linux: fix mips boot decompressor build

Replace the now defunct 062-mips_decompressor_build_fix.patch with another
patch that simply undefines the arch memset and memcpy defines to avoid
syntax errors in the redeclaration.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44223 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Jo-Philipp Wich 2015-01-30 10:04:23 +00:00
parent a6c25ecffc
commit 65b02ac916
2 changed files with 18 additions and 64 deletions

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@ -1,64 +0,0 @@
From 0db3db45f5bd6df4bdc03bbd5dec672e16164c4e Mon Sep 17 00:00:00 2001
From: Florian Fainelli <florian@openwrt.org>
Date: Mon, 12 Nov 2012 12:31:55 +0100
Subject: [PATCH] MIPS: decompressor: fix build failure on memcpy() in
decompress.c
The decompress.c file includes linux/kernel.h which causes the following
inclusion chain to be pulled:
linux/kernel.h ->
linux/dynamic_debug.h ->
linux/string.h ->
asm/string.h
We end up having a the GCC builtin + architecture specific memcpy() expanding
into this:
void *({ size_t __len = (size_t n); void *__ret; if
(__builtin_constant_p(size_t n) && __len >= 64) __ret = memcpy((void *dest),
(const void *src), __len); else __ret = __builtin_memcpy((void *dest), (const
void *src), __len); __ret; })
{
[memcpy implementation in decompress.c starts here]
int i;
const char *s = src;
char *d = dest;
for (i = 0; i < n; i++)
d[i] = s[i];
return dest;
}
raising the following compilation error:
arch/mips/boot/compressed/decompress.c:46:8: error: expected identifier or '('
before '{' token
There are at least three possibilities to fix this issue:
1) define _LINUX_STRING_H_ at the beginning of decompress.c to prevent
further linux/string.h definitions and declarations from being used, and add
an explicit strstr() declaration for linux/dynamic_debug.h
2) remove the inclusion of linux/kernel.h because we actually use no definition
or declaration from this header file
3) undefine memcpy or re-define memcpy to memcpy thus resulting in picking up
the local memcpy() implementation to this compilation unit
This patch uses the second option which is the less intrusive one.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
arch/mips/boot/compressed/decompress.c | 2 --
1 file changed, 2 deletions(-)
--- a/arch/mips/boot/compressed/decompress.c
+++ b/arch/mips/boot/compressed/decompress.c
@@ -12,7 +12,6 @@
*/
#include <linux/types.h>
-#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/addrspace.h>

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@ -0,0 +1,18 @@
--- a/arch/mips/boot/compressed/decompress.c
+++ b/arch/mips/boot/compressed/decompress.c
@@ -45,6 +45,7 @@ void error(char *x)
#define STATIC static
#ifdef CONFIG_KERNEL_GZIP
+#undef memcpy
void *memcpy(void *dest, const void *src, size_t n)
{
int i;
@@ -59,6 +60,7 @@ void *memcpy(void *dest, const void *src
#endif
#ifdef CONFIG_KERNEL_BZIP2
+#undef memset
void *memset(void *s, int c, size_t n)
{
int i;