Import sources from 2011-03-30 iso image

1 files changed, 56 insertions, 0 deletions

diff --git a/sys/src/cmd/8c/bound.h b/sys/src/cmd/8c/bound.h
new file mode 100755
index 000000000..796032d62
--- /dev/null
+++ b/sys/src/cmd/8c/bound.h
@@ -0,0 +1,56 @@
+/*
+ *	Bounding Box stuff (brucee 04/03/30).
+ */
+
+#include <mp.h>
+#include <libsec.h>
+
+typedef	struct	BB	BB;
+typedef	struct	BBset	BBset;
+typedef uchar		Hval[SHA1dlen];
+
+#define	BBEQ(a, b)		(memcmp((a), (b), SHA1dlen) == 0)
+#define	BBMKHASH(b, n, h)	sha1((uchar *)(b), (n), (h), nil)
+#define	BBCP(d, s)		memmove(d, s, SHA1dlen)
+
+enum
+{
+	Bpre	= 1 << 0,	/* has a flow in */
+	Bjo	= 1 << 1,	/* a jump only */
+	Bbig	= 1 << 2,	/* too big */
+	Bdel	= 1 << 3,	/* deleted or not of interest */
+	Bpin	= 1 << 4,	/* pinned by embedded labels */
+
+	BBHASH	= 64,		/* power of 2 <= 256 */
+	BBMASK	= BBHASH - 1,
+
+	BBINIT	= 128,
+	BBBIG	= 64,
+	BBBSIZE	= 8192,
+	BINST	= 128,
+
+	COSTHI	= 0x7F,
+	COSTJO	= 0xFF,
+};
+
+struct	BB
+{
+	Reg*	first;
+	Reg*	last;
+	BBset*	set;
+	BB*	link;
+	BB*	aux;
+	short	flags;
+	short	len;
+};
+
+struct	BBset
+{
+	Hval	hash;
+	BB*	ents;
+	BBset*	next;
+	BBset*	link;
+	short	index;
+	uchar	damage;
+	uchar	recalc;
+};