From NetBSD: merge of 960317

1 files changed, 168 insertions, 0 deletions

diff --git a/usr.sbin/pppd/gencode.h b/usr.sbin/pppd/gencode.h
new file mode 100644
index 00000000000..9b3b99cad19
--- /dev/null
+++ b/usr.sbin/pppd/gencode.h
@@ -0,0 +1,168 @@
+/*	$OpenBSD: gencode.h,v 1.1 1996/03/25 15:55:41 niklas Exp $	*/
+/*	$NetBSD: gencode.h,v 1.1 1996/03/15 03:09:12 paulus Exp $	*/
+
+/*
+ * Copyright (c) 1990, 1991, 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * @(#) Header: gencode.h,v 1.20 94/06/12 14:29:30 leres Exp (LBL)
+ */
+
+/*
+ * filter.h must be included before this file.
+ */
+
+/* Address qualifers. */
+
+#define Q_HOST		1
+#define Q_NET		2
+#define Q_PORT		3
+#define Q_PROTO		4
+
+/* Protocol qualifiers. */
+
+#define Q_LINK		1
+#define Q_IP		2
+#define Q_TCP		3
+#define Q_UDP		4
+#define Q_ICMP		5
+
+/* Directional qualifers. */
+
+#define Q_SRC		1
+#define Q_DST		2
+#define Q_OR		3
+#define Q_AND		4
+
+#define Q_DEFAULT	0
+#define Q_UNDEF		255
+
+struct stmt {
+	int code;
+	long k;
+};
+
+struct slist {
+	struct stmt s;
+	struct slist *next;
+};
+
+/* 
+ * A bit vector to represent definition sets.  We assume TOT_REGISTERS
+ * is smaller than 8*sizeof(atomset).
+ */
+typedef unsigned long atomset;
+#define ATOMMASK(n) (1 << (n))
+#define ATOMELEM(d, n) (d & ATOMMASK(n))
+
+/*
+ * An unbounded set.
+ */
+typedef unsigned long *uset;
+
+/*
+ * Total number of atomic entities, including accumulator (A) and index (X).
+ * We treat all these guys similarly during flow analysis.
+ */
+#define N_ATOMS (BPF_MEMWORDS+2)
+
+struct edge {
+	int id;
+	int code;
+	uset edom;
+	struct block *succ;
+	struct block *pred;
+	struct edge *next;	/* link list of incoming edges for a node */
+};
+
+struct block {
+	int id;
+	struct slist *stmts;	/* side effect stmts */
+	struct stmt s;		/* branch stmt */
+	int mark;
+	int level;
+	int offset;
+	int sense;
+	struct edge et;
+	struct edge ef;
+	struct block *head;
+	struct block *link;	/* link field used by optimizer */
+	uset dom;
+	uset closure;
+	struct edge *in_edges;
+	atomset def, kill;
+	atomset in_use;
+	atomset out_use;
+	long oval;
+	long val[N_ATOMS];
+};
+
+struct arth {
+	struct block *b;	/* protocol checks */
+	struct slist *s;	/* stmt list */
+	int regno;		/* virtual register number of result */
+};
+
+struct qual {
+	unsigned char addr;
+	unsigned char proto;
+	unsigned char dir;
+	unsigned char pad;
+};
+
+#ifndef __GNUC__
+#define volatile
+#endif
+
+struct arth *gen_loadi __P((int));
+struct arth *gen_load __P((int, struct arth *, int));
+struct arth *gen_loadlen __P((void));
+struct arth *gen_neg __P((struct arth *));
+struct arth *gen_arth __P((int, struct arth *, struct arth *));
+
+void gen_and __P((struct block *, struct block *));
+void gen_or __P((struct block *, struct block *));
+void gen_not __P((struct block *));
+
+struct block *gen_scode __P((char *, struct qual));
+struct block *gen_ecode __P((unsigned char *, struct qual));
+struct block *gen_ncode __P((unsigned long, struct qual));
+struct block *gen_proto_abbrev __P((int));
+struct block *gen_relation __P((int, struct arth *, struct arth *, int));
+struct block *gen_less __P((int));
+struct block *gen_greater __P((int));
+struct block *gen_byteop __P((int, int, int));
+struct block *gen_broadcast __P((int));
+struct block *gen_multicast __P((int));
+struct block *gen_inbound __P((int));
+
+void bpf_optimize __P((struct block **));
+volatile void bpf_error __P((char *, ...));
+
+void finish_parse __P((struct block *));
+char *sdup __P((char *));
+
+struct bpf_insn *icode_to_fcode __P((struct block *, int *));
+int pcap_parse __P((void));
+void lex_init __P((char *));
+void sappend __P((struct slist *, struct slist *));
+
+/* XXX */
+#define JT(b)  ((b)->et.succ)
+#define JF(b)  ((b)->ef.succ)