570c443352
On s390x this test failed with: FAIL: explicit clear/test: expected 0 got 1 In setup_explicit_clear, the buffer is filled with the test_pattern. On s390x the memcpy in prepare_test_buffer is done by loading r4 / r5 with the test_pattern and using store multiple instruction to store r4 / r5 to buf. If explicit_bzero is resolved in setup_explicit_clear, r4 / r5 is stored to stack by _dl_runtime_resolve and the call to memmem in count_test_patterns finds a hit of the test_pattern on the stack. This patch resolves all symbols at program startup by linking with -z now. This omits the call of _dl_runtime_resolve within setup_explicit_clear and the test passes. ChangeLog: [BZ #21006] * string/Makefile (LDFLAGS-tst-xbzero-opt): New variable.
108 lines
4.0 KiB
Makefile
108 lines
4.0 KiB
Makefile
# Copyright (C) 1991-2017 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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#
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# Sub-makefile for string portion of library.
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#
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subdir := string
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include ../Makeconfig
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headers := string.h strings.h memory.h endian.h bits/endian.h \
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argz.h envz.h byteswap.h bits/byteswap.h bits/byteswap-16.h \
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bits/string.h bits/string2.h bits/string3.h \
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bits/strings_fortified.h bits/uintn-identity.h
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routines := strcat strchr strcmp strcoll strcpy strcspn \
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strverscmp strdup strndup \
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strerror _strerror strlen strnlen \
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strncat strncmp strncpy \
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strrchr strpbrk strsignal strspn strstr strtok \
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strtok_r strxfrm memchr memcmp memmove memset \
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mempcpy bcopy bzero ffs ffsll stpcpy stpncpy \
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strcasecmp strncase strcasecmp_l strncase_l \
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memccpy memcpy wordcopy strsep strcasestr \
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swab strfry memfrob memmem rawmemchr strchrnul \
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$(addprefix argz-,append count create ctsep next \
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delete extract insert stringify \
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addsep replace) \
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envz basename \
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strcoll_l strxfrm_l string-inlines memrchr \
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xpg-strerror strerror_l explicit_bzero
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strop-tests := memchr memcmp memcpy memmove mempcpy memset memccpy \
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stpcpy stpncpy strcat strchr strcmp strcpy strcspn \
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strlen strncmp strncpy strpbrk strrchr strspn memmem \
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strstr strcasestr strnlen strcasecmp strncasecmp \
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strncat rawmemchr strchrnul bcopy bzero memrchr \
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explicit_bzero
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tests := tester inl-tester noinl-tester testcopy test-ffs \
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tst-strlen stratcliff tst-svc tst-inlcall \
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bug-strncat1 bug-strspn1 bug-strpbrk1 tst-bswap \
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tst-strtok tst-strxfrm bug-strcoll1 tst-strfry \
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bug-strtok1 $(addprefix test-,$(strop-tests)) \
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bug-envz1 tst-strxfrm2 tst-endian tst-svc2 \
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tst-strtok_r bug-strcoll2 tst-cmp tst-xbzero-opt \
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test-endian-types
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xtests = tst-strcoll-overflow
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)tst-svc-cmp.out
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endif
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include ../Rules
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CFLAGS-inl-tester.c = -fno-builtin
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CFLAGS-noinl-tester.c = -fno-builtin
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CFLAGS-tst-strlen.c = -fno-builtin
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CFLAGS-stratcliff.c = -fno-builtin
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CFLAGS-test-ffs.c = -fno-builtin
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CFLAGS-tst-inlcall.c = -fno-builtin
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CFLAGS-tst-xbzero-opt.c = -O3
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# BZ 21006: Resolve all functions but at least explicit_bzero at startup.
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# Otherwise the test fails on s390x as the memcpy in prepare_test_buffer is
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# done by loading r4 / r5 with the test_pattern and using store multiple
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# instruction to store r4 / r5 to buf. If explicit_bzero would be resolved in
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# setup_explicit_clear, r4 / r5 would be stored to stack by _dl_runtime_resolve
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# and the call to memmem in count_test_patterns will find a hit of the
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# test_pattern on the stack.
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LDFLAGS-tst-xbzero-opt = -z now
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# Called during TLS initialization.
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CFLAGS-memcpy.c = $(no-stack-protector)
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CFLAGS-wordcopy.c = $(no-stack-protector)
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ifeq ($(run-built-tests),yes)
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$(objpfx)tst-svc-cmp.out: tst-svc.expect $(objpfx)tst-svc.out
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cmp $^ > $@; \
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$(evaluate-test)
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LOCALES := de_DE.UTF-8 en_US.ISO-8859-1 en_US.UTF-8 \
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tr_TR.ISO-8859-9 tr_TR.UTF-8 cs_CZ.UTF-8 \
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da_DK.ISO-8859-1
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include ../gen-locales.mk
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$(objpfx)test-strcasecmp.out: $(gen-locales)
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$(objpfx)test-strncasecmp.out: $(gen-locales)
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$(objpfx)tst-strxfrm.out: $(gen-locales)
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$(objpfx)tst-strxfrm2.out: $(gen-locales)
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# bug-strcoll2 needs cs_CZ.UTF-8 and da_DK.ISO-8859-1.
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$(objpfx)bug-strcoll2.out: $(gen-locales)
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endif
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