* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+#ifndef gencode_h
+#define gencode_h
+
+#include "pcap/funcattrs.h"
+#include "pcap/bpf.h" /* bpf_u_int32 and BPF_MEMWORDS */
+
/*
* ATM support:
*
* POSSIBILITY OF SUCH DAMAGE.
*/
-#ifndef HAVE___ATTRIBUTE__
-#define __attribute__(x)
-#endif /* HAVE___ATTRIBUTE__ */
-
/* Address qualifiers. */
#define Q_HOST 1
#define Q_ISIS_L2 32
/* PDU types */
#define Q_ISIS_IIH 33
-#define Q_ISIS_LAN_IIH 34
-#define Q_ISIS_PTP_IIH 35
-#define Q_ISIS_SNP 36
-#define Q_ISIS_CSNP 37
-#define Q_ISIS_PSNP 38
-#define Q_ISIS_LSP 39
+#define Q_ISIS_SNP 34
+#define Q_ISIS_CSNP 35
+#define Q_ISIS_PSNP 36
+#define Q_ISIS_LSP 37
-#define Q_RADIO 40
+#define Q_RADIO 38
-#define Q_CARP 41
+#define Q_CARP 39
/* Directional qualifiers. */
struct slist;
+/*
+ * A single statement, corresponding to an instruction in a block.
+ */
struct stmt {
- int code;
- struct slist *jt; /*only for relative jump in block*/
- struct slist *jf; /*only for relative jump in block*/
- bpf_int32 k;
+ int code; /* opcode */
+ struct slist *jt; /* only for relative jump in block */
+ struct slist *jf; /* only for relative jump in block */
+ bpf_u_int32 k; /* k field */
};
struct slist {
*/
#define N_ATOMS (BPF_MEMWORDS+2)
+/*
+ * Control flow graph of a program.
+ * This corresponds to an edge in the CFG.
+ * It's a directed graph, so an edge has a predecessor and a successor.
+ */
struct edge {
- int id;
- int code;
+ u_int id;
+ int code; /* opcode for branch corresponding to this edge */
uset edom;
- struct block *succ;
- struct block *pred;
+ struct block *succ; /* successor vertex */
+ struct block *pred; /* predecessor vertex */
struct edge *next; /* link list of incoming edges for a node */
};
+/*
+ * A block is a vertex in the CFG.
+ * It has a list of statements, with the final statement being a
+ * branch to successor blocks.
+ */
struct block {
- int id;
+ u_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 edge et; /* edge corresponding to the jt branch */
+ struct edge ef; /* edge corresponding to the jf branch */
struct block *head;
struct block *link; /* link field used by optimizer */
uset dom;
uset closure;
- struct edge *in_edges;
+ struct edge *in_edges; /* first edge in the set (linked list) of edges with this as a successor */
atomset def, kill;
atomset in_use;
atomset out_use;
- int oval;
- int val[N_ATOMS];
+ int oval; /* value ID for value tested in branch stmt */
+ bpf_u_int32 val[N_ATOMS];
};
+/*
+ * A value of 0 for val[i] means the value is unknown.
+ */
+#define VAL_UNKNOWN 0
+
struct arth {
struct block *b; /* protocol checks */
struct slist *s; /* stmt list */
typedef struct _compiler_state compiler_state_t;
-struct arth *gen_loadi(compiler_state_t *, int);
-struct arth *gen_load(compiler_state_t *, int, struct arth *, int);
+struct arth *gen_loadi(compiler_state_t *, bpf_u_int32);
+struct arth *gen_load(compiler_state_t *, int, struct arth *, bpf_u_int32);
struct arth *gen_loadlen(compiler_state_t *);
struct arth *gen_neg(compiler_state_t *, struct arth *);
struct arth *gen_arth(compiler_state_t *, int, struct arth *, struct arth *);
void gen_not(struct block *);
struct block *gen_scode(compiler_state_t *, const char *, struct qual);
-struct block *gen_ecode(compiler_state_t *, const u_char *, struct qual);
-struct block *gen_acode(compiler_state_t *, const u_char *, struct qual);
+struct block *gen_ecode(compiler_state_t *, const char *, struct qual);
+struct block *gen_acode(compiler_state_t *, const char *, struct qual);
struct block *gen_mcode(compiler_state_t *, const char *, const char *,
- unsigned int, struct qual);
+ bpf_u_int32, struct qual);
