Re-arrange and consolidate some random debugging stuff

1 files changed, 53 insertions, 0 deletions

diff --git a/sys/kern/subr_prf.c b/sys/kern/subr_prf.c
index d851e60..7c44341 100644
--- a/sys/kern/subr_prf.c
+++ b/sys/kern/subr_prf.c
@@ -898,3 +898,56 @@ DB_SHOW_COMMAND(msgbuf, db_show_msgbuf)
 }
 
 #endif /* DDB */
+
+void
+hexdump(void *ptr, int length, const char *hdr, int flags)
+{
+	int i, j, k;
+	int cols;
+	unsigned char *cp;
+	char delim;
+
+	if ((flags & HD_DELIM_MASK) != 0)
+		delim = (flags & HD_DELIM_MASK) >> 8;
+	else
+		delim = ' ';
+
+	if ((flags & HD_COLUMN_MASK) != 0)
+		cols = flags & HD_COLUMN_MASK;
+	else
+		cols = 16;
+
+	cp = ptr;
+	for (i = 0; i < length; i+= cols) {
+		if (hdr != NULL)
+			printf("%s", hdr);
+
+		if ((flags & HD_OMIT_COUNT) == 0)
+			printf("%04x  ", i);
+
+		if ((flags & HD_OMIT_HEX) == 0) {
+			for (j = 0; j < cols; j++) {
+				k = i + j;
+				if (k < length)
+					printf("%c%02x", delim, cp[k]);
+				else
+					printf("   ");
+			}
+		}
+
+		if ((flags & HD_OMIT_CHARS) == 0) {
+			printf("  |");
+			for (j = 0; j < cols; j++) {
+				k = i + j;
+				if (k >= length)
+					printf(" ");
+				else if (cp[k] >= ' ' && cp[k] <= '~')
+					printf("%c", cp[k]);
+				else
+					printf(".");
+			}
+			printf("|\n");
+		}
+	}
+}
+