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Asm output

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This commit is contained in:
Marenz 2022-10-04 01:14:00 +02:00
parent 0f08a06046
commit b44b9285e4
13 changed files with 739 additions and 456 deletions
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50
libevmasm/Assembly.cpp
View File

@ -426,7 +426,7 @@ map<u256, u256> const& Assembly::optimiseInternal(
AssemblyItems optimisedItems; AssemblyItems optimisedItems;
bool usesMSize = ranges::any_of(m_items, [](AssemblyItem const& _i) { bool usesMSize = ranges::any_of(m_items, [](AssemblyItem const& _i) {
return _i == AssemblyItem{Instruction::MSIZE} || _i.type() == VerbatimBytecode; return _i == AssemblyItem{InternalInstruction::MSIZE} || _i.type() == VerbatimBytecode;
}); });
auto iter = m_items.begin(); auto iter = m_items.begin();
@ -537,16 +537,22 @@ LinkerObject const& Assembly::assemble() const
multimap<size_t, size_t> subRef; multimap<size_t, size_t> subRef;
vector<unsigned> sizeRef; ///< Pointers to code locations where the size of the program is inserted vector<unsigned> sizeRef; ///< Pointers to code locations where the size of the program is inserted
unsigned bytesPerTag = numberEncodingSize(bytesRequiredForCode); unsigned bytesPerTag = numberEncodingSize(bytesRequiredForCode);
uint8_t tagPush = static_cast<uint8_t>(pushInstruction(bytesPerTag)); InternalInstruction tagPush = pushInstruction(bytesPerTag);
unsigned bytesRequiredIncludingData = bytesRequiredForCode + 1 + static_cast<unsigned>(m_auxiliaryData.size()); unsigned bytesRequiredIncludingData = bytesRequiredForCode + 1 + static_cast<unsigned>(m_auxiliaryData.size());
for (auto const& sub: m_subs) for (auto const& sub: m_subs)
bytesRequiredIncludingData += static_cast<unsigned>(sub->assemble().bytecode.size()); bytesRequiredIncludingData += static_cast<unsigned>(sub->assemble().bytecode.size());
unsigned bytesPerDataRef = numberEncodingSize(bytesRequiredIncludingData); unsigned bytesPerDataRef = numberEncodingSize(bytesRequiredIncludingData);
uint8_t dataRefPush = static_cast<uint8_t>(pushInstruction(bytesPerDataRef)); InternalInstruction dataRefPush = pushInstruction(bytesPerDataRef);
ret.bytecode.reserve(bytesRequiredIncludingData); ret.bytecode.reserve(bytesRequiredIncludingData);
auto const appendInstruction = [&](InternalInstruction _instruction)
{
ret.bytecode.push_back(static_cast<uint8_t>((evmasm::instructionOpcode(_instruction))));
};
for (AssemblyItem const& i: m_items) for (AssemblyItem const& i: m_items)
{ {
// store position of the invalid jump destination // store position of the invalid jump destination
@ -556,12 +562,12 @@ LinkerObject const& Assembly::assemble() const
switch (i.type()) switch (i.type())
{ {
case Operation: case Operation:
ret.bytecode.push_back(static_cast<uint8_t>(i.instruction())); appendInstruction(i.instruction());
break; break;
case Push: case Push:
{ {
unsigned b = max<unsigned>(1, numberEncodingSize(i.data())); unsigned b = max<unsigned>(1, numberEncodingSize(i.data()));
ret.bytecode.push_back(static_cast<uint8_t>(pushInstruction(b))); appendInstruction(pushInstruction(b));
ret.bytecode.resize(ret.bytecode.size() + b); ret.bytecode.resize(ret.bytecode.size() + b);
bytesRef byr(&ret.bytecode.back() + 1 - b, b); bytesRef byr(&ret.bytecode.back() + 1 - b, b);
toBigEndian(i.data(), byr); toBigEndian(i.data(), byr);
@ -569,19 +575,19 @@ LinkerObject const& Assembly::assemble() const
} }
case PushTag: case PushTag:
{ {
ret.bytecode.push_back(tagPush); appendInstruction(tagPush);
tagRef[ret.bytecode.size()] = i.splitForeignPushTag(); tagRef[ret.bytecode.size()] = i.splitForeignPushTag();
ret.bytecode.resize(ret.bytecode.size() + bytesPerTag); ret.bytecode.resize(ret.bytecode.size() + bytesPerTag);
break; break;
} }
case PushData: case PushData:
ret.bytecode.push_back(dataRefPush); appendInstruction(dataRefPush);
dataRef.insert(make_pair(h256(i.data()), ret.bytecode.size())); dataRef.insert(make_pair(h256(i.data()), ret.bytecode.size()));
ret.bytecode.resize(ret.bytecode.size() + bytesPerDataRef); ret.bytecode.resize(ret.bytecode.size() + bytesPerDataRef);
break; break;
case PushSub: case PushSub:
assertThrow(i.data() <= numeric_limits<size_t>::max(), AssemblyException, ""); assertThrow(i.data() <= numeric_limits<size_t>::max(), AssemblyException, "");
ret.bytecode.push_back(dataRefPush); appendInstruction(dataRefPush);
subRef.insert(make_pair(static_cast<size_t>(i.data()), ret.bytecode.size())); subRef.insert(make_pair(static_cast<size_t>(i.data()), ret.bytecode.size()));
ret.bytecode.resize(ret.bytecode.size() + bytesPerDataRef); ret.bytecode.resize(ret.bytecode.size() + bytesPerDataRef);
break; break;
@ -591,7 +597,7 @@ LinkerObject const& Assembly::assemble() const
