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authorHung-Te Lin <hungte@chromium.org>2013-01-28 15:53:34 +0800
committerHung-Te Lin <hungte@chromium.org>2013-02-01 06:50:17 +0100
commit332795cc5951c6d65badd2bbf3c79f6b63dbdbc2 (patch)
treeb6e6d44b49e53b2cf1c99fb80db5e6b20043c340 /util/cbfstool/common.c
parentd723c5b554786794217a92acb4ce0096bf924da8 (diff)
downloadcoreboot-332795cc5951c6d65badd2bbf3c79f6b63dbdbc2.tar.xz
cbfstool: Make endian detection functions to work without prior setup.
The 'host_bigendian' variable (and functions relying on it like ntohl/htonl) requires host detection by calling static which_endian() first -- which may be easily forgotten by developers. It's now a public function in common.c and doesn't need initialization anymore. Change-Id: I13dabd1ad15d2d6657137d29138e0878040cb205 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2199 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'util/cbfstool/common.c')
-rw-r--r--util/cbfstool/common.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c
index 3394b7b536..d4560f691f 100644
--- a/util/cbfstool/common.c
+++ b/util/cbfstool/common.c
@@ -27,6 +27,19 @@
#include "cbfs.h"
#include "elf.h"
+/* Utilities */
+
+/* Small, OS/libc independent runtime check for endianess */
+int is_big_endian(void)
+{
+ static const uint32_t inttest = 0x12345678;
+ uint8_t inttest_lsb = *(uint8_t *)&inttest;
+ if (inttest_lsb == 0x12) {
+ return 1;
+ }
+ return 0;
+}
+
size_t getfilesize(const char *filename)
{
size_t size;