135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/*
|
|
* ClamAV bytecode definitions.
|
|
*
|
|
* Copyright (C) 2013-2022 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
|
|
* Copyright (C) 2009-2013 Sourcefire, Inc.
|
|
*
|
|
* Authors: Török Edvin
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
#ifndef CLAMBC_H
|
|
#define CLAMBC_H
|
|
|
|
struct bytecode_metadata {
|
|
char *compiler;
|
|
char *sigmaker;
|
|
uint64_t timestamp;
|
|
unsigned formatlevel;
|
|
unsigned minfunc, maxfunc;
|
|
unsigned maxresource; /* reserved */
|
|
unsigned targetExclude;
|
|
};
|
|
|
|
#define BC_FORMAT_096 6
|
|
#define BC_FORMAT_LEVEL 7
|
|
#define BC_HEADER "ClamBC"
|
|
|
|
enum bc_opcode {
|
|
OP_BC_ADD = 1,
|
|
OP_BC_SUB,
|
|
OP_BC_MUL,
|
|
OP_BC_UDIV,
|
|
OP_BC_SDIV,
|
|
OP_BC_UREM,
|
|
OP_BC_SREM,
|
|
OP_BC_SHL,
|
|
OP_BC_LSHR,
|
|
OP_BC_ASHR,
|
|
OP_BC_AND,
|
|
OP_BC_OR,
|
|
OP_BC_XOR,
|
|
|
|
OP_BC_TRUNC,
|
|
OP_BC_SEXT,
|
|
OP_BC_ZEXT,
|
|
|
|
OP_BC_BRANCH,
|
|
OP_BC_JMP,
|
|
OP_BC_RET,
|
|
OP_BC_RET_VOID,
|
|
|
|
OP_BC_ICMP_EQ,
|
|
OP_BC_ICMP_NE,
|
|
OP_BC_ICMP_UGT,
|
|
OP_BC_ICMP_UGE,
|
|
OP_BC_ICMP_ULT,
|
|
OP_BC_ICMP_ULE,
|
|
OP_BC_ICMP_SGT,
|
|
OP_BC_ICMP_SGE,
|
|
OP_BC_ICMP_SLE,
|
|
OP_BC_ICMP_SLT,
|
|
OP_BC_SELECT,
|
|
OP_BC_CALL_DIRECT,
|
|
OP_BC_CALL_API,
|
|
OP_BC_COPY,
|
|
OP_BC_GEP1,
|
|
OP_BC_GEPZ,
|
|
OP_BC_GEPN,
|
|
OP_BC_STORE,
|
|
OP_BC_LOAD,
|
|
OP_BC_MEMSET,
|
|
OP_BC_MEMCPY,
|
|
OP_BC_MEMMOVE,
|
|
OP_BC_MEMCMP,
|
|
OP_BC_ISBIGENDIAN,
|
|
OP_BC_ABORT,
|
|
OP_BC_BSWAP16,
|
|
OP_BC_BSWAP32,
|
|
OP_BC_BSWAP64,
|
|
OP_BC_PTRDIFF32,
|
|
OP_BC_PTRTOINT64,
|
|
OP_BC_INVALID /* last */
|
|
};
|
|
|
|
static const unsigned char operand_counts[] = {
|
|
0,
|
|
/* ADD -> XOR */
|
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
|
/* TRUNC -> ZEXT */
|
|
1, 1, 1,
|
|
/* BRANCH, JMP, RET */
|
|
3, 1, 1, 0,
|
|
/* ICMP */
|
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
|
/* SELECT */
|
|
3,
|
|
/* CALLs have variable number of operands */
|
|
0, 0,
|
|
/* OP_BC_COPY */
|
|
2,
|
|
/* OP_BC_GEP1, OP_BC_GEPZ, OP_BC_GEPN, OP_BC_STORE, OP_BC_LOAD*/
|
|
3, 3, 0, 2, 1,
|
|
/* OP_MEM* */
|
|
3, 3, 3, 3,
|
|
/* OP_BC_ISBIGENDIAN */
|
|
0,
|
|
/* OP_BC_ABORT, OP_BSWAP*, OP_PTRDIFF32, OP_PTRINT64 */
|
|
0, 1, 1, 1, 2, 1};
|
|
|
|
enum bc_global {
|
|
_FIRST_GLOBAL = 0x8000,
|
|
GLOBAL_MATCH_COUNTS = 0x8000,
|
|
GLOBAL_KIND,
|
|
GLOBAL_VIRUSNAMES,
|
|
GLOBAL_PEDATA,
|
|
GLOBAL_FILESIZE,
|
|
GLOBAL_MATCH_OFFSETS,
|
|
_LAST_GLOBAL
|
|
};
|
|
|
|
#define BC_START_TID 69
|
|
#endif
|