auto s = subAssemblyById(static_cast<size_t>(i.data()))->assemble().bytecode.size(); auto s = subAssemblyById(static_cast<size_t>(i.data()))->assemble().bytecode.size();
i.setPushedValue(u256(s)); i.setPushedValue(u256(s));
unsigned b = max<unsigned>(1, numberEncodingSize(s)); unsigned b = max<unsigned>(1, numberEncodingSize(s));
ret.bytecode.push_back(static_cast<uint8_t>(pushInstruction(b))); appendInstruction(pushInstruction(b));
ret.bytecode.resize(ret.bytecode.size() + b); ret.bytecode.resize(ret.bytecode.size() + b);
bytesRef byr(&ret.bytecode.back() + 1 - b, b); bytesRef byr(&ret.bytecode.back() + 1 - b, b);
toBigEndian(s, byr); toBigEndian(s, byr);
@ -599,18 +605,18 @@ LinkerObject const& Assembly::assemble() const
} }
case PushProgramSize: case PushProgramSize:
{ {
ret.bytecode.push_back(dataRefPush); appendInstruction(dataRefPush);
sizeRef.push_back(static_cast<unsigned>(ret.bytecode.size())); sizeRef.push_back(static_cast<unsigned>(ret.bytecode.size()));
ret.bytecode.resize(ret.bytecode.size() + bytesPerDataRef); ret.bytecode.resize(ret.bytecode.size() + bytesPerDataRef);
break; break;
} }
case PushLibraryAddress: case PushLibraryAddress:
ret.bytecode.push_back(static_cast<uint8_t>(Instruction::PUSH20)); appendInstruction(InternalInstruction::PUSH20);
ret.linkReferences[ret.bytecode.size()] = m_libraries.at(i.data()); ret.linkReferences[ret.bytecode.size()] = m_libraries.at(i.data());
ret.bytecode.resize(ret.bytecode.size() + 20); ret.bytecode.resize(ret.bytecode.size() + 20);
break; break;
case PushImmutable: case PushImmutable:
ret.bytecode.push_back(static_cast<uint8_t>(Instruction::PUSH32)); appendInstruction(InternalInstruction::PUSH32);
// Maps keccak back to the "identifier" string of that immutable. // Maps keccak back to the "identifier" string of that immutable.
ret.immutableReferences[i.data()].first = m_immutables.at(i.data()); ret.immutableReferences[i.data()].first = m_immutables.at(i.data());
// Record the bytecode offset of the PUSH32 argument. // Record the bytecode offset of the PUSH32 argument.
@ -629,26 +635,26 @@ LinkerObject const& Assembly::assemble() const
{ {
if (i != offsets.size() - 1) if (i != offsets.size() - 1)
{ {
ret.bytecode.push_back(uint8_t(Instruction::DUP2)); appendInstruction(InternalInstruction::DUP2);
ret.bytecode.push_back(uint8_t(Instruction::DUP2)); appendInstruction(InternalInstruction::DUP2);
} }
// TODO: should we make use of the constant optimizer methods for pushing the offsets? // TODO: should we make use of the constant optimizer methods for pushing the offsets?
bytes offsetBytes = toCompactBigEndian(u256(offsets[i])); bytes offsetBytes = toCompactBigEndian(u256(offsets[i]));
ret.bytecode.push_back(static_cast<uint8_t>(pushInstruction(static_cast<unsigned>(offsetBytes.size())))); appendInstruction(pushInstruction(static_cast<unsigned>(offsetBytes.size())));
ret.bytecode += offsetBytes; ret.bytecode += offsetBytes;
ret.bytecode.push_back(uint8_t(Instruction::ADD)); appendInstruction(InternalInstruction::ADD);
ret.bytecode.push_back(uint8_t(Instruction::MSTORE)); appendInstruction(InternalInstruction::MSTORE);
} }
if (offsets.empty()) if (offsets.empty())
{ {
ret.bytecode.push_back(uint8_t(Instruction::POP)); appendInstruction(InternalInstruction::POP);
ret.bytecode.push_back(uint8_t(Instruction::POP)); appendInstruction(InternalInstruction::POP);
} }
immutableReferencesBySub.erase(i.data()); immutableReferencesBySub.erase(i.data());
break; break;
} }
case PushDeployTimeAddress: case PushDeployTimeAddress:
ret.bytecode.push_back(static_cast<uint8_t>(Instruction::PUSH20)); appendInstruction(InternalInstruction::PUSH20);
ret.bytecode.resize(ret.bytecode.size() + 20); ret.bytecode.resize(ret.bytecode.size() + 20);
break; break;
case Tag: case Tag:
@ -659,7 +665,7 @@ LinkerObject const& Assembly::assemble() const
assertThrow(ret.bytecode.size() < 0xffffffffL, AssemblyException, "Tag too large."); assertThrow(ret.bytecode.size() < 0xffffffffL, AssemblyException, "Tag too large.");
assertThrow(m_tagPositionsInBytecode[tagId] == numeric_limits<size_t>::max(), AssemblyException, "Duplicate tag position."); assertThrow(m_tagPositionsInBytecode[tagId] == numeric_limits<size_t>::max(), AssemblyException, "Duplicate tag position.");
m_tagPositionsInBytecode[tagId] = ret.bytecode.size(); m_tagPositionsInBytecode[tagId] = ret.bytecode.size();
ret.bytecode.push_back(static_cast<uint8_t>(Instruction::JUMPDEST)); appendInstruction(InternalInstruction::JUMPDEST);
break; break;
} }
default: default:
@ -677,7 +683,7 @@ LinkerObject const& Assembly::assemble() const
if (!m_subs.empty() || !m_data.empty() || !m_auxiliaryData.empty()) if (!m_subs.empty() || !m_data.empty() || !m_auxiliaryData.empty())
// Append an INVALID here to help tests find miscompilation. // Append an INVALID here to help tests find miscompilation.
