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, 195 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/spu/ea/cache1.c b/gcc/testsuite/gcc.target/spu/ea/cache1.c
new file mode 100644
index 000000000..3487ce980
--- /dev/null
+++ b/gcc/testsuite/gcc.target/spu/ea/cache1.c
@@ -0,0 +1,195 @@
+/* Copyright (C) 2009 Free Software Foundation, Inc.
+
+   This file is free software; you can redistribute it and/or modify it under
+   the terms of the GNU General Public License as published by the Free
+   Software Foundation; either version 3 of the License, or (at your option)
+   any later version.
+
+   This file is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+   for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this file; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+/* { dg-do run } */
+/* { dg-require-effective-target "ealib" } */
+
+#include <stdlib.h>
+#include <string.h>
+#include <ea.h>
+#include <spu_cache.h>
+
+#ifdef __EA64__
+#define addr unsigned long long
+#else
+#define addr unsigned long
+#endif
+
+static __ea void *bigblock;
+static __ea void *block;
+static int *ls_block;
+
+extern char __cache_tag_array_size[];
+#define CACHE_SIZE (4 * (int) &__cache_tag_array_size[0])
+#define LINE_SIZE ((addr)128)
+
+void
+init_mem (void)
+{
+  bigblock = malloc_ea (CACHE_SIZE + 2 * LINE_SIZE);
+  block = malloc_ea (2 * LINE_SIZE);
+  ls_block = malloc (LINE_SIZE);
+
+  memset_ea (bigblock, 0, CACHE_SIZE + 2 * LINE_SIZE);
+  memset_ea (block, -1, 2 * LINE_SIZE);
+  memset (ls_block, -1, LINE_SIZE);
+  cache_flush ();
+}
+
+/* Test 1: Simple cache fetching.  */
+void
+test1 (void)
+{
+  addr aligned = ((((addr) block) + LINE_SIZE - 1) & -LINE_SIZE);
+  int *p1 = NULL;
+  int *p2 = NULL;
+  int i = 0;
+
+  /* First, check if the same addr give the same cache ptr.  */
+  p1 = cache_fetch ((__ea void *) aligned);
+  p2 = cache_fetch ((__ea void *) aligned);
+
+  if (p1 != p2)
+    abort ();
+
+  /* Check that the data actually is in the cache. */
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    {
+      if (p1[i] != -1)
+	abort ();
+    }
+
+  /* Check returning within the cache line. */
+  p2 = cache_fetch ((__ea void *) (aligned + sizeof (int)));
+
+  if (p2 - p1 != 1)
+    abort ();
+
+  /* Finally, check that fetching an LS pointer returns that pointer.  */
+  p1 = cache_fetch ((__ea char *) ls_block);
+  if (p1 != ls_block)
+    abort ();
+}
+
+/* Test 2: Eviction testing. */
+void
+test2 (void)
+{
+  addr aligned = ((((addr) block) + LINE_SIZE - 1) & -LINE_SIZE);
+  int *p = NULL;
+  int i = 0;
+
+  /* First check that clean evictions don't write back.  */
+  p = cache_fetch ((__ea void *) aligned);
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    p[i] = 0;
+
+  cache_evict ((__ea void *) aligned);
+  memcpy_ea ((__ea char *) ls_block, (__ea void *) aligned, LINE_SIZE);
+
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    {
+      if (ls_block[i] == 0)
+	abort ();
+    }
+
+  /* Now check that dirty evictions do write back.  */
+  p = cache_fetch_dirty ((__ea void *) aligned, LINE_SIZE);
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    p[i] = 0;
+
+  cache_evict ((__ea void *) aligned);
+  memcpy_ea ((__ea char *) ls_block, (__ea void *) aligned, LINE_SIZE);
+
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    {
+      if (ls_block[i] != 0)
+	abort ();
+    }
+
+  /* Finally, check that non-atomic writeback only writes dirty bytes.  */
+
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    {
+      p = cache_fetch_dirty ((__ea void *) (aligned + i * sizeof (int)),
+			     (i % 2) * sizeof (int));
+      p[0] = -1;
+    }
+
+  cache_evict ((__ea void *) aligned);
+  memcpy_ea ((__ea char *) ls_block, (__ea void *) aligned, LINE_SIZE);
+
+  for (i = 0; i < LINE_SIZE / sizeof (int); i++)
+    {
+      if ((ls_block[i] == -1) && (i % 2 == 0))
+	abort ();
+      if ((ls_block[i] == 0) && (i % 2 == 1))
+	abort ();
+    }
+}
+
+/* Test LS forced-eviction. */
+void
+test3 (void)
+{
+  addr aligned = ((((addr) bigblock) + LINE_SIZE - 1) & -LINE_SIZE);
+  char *test = NULL;
+  char *ls = NULL;
+  int i = 0;
+
+  /* Init memory, fill the cache to capacity.  */
+  ls = cache_fetch_dirty ((__ea void *) aligned, LINE_SIZE);
+  for (i = 1; i < (CACHE_SIZE / LINE_SIZE); i++)
+    cache_fetch_dirty ((__ea void *) (aligned + i * LINE_SIZE), LINE_SIZE);
+
+  memset (ls, -1, LINE_SIZE);
+  test = cache_fetch ((__ea void *) (aligned + CACHE_SIZE));
+
+  /* test == ls indicates cache collision.  */
+  if (test != ls)
+    abort ();
+
+  /* Make sure it actually wrote the cache line.  */
+  for (i = 0; i < LINE_SIZE; i++)
+    {
+      if (ls[i] != 0)
+	abort ();
+    }
+
+  ls = cache_fetch ((__ea void *) aligned);
+
+  /* test != ls indicates another entry was evicted.  */
+  if (test == ls)
+    abort ();
+
+  /* Make sure that the previous eviction actually wrote back.  */
+  for (i = 0; i < LINE_SIZE; i++)
+    {
+      if (ls[i] != 0xFF)
+	abort ();
+    }
+}
+
+int
+main (int argc, char **argv)
+{
+  init_mem ();
+  test1 ();
+  test2 ();
+  test3 ();
+
+  return 0;
+}