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LibC: Properly implement stack protectors

The shared parts are now firmly compiled into LibC instead of being
defined as a static library and then being copied over manually.
The non-shared ("local") parts are kept as a static library that is
linked into each binary on demand.

This finally allows us to support linking with the -fstack-protector
flag, which now replaces the `ssp` target being linked into each binary
accidentally via CMake.
This commit is contained in:
Tim Schumacher 2022-10-25 23:53:07 +02:00 committed by Linus Groh
parent 7834e26ddb
commit 678db534ff
7 changed files with 45 additions and 21 deletions

View file

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/*
* Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <sys/internals.h>
#if defined __SSP__ || defined __SSP_ALL__
# error "file must not be compiled with stack protection enabled on it. Use -fno-stack-protector"
#endif
extern "C" {
__attribute__((noreturn)) void __stack_chk_fail_local()
{
__stack_chk_fail();
}
} // extern "C"