Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 177 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/powerpc/test-get_hwcap.c b/REORG.TODO/sysdeps/powerpc/test-get_hwcap.c
new file mode 100644
index 0000000000..d776310734
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/test-get_hwcap.c
@@ -0,0 +1,177 @@
+/* Check __ppc_get_hwcap() and __ppc_get_at_plaftorm() functionality.
+   Copyright (C) 2015-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Tests if the hwcap, hwcap2 and platform data are stored in the TCB.  */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <pthread.h>
+
+#include <support/check.h>
+#include <support/xthread.h>
+
+#include <sys/auxv.h>
+
+#include <dl-procinfo.h>
+
+#ifndef STATIC_TST_HWCAP
+#undef PROCINFO_DECL
+#include <dl-procinfo.c>
+#endif
+
+/* Offsets copied from tcb-offsets.h.  */
+
+#ifdef __powerpc64__
+# define __TPREG     "r13"
+# define __HWCAPOFF -28776
+# define __ATPLATOFF -28764
+#else
+# define __TPREG     "r2"
+# define __HWCAPOFF -28736
+# define __HWCAP2OFF -28732
+# define __ATPLATOFF -28724
+#endif
+
+uint64_t check_tcbhwcap (long tid)
+{
+
+  uint32_t tcb_at_platform, at_platform;
+  uint64_t hwcap, hwcap2, tcb_hwcap;
+  const char *at_platform_string;
+
+  /* Testing if the hwcap/hwcap2 data is correctly initialized by
+     TLS_TP_INIT.  */
+
+  register unsigned long __tp __asm__ (__TPREG);
+
+#ifdef __powerpc64__
+  __asm__  ("ld %0,%1(%2)\n"
+	    : "=r" (tcb_hwcap)
+	    : "i" (__HWCAPOFF), "b" (__tp));
+#else
+  uint64_t h1, h2;
+
+  __asm__ ("lwz %0,%1(%2)\n"
+      : "=r" (h1)
+      : "i" (__HWCAPOFF), "b" (__tp));
+  __asm__ ("lwz %0,%1(%2)\n"
+      : "=r" (h2)
+      : "i" (__HWCAP2OFF), "b" (__tp));
+  tcb_hwcap = (h1 >> 32) << 32 | (h2 >> 32);
+#endif
+
+  hwcap = getauxval (AT_HWCAP);
+  hwcap2 = getauxval (AT_HWCAP2);
+
+  /* hwcap contains only the latest supported ISA, the code checks which is
+     and fills the previous supported ones.  This is necessary because the
+     same is done in hwcapinfo.c when setting the values that are copied to
+     the TCB.  */
+
+  if (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+    hwcap |= PPC_FEATURE_ARCH_2_06
+	  | PPC_FEATURE_ARCH_2_05
+	  | PPC_FEATURE_POWER5_PLUS
+	  | PPC_FEATURE_POWER5
+	  | PPC_FEATURE_POWER4;
+  else if (hwcap & PPC_FEATURE_ARCH_2_06)
+    hwcap |= PPC_FEATURE_ARCH_2_05
+	  | PPC_FEATURE_POWER5_PLUS
+	  | PPC_FEATURE_POWER5
+	  | PPC_FEATURE_POWER4;
+  else if (hwcap & PPC_FEATURE_ARCH_2_05)
+    hwcap |= PPC_FEATURE_POWER5_PLUS
+	  | PPC_FEATURE_POWER5
+	  | PPC_FEATURE_POWER4;
+  else if (hwcap & PPC_FEATURE_POWER5_PLUS)
+    hwcap |= PPC_FEATURE_POWER5
+	  | PPC_FEATURE_POWER4;
+  else if (hwcap & PPC_FEATURE_POWER5)
+    hwcap |= PPC_FEATURE_POWER4;
+
+  hwcap = (hwcap << 32) + hwcap2;
+
+  if ( tcb_hwcap != hwcap )
+    {
+      printf ("FAIL: __ppc_get_hwcap() - HWCAP is %" PRIx64 ". Should be %"
+	      PRIx64 " for thread %ld.\n", tcb_hwcap, hwcap, tid);
+      return 1;
+    }
+
+  /* Same test for the platform number.  */
+  __asm__  ("lwz %0,%1(%2)\n"
+	    : "=r" (tcb_at_platform)
+	    : "i" (__ATPLATOFF), "b" (__tp));
+
+  at_platform_string = (const char *) getauxval (AT_PLATFORM);
+  at_platform = _dl_string_platform (at_platform_string);
+
+  if ( tcb_at_platform != at_platform )
+    {
+      printf ("FAIL: __ppc_get_at_platform() - AT_PLATFORM is %x. Should be %x"
+	     " for thread %ld\n", tcb_at_platform, at_platform, tid);
+      return 1;
+    }
+
+  return 0;
+}
+
+void *t1 (void *tid)
+{
+  if (check_tcbhwcap ((long) tid))
+    {
+      pthread_exit (tid);
+    }
+
+  pthread_exit (NULL);
+
+}
+
+static int
+do_test (void)
+{
+
+  pthread_t threads[2];
+  pthread_attr_t attr;
+  pthread_attr_init (&attr);
+  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_JOINABLE);
+
+  long i = 0;
+
+  /* Check for main.  */
+  if (check_tcbhwcap (i))
+    {
+      return 1;
+    }
+
+  /* Check for other thread.  */
+  i++;
+  threads[i] = xpthread_create (&attr, t1, (void *)i);
+
+  pthread_attr_destroy (&attr);
+  TEST_VERIFY_EXIT (xpthread_join (threads[i]) == NULL);
+
+  printf("PASS: HWCAP, HWCAP2 and AT_PLATFORM are correctly set in the TCB for"
+	 " all threads.\n");
+
+  pthread_exit (NULL);
+
+}
+
+#include <support/test-driver.c>