[gcc(refs/users/wschmidt/heads/dd2)] rs6000: ROP test cases

[William Schmidt]

https://gcc.gnu.org/g:6870c009b1c41c6386f57b658cdde510dd927eb9

commit 6870c009b1c41c6386f57b658cdde510dd927eb9
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date:   Thu Mar 25 17:55:33 2021 -0500

    rs6000: ROP test cases
    
    2021-03-25  Bill Schmidt  <wschmidt@linux.ibm.com>
    
    gcc/testsuite/
            * gcc.target/powerpc/rop-1.c: New.
            * gcc.target/powerpc/rop-2.c: New.
            * gcc.target/powerpc/rop-3.c: New.
            * gcc.target/powerpc/rop-4.c: New.
            * gcc.target/powerpc/rop-5.c: New.

Diff:
---
 gcc/testsuite/gcc.target/powerpc/rop-1.c | 16 ++++++++++++++++
 gcc/testsuite/gcc.target/powerpc/rop-2.c | 16 ++++++++++++++++
 gcc/testsuite/gcc.target/powerpc/rop-3.c | 18 ++++++++++++++++++
 gcc/testsuite/gcc.target/powerpc/rop-4.c | 14 ++++++++++++++
 gcc/testsuite/gcc.target/powerpc/rop-5.c | 16 ++++++++++++++++
 5 files changed, 80 insertions(+)

diff --git a/gcc/testsuite/gcc.target/powerpc/rop-1.c b/gcc/testsuite/gcc.target/powerpc/rop-1.c
new file mode 100644
index 00000000000..cf8e2b01dda
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/rop-1.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mdejagnu-cpu=power10 -mrop-protect" } */
+
+/* Verify that ROP-protect instructions are inserted when a
+   call is present.  */
+
+extern void foo (void);
+
+int bar ()
+{
+  foo ();
+  return 5;
+}
+
+/* { dg-final { scan-assembler {\mhashst\M} } } */
+/* { dg-final { scan-assembler {\mhashchk\M} } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/rop-2.c b/gcc/testsuite/gcc.target/powerpc/rop-2.c
new file mode 100644
index 00000000000..dde403b0ef5
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/rop-2.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mdejagnu-cpu=power10 -mrop-protect -mprivileged" } */
+
+/* Verify that privileged ROP-protect instructions are inserted when a
+   call is present.  */
+
+extern void foo (void);
+
+int bar ()
+{
+  foo ();
+  return 5;
+}
+
+/* { dg-final { scan-assembler {\mhashstp\M} } } */
+/* { dg-final { scan-assembler {\mhashchkp\M} } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/rop-3.c b/gcc/testsuite/gcc.target/powerpc/rop-3.c
new file mode 100644
index 00000000000..5f29f66d799
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/rop-3.c
@@ -0,0 +1,18 @@
+/* { dg-do run { target { power10_hw } } } */
+/* { dg-require-effective-target power10_ok } */
+/* { dg-options "-O2 -mdejagnu-cpu=power10 -mrop-protect" } */
+
+/* Verify that ROP-protect instructions execute correctly when a
+   call is present.  */
+
+void __attribute__((noinline)) foo ()
+{
+  asm ("");
+}
+
+int main ()
+{
+  foo ();
+  return 0;
+}
+
diff --git a/gcc/testsuite/gcc.target/powerpc/rop-4.c b/gcc/testsuite/gcc.target/powerpc/rop-4.c
new file mode 100644
index 00000000000..e2be8b2c035
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/rop-4.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mdejagnu-cpu=power10 -mrop-protect" } */
+
+/* Verify that no ROP-protect instructions are inserted when no
+   call is present.  */
+
+
+int bar ()
+{
+  return 5;
+}
+
+/* { dg-final { scan-assembler-not {\mhashst\M} } } */
+/* { dg-final { scan-assembler-not {\mhashchk\M} } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/rop-5.c b/gcc/testsuite/gcc.target/powerpc/rop-5.c
new file mode 100644
index 00000000000..c3488816960
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/rop-5.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { power10_hw } } } */
+/* { dg-require-effective-target power10_ok } */
+/* { dg-options "-O2 -mdejagnu-cpu=power10 -mrop-protect" } */
+
+/* Verify that __ROP_PROTECT__ is predefined for -mrop-protect.  */
+
+extern void abort (void);
+
+int main ()
+{
+#ifndef __ROP_PROTECT__
+  abort ();
+#endif
+  return 0;
+}
+