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0c03cb54c8
The new IBM z16 is added to platform string array.
The macro _DL_PLATFORMS_COUNT is incremented.
_dl_hwcaps_subdir is extended by "z16" if HWCAP_S390_VXRS_PDE2
is set. HWCAP_S390_NNPA is not tested in _dl_hwcaps_subdirs_active
as those instructions may be replaced or removed in future.
tst-glibc-hwcaps.c is extended in order to test z16 via new marker5.
A fatal glibc error is dumped if glibc was build with architecture
level set for z16, but run on an older machine. (See dl-hwcap-check.h)
(cherry picked from commit 2376944b9e)
87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/* glibc-hwcaps subdirectory test. s390x version.
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Copyright (C) 2020-2021 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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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <string.h>
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#include <support/check.h>
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#include <sys/auxv.h>
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#include <sys/param.h>
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extern int marker2 (void);
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extern int marker3 (void);
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extern int marker4 (void);
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extern int marker5 (void);
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/* Return the arch level, 10 for the baseline libmarkermod*.so's. */
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static int
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compute_level (void)
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{
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const char *platform = (const char *) getauxval (AT_PLATFORM);
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/* The arch* versions refer to the edition of the Principles of
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Operation, and they are off by two when compared with the recent
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product names. (The code below should not be considered an
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accurate mapping to Principles of Operation editions for earlier
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AT_PLATFORM strings). */
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if (strcmp (platform, "z900") == 0)
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return 10;
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if (strcmp (platform, "z990") == 0)
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return 10;
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if (strcmp (platform, "z9-109") == 0)
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return 10;
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if (strcmp (platform, "z10") == 0)
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return 10;
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if (strcmp (platform, "z196") == 0)
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return 10;
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if (strcmp (platform, "zEC12") == 0)
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return 10;
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/* If we are running on z13 or newer and the kernel was booted with novx,
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then AT_PLATFORM is z13 or newer, but _dl_hwcaps_subdirs_active will
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return zero and the _dl_hwcaps_subdirs are not searched. */
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const unsigned long int hwcap = getauxval (AT_HWCAP);
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if ((hwcap & HWCAP_S390_VX) == 0)
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return 10;
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if (strcmp (platform, "z13") == 0)
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return 11;
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if (strcmp (platform, "z14") == 0)
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return 12;
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if (strcmp (platform, "z15") == 0)
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return 13;
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if (strcmp (platform, "z16") == 0)
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return 14;
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printf ("warning: unrecognized AT_PLATFORM value: %s\n", platform);
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/* Assume that the new platform supports z16. */
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return 14;
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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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int level = compute_level ();
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printf ("info: detected architecture level: arch%d\n", level);
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TEST_COMPARE (marker2 (), MIN (level - 9, 2));
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TEST_COMPARE (marker3 (), MIN (level - 9, 3));
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TEST_COMPARE (marker4 (), MIN (level - 9, 4));
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TEST_COMPARE (marker5 (), MIN (level - 9, 5));
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return 0;
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}
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#include <support/test-driver.c>
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