::f() {}
+
+int main(int argc, char *argv[]) {
+  A *a = create_B();
+
+  // CFI: =1=
+  // NCFI: =1=
+  fprintf(stderr, "=1=\n");
+  a->f(); // OK
+  // CFI: =2=
+  // NCFI: =2=
+  fprintf(stderr, "=2=\n");
+}
+#endif