diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/powerpc/Makefile | 1 | ||||
| -rw-r--r-- | sysdeps/powerpc/tst-set_ppr.c | 103 |
3 files changed, 111 insertions, 0 deletions
@@ -1,5 +1,12 @@ 2017-02-21 Wainer dos Santos Moschetta <wainersm@linux.vnet.ibm.com> + * sysdeps/powerpc/tst-set_ppr.c: New file. + Implement test cases for __ppc_set_ppr_* functions. + * sysdeps/powerpc/Makefile ($(subdir),misc): Add tst-set_ppr + in the list of tests. + +2017-02-21 Wainer dos Santos Moschetta <wainersm@linux.vnet.ibm.com> + * sysdeps/powerpc/test-get_hwcap.c: Use <support/test-driver.c> instead of test-skeleton.c. (do_test): Replaced pthread_create and pthread_join with diff --git a/sysdeps/powerpc/Makefile b/sysdeps/powerpc/Makefile index 099fbf68cd..933810fd22 100644 --- a/sysdeps/powerpc/Makefile +++ b/sysdeps/powerpc/Makefile @@ -34,6 +34,7 @@ endif ifeq ($(subdir),misc) sysdep_headers += sys/platform/ppc.h tests += test-gettimebase +tests += tst-set_ppr endif ifneq (,$(filter %le,$(config-machine))) diff --git a/sysdeps/powerpc/tst-set_ppr.c b/sysdeps/powerpc/tst-set_ppr.c new file mode 100644 index 0000000000..77901b58fb --- /dev/null +++ b/sysdeps/powerpc/tst-set_ppr.c @@ -0,0 +1,103 @@ +/* Test the implementation of __ppc_set_ppr_* functions. + Copyright (C) 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/>. */ + +#include <dl-procinfo.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdint.h> +#include <sys/auxv.h> + +#include <sys/platform/ppc.h> + +#include <support/test-driver.h> + +#ifdef __powerpc64__ + typedef uint64_t ppr_t; +# define MFPPR "mfppr" + /* The thread priority value is obtained from bits 11:13. */ +# define EXTRACT_THREAD_PRIORITY(x) ((x >> 50) & 7) +#else + typedef uint32_t ppr_t; +# define MFPPR "mfppr32" + /* For 32-bit, the upper 32 bits of the Program Priority Register (PPR) + are used, so the thread priority value is obtained from bits 43:46. */ +# define EXTRACT_THREAD_PRIORITY(x) ((x >> 18) & 7) +#endif /* !__powerpc64__ */ + +/* Read the thread priority value set in the PPR. */ +static __inline__ ppr_t +get_thread_priority (void) +{ + /* Read the PPR. */ + ppr_t ppr; + asm volatile (MFPPR" %0" : "=r"(ppr)); + /* Return the thread priority value. */ + return EXTRACT_THREAD_PRIORITY (ppr); +} + +/* Check the thread priority bits of PPR are set as expected. */ +uint8_t +check_thread_priority (uint8_t expected) +{ + ppr_t actual = get_thread_priority (); + + if (actual != expected) + { + printf ("FAIL: Expected %"PRIu8" got %"PRIuMAX".\n", expected, + (uintmax_t) actual); + return 1; + } + printf ("PASS: Thread priority set to %"PRIu8" correctly.\n", expected); + return 0; +} + +/* The Power ISA 2.06 allows the following thread priorities for any + problem state program: low (2), medium low (3), and medium (4). + Power ISA 2.07b added very low (1). + Check whether the values set by __ppc_set_ppr_* are correct. */ +static int +do_test (void) +{ + /* Check for the minimum required Power ISA to run these tests. */ + if ((getauxval (AT_HWCAP) & PPC_FEATURE_ARCH_2_06) == 0) + { + printf ("Requires an environment that implements the Power ISA version" + " 2.06 or greater.\n"); + return EXIT_UNSUPPORTED; + } + + uint8_t rc = 0; + +#ifdef _ARCH_PWR8 + __ppc_set_ppr_very_low (); + rc |= check_thread_priority (1); +#endif /* _ARCH_PWR8 */ + + __ppc_set_ppr_low (); + rc |= check_thread_priority (2); + + __ppc_set_ppr_med_low (); + rc |= check_thread_priority (3); + + __ppc_set_ppr_med (); + rc |= check_thread_priority (4); + + return rc; +} + +#include <support/test-driver.c> |