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Message-Id: <20250812-vdso-absolute-reloc-v4-3-61a8b615e5ec@linutronix.de>
Date: Tue, 12 Aug 2025 07:44:16 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Paul Walmsley <paul.walmsley@...ive.com>,
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Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
llvm@...ts.linux.dev, linux-mm@...ck.org, linux-um@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
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linux-mips@...r.kernel.org, rust-for-linux@...r.kernel.org,
linux-kbuild@...r.kernel.org, Jan Stancek <jstancek@...hat.com>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Alexandre Ghiti <alexghiti@...osinc.com>,
Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH v4 03/24] ARM: elf: Move relocation constants to UAPI
These constants are useful for cross-platform userspace, for example to
process ELF files during kernel cross-compilation.
Move them from the kernel-private architecture-specific header to the UAPI.
One arm64 header is also changed as it duplicates an arm definition.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
arch/arm/include/asm/elf.h | 24 ------------------------
arch/arm64/include/asm/elf.h | 1 -
include/uapi/linux/elf-r.h | 25 +++++++++++++++++++++++++
3 files changed, 25 insertions(+), 25 deletions(-)
diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
index 9f21e170320fc57f1dc21a33d637bcfd3d1d3917..ec2d416baa9f7ef4b860c4a18b2e2bf2f05e4a9d 100644
--- a/arch/arm/include/asm/elf.h
+++ b/arch/arm/include/asm/elf.h
@@ -47,30 +47,6 @@ typedef struct user_fp elf_fpregset_t;
#define EF_ARM_HASENTRY 0x00000002 /* All */
#define EF_ARM_RELEXEC 0x00000001 /* All */
-#define R_ARM_NONE 0
-#define R_ARM_PC24 1
-#define R_ARM_ABS32 2
-#define R_ARM_REL32 3
-#define R_ARM_CALL 28
-#define R_ARM_JUMP24 29
-#define R_ARM_TARGET1 38
-#define R_ARM_V4BX 40
-#define R_ARM_PREL31 42
-#define R_ARM_MOVW_ABS_NC 43
-#define R_ARM_MOVT_ABS 44
-#define R_ARM_MOVW_PREL_NC 45
-#define R_ARM_MOVT_PREL 46
-#define R_ARM_ALU_PC_G0_NC 57
-#define R_ARM_ALU_PC_G1_NC 59
-#define R_ARM_LDR_PC_G2 63
-
-#define R_ARM_THM_CALL 10
-#define R_ARM_THM_JUMP24 30
-#define R_ARM_THM_MOVW_ABS_NC 47
-#define R_ARM_THM_MOVT_ABS 48
-#define R_ARM_THM_MOVW_PREL_NC 49
-#define R_ARM_THM_MOVT_PREL 50
-
/*
* These are used to set parameters in the core dumps.
*/
diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h
index 3f93f4eef9530a7b5bc966bf4a16d83093a016ee..8efcfe7efe0c70c59b9b81f93ac9c1442bc7656a 100644
--- a/arch/arm64/include/asm/elf.h
+++ b/arch/arm64/include/asm/elf.h
@@ -18,7 +18,6 @@
*/
/* Miscellaneous. */
-#define R_ARM_NONE 0
#define R_AARCH64_NONE 256
/* Data. */
diff --git a/include/uapi/linux/elf-r.h b/include/uapi/linux/elf-r.h
index 45a160ecf40570f3ac916344be363d7e74908ea6..001884641e7703146f91e2dd96fb5a2bbfc7a324 100644
--- a/include/uapi/linux/elf-r.h
+++ b/include/uapi/linux/elf-r.h
@@ -36,4 +36,29 @@
#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
#define R_X86_64_PC64 24 /* Place relative 64-bit signed */
+/* arm relocation types */
+#define R_ARM_NONE 0
+#define R_ARM_PC24 1
+#define R_ARM_ABS32 2
+#define R_ARM_REL32 3
+#define R_ARM_CALL 28
+#define R_ARM_JUMP24 29
+#define R_ARM_TARGET1 38
+#define R_ARM_V4BX 40
+#define R_ARM_PREL31 42
+#define R_ARM_MOVW_ABS_NC 43
+#define R_ARM_MOVT_ABS 44
+#define R_ARM_MOVW_PREL_NC 45
+#define R_ARM_MOVT_PREL 46
+#define R_ARM_ALU_PC_G0_NC 57
+#define R_ARM_ALU_PC_G1_NC 59
+#define R_ARM_LDR_PC_G2 63
+
+#define R_ARM_THM_CALL 10
+#define R_ARM_THM_JUMP24 30
+#define R_ARM_THM_MOVW_ABS_NC 47
+#define R_ARM_THM_MOVT_ABS 48
+#define R_ARM_THM_MOVW_PREL_NC 49
+#define R_ARM_THM_MOVT_PREL 50
+
#endif /* _UAPI_LINUX_ELF_R_H */
--
2.50.1
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