ret.bytecode.push_back(static_cast<uint8_t>(Instruction::INVALID)); appendInstruction(InternalInstruction::INVALID);
for (auto const& [subIdPath, bytecodeOffset]: subRef) for (auto const& [subIdPath, bytecodeOffset]: subRef)
{ {

12
libevmasm/Disassemble.cpp
View File

@ -16,6 +16,8 @@
*/ */
// SPDX-License-Identifier: GPL-3.0 // SPDX-License-Identifier: GPL-3.0
#include "libevmasm/Instruction.h"
#include "liblangutil/EVMVersion.h"
#include <libevmasm/Disassemble.h> #include <libevmasm/Disassemble.h>
#include <libsolutil/Common.h> #include <libsolutil/Common.h>
@ -27,15 +29,15 @@ using namespace solidity;
using namespace solidity::util; using namespace solidity::util;
using namespace solidity::evmasm; using namespace solidity::evmasm;
void solidity::evmasm::eachInstruction( void solidity::evmasm::eachInstruction(
bytes const& _mem, bytes const& _mem,
function<void(Instruction,u256 const&)> const& _onInstruction langutil::EVMVersion _evmVersion,
function<void(InternalInstruction,u256 const&)> const& _onInstruction
) )
{ {
for (auto it = _mem.begin(); it < _mem.end(); ++it) for (auto it = _mem.begin(); it < _mem.end(); ++it)
{ {
Instruction const instr{*it}; InternalInstruction instr = internalInstruction(InstructionOpCode(*it), _evmVersion);
int additional = 0; int additional = 0;
if (isValidInstruction(instr)) if (isValidInstruction(instr))
additional = instructionInfo(instr).additional; additional = instructionInfo(instr).additional;
@ -57,10 +59,10 @@ void solidity::evmasm::eachInstruction(
} }
} }
string solidity::evmasm::disassemble(bytes const& _mem, string const& _delimiter) string solidity::evmasm::disassemble(bytes const& _mem, langutil::EVMVersion _evmVersion, string const& _delimiter)
{ {
stringstream ret; stringstream ret;
eachInstruction(_mem, [&](Instruction _instr, u256 const& _data) { eachInstruction(_mem, _evmVersion, [&](InternalInstruction _instr, u256 const& _data) {
if (!isValidInstruction(_instr)) if (!isValidInstruction(_instr))
ret << "0x" << std::uppercase << std::hex << static_cast<int>(_instr) << _delimiter; ret << "0x" << std::uppercase << std::hex << static_cast<int>(_instr) << _delimiter;
else else

5
libevmasm/Disassemble.h
View File

@ -18,6 +18,7 @@
#pragma once #pragma once
#include "liblangutil/EVMVersion.h"
#include <libsolutil/Common.h> #include <libsolutil/Common.h>
#include <libsolutil/Numeric.h> #include <libsolutil/Numeric.h>
@ -30,9 +31,9 @@ namespace solidity::evmasm
{ {
/// Iterate through EVM code and call a function on each instruction. /// Iterate through EVM code and call a function on each instruction.
void eachInstruction(bytes const& _mem, std::function<void(Instruction, u256 const&)> const& _onInstruction); void eachInstruction(bytes const& _mem, langutil::EVMVersion _evmVersion, std::function<void(InternalInstruction, u256 const&)> const& _onInstruction);
/// Convert from EVM code to simple EVM assembly language. /// Convert from EVM code to simple EVM assembly language.
std::string disassemble(bytes const& _mem, std::string const& _delimiter = " "); std::string disassemble(bytes const& _mem, langutil::EVMVersion _evmVersion, std::string const& _delimiter = " ");
} }

649
libevmasm/Instruction.cpp
View File

@ -15,328 +15,379 @@
along with solidity. If not, see <http://www.gnu.org/licenses/>. along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/ */
// SPDX-License-Identifier: GPL-3.0 // SPDX-License-Identifier: GPL-3.0
/** @file Instruction.cpp /** @file InternalInstruction.cpp
* @author Gav Wood <i@gavwood.com> * @author Gav Wood <i@gavwood.com>
* @date 2014 * @date 2014
*/ */
#include <iterator>
#include <libevmasm/Instruction.h> #include <libevmasm/Instruction.h>
#include <liblangutil/EVMVersion.h>
#include <libsolutil/SetOnce.h>
#include <array>
using namespace std; using namespace std;
using namespace solidity; using namespace solidity;
using namespace solidity::util; using namespace solidity::util;
using namespace solidity::evmasm; using namespace solidity::evmasm;
std::map<std::string, Instruction> const solidity::evmasm::c_instructions = /// Caches the opcode to internal mapping upon first usage.
