linux-kernel - [PATCH 5/6] m32r: Add memcpy() for CONFIG_KERNEL

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Message-Id: <1342214427-17607-5-git-send-email-geert@linux-m68k.org>
Date:	Fri, 13 Jul 2012 23:20:26 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Hirokazu Takata <takata@...ux-m32r.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-m32r@...linux-m32r.org, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH 5/6] m32r: Add memcpy() for CONFIG_KERNEL_GZIP=y

  LD      arch/m32r/boot/compressed/vmlinux
arch/m32r/boot/compressed/misc.o: In function `zlib_updatewindow':
misc.c:(.text+0x190): undefined reference to `memcpy'
misc.c:(.text+0x190): relocation truncated to fit: R_M32R_26_PLTREL against undefined symbol `memcpy'
misc.c:(.text+0x1e0): undefined reference to `memcpy'
misc.c:(.text+0x1e0): relocation truncated to fit: R_M32R_26_PLTREL against undefined symbol `memcpy'
misc.c:(.text+0x218): undefined reference to `memcpy'
misc.c:(.text+0x218): relocation truncated to fit: R_M32R_26_PLTREL against undefined symbol `memcpy'
arch/m32r/boot/compressed/misc.o: In function `zlib_inflate':
misc.c:(.text+0x171c): undefined reference to `memcpy'
misc.c:(.text+0x171c): relocation truncated to fit: R_M32R_26_PLTREL against undefined symbol `memcpy'
make[5]: *** [arch/m32r/boot/compressed/vmlinux] Error 1

Add our own implementation of memcpy() to fix this.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 arch/m32r/boot/compressed/misc.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/m32r/boot/compressed/misc.c b/arch/m32r/boot/compressed/misc.c
index 370d608..3147aa2 100644
--- a/arch/m32r/boot/compressed/misc.c
+++ b/arch/m32r/boot/compressed/misc.c
@@ -39,6 +39,16 @@ static void *memset(void *s, int c, size_t n)
 #endif
 
 #ifdef CONFIG_KERNEL_GZIP
+void *memcpy(void *dest, const void *src, size_t n)
+{
+	char *d = dest;
+	const char *s = src;
+	while (n--)
+		*d++ = *s++;
+
+	return dest;
+}
+
 #define BOOT_HEAP_SIZE             0x10000
 #include "../../../../lib/decompress_inflate.c"
 #endif
-- 
1.7.0.4

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