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/*
* ClamAV bytecode definitions.
*
* Copyright (C) 2015 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
* Copyright (C) 2009-2010 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
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