std::multimap<InstructionOpCode, InternalInstruction> opcode2InternalCache;
std::map<std::string, InternalInstruction> const solidity::evmasm::c_instructions =
{ {
{ "STOP", Instruction::STOP }, { "STOP", InternalInstruction::STOP },
{ "ADD", Instruction::ADD }, { "ADD", InternalInstruction::ADD },
{ "SUB", Instruction::SUB }, { "SUB", InternalInstruction::SUB },
{ "MUL", Instruction::MUL }, { "MUL", InternalInstruction::MUL },
{ "DIV", Instruction::DIV }, { "DIV", InternalInstruction::DIV },
{ "SDIV", Instruction::SDIV }, { "SDIV", InternalInstruction::SDIV },
{ "MOD", Instruction::MOD }, { "MOD", InternalInstruction::MOD },
{ "SMOD", Instruction::SMOD }, { "SMOD", InternalInstruction::SMOD },
{ "EXP", Instruction::EXP }, { "EXP", InternalInstruction::EXP },
{ "NOT", Instruction::NOT }, { "NOT", InternalInstruction::NOT },
{ "LT", Instruction::LT }, { "LT", InternalInstruction::LT },
{ "GT", Instruction::GT }, { "GT", InternalInstruction::GT },
{ "SLT", Instruction::SLT }, { "SLT", InternalInstruction::SLT },
{ "SGT", Instruction::SGT }, { "SGT", InternalInstruction::SGT },
{ "EQ", Instruction::EQ }, { "EQ", InternalInstruction::EQ },
{ "ISZERO", Instruction::ISZERO }, { "ISZERO", InternalInstruction::ISZERO },
{ "AND", Instruction::AND }, { "AND", InternalInstruction::AND },
{ "OR", Instruction::OR }, { "OR", InternalInstruction::OR },
{ "XOR", Instruction::XOR }, { "XOR", InternalInstruction::XOR },
{ "BYTE", Instruction::BYTE }, { "BYTE", InternalInstruction::BYTE },
{ "SHL", Instruction::SHL }, { "SHL", InternalInstruction::SHL },
{ "SHR", Instruction::SHR }, { "SHR", InternalInstruction::SHR },
{ "SAR", Instruction::SAR }, { "SAR", InternalInstruction::SAR },
{ "ADDMOD", Instruction::ADDMOD }, { "ADDMOD", InternalInstruction::ADDMOD },
{ "MULMOD", Instruction::MULMOD }, { "MULMOD", InternalInstruction::MULMOD },
{ "SIGNEXTEND", Instruction::SIGNEXTEND }, { "SIGNEXTEND", InternalInstruction::SIGNEXTEND },
{ "KECCAK256", Instruction::KECCAK256 }, { "KECCAK256", InternalInstruction::KECCAK256 },
{ "ADDRESS", Instruction::ADDRESS }, { "ADDRESS", InternalInstruction::ADDRESS },
{ "BALANCE", Instruction::BALANCE }, { "BALANCE", InternalInstruction::BALANCE },
{ "ORIGIN", Instruction::ORIGIN }, { "ORIGIN", InternalInstruction::ORIGIN },
{ "CALLER", Instruction::CALLER }, { "CALLER", InternalInstruction::CALLER },
{ "CALLVALUE", Instruction::CALLVALUE }, { "CALLVALUE", InternalInstruction::CALLVALUE },
{ "CALLDATALOAD", Instruction::CALLDATALOAD }, { "CALLDATALOAD", InternalInstruction::CALLDATALOAD },
{ "CALLDATASIZE", Instruction::CALLDATASIZE }, { "CALLDATASIZE", InternalInstruction::CALLDATASIZE },
{ "CALLDATACOPY", Instruction::CALLDATACOPY }, { "CALLDATACOPY", InternalInstruction::CALLDATACOPY },
{ "CODESIZE", Instruction::CODESIZE }, { "CODESIZE", InternalInstruction::CODESIZE },
{ "CODECOPY", Instruction::CODECOPY }, { "CODECOPY", InternalInstruction::CODECOPY },
{ "GASPRICE", Instruction::GASPRICE }, { "GASPRICE", InternalInstruction::GASPRICE },
{ "EXTCODESIZE", Instruction::EXTCODESIZE }, { "EXTCODESIZE", InternalInstruction::EXTCODESIZE },
{ "EXTCODECOPY", Instruction::EXTCODECOPY }, { "EXTCODECOPY", InternalInstruction::EXTCODECOPY },
{ "RETURNDATASIZE", Instruction::RETURNDATASIZE }, { "RETURNDATASIZE", InternalInstruction::RETURNDATASIZE },
{ "RETURNDATACOPY", Instruction::RETURNDATACOPY }, { "RETURNDATACOPY", InternalInstruction::RETURNDATACOPY },
{ "EXTCODEHASH", Instruction::EXTCODEHASH }, { "EXTCODEHASH", InternalInstruction::EXTCODEHASH },
{ "BLOCKHASH", Instruction::BLOCKHASH }, { "BLOCKHASH", InternalInstruction::BLOCKHASH },
{ "COINBASE", Instruction::COINBASE }, { "COINBASE", InternalInstruction::COINBASE },
{ "TIMESTAMP", Instruction::TIMESTAMP }, { "TIMESTAMP", InternalInstruction::TIMESTAMP },
