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[RESEND] kexec: arm: Fix endianness in crashdump header

Message ID 1389610045-5372-1-git-send-email-kondratyuk.taras@gmail.com
State Accepted, archived
Headers show

Commit Message

Taras Kondratiuk Jan. 13, 2014, 10:47 a.m. UTC 
From: Taras Kondratiuk <taras.kondratiuk@linaro.org>

Currently little-endian ELFDATA is hard-coded in crashdump header.
This lead to a wrong header format if crashdump is generated on BE system.

Set native endianness into ELFDATA field.

Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
---
Based on commit 027413d "kexec: Add m68k support"

 kexec/arch/arm/crashdump-arm.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
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Patch

diff --git a/kexec/arch/arm/crashdump-arm.c b/kexec/arch/arm/crashdump-arm.c
index 01973b1..0cd6935 100644
--- a/kexec/arch/arm/crashdump-arm.c
+++ b/kexec/arch/arm/crashdump-arm.c
@@ -31,6 +31,13 @@ 
 #include "../../crashdump.h"
 #include "crashdump-arm.h"
 
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define ELFDATANATIVE ELFDATA2LSB
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define ELFDATANATIVE ELFDATA2MSB
+#else
+#error "Unknown machine endian"
+#endif
 
 /*
  * Used to save various memory ranges/regions needed for the captured
@@ -47,7 +54,7 @@  static struct memory_range crash_reserved_mem;
 
 static struct crash_elf_info elf_info = {
 	.class		= ELFCLASS32,
-	.data		= ELFDATA2LSB,
+	.data		= ELFDATANATIVE,
 	.machine	= EM_ARM,
 	.page_offset	= PAGE_OFFSET,
 };