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-rw-r--r--sysdeps/powerpc/test-get_hwcap.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/sysdeps/powerpc/test-get_hwcap.c b/sysdeps/powerpc/test-get_hwcap.c
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+++ b/sysdeps/powerpc/test-get_hwcap.c
@@ -0,0 +1,188 @@
+/* Check __ppc_get_hwcap() and __ppc_get_at_plaftorm() functionality.
+ Copyright (C) 2015 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 <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);
+ void *status;
+
+ long i = 0;
+
+ /* Check for main. */
+ if (check_tcbhwcap (i))
+ {
+ return 1;
+ }
+
+ /* Check for other thread. */
+ i++;
+ if (pthread_create (&threads[i], &attr, t1, (void *)i))
+ {
+ printf ("FAIL: error creating thread %ld.\n", i);
+ return 1;
+ }
+
+ pthread_attr_destroy (&attr);
+ if (pthread_join (threads[i], &status))
+ {
+ printf ("FAIL: error joining thread %ld.\n", i);
+ return 1;
+ }
+ if (status)
+ {
+ return 1;
+ }
+
+ printf("PASS: HWCAP, HWCAP2 and AT_PLATFORM are correctly set in the TCB for"
+ " all threads.\n");
+
+ pthread_exit (NULL);
+
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"