#ifdef INET6
struct block *gen_mcode6(compiler_state_t *, const char *, const char *,
- unsigned int, struct qual);
+ bpf_u_int32, struct qual);
#endif
struct block *gen_ncode(compiler_state_t *, const char *, bpf_u_int32,
struct qual);
struct arth *, int);
struct block *gen_less(compiler_state_t *, int);
struct block *gen_greater(compiler_state_t *, int);
-struct block *gen_byteop(compiler_state_t *, int, int, int);
+struct block *gen_byteop(compiler_state_t *, int, int, bpf_u_int32);
struct block *gen_broadcast(compiler_state_t *, int);
struct block *gen_multicast(compiler_state_t *, int);
+struct block *gen_ifindex(compiler_state_t *, int);
struct block *gen_inbound(compiler_state_t *, int);
struct block *gen_llc(compiler_state_t *);
struct block *gen_llc_s_subtype(compiler_state_t *, bpf_u_int32);
struct block *gen_llc_u_subtype(compiler_state_t *, bpf_u_int32);
-struct block *gen_vlan(compiler_state_t *, int);
-struct block *gen_mpls(compiler_state_t *, int);
+struct block *gen_vlan(compiler_state_t *, bpf_u_int32, int);
+struct block *gen_mpls(compiler_state_t *, bpf_u_int32, int);
struct block *gen_pppoed(compiler_state_t *);
-struct block *gen_pppoes(compiler_state_t *, int);
+struct block *gen_pppoes(compiler_state_t *, bpf_u_int32, int);
-struct block *gen_geneve(compiler_state_t *, int);
+struct block *gen_geneve(compiler_state_t *, bpf_u_int32, int);
-struct block *gen_atmfield_code(compiler_state_t *, int, bpf_int32,
- bpf_u_int32, int);
-struct block *gen_atmtype_abbrev(compiler_state_t *, int type);
-struct block *gen_atmmulti_abbrev(compiler_state_t *, int type);
+struct block *gen_atmfield_code(compiler_state_t *, int, bpf_u_int32,
+ int, int);
+struct block *gen_atmtype_abbrev(compiler_state_t *, int);
+struct block *gen_atmmulti_abbrev(compiler_state_t *, int);
-struct block *gen_mtp2type_abbrev(compiler_state_t *, int type);
+struct block *gen_mtp2type_abbrev(compiler_state_t *, int);
struct block *gen_mtp3field_code(compiler_state_t *, int, bpf_u_int32,
- bpf_u_int32, int);
+ int, int);
struct block *gen_pf_ifname(compiler_state_t *, const char *);
struct block *gen_pf_rnr(compiler_state_t *, int);
struct block *gen_pf_reason(compiler_state_t *, int);
struct block *gen_pf_action(compiler_state_t *, int);
-struct block *gen_p80211_type(compiler_state_t *, int, int);
-struct block *gen_p80211_fcdir(compiler_state_t *, int);
+struct block *gen_p80211_type(compiler_state_t *, bpf_u_int32, bpf_u_int32);
+struct block *gen_p80211_fcdir(compiler_state_t *, bpf_u_int32);
/*
* Representation of a program as a tree of blocks, plus current mark.
int cur_mark;
};
-void bpf_optimize(compiler_state_t *, struct icode *ic);
-void bpf_syntax_error(compiler_state_t *, const char *);
-void bpf_error(compiler_state_t *, const char *, ...)
- __attribute__((noreturn))
-#ifdef __ATTRIBUTE___FORMAT_OK
- __attribute__((format (printf, 2, 3)))
-#endif /* __ATTRIBUTE___FORMAT_OK */
- ;
+int bpf_optimize(struct icode *, char *);
+void bpf_set_error(compiler_state_t *, const char *, ...)
+ PCAP_PRINTFLIKE(2, 3);
-void finish_parse(compiler_state_t *, struct block *);
+int finish_parse(compiler_state_t *, struct block *);
char *sdup(compiler_state_t *, const char *);
-struct _opt_state;
-typedef struct _opt_state opt_state_t;
-
-struct bpf_insn *icode_to_fcode(compiler_state_t *, struct icode *,
- struct block *, u_int *);
+struct bpf_insn *icode_to_fcode(struct icode *, struct block *, u_int *,
+ char *);
void sappend(struct slist *, struct slist *);
/*
/* XXX */
#define JT(b) ((b)->et.succ)
#define JF(b) ((b)->ef.succ)
+
+#endif /* gencode_h */
projects / libpcap / blobdiff