{ "NUMBER", Instruction::NUMBER }, { "NUMBER", InternalInstruction::NUMBER },
{ "DIFFICULTY", Instruction::DIFFICULTY }, { "DIFFICULTY", InternalInstruction::DIFFICULTY },
{ "PREVRANDAO", Instruction::PREVRANDAO }, { "PREVRANDAO", InternalInstruction::PREVRANDAO },
{ "GASLIMIT", Instruction::GASLIMIT }, { "GASLIMIT", InternalInstruction::GASLIMIT },
{ "CHAINID", Instruction::CHAINID }, { "CHAINID", InternalInstruction::CHAINID },
{ "SELFBALANCE", Instruction::SELFBALANCE }, { "SELFBALANCE", InternalInstruction::SELFBALANCE },
{ "BASEFEE", Instruction::BASEFEE }, { "BASEFEE", InternalInstruction::BASEFEE },
{ "POP", Instruction::POP }, { "POP", InternalInstruction::POP },
{ "MLOAD", Instruction::MLOAD }, { "MLOAD", InternalInstruction::MLOAD },
{ "MSTORE", Instruction::MSTORE }, { "MSTORE", InternalInstruction::MSTORE },
{ "MSTORE8", Instruction::MSTORE8 }, { "MSTORE8", InternalInstruction::MSTORE8 },
{ "SLOAD", Instruction::SLOAD }, { "SLOAD", InternalInstruction::SLOAD },
{ "SSTORE", Instruction::SSTORE }, { "SSTORE", InternalInstruction::SSTORE },
{ "JUMP", Instruction::JUMP }, { "JUMP", InternalInstruction::JUMP },
{ "JUMPI", Instruction::JUMPI }, { "JUMPI", InternalInstruction::JUMPI },
{ "PC", Instruction::PC }, { "PC", InternalInstruction::PC },
{ "MSIZE", Instruction::MSIZE }, { "MSIZE", InternalInstruction::MSIZE },
{ "GAS", Instruction::GAS }, { "GAS", InternalInstruction::GAS },
{ "JUMPDEST", Instruction::JUMPDEST }, { "JUMPDEST", InternalInstruction::JUMPDEST },
{ "PUSH1", Instruction::PUSH1 }, { "PUSH1", InternalInstruction::PUSH1 },
{ "PUSH2", Instruction::PUSH2 }, { "PUSH2", InternalInstruction::PUSH2 },
{ "PUSH3", Instruction::PUSH3 }, { "PUSH3", InternalInstruction::PUSH3 },
{ "PUSH4", Instruction::PUSH4 }, { "PUSH4", InternalInstruction::PUSH4 },
{ "PUSH5", Instruction::PUSH5 }, { "PUSH5", InternalInstruction::PUSH5 },
{ "PUSH6", Instruction::PUSH6 }, { "PUSH6", InternalInstruction::PUSH6 },
{ "PUSH7", Instruction::PUSH7 }, { "PUSH7", InternalInstruction::PUSH7 },
{ "PUSH8", Instruction::PUSH8 }, { "PUSH8", InternalInstruction::PUSH8 },
{ "PUSH9", Instruction::PUSH9 }, { "PUSH9", InternalInstruction::PUSH9 },
{ "PUSH10", Instruction::PUSH10 }, { "PUSH10", InternalInstruction::PUSH10 },
{ "PUSH11", Instruction::PUSH11 }, { "PUSH11", InternalInstruction::PUSH11 },
{ "PUSH12", Instruction::PUSH12 }, { "PUSH12", InternalInstruction::PUSH12 },
{ "PUSH13", Instruction::PUSH13 }, { "PUSH13", InternalInstruction::PUSH13 },
{ "PUSH14", Instruction::PUSH14 }, { "PUSH14", InternalInstruction::PUSH14 },
{ "PUSH15", Instruction::PUSH15 }, { "PUSH15", InternalInstruction::PUSH15 },
{ "PUSH16", Instruction::PUSH16 }, { "PUSH16", InternalInstruction::PUSH16 },
{ "PUSH17", Instruction::PUSH17 }, { "PUSH17", InternalInstruction::PUSH17 },
{ "PUSH18", Instruction::PUSH18 }, { "PUSH18", InternalInstruction::PUSH18 },
{ "PUSH19", Instruction::PUSH19 }, { "PUSH19", InternalInstruction::PUSH19 },
{ "PUSH20", Instruction::PUSH20 }, { "PUSH20", InternalInstruction::PUSH20 },
{ "PUSH21", Instruction::PUSH21 }, { "PUSH21", InternalInstruction::PUSH21 },
{ "PUSH22", Instruction::PUSH22 }, { "PUSH22", InternalInstruction::PUSH22 },
{ "PUSH23", Instruction::PUSH23 }, { "PUSH23", InternalInstruction::PUSH23 },
{ "PUSH24", Instruction::PUSH24 }, { "PUSH24", InternalInstruction::PUSH24 },
{ "PUSH25", Instruction::PUSH25 }, { "PUSH25", InternalInstruction::PUSH25 },
{ "PUSH26", Instruction::PUSH26 }, { "PUSH26", InternalInstruction::PUSH26 },
{ "PUSH27", Instruction::PUSH27 }, { "PUSH27", InternalInstruction::PUSH27 },
{ "PUSH28", Instruction::PUSH28 }, { "PUSH28", InternalInstruction::PUSH28 },
{ "PUSH29", Instruction::PUSH29 }, { "PUSH29", InternalInstruction::PUSH29 },
{ "PUSH30", Instruction::PUSH30 }, { "PUSH30", InternalInstruction::PUSH30 },
