linux-kernel - [PATCH v4 01/24] elf, uapi: Add a header for relocation constants

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Message-Id: <20250812-vdso-absolute-reloc-v4-1-61a8b615e5ec@linutronix.de>
Date: Tue, 12 Aug 2025 07:44:14 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
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Subject: [PATCH v4 01/24] elf, uapi: Add a header for relocation constants

While the numeric constants for relocations are architecture specific,
it is still useful to get access to them from other architectures.
Also the definitions are useful for userspace in general.
For example tools processing elf files during a kernel cross-compilation
can make use of them.

Introduce a dedicated header for them, similar to the elf-em.h header.
For now the header is empty but it will be filled step by step in
upcomming commits.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 include/uapi/linux/elf-r.h | 5 +++++
 include/uapi/linux/elf.h   | 1 +
 2 files changed, 6 insertions(+)

diff --git a/include/uapi/linux/elf-r.h b/include/uapi/linux/elf-r.h
new file mode 100644
index 0000000000000000000000000000000000000000..2c382c8a4807f394a3ccabf39a81e9e9b6f7ea45
--- /dev/null
+++ b/include/uapi/linux/elf-r.h
@@ -0,0 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_LINUX_ELF_R_H
+#define _UAPI_LINUX_ELF_R_H
+
+#endif /* _UAPI_LINUX_ELF_R_H */
diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 819ded2d39de2bfcfca3c25a52c8b8cd51a01c12..3d18543d5460a757f0578afe5d487233ffaa3c57 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -4,6 +4,7 @@

 #include <linux/types.h>
 #include <linux/elf-em.h>
+#include <linux/elf-r.h>

 /* 32-bit ELF base types. */
 typedef __u32	Elf32_Addr;

-- 
2.50.1