obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 38 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/ms_hook_prologue.c b/gcc/testsuite/gcc.target/i386/ms_hook_prologue.c
new file mode 100644
index 000000000..e11bcc049
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/ms_hook_prologue.c
@@ -0,0 +1,38 @@
+/* Test that the ms_hook_prologue attribute generates the correct code.  */
+
+/* { dg-do run } */
+/* { dg-require-effective-target ms_hook_prologue } */
+/* { dg-options "-O2 -fomit-frame-pointer" } */
+
+int __attribute__ ((__ms_hook_prologue__)) foo ()
+{
+  unsigned char *ptr = (unsigned char *) foo;
+
+  /* The NOP mov must not be optimized away by optimizations.
+     The push %ebp, mov %esp, %ebp must not be removed by
+     -fomit-frame-pointer */
+#ifndef __x86_64__
+  /* movl.s %edi, %edi */
+  if(*ptr++ != 0x8b) return 1;
+  if(*ptr++ != 0xff) return 1;
+  /* push %ebp */
+  if(*ptr++ != 0x55) return 1;
+  /* movl.s %esp, %ebp */
+  if(*ptr++ != 0x8b) return 1;
+  if(*ptr++ != 0xec) return 1;
+#else
+  /* leaq 0(%rsp), %rsp */
+  if (*ptr++ != 0x48) return 1;
+  if (*ptr++ != 0x8d) return 1;
+  if (*ptr++ != 0xa4) return 1;
+  if (*ptr++ != 0x24) return 1;
+  if (ptr[0] != 0 || ptr[1] != 0 || ptr[2] != 0 || ptr[3] != 0)
+    return 1;
+#endif
+  return 0;
+}
+
+int main ()
+{
+  return foo();
+}