{ "PUSH31", Instruction::PUSH31 }, { "PUSH31", InternalInstruction::PUSH31 },
{ "PUSH32", Instruction::PUSH32 }, { "PUSH32", InternalInstruction::PUSH32 },
{ "DUP1", Instruction::DUP1 }, { "DUP1", InternalInstruction::DUP1 },
{ "DUP2", Instruction::DUP2 }, { "DUP2", InternalInstruction::DUP2 },
{ "DUP3", Instruction::DUP3 }, { "DUP3", InternalInstruction::DUP3 },
{ "DUP4", Instruction::DUP4 }, { "DUP4", InternalInstruction::DUP4 },
{ "DUP5", Instruction::DUP5 }, { "DUP5", InternalInstruction::DUP5 },
{ "DUP6", Instruction::DUP6 }, { "DUP6", InternalInstruction::DUP6 },
{ "DUP7", Instruction::DUP7 }, { "DUP7", InternalInstruction::DUP7 },
{ "DUP8", Instruction::DUP8 }, { "DUP8", InternalInstruction::DUP8 },
{ "DUP9", Instruction::DUP9 }, { "DUP9", InternalInstruction::DUP9 },
{ "DUP10", Instruction::DUP10 }, { "DUP10", InternalInstruction::DUP10 },
{ "DUP11", Instruction::DUP11 }, { "DUP11", InternalInstruction::DUP11 },
{ "DUP12", Instruction::DUP12 }, { "DUP12", InternalInstruction::DUP12 },
{ "DUP13", Instruction::DUP13 }, { "DUP13", InternalInstruction::DUP13 },
{ "DUP14", Instruction::DUP14 }, { "DUP14", InternalInstruction::DUP14 },
{ "DUP15", Instruction::DUP15 }, { "DUP15", InternalInstruction::DUP15 },
{ "DUP16", Instruction::DUP16 }, { "DUP16", InternalInstruction::DUP16 },
{ "SWAP1", Instruction::SWAP1 }, { "SWAP1", InternalInstruction::SWAP1 },
{ "SWAP2", Instruction::SWAP2 }, { "SWAP2", InternalInstruction::SWAP2 },
{ "SWAP3", Instruction::SWAP3 }, { "SWAP3", InternalInstruction::SWAP3 },
{ "SWAP4", Instruction::SWAP4 }, { "SWAP4", InternalInstruction::SWAP4 },
{ "SWAP5", Instruction::SWAP5 }, { "SWAP5", InternalInstruction::SWAP5 },
{ "SWAP6", Instruction::SWAP6 }, { "SWAP6", InternalInstruction::SWAP6 },
{ "SWAP7", Instruction::SWAP7 }, { "SWAP7", InternalInstruction::SWAP7 },
{ "SWAP8", Instruction::SWAP8 }, { "SWAP8", InternalInstruction::SWAP8 },
{ "SWAP9", Instruction::SWAP9 }, { "SWAP9", InternalInstruction::SWAP9 },
{ "SWAP10", Instruction::SWAP10 }, { "SWAP10", InternalInstruction::SWAP10 },
{ "SWAP11", Instruction::SWAP11 }, { "SWAP11", InternalInstruction::SWAP11 },
{ "SWAP12", Instruction::SWAP12 }, { "SWAP12", InternalInstruction::SWAP12 },
{ "SWAP13", Instruction::SWAP13 }, { "SWAP13", InternalInstruction::SWAP13 },
{ "SWAP14", Instruction::SWAP14 }, { "SWAP14", InternalInstruction::SWAP14 },
{ "SWAP15", Instruction::SWAP15 }, { "SWAP15", InternalInstruction::SWAP15 },
{ "SWAP16", Instruction::SWAP16 }, { "SWAP16", InternalInstruction::SWAP16 },
{ "LOG0", Instruction::LOG0 }, { "LOG0", InternalInstruction::LOG0 },
{ "LOG1", Instruction::LOG1 }, { "LOG1", InternalInstruction::LOG1 },
{ "LOG2", Instruction::LOG2 }, { "LOG2", InternalInstruction::LOG2 },
{ "LOG3", Instruction::LOG3 }, { "LOG3", InternalInstruction::LOG3 },
{ "LOG4", Instruction::LOG4 }, { "LOG4", InternalInstruction::LOG4 },
{ "CREATE", Instruction::CREATE }, { "CREATE", InternalInstruction::CREATE },
{ "CALL", Instruction::CALL }, { "CALL", InternalInstruction::CALL },
{ "CALLCODE", Instruction::CALLCODE }, { "CALLCODE", InternalInstruction::CALLCODE },
{ "STATICCALL", Instruction::STATICCALL }, { "STATICCALL", InternalInstruction::STATICCALL },
{ "RETURN", Instruction::RETURN }, { "RETURN", InternalInstruction::RETURN },
{ "DELEGATECALL", Instruction::DELEGATECALL }, { "DELEGATECALL", InternalInstruction::DELEGATECALL },
{ "CREATE2", Instruction::CREATE2 }, { "CREATE2", InternalInstruction::CREATE2 },
{ "REVERT", Instruction::REVERT }, { "REVERT", InternalInstruction::REVERT },
{ "INVALID", Instruction::INVALID }, { "INVALID", InternalInstruction::INVALID },
{ "SELFDESTRUCT", Instruction::SELFDESTRUCT } { "SELFDESTRUCT", InternalInstruction::SELFDESTRUCT }
}; };
static std::map<Instruction, InstructionInfo> const c_instructionInfo = static std::array<InstructionInfo, static_cast<size_t>(InternalInstruction::MAX_INTERNAL_INSTRUCTION)> const c_instructionInfo =
