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After the nolibc includes were split to facilitate portability from standard libcs, programs that include only what they need may miss some symbols which are needed by libgcc. This is the case for raise() which is needed by the divide by zero code in some architectures for example. Regardless, being able to include only the apparently needed files is convenient. Instead of trying to move all exported definitions to a single file, since this can change over time, this patch takes another approach consisting in including the nolibc header at the end of all standard include files. This way their types and functions are already known at the moment of inclusion, and including any single one of them is sufficient to bring all the required ones. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
25 lines
575 B
C
25 lines
575 B
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* signal function definitions for NOLIBC
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* Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
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*/
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#ifndef _NOLIBC_SIGNAL_H
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#define _NOLIBC_SIGNAL_H
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#include "std.h"
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#include "arch.h"
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#include "types.h"
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#include "sys.h"
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/* This one is not marked static as it's needed by libgcc for divide by zero */
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__attribute__((weak,unused,section(".text.nolibc_raise")))
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int raise(int signal)
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{
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return sys_kill(sys_getpid(), signal);
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}
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/* make sure to include all global symbols */
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#include "nolibc.h"
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#endif /* _NOLIBC_SIGNAL_H */
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