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2c421fc430
Now we finally support modern GCC and binutils, it's time for a cleanup. Use PAC and BTI instructions unconditionally and use proper assembler syntax. Remove the PR target/94791 strip_pac workarounds for buggy GCCs. Remove the PAC/BTI configure checks - always emit GNU property notes on assembly files. Change cfi_window_save to the correct cfi_negate_ra_state unwind directive. Reviewed-by: Matthieu Longo <matthieu.longo@arm.com>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* Test header that defines macros for GNU properties that need to be
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used in some test assembly files where sysdep.h cannot be included
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for some reason.
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Copyright (C) 2024-2025 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 <config.h>
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#ifdef __aarch64__
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/* GNU_PROPERTY_AARCH64_* macros from elf.h for use in asm code. */
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#define FEATURE_1_AND 0xc0000000
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#define FEATURE_1_BTI 1
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#define FEATURE_1_PAC 2
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#define FEATURE_1_GCS 4
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/* Add a NT_GNU_PROPERTY_TYPE_0 note. */
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#define GNU_PROPERTY(type, value) \
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.section .note.gnu.property, "a"; \
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.p2align 3; \
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.word 4; \
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.word 16; \
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.word 5; \
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.asciz "GNU"; \
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.word type; \
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.word 4; \
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.word value; \
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.word 0; \
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.text
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/* Add GNU property note with the supported features to all asm code
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where sysdep.h is included. */
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GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI|FEATURE_1_PAC|FEATURE_1_GCS)
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#endif
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