{ // Add, Args, Ret, SideEffects, GasPriceTier {{ // Add, Args, Ret, SideEffects, GasPriceTier
{ Instruction::STOP, { "STOP", 0, 0, 0, true, Tier::Zero } }, { "STOP", InstructionOpCode::STOP, 0, 0, 0, true, Tier::Zero },
{ Instruction::ADD, { "ADD", 0, 2, 1, false, Tier::VeryLow } }, { "ADD", InstructionOpCode::ADD, 0, 2, 1, false, Tier::VeryLow },
{ Instruction::SUB, { "SUB", 0, 2, 1, false, Tier::VeryLow } }, { "SUB", InstructionOpCode::SUB, 0, 2, 1, false, Tier::VeryLow },
{ Instruction::MUL, { "MUL", 0, 2, 1, false, Tier::Low } }, { "MUL", InstructionOpCode::MUL, 0, 2, 1, false, Tier::Low },
{ Instruction::DIV, { "DIV", 0, 2, 1, false, Tier::Low } }, { "DIV", InstructionOpCode::DIV, 0, 2, 1, false, Tier::Low },
{ Instruction::SDIV, { "SDIV", 0, 2, 1, false, Tier::Low } }, { "SDIV", InstructionOpCode::SDIV, 0, 2, 1, false, Tier::Low },
{ Instruction::MOD, { "MOD", 0, 2, 1, false, Tier::Low } }, { "MOD", InstructionOpCode::MOD, 0, 2, 1, false, Tier::Low },
{ Instruction::SMOD, { "SMOD", 0, 2, 1, false, Tier::Low } }, { "SMOD", InstructionOpCode::SMOD, 0, 2, 1, false, Tier::Low },
{ Instruction::EXP, { "EXP", 0, 2, 1, false, Tier::Special } }, { "ADDMOD", InstructionOpCode::ADDMOD, 0, 3, 1, false, Tier::Mid },
{ Instruction::NOT, { "NOT", 0, 1, 1, false, Tier::VeryLow } }, { "MULMOD", InstructionOpCode::MULMOD, 0, 3, 1, false, Tier::Mid },
{ Instruction::LT, { "LT", 0, 2, 1, false, Tier::VeryLow } }, { "EXP", InstructionOpCode::EXP, 0, 2, 1, false, Tier::Special },
{ Instruction::GT, { "GT", 0, 2, 1, false, Tier::VeryLow } }, { "SIGNEXTEND", InstructionOpCode::SIGNEXTEND, 0, 2, 1, false, Tier::Low },
{ Instruction::SLT, { "SLT", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::SGT, { "SGT", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::EQ, { "EQ", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::ISZERO, { "ISZERO", 0, 1, 1, false, Tier::VeryLow } },
{ Instruction::AND, { "AND", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::OR, { "OR", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::XOR, { "XOR", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::BYTE, { "BYTE", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::SHL, { "SHL", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::SHR, { "SHR", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::SAR, { "SAR", 0, 2, 1, false, Tier::VeryLow } },
{ Instruction::ADDMOD, { "ADDMOD", 0, 3, 1, false, Tier::Mid } },
{ Instruction::MULMOD, { "MULMOD", 0, 3, 1, false, Tier::Mid } },
{ Instruction::SIGNEXTEND, { "SIGNEXTEND", 0, 2, 1, false, Tier::Low } },
{ Instruction::KECCAK256, { "KECCAK256", 0, 2, 1, true, Tier::Special } },
{ Instruction::ADDRESS, { "ADDRESS", 0, 0, 1, false, Tier::Base } },
{ Instruction::BALANCE, { "BALANCE", 0, 1, 1, false, Tier::Balance } },
{ Instruction::ORIGIN, { "ORIGIN", 0, 0, 1, false, Tier::Base } },
{ Instruction::CALLER, { "CALLER", 0, 0, 1, false, Tier::Base } },
{ Instruction::CALLVALUE, { "CALLVALUE", 0, 0, 1, false, Tier::Base } },
{ Instruction::CALLDATALOAD,{ "CALLDATALOAD", 0, 1, 1, false, Tier::VeryLow } },
{ Instruction::CALLDATASIZE,{ "CALLDATASIZE", 0, 0, 1, false, Tier::Base } },
{ Instruction::CALLDATACOPY,{ "CALLDATACOPY", 0, 3, 0, true, Tier::VeryLow } },
{ Instruction::CODESIZE, { "CODESIZE", 0, 0, 1, false, Tier::Base } },
{ Instruction::CODECOPY, { "CODECOPY", 0, 3, 0, true, Tier::VeryLow } },
{ Instruction::GASPRICE, { "GASPRICE", 0, 0, 1, false, Tier::Base } },
{ Instruction::EXTCODESIZE, { "EXTCODESIZE", 0, 1, 1, false, Tier::ExtCode } },
{ Instruction::EXTCODECOPY, { "EXTCODECOPY", 0, 4, 0, true, Tier::ExtCode } },
{ Instruction::RETURNDATASIZE, {"RETURNDATASIZE", 0, 0, 1, false, Tier::Base } },
{ Instruction::RETURNDATACOPY, {"RETURNDATACOPY", 0, 3, 0, true, Tier::VeryLow } },
