add bcd<-->bin conversions; from freebsd

1 files changed, 37 insertions, 0 deletions

diff --git a/sys/lib/libkern/bcd.c b/sys/lib/libkern/bcd.c
new file mode 100644
index 00000000000..f3f119c19bd
--- /dev/null
+++ b/sys/lib/libkern/bcd.c
@@ -0,0 +1,37 @@
+/*
+ * Some data-tables that are often used.
+ * Cannot be copyrighted.
+ * from FreeBSD
+ */
+
+#include <lib/libkern/libkern.h>
+
+u_int8_t const __bcd2bin[] = {
+	 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 0, 0, 0, 0, 0, 0,
+	10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 0, 0, 0, 0, 0, 0,
+	20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 0, 0, 0, 0, 0, 0,
+	30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 0, 0, 0, 0, 0, 0,
+	40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 0, 0, 0, 0, 0, 0,
+	50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 0, 0, 0, 0, 0, 0,
+	60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 0, 0, 0, 0, 0, 0,
+	70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 0, 0, 0, 0, 0, 0,
+	80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 0, 0, 0, 0, 0, 0,
+	90, 91, 92, 93, 94, 95, 96, 97, 98, 99
+};
+
+u_int8_t const __bin2bcd[] = {
+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
+	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
+	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
+	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
+	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
+	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99
+};
+
+/* This is actually used with radix [2..36] */
+char const __hex2ascii[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+