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494eb254c3
Add include/libc-misc.h to provide miscellaneous definitions for both glibc build and test: 1. Move inhibit_stack_protector to libc-misc.h and add Clang support. 2. Add test_inhibit_stack_protector for glibc testing. 3. Move inhibit_loop_to_libcall to libc-misc.h. 4. Add test_cc_inhibit_loop_to_libcall to handle TEST_CC != CC and replace inhibit_loop_to_libcall with test_cc_inhibit_loop_to_libcall in glibc tests. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Co-Authored-By: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Sam James <sam@gentoo.org>
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/* Miscellaneous definitions for both glibc build and test.
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Copyright (C) 2024 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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#ifndef _INCLUDE_MISC_H
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#define _INCLUDE_MISC_H
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#include <config.h>
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/* Add the compiler optimization to inhibit loop transformation to library
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calls. This is used to avoid recursive calls in memset and memmove
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default implementations in tests. */
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#ifdef HAVE_CC_INHIBIT_LOOP_TO_LIBCALL
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# define inhibit_loop_to_libcall \
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__attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns")))
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#else
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# define inhibit_loop_to_libcall
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#endif
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#ifdef HAVE_TEST_CC_INHIBIT_LOOP_TO_LIBCALL
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# define test_cc_inhibit_loop_to_libcall \
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__attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns")))
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#else
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# define test_cc_inhibit_loop_to_libcall
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#endif
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/* Used to disable stack protection in sensitive places, like ifunc
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resolvers and early static TLS init. */
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#ifdef __clang__
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# define cc_inhibit_stack_protector \
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__attribute__((no_stack_protector))
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#else
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# define cc_inhibit_stack_protector \
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__attribute__ ((__optimize__ ("-fno-stack-protector")))
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#endif
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#if IS_IN (testsuite) || IS_IN (testsuite_internal)
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# ifdef HAVE_TEST_CC_NO_STACK_PROTECTOR
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# define test_inhibit_stack_protector cc_inhibit_stack_protector
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# define inhibit_stack_protector cc_inhibit_stack_protector
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# else
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# define test_inhibit_stack_protector
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# define inhibit_stack_protector
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# endif
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#else
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# ifdef HAVE_CC_NO_STACK_PROTECTOR
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# define inhibit_stack_protector cc_inhibit_stack_protector
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# else
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# define test_inhibit_stack_protector
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# endif
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#endif
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#endif
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