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688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
178 lines
4.4 KiB
C
178 lines
4.4 KiB
C
/* Check __ppc_get_hwcap() and __ppc_get_at_plaftorm() functionality.
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Copyright (C) 2015-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* Tests if the hwcap, hwcap2 and platform data are stored in the TCB. */
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <pthread.h>
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#include <support/check.h>
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#include <support/xthread.h>
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#include <sys/auxv.h>
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#include <dl-procinfo.h>
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#ifndef STATIC_TST_HWCAP
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#undef PROCINFO_DECL
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#include <dl-procinfo.c>
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#endif
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/* Offsets copied from tcb-offsets.h. */
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#ifdef __powerpc64__
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# define __TPREG "r13"
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# define __HWCAPOFF -28776
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# define __ATPLATOFF -28764
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#else
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# define __TPREG "r2"
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# define __HWCAPOFF -28736
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# define __HWCAP2OFF -28732
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# define __ATPLATOFF -28724
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#endif
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uint64_t check_tcbhwcap (long tid)
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{
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uint32_t tcb_at_platform, at_platform;
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uint64_t hwcap, hwcap2, tcb_hwcap;
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const char *at_platform_string;
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/* Testing if the hwcap/hwcap2 data is correctly initialized by
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TLS_TP_INIT. */
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register unsigned long __tp __asm__ (__TPREG);
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#ifdef __powerpc64__
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__asm__ ("ld %0,%1(%2)\n"
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: "=r" (tcb_hwcap)
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: "i" (__HWCAPOFF), "b" (__tp));
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#else
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uint64_t h1, h2;
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__asm__ ("lwz %0,%1(%2)\n"
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: "=r" (h1)
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: "i" (__HWCAPOFF), "b" (__tp));
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__asm__ ("lwz %0,%1(%2)\n"
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: "=r" (h2)
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: "i" (__HWCAP2OFF), "b" (__tp));
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tcb_hwcap = (h1 >> 32) << 32 | (h2 >> 32);
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#endif
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hwcap = getauxval (AT_HWCAP);
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hwcap2 = getauxval (AT_HWCAP2);
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/* hwcap contains only the latest supported ISA, the code checks which is
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and fills the previous supported ones. This is necessary because the
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same is done in hwcapinfo.c when setting the values that are copied to
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the TCB. */
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if (hwcap2 & PPC_FEATURE2_ARCH_2_07)
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hwcap |= PPC_FEATURE_ARCH_2_06
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| PPC_FEATURE_ARCH_2_05
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| PPC_FEATURE_POWER5_PLUS
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| PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_ARCH_2_06)
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hwcap |= PPC_FEATURE_ARCH_2_05
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| PPC_FEATURE_POWER5_PLUS
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| PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_ARCH_2_05)
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hwcap |= PPC_FEATURE_POWER5_PLUS
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| PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_POWER5_PLUS)
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hwcap |= PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_POWER5)
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hwcap |= PPC_FEATURE_POWER4;
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hwcap = (hwcap << 32) + hwcap2;
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if ( tcb_hwcap != hwcap )
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{
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printf ("FAIL: __ppc_get_hwcap() - HWCAP is %" PRIx64 ". Should be %"
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PRIx64 " for thread %ld.\n", tcb_hwcap, hwcap, tid);
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return 1;
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}
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/* Same test for the platform number. */
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__asm__ ("lwz %0,%1(%2)\n"
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: "=r" (tcb_at_platform)
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: "i" (__ATPLATOFF), "b" (__tp));
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at_platform_string = (const char *) getauxval (AT_PLATFORM);
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at_platform = _dl_string_platform (at_platform_string);
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if ( tcb_at_platform != at_platform )
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{
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printf ("FAIL: __ppc_get_at_platform() - AT_PLATFORM is %x. Should be %x"
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" for thread %ld\n", tcb_at_platform, at_platform, tid);
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return 1;
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}
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return 0;
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}
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void *t1 (void *tid)
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{
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if (check_tcbhwcap ((long) tid))
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{
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pthread_exit (tid);
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}
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pthread_exit (NULL);
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}
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static int
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do_test (void)
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{
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pthread_t threads[2];
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pthread_attr_t attr;
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pthread_attr_init (&attr);
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pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_JOINABLE);
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long i = 0;
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/* Check for main. */
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if (check_tcbhwcap (i))
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{
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return 1;
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}
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/* Check for other thread. */
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i++;
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threads[i] = xpthread_create (&attr, t1, (void *)i);
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pthread_attr_destroy (&attr);
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TEST_VERIFY_EXIT (xpthread_join (threads[i]) == NULL);
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printf("PASS: HWCAP, HWCAP2 and AT_PLATFORM are correctly set in the TCB for"
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" all threads.\n");
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pthread_exit (NULL);
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}
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#include <support/test-driver.c>
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