diff options
Diffstat (limited to 'sysdeps/powerpc/test-get_hwcap.c')
| -rw-r--r-- | sysdeps/powerpc/test-get_hwcap.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/sysdeps/powerpc/test-get_hwcap.c b/sysdeps/powerpc/test-get_hwcap.c new file mode 100644 index 0000000..11aa840 --- /dev/null +++ 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" |