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/*
* Load, verify and execute ClamAV bytecode.
*
* Copyright (C) 2009 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 BYTECODE_PRIV_H
#define BYTECODE_PRIV_H |
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#include "type_desc.h" |
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#include "execs.h"
#include "bytecode_hooks.h" |
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typedef uint32_t operand_t;
typedef uint16_t bbid_t;
typedef uint16_t funcid_t;
struct cli_bc_callop {
operand_t* ops; |
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uint16_t* opsizes; |
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uint8_t numOps;
funcid_t funcid;
};
struct branch {
operand_t condition;
bbid_t br_true;
bbid_t br_false;
};
struct cli_bc_cast {
uint64_t mask; |
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operand_t source;
uint8_t size;/* 0: 1-bit, 1: 8b, 2: 16b, 3: 32b, 4: 64b */ |
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}; |
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typedef uint8_t interp_op_t; |
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struct cli_bc_inst {
enum bc_opcode opcode;
uint16_t type; |
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interp_op_t interp_op;/* opcode for interpreter */ |
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operand_t dest; |
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union {
operand_t unaryop;
struct cli_bc_cast cast;
operand_t binop[2];
operand_t three[3];
struct cli_bc_callop ops;
struct branch branch;
bbid_t jump;
} u;
};
struct cli_bc_bb {
unsigned numInsts;
struct cli_bc_inst *insts;
};
struct cli_bc_func {
uint8_t numArgs;
uint16_t numLocals;
uint32_t numInsts; |
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uint32_t numValues;/* without constants */ |
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uint32_t numConstants; |
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uint32_t numBytes;/* stack size */ |
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uint16_t numBB; |
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uint16_t returnType; |
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uint16_t *types;
uint32_t insn_idx;
struct cli_bc_bb *BB;
struct cli_bc_inst *allinsts; |
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uint64_t *constants; |
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}; |
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#define MAX_OP ~0u |
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struct cli_bc_ctx {
/* id and params of toplevel function called */ |
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const struct cli_bc *bc;
const struct cli_bc_func *func; |
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unsigned bytes;
uint16_t *opsizes;
char *values; |
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operand_t *operands;
uint16_t funcid;
unsigned numParams; |
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size_t file_size;
off_t off;
int fd; |
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const char *virname; |
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struct cli_bc_hooks hooks; |
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}; |
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struct cli_all_bc; |
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int cli_vm_execute(const struct cli_bc *bc, struct cli_bc_ctx *ctx, const struct cli_bc_func *func, const struct cli_bc_inst *inst); |
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#ifdef __cplusplus
extern "C" {
#endif
|
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int cli_vm_execute_jit(const struct cli_all_bc *bcs, struct cli_bc_ctx *ctx, const struct cli_bc_func *func); |
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int cli_bytecode_prepare_jit(struct cli_all_bc *bc);
int cli_bytecode_init_jit(struct cli_all_bc *bc);
int cli_bytecode_done_jit(struct cli_all_bc *bc);
#ifdef __cplusplus
}
#endif |
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#endif |