Trivial arithmetic can be used for emitting the nibbles,
rather than full-blown printf formatting.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
util/hexdump.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/util/hexdump.c b/util/hexdump.c
index b29326b7f2..ae0d4992dc 100644
--- a/util/hexdump.c
+++ b/util/hexdump.c
@@ -16,6 +16,11 @@
#include "qemu/osdep.h"
#include "qemu/cutils.h"
+static inline char hexdump_nibble(unsigned x)
+{
+ return (x < 10 ? '0' : 'a' - 10) + x;
+}
+
GString *qemu_hexdump_line(GString *str, const void *vbuf, size_t len,
size_t unit_len, size_t block_len)
{
@@ -35,6 +40,8 @@ GString *qemu_hexdump_line(GString *str, const void *vbuf, size_t len,
}
for (u = 0, b = 0; len; u++, b++, len--, buf++) {
+ uint8_t c;
+
if (unit_len && u == unit_len) {
g_string_append_c(str, ' ');
u = 0;
@@ -43,7 +50,10 @@ GString *qemu_hexdump_line(GString *str, const void *vbuf, size_t len,
g_string_append_c(str, ' ');
b = 0;
}
- g_string_append_printf(str, "%02x", *buf);
+
+ c = *buf;
+ g_string_append_c(str, hexdump_nibble(c / 16));
+ g_string_append_c(str, hexdump_nibble(c % 16));
}
return str;
--
2.34.1