Fix i386 memmove issue (bug 22644).

	[BZ #22644]
	* sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S: Fixed
	branch conditions.
	* string/test-memmove.c (do_test2): New testcase.

(cherry picked from commit cd66c0e584c6d692bc8347b5e72723d02b8a8ada)

1 files changed, 58 insertions, 0 deletions

diff --git a/string/test-memmove.c b/string/test-memmove.c
index edc7a4c..64e3651 100644
--- a/string/test-memmove.c
+++ b/string/test-memmove.c
@@ -24,6 +24,7 @@
 # define TEST_NAME "memmove"
 #endif
 #include "test-string.h"
+#include <support/test-driver.h>
 
 char *simple_memmove (char *, const char *, size_t);
 
@@ -245,6 +246,60 @@ do_random_tests (void)
     }
 }
 
+static void
+do_test2 (void)
+{
+  size_t size = 0x20000000;
+  uint32_t * large_buf;
+
+  large_buf = mmap ((void*) 0x70000000, size, PROT_READ | PROT_WRITE,
+		    MAP_PRIVATE | MAP_ANON, -1, 0);
+
+  if (large_buf == MAP_FAILED)
+    error (EXIT_UNSUPPORTED, errno, "Large mmap failed");
+
+  if ((uintptr_t) large_buf > 0x80000000 - 128
+      || 0x80000000 - (uintptr_t) large_buf > 0x20000000)
+    {
+      error (0, 0, "Large mmap allocated improperly");
+      ret = EXIT_UNSUPPORTED;
+      munmap ((void *) large_buf, size);
+      return;
+    }
+
+  size_t bytes_move = 0x80000000 - (uintptr_t) large_buf;
+  size_t arr_size = bytes_move / sizeof (uint32_t);
+  size_t i;
+
+  FOR_EACH_IMPL (impl, 0)
+    {
+      for (i = 0; i < arr_size; i++)
+        large_buf[i] = (uint32_t) i;
+
+      uint32_t * dst = &large_buf[33];
+
+#ifdef TEST_BCOPY
+      CALL (impl, (char *) large_buf, (char *) dst, bytes_move);
+#else
+      CALL (impl, (char *) dst, (char *) large_buf, bytes_move);
+#endif
+
+      for (i = 0; i < arr_size; i++)
+	{
+	  if (dst[i] != (uint32_t) i)
+	    {
+	      error (0, 0,
+		     "Wrong result in function %s dst \"%p\" src \"%p\" offset \"%zd\"",
+		     impl->name, dst, large_buf, i);
+	      ret = 1;
+	      break;
+	    }
+	}
+    }
+
+  munmap ((void *) large_buf, size);
+}
+
 int
 test_main (void)
 {
@@ -284,6 +339,9 @@ test_main (void)
     }
 
   do_random_tests ();
+
+  do_test2 ();
+
   return ret;
 }