util/nvmutil: nicer hexdump display

make it look like hexdump -C, where individual bytes are
spaced, and there is an additional space after 8 bytes,
per row.

i won't bother with a character display, since that is
meaningless on gbe nvm words.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index 6c4ebcd6..33cea8e6 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -219,10 +219,12 @@ void
 hexdump(int partnum)
 {
 	for (int row = 0; row < 8; row++) {
-		printf("%07x", row << 4);
+		printf("%08x ", row << 4);
 		for (int c = 0; c < 8; c++) {
 			uint16_t val16 = word((row << 3) + c, partnum);
-			printf(" %02x%02x", val16 & 0xff, val16 >> 8);
+			if (c == 4)
+				printf(" ");
+			printf(" %02x %02x", val16 & 0xff, val16 >> 8);
 		} printf("\n");
 	}
 }