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lib: create common ascii hex array

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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 <[email protected]>
Acked-by: Paul Mundt <[email protected]>
Cc: Jason Wessel <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Harvey Harrison 2008-05-14 16:05:49 -07:00 • committed by Linus Torvalds
commit 3fc957721d
5 changed files with 20 additions and 23 deletions
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7
lib/hexdump.c
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@ -12,6 +12,9 @@
#include <linux/kernel.h>
#include <linux/module.h>
const char hex_asc[] = "0123456789abcdef";
EXPORT_SYMBOL(hex_asc);
/**
* hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory
* @buf: data blob to dump
@ -93,8 +96,8 @@ void hex_dump_to_buffer(const void *buf, size_t len, int rowsize,
for (j = 0; (j < rowsize) && (j < len) && (lx + 4) < linebuflen;
j++) {
ch = ptr[j];
linebuf[lx++] = hex_asc(ch >> 4);
linebuf[lx++] = hex_asc(ch & 0x0f);
linebuf[lx++] = hex_asc_hi(ch);
linebuf[lx++] = hex_asc_lo(ch);
linebuf[lx++] = ' ';
}
ascii_column = 3 * rowsize + 2;