linux-kernel - [PATCH] arm: LLVMLinux: Provide __aeabi_* symbols which are needed for clang

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Message-Id: <1409959121-12630-1-git-send-email-behanw@converseincode.com>
Date:	Fri,  5 Sep 2014 16:18:41 -0700
From:	behanw@...verseincode.com
To:	ard.biesheuvel@...aro.org, kim.phillips@...escale.com,
	linus.walleij@...aro.org, linux@....linux.org.uk
Cc:	David.Woodhouse@...el.com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Behan Webster <behanw@...verseincode.com>,
	Mark Charlebois <charlebm@...il.com>
Subject: [PATCH] arm: LLVMLinux: Provide __aeabi_* symbols which are needed for clang

From: Behan Webster <behanw@...verseincode.com>

These symbols are required when compiling the Linux kernel for arch ARM with
clang.

Author: Mark Charlebois <charlebm@...il.com>
Signed-off-by: Mark Charlebois <charlebm@...il.com>
Signed-off-by: Behan Webster <behanw@...verseincode.com>
---
 arch/arm/lib/Makefile |  4 ++++
 arch/arm/lib/eabi.c   | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 arch/arm/lib/eabi.c

diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 0573faa..b585fcf 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -15,6 +15,10 @@ lib-y		:= backtrace.o changebit.o csumipv6.o csumpartial.o   \
 		   io-readsb.o io-writesb.o io-readsl.o io-writesl.o  \
 		   call_with_stack.o bswapsdi2.o
 
+ifeq ($(COMPILER),clang)
+lib-y += eabi.o
+endif
+
 mmu-y	:= clear_user.o copy_page.o getuser.o putuser.o
 
 # the code in uaccess.S is not preemption safe and
diff --git a/arch/arm/lib/eabi.c b/arch/arm/lib/eabi.c
new file mode 100644
index 0000000..41b27b2
--- /dev/null
+++ b/arch/arm/lib/eabi.c
@@ -0,0 +1,32 @@
+/*
+ *  linux/lib/eabi.c
+ *
+ *  Copyright (C) 2012  Mark Charlebois
+ */
+
+/*
+ * EABI routines
+ */
+
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/export.h>
+
+void __aeabi_memcpy(void *dest, const void *src, size_t n)
+{
+	(void)memcpy(dest, src, n);
+}
+EXPORT_SYMBOL(__aeabi_memcpy);
+
+void __aeabi_memmove(void *dest, const void *src, size_t n)
+{
+	(void)memmove(dest, src, n);
+}
+EXPORT_SYMBOL(__aeabi_memmove);
+
+void __aeabi_memset(void *s, size_t n, int c)
+{
+	(void)memset(s, c, n);
+}
+EXPORT_SYMBOL(__aeabi_memset);
-- 
1.9.1

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