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Make the value argument to "gen_ncmp()" a bpf_int32, the same as the 

value arguments are to other routines.  Do the same with the value
argument to "gen_atmfield_code()".

"gen_load_a()" can return more than one statement; append to the list of
statements it returns with "sappend()", rather than manually appending
to the first statement.

Fix the argument list to one "gen_ncmp()" call, and get rid of the casts
in the other calls, as the arguments already have the right types.

Fix the casts in calls to "gen_atmfield_code()".
This commit is contained in:
guy 2005-05-01 08:37:48 +00:00
parent 8b9f740d4c
commit 27cd2f8c65
3 changed files with 23 additions and 21 deletions
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32
gencode.c
View File

@ -21,7 +21,7 @@
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.11 2005-05-01 04:14:15 guy Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.12 2005-05-01 08:37:48 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -178,7 +178,7 @@ static struct block *gen_mcmp(enum e_offrel, u_int, u_int, bpf_int32,
bpf_u_int32);
static struct block *gen_bcmp(enum e_offrel, u_int, u_int, const u_char *);
static struct block *gen_ncmp(enum e_offrel, bpf_u_int32, bpf_u_int32,
bpf_u_int32, bpf_u_int32, int, bpf_u_int32);
bpf_u_int32, bpf_u_int32, int, bpf_int32);
static struct slist *gen_load_a(enum e_offrel, u_int, u_int);
static struct block *gen_uncond(int);
static inline struct block *gen_true(void);
@ -608,17 +608,19 @@ gen_bcmp(offrel, offset, size, v)
static struct block *
gen_ncmp(offrel, offset, size, mask, jtype, reverse, v)
enum e_offrel offrel;
bpf_u_int32 offset, size, mask, jtype, v;
bpf_int32 v;
bpf_u_int32 offset, size, mask, jtype;
int reverse;
{
struct slist *s;
struct slist *s, *s2;
struct block *b;
s = gen_load_a(offrel, offset, size);
if (mask != 0xffffffff) {
s->next = new_stmt(BPF_ALU|BPF_AND|BPF_K);
s->next->s.k = mask;
s2 = new_stmt(BPF_ALU|BPF_AND|BPF_K);
s2->s.k = mask;
sappend(s, s2);
}
b = new_block(JMP(jtype));
@ -5812,7 +5814,7 @@ gen_mpls(label_num)
struct block *
gen_atmfield_code(atmfield, jvalue, jtype, reverse)
int atmfield;
bpf_u_int32 jvalue;
bpf_int32 jvalue;
bpf_u_int32 jtype;
int reverse;
{
@ -5825,8 +5827,8 @@ gen_atmfield_code(atmfield, jvalue, jtype, reverse)
bpf_error("'vpi' supported only on raw ATM");
if (off_vpi == (u_int)-1)
abort();
b0 = gen_ncmp(OR_LINK, off_vpi, BPF_B, 0xffffffff, (u_int)jtype,
(u_int)jvalue, reverse);
b0 = gen_ncmp(OR_LINK, off_vpi, BPF_B, 0xffffffff, jtype,
reverse, jvalue);
break;
case A_VCI:
@ -5834,22 +5836,22 @@ gen_atmfield_code(atmfield, jvalue, jtype, reverse)
bpf_error("'vci' supported only on raw ATM");
if (off_vci == (u_int)-1)
abort();
b0 = gen_ncmp(OR_LINK, off_vci, BPF_H, 0xffffffff, (u_int)jtype,
reverse, (u_int)jvalue);
b0 = gen_ncmp(OR_LINK, off_vci, BPF_H, 0xffffffff, jtype,
reverse, jvalue);
break;
case A_PROTOTYPE:
if (off_proto == (u_int)-1)
abort(); /* XXX - this isn't on FreeBSD */
b0 = gen_ncmp(OR_LINK, off_proto, BPF_B, 0x0f, (u_int)jtype,
reverse, (u_int)jvalue);
b0 = gen_ncmp(OR_LINK, off_proto, BPF_B, 0x0f, jtype,
reverse, jvalue);
break;
case A_MSGTYPE:
if (off_payload == (u_int)-1)
abort();
b0 = gen_ncmp(OR_LINK, off_payload + MSG_TYPE_POS, BPF_B,
0xffffffff, (u_int)jtype, reverse, (u_int)jvalue);
0xffffffff, jtype, reverse, jvalue);
break;
case A_CALLREFTYPE:
@ -5858,7 +5860,7 @@ gen_atmfield_code(atmfield, jvalue, jtype, reverse)
if (off_proto == (u_int)-1)
abort();
b0 = gen_ncmp(OR_LINK, off_proto, BPF_B, 0xffffffff,
(u_int)jtype, reverse, (u_int)jvalue);
jtype, reverse, jvalue);
break;
default:

4
gencode.h
View File

@ -18,7 +18,7 @@
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* @(#) $Header: /tcpdump/master/libpcap/gencode.h,v 1.60.2.2 2005-04-23 22:27:38 guy Exp $ (LBL)
* @(#) $Header: /tcpdump/master/libpcap/gencode.h,v 1.60.2.3 2005-05-01 08:37:50 guy Exp $ (LBL)
*/
/*
@ -280,7 +280,7 @@ struct block *gen_inbound(int);
struct block *gen_vlan(int);
struct block *gen_mpls(int);
struct block *gen_atmfield_code(int atmfield, bpf_u_int32 jvalue, bpf_u_int32 jtype, int reverse);
struct block *gen_atmfield_code(int atmfield, bpf_int32 jvalue, bpf_u_int32 jtype, int reverse);
struct block *gen_atmtype_abbrev(int type);
struct block *gen_atmmulti_abbrev(int type);

8
grammar.y
View File

@ -22,7 +22,7 @@
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/grammar.y,v 1.86.2.1 2005-04-19 04:26:08 guy Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/libpcap/grammar.y,v 1.86.2.2 2005-05-01 08:37:50 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -414,15 +414,15 @@ atmfield: VPI { $$.atmfieldtype = A_VPI; }
| VCI { $$.atmfieldtype = A_VCI; }
;
atmvalue: atmfieldvalue
| relop NUM { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (u_int)$2, (u_int)$1, 0); }
| irelop NUM { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (u_int)$2, (u_int)$1, 1); }
| relop NUM { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 0); }
| irelop NUM { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 1); }
| paren atmlistvalue ')' { $$.b = $2.b; $$.q = qerr; }
;
atmfieldvalue: NUM {
$$.atmfieldtype = $<blk>0.atmfieldtype;
if ($$.atmfieldtype == A_VPI ||
$$.atmfieldtype == A_VCI)
$$.b = gen_atmfield_code($$.atmfieldtype, (u_int) $1, BPF_JEQ, 0);
$$.b = gen_atmfield_code($$.atmfieldtype, (bpf_int32) $1, BPF_JEQ, 0);
}
;
atmlistvalue: atmfieldvalue