diff options
| author | Thomas Weißschuh <linux@weissschuh.net> | 2023-05-21 11:36:34 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-06-09 11:46:08 -0700 |
| commit | 818924d1295ea16db267ea6defe08b21243583b6 (patch) | |
| tree | 96c0095bd3e7dfd8210835f1db2d1149ad36a0d7 /tools/include/nolibc/compiler.h | |
| parent | e21a2eef74305b9ec2b8dcecf364aeb5e2e10e2e (diff) | |
tools/nolibc: add autodetection for stackprotector support
The stackprotector support in nolibc should be enabled iff it is also
enabled in the compiler.
Use the preprocessor defines added by gcc and clang if stackprotector
support is enable to automatically do so in nolibc.
This completely removes the need for any user-visible API.
To avoid inlining the lengthy preprocessor check into every user
introduce a new header compiler.h that abstracts the logic away.
As the define NOLIBC_STACKPROTECTOR is now not user-relevant anymore
prefix it with an underscore.
Suggested-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/lkml/20230520133237.GA27501@1wt.eu/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/include/nolibc/compiler.h')
| -rw-r--r-- | tools/include/nolibc/compiler.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/include/nolibc/compiler.h b/tools/include/nolibc/compiler.h new file mode 100644 index 000000000000..57da75cea799 --- /dev/null +++ b/tools/include/nolibc/compiler.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * NOLIBC compiler support header + * Copyright (C) 2023 Thomas Weißschuh <linux@weissschuh.net> + */ +#ifndef _NOLIBC_COMPILER_H +#define _NOLIBC_COMPILER_H + +#if defined(__SSP__) || defined(__SSP_STRONG__) || defined(__SSP_ALL__) || defined(__SSP_EXPLICIT__) + +#define _NOLIBC_STACKPROTECTOR + +#endif /* defined(__SSP__) ... */ + +#endif /* _NOLIBC_COMPILER_H */ |