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lib: introduce upper case hex ascii helpers 

To be able to use the hex ascii functions in case sensitive environments
the array hex_asc_upper[] and the needed functions for hex_byte_pack_upper()
are introduced.

Signed-off-by: Andre Naujoks <nautsch2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Andre Naujoks 2013-09-13 19:37:12 +02:00 committed by David S. Miller
parent cc9fa74e2a
commit c26d436cbf
2 changed files with 13 additions and 0 deletions
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11
include/linux/kernel.h
View File

@ -439,6 +439,17 @@ static inline char *hex_byte_pack(char *buf, u8 byte)
return buf;
}
extern const char hex_asc_upper[];
#define hex_asc_upper_lo(x) hex_asc_upper[((x) & 0x0f)]
#define hex_asc_upper_hi(x) hex_asc_upper[((x) & 0xf0) >> 4]
static inline char *hex_byte_pack_upper(char *buf, u8 byte)
{
*buf++ = hex_asc_upper_hi(byte);
*buf++ = hex_asc_upper_lo(byte);
return buf;
}
static inline char * __deprecated pack_hex_byte(char *buf, u8 byte)
{
return hex_byte_pack(buf, byte);

2
lib/hexdump.c
View File

@ -14,6 +14,8 @@
const char hex_asc[] = "0123456789abcdef";
EXPORT_SYMBOL(hex_asc);
const char hex_asc_upper[] = "0123456789ABCDEF";
EXPORT_SYMBOL(hex_asc_upper);
/**
* hex_to_bin - convert a hex digit to its real value