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, 95 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/x86_64/abi/test_passing_structs_and_unions.c b/gcc/testsuite/gcc.target/x86_64/abi/test_passing_structs_and_unions.c
new file mode 100644
index 000000000..5b40196d4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/x86_64/abi/test_passing_structs_and_unions.c
@@ -0,0 +1,95 @@
+/* This tests passing of structs. Only integers are tested.  */
+
+#include "defines.h"
+#include "args.h"
+
+struct IntegerRegisters iregs;
+struct FloatRegisters fregs;
+unsigned int num_iregs, num_fregs;
+
+struct int_struct
+{
+  int i;
+};
+
+struct long_struct
+{
+  long l;
+};
+
+struct long2_struct
+{
+  long l1, l2;
+};
+
+struct long3_struct
+{
+  long l1, l2, l3;
+};
+
+union un1
+{
+  char c;
+  int i;
+};
+
+union un2
+{
+  char c1;
+  long l;
+  char c2;
+};
+
+union un3
+{
+  struct int_struct is;
+  struct long_struct ls;
+  union un1 un;
+};
+
+
+void
+check_mixed_passing1 (char c1 ATTRIBUTE_UNUSED, struct int_struct is ATTRIBUTE_UNUSED, char c2 ATTRIBUTE_UNUSED)
+{
+  check_int_arguments;
+}
+
+void
+check_mixed_passing2 (char c1 ATTRIBUTE_UNUSED, struct long3_struct ls ATTRIBUTE_UNUSED, char c2 ATTRIBUTE_UNUSED)
+{
+  check_int_arguments;
+
+  /* Check the passing on the stack by comparing the address of the
+     stack elements to the expected place on the stack.  */
+  assert ((unsigned long)&ls.l1 == rsp+8);
+  assert ((unsigned long)&ls.l2 == rsp+16);
+  assert ((unsigned long)&ls.l3 == rsp+24);
+}
+
+int
+main (void)
+{
+  struct int_struct is = { 64 };
+#ifdef CHECK_LARGER_STRUCTS
+  struct long3_struct l3s = { 65, 66, 67 };
+#endif
+
+  clear_struct_registers;
+  iregs.I0 = 8;
+  iregs.I1 = 64;
+  iregs.I2 = 9;
+  num_iregs = 3;
+  clear_int_hardware_registers;
+  WRAP_CALL (check_mixed_passing1)(8, is, 9);
+
+#ifdef CHECK_LARGER_STRUCTS 
+  clear_struct_registers;
+  iregs.I0 = 10;
+  iregs.I1 = 11;
+  num_iregs = 2;
+  clear_int_hardware_registers;
+  WRAP_CALL (check_mixed_passing2)(10, l3s, 11);
+#endif
+
+  return 0;
+}