| /* Check __ppc_get_hwcap() and __ppc_get_at_plaftorm() functionality. |
| Copyright (C) 2015-2018 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> |