{ Instruction::EXTCODEHASH, { "EXTCODEHASH", 0, 1, 1, false, Tier::Balance } },
{ Instruction::BLOCKHASH, { "BLOCKHASH", 0, 1, 1, false, Tier::Ext } },
{ Instruction::COINBASE, { "COINBASE", 0, 0, 1, false, Tier::Base } },
{ Instruction::TIMESTAMP, { "TIMESTAMP", 0, 0, 1, false, Tier::Base } },
{ Instruction::NUMBER, { "NUMBER", 0, 0, 1, false, Tier::Base } },
// { Instruction::PREVRANDAO, { "PREVRANDAO", 0, 0, 1, false, Tier::Base } },
// TODO Replace with PREVRANDAO in the next breaking release
{ Instruction::DIFFICULTY, { "DIFFICULTY", 0, 0, 1, false, Tier::Base } },
{ Instruction::GASLIMIT, { "GASLIMIT", 0, 0, 1, false, Tier::Base } },
{ Instruction::CHAINID, { "CHAINID", 0, 0, 1, false, Tier::Base } },
{ Instruction::SELFBALANCE, { "SELFBALANCE", 0, 0, 1, false, Tier::Low } },
{ Instruction::BASEFEE, { "BASEFEE", 0, 0, 1, false, Tier::Base } },
{ Instruction::POP, { "POP", 0, 1, 0, false, Tier::Base } },
{ Instruction::MLOAD, { "MLOAD", 0, 1, 1, true, Tier::VeryLow } },
{ Instruction::MSTORE, { "MSTORE", 0, 2, 0, true, Tier::VeryLow } },
{ Instruction::MSTORE8, { "MSTORE8", 0, 2, 0, true, Tier::VeryLow } },
{ Instruction::SLOAD, { "SLOAD", 0, 1, 1, false, Tier::Special } },
{ Instruction::SSTORE, { "SSTORE", 0, 2, 0, true, Tier::Special } },
{ Instruction::JUMP, { "JUMP", 0, 1, 0, true, Tier::Mid } },
{ Instruction::JUMPI, { "JUMPI", 0, 2, 0, true, Tier::High } },
{ Instruction::PC, { "PC", 0, 0, 1, false, Tier::Base } },
{ Instruction::MSIZE, { "MSIZE", 0, 0, 1, false, Tier::Base } },
{ Instruction::GAS, { "GAS", 0, 0, 1, false, Tier::Base } },
{ Instruction::JUMPDEST, { "JUMPDEST", 0, 0, 0, true, Tier::Special } },
{ Instruction::PUSH1, { "PUSH1", 1, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH2, { "PUSH2", 2, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH3, { "PUSH3", 3, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH4, { "PUSH4", 4, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH5, { "PUSH5", 5, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH6, { "PUSH6", 6, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH7, { "PUSH7", 7, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH8, { "PUSH8", 8, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH9, { "PUSH9", 9, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH10, { "PUSH10", 10, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH11, { "PUSH11", 11, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH12, { "PUSH12", 12, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH13, { "PUSH13", 13, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH14, { "PUSH14", 14, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH15, { "PUSH15", 15, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH16, { "PUSH16", 16, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH17, { "PUSH17", 17, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH18, { "PUSH18", 18, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH19, { "PUSH19", 19, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH20, { "PUSH20", 20, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH21, { "PUSH21", 21, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH22, { "PUSH22", 22, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH23, { "PUSH23", 23, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH24, { "PUSH24", 24, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH25, { "PUSH25", 25, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH26, { "PUSH26", 26, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH27, { "PUSH27", 27, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH28, { "PUSH28", 28, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH29, { "PUSH29", 29, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH30, { "PUSH30", 