[PATCH 15/78] ARM: aarch64: Add runtime-offset

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 arch/arm/lib64/Makefile         |  1 +
 arch/arm/lib64/runtime-offset.S | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 arch/arm/lib64/runtime-offset.S

diff --git a/arch/arm/lib64/Makefile b/arch/arm/lib64/Makefile
index 4b7b7e3cc5..679ca556e5 100644
--- a/arch/arm/lib64/Makefile
+++ b/arch/arm/lib64/Makefile
@@ -3,5 +3,6 @@ obj-y	+= div0.o
 obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS)	+= memcpy.o
 obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS)	+= memset.o
 extra-y += barebox.lds
+obj-pbl-y   += runtime-offset.o
 
 pbl-y	+= div0.o
diff --git a/arch/arm/lib64/runtime-offset.S b/arch/arm/lib64/runtime-offset.S
new file mode 100644
index 0000000000..177ca64784
--- /dev/null
+++ b/arch/arm/lib64/runtime-offset.S
@@ -0,0 +1,19 @@
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+.section ".text_bare_init","ax"
+
+/*
+ * Get the offset between the link address and the address
+ * we are currently running at.
+ */
+ENTRY(get_runtime_offset)
+1:	adr x0, 1b
+	ldr x1, linkadr
+	subs x0, x0, x1
+	ret
+
+.align 3
+linkadr:
+.quad get_runtime_offset
+ENDPROC(get_runtime_offset)
-- 
2.16.1