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authorThomas Weißschuh <thomas.weissschuh@linutronix.de>2025-04-16 14:06:22 +0200
committerThomas Weißschuh <linux@weissschuh.net>2025-04-19 14:22:26 +0200
commit0fd55773f47124ee27a1d201bb07649a056c58cc (patch)
tree0f63c567fd1c2579bc1a074da1d482c2ca1d4050 /tools/include/nolibc/sys/syscall.h
parentc6e6c2c4d71035038d0ef07a465190cd35e193e8 (diff)
tools/nolibc: move syscall() to sys/syscall.h
This is the location regular userspace expects the definition. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-7-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Diffstat (limited to 'tools/include/nolibc/sys/syscall.h')
-rw-r--r--tools/include/nolibc/sys/syscall.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/include/nolibc/sys/syscall.h b/tools/include/nolibc/sys/syscall.h
new file mode 100644
index 000000000000..59efdec8fd1c
--- /dev/null
+++ b/tools/include/nolibc/sys/syscall.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * syscall() definition for NOLIBC
+ * Copyright (C) 2024 Thomas Weißschuh <linux@weissschuh.net>
+ */
+
+#ifndef _NOLIBC_SYS_SYSCALL_H
+#define _NOLIBC_SYS_SYSCALL_H
+
+#define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N
+#define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
+#define _syscall(N, ...) __sysret(my_syscall##N(__VA_ARGS__))
+#define _syscall_n(N, ...) _syscall(N, __VA_ARGS__)
+#define syscall(...) _syscall_n(_syscall_narg(__VA_ARGS__), ##__VA_ARGS__)
+
+/* make sure to include all global symbols */
+#include "../nolibc.h"
+
+#endif /* _NOLIBC_SYS_SYSCALL_H */