diff options
| author | Harvey Harrison <harvey.harrison@gmail.com> | 2008-05-14 16:05:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-14 19:11:14 -0700 |
| commit | 3fc957721d18c93662f7d4dab455b80f53dd2641 (patch) | |
| tree | 9bdbabf3cb3678edcd0e0e4beb5deaa5c1b17bcd /include | |
| parent | 122a881c776b7c155bf3f379928cc27aab435288 (diff) | |
lib: create common ascii hex array
Add a common hex array in hexdump.c so everyone can use it.
Add a common hi/lo helper to avoid the shifting masking that is
done to get the upper and lower nibbles of a byte value.
Pull the pack_hex_byte helper from kgdb as it is opencoded many
places in the tree that will be consolidated.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kernel.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 4d46e299afb..792bf0aa779 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -276,7 +276,17 @@ extern void print_hex_dump(const char *level, const char *prefix_str, const void *buf, size_t len, bool ascii); extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, const void *buf, size_t len); -#define hex_asc(x) "0123456789abcdef"[x] + +extern const char hex_asc[]; +#define hex_asc_lo(x) hex_asc[((x) & 0x0f)] +#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] + +static inline char *pack_hex_byte(char *buf, u8 byte) +{ + *buf++ = hex_asc_hi(byte); + *buf++ = hex_asc_lo(byte); + return buf; +} #define pr_emerg(fmt, arg...) \ printk(KERN_EMERG fmt, ##arg) |