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VMConfig.h
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VMConfig.h
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
namespace dev
{
namespace eth
{
///////////////////////////////////////////////////////////////////////////////
//
// interpreter configuration macros for development, optimizations and tracing
//
// EIP_615 - subroutines and static jumps
// EIP_616 - SIMD
//
// EVM_OPTIMIZE - all optimizations off when false (TO DO - MAKE DYNAMIC)
//
// EVM_SWITCH_DISPATCH - dispatch via loop and switch
// EVM_JUMP_DISPATCH - dispatch via a jump table - available only on GCC
//
// EVM_USE_CONSTANT_POOL - constants unpacked and ready to assign to stack
//
// EVM_REPLACE_CONST_JUMP - pre-verified jumps to save runtime lookup
//
// EVM_TRACE - provides various levels of tracing
#ifndef EIP_615
#define EIP_615 false
#endif
#ifndef EIP_616
#define EIP_616 false
#endif
#ifndef EVM_JUMP_DISPATCH
#ifdef __GNUC__
#define EVM_JUMP_DISPATCH true
#else
#define EVM_JUMP_DISPATCH false
#endif
#endif
#if EVM_JUMP_DISPATCH
#ifndef __GNUC__
#error "address of label extension available only on Gnu"
#endif
#else
#define EVM_SWITCH_DISPATCH true
#endif
#ifndef EVM_OPTIMIZE
#define EVM_OPTIMIZE false
#endif
#if EVM_OPTIMIZE
#define EVM_REPLACE_CONST_JUMP true
#define EVM_USE_CONSTANT_POOL true
#define EVM_DO_FIRST_PASS_OPTIMIZATION (EVM_REPLACE_CONST_JUMP || EVM_USE_CONSTANT_POOL)
#endif
///////////////////////////////////////////////////////////////////////////////
//
// set EVM_TRACE to 3, 2, 1, or 0 for lots to no tracing to cerr
//
#ifndef EVM_TRACE
#define EVM_TRACE 0
#endif
#if EVM_TRACE > 0
#undef ON_OP
#if EVM_TRACE > 2
#define ON_OP() \
(cerr << "### " << ++m_nSteps << ": " << m_PC << " " << instructionInfo(m_OP).name << endl)
#else
#define ON_OP() onOperation()
#endif
#define TRACE_STR(level, str) \
if ((level) <= EVM_TRACE) \
cerr << "$$$ " << (str) << endl;
#define TRACE_VAL(level, name, val) \
if ((level) <= EVM_TRACE) \
cerr << "=== " << (name) << " " << hex << (val) << endl;
#define TRACE_OP(level, pc, op) \
if ((level) <= EVM_TRACE) \
cerr << "*** " << (pc) << " " << instructionInfo(op).name << endl;
#define TRACE_PRE_OPT(level, pc, op) \
if ((level) <= EVM_TRACE) \
cerr << "<<< " << (pc) << " " << instructionInfo(op).name << endl;
#define TRACE_POST_OPT(level, pc, op) \
if ((level) <= EVM_TRACE) \
cerr << ">>> " << (pc) << " " << instructionInfo(op).name << endl;
#else
#define TRACE_STR(level, str)
#define TRACE_VAL(level, name, val)
#define TRACE_OP(level, pc, op)
#define TRACE_PRE_OPT(level, pc, op)
#define TRACE_POST_OPT(level, pc, op)
#define ON_OP() onOperation()
#endif
// Executive swallows exceptions in some circumstances
#if 0
#define THROW_EXCEPTION(X) ((cerr << "!!! EVM EXCEPTION " << (X).what() << endl), abort())
#else
#if EVM_TRACE > 0
#define THROW_EXCEPTION(X) \
((cerr << "!!! EVM EXCEPTION " << (X).what() << endl), BOOST_THROW_EXCEPTION(X))
#else
#define THROW_EXCEPTION(X) BOOST_THROW_EXCEPTION(X)
#endif
#endif
///////////////////////////////////////////////////////////////////////////////
//
// build a simple loop-and-switch interpreter
//
#if EVM_SWITCH_DISPATCH
#define INIT_CASES
#define DO_CASES \
for (;;) \
{ \
fetchInstruction(); \
switch (m_OP) \
{
#define CASE(name) case Instruction::name:
#define NEXT \
++m_PC; \
break;
#define CONTINUE continue;
#define BREAK return;
#define DEFAULT default:
#define WHILE_CASES \
} \
}
///////////////////////////////////////////////////////////////////////////////
//
// build an indirect-threaded interpreter using a jump table of
// label addresses (a gcc extension)
//
#elif EVM_JUMP_DISPATCH
#define INIT_CASES \
\
static const void* const jumpTable[256] = { \
&&STOP, /* 00 */ \
&&ADD, \
&&MUL, \
&&SUB, \
&&DIV, \
&&SDIV, \
&&MOD, \
&&SMOD, \
&&ADDMOD, \
&&MULMOD, \
&&EXP, \
&&SIGNEXTEND, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&<, /* 10, */ \
&>, \
&&SLT, \
&&SGT, \
&&EQ, \
&&ISZERO, \
&&AND, \
&&OR, \
&&XOR, \
&&NOT, \
&&BYTE, \
&&SHL, \
&&SHR, \
&&SAR, \
&&INVALID, \
&&INVALID, \
&&SHA3, /* 20, */ \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&ADDRESS, /* 30, */ \
&&BALANCE, \
&&ORIGIN, \
&&CALLER, \
&&CALLVALUE, \
&&CALLDATALOAD, \
&&CALLDATASIZE, \
&&CALLDATACOPY, \
&&CODESIZE, \
&&CODECOPY, \
&&GASPRICE, \
&&EXTCODESIZE, \
&&EXTCODECOPY, \
&&RETURNDATASIZE, \
&&RETURNDATACOPY, \
&&INVALID, \
&&BLOCKHASH, /* 40, */ \
&&COINBASE, \
&&TIMESTAMP, \
&&NUMBER, \
&&DIFFICULTY, \
&&GASLIMIT, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&POP, /* 50, */ \
&&MLOAD, \
&&MSTORE, \
&&MSTORE8, \
&&SLOAD, \
&&SSTORE, \
&&JUMP, \
&&JUMPI, \
&&PC, \
&&MSIZE, \
&&GAS, \
&&JUMPDEST, \
&&BEGINDATA, \
&&BEGINSUB, \
&&INVALID, \
&&INVALID, \
&&PUSH1, /* 60, */ \
&&PUSH2, \
&&PUSH3, \
&&PUSH4, \
&&PUSH5, \
&&PUSH6, \
&&PUSH7, \
&&PUSH8, \
&&PUSH9, \
&&PUSH10, \
&&PUSH11, \
&&PUSH12, \
&&PUSH13, \
&&PUSH14, \
&&PUSH15, \
&&PUSH16, \
&&PUSH17, /* 70, */ \
&&PUSH18, \
&&PUSH19, \
&&PUSH20, \
&&PUSH21, \
&&PUSH22, \
&&PUSH23, \
&&PUSH24, \
&&PUSH25, \
&&PUSH26, \
&&PUSH27, \
&&PUSH28, \
&&PUSH29, \
&&PUSH30, \
&&PUSH31, \
&&PUSH32, \
&&DUP1, /* 80, */ \
&&DUP2, \
&&DUP3, \
&&DUP4, \
&&DUP5, \
&&DUP6, \
&&DUP7, \
&&DUP8, \
&&DUP9, \
&&DUP10, \
&&DUP11, \
&&DUP12, \
&&DUP13, \
&&DUP14, \
&&DUP15, \
&&DUP16, \
&&SWAP1, /* 90, */ \
&&SWAP2, \
&&SWAP3, \
&&SWAP4, \
&&SWAP5, \
&&SWAP6, \
&&SWAP7, \
&&SWAP8, \
&&SWAP9, \
&&SWAP10, \
&&SWAP11, \
&&SWAP12, \
&&SWAP13, \
&&SWAP14, \
&&SWAP15, \
&&SWAP16, \
&&LOG0, /* A0, */ \
&&LOG1, \
&&LOG2, \
&&LOG3, \
&&LOG4, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&PUSHC, \
&&JUMPC, \
&&JUMPCI, \
&&INVALID, \
&&JUMPTO, /* B0, */ \
&&JUMPIF, \
&&JUMPSUB, \
&&JUMPV, \
&&JUMPSUBV, \
&&BEGINSUB, \
&&BEGINDATA, \
&&RETURNSUB, \
&&PUTLOCAL, \
&&GETLOCAL, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, /* C0, */ \
&&XADD, \
&&XMUL, \
&&XSUB, \
&&XDIV, \
&&XSDIV, \
&&XMOD, \
&&XSMOD, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&XLT, /* D0 */ \
&&XGT, \
&&XSLT, \
&&XSGT, \
&&XEQ, \
&&XISZERO, \
&&XAND, \
&&XOOR, \
&&XXOR, \
&&XNOT, \
&&INVALID, \
&&XSHL, \
&&XSHR, \
&&XSAR, \
&&XROL, \
&&XROR, \
&&XPUSH, /* E0, */ \
&&XMLOAD, \
&&XMSTORE, \
&&INVALID, \
&&XSLOAD, \
&&XSSTORE, \
&&XVTOWIDE, \
&&XWIDETOV, \
&&XGET, \
&&XPUT, \
&&XSWIZZLE, \
&&XSHUFFLE, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&CREATE, /* F0, */ \
&&CALL, \
&&CALLCODE, \
&&RETURN, \
&&DELEGATECALL, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&INVALID, \
&&STATICCALL, \
&&CREATE2, \
&&INVALID, \
&&REVERT, \
&&INVALID, \
&&SUICIDE, \
};
#define DO_CASES \
fetchInstruction(); \
goto* jumpTable[(int)m_OP];
#define CASE(name) \
name:
#define NEXT \
++m_PC; \
fetchInstruction(); \
goto* jumpTable[(int)m_OP];
#define CONTINUE \
fetchInstruction(); \
goto* jumpTable[(int)m_OP];
#define BREAK return;
#define DEFAULT
#define WHILE_CASES
#else
#error No opcode dispatch configured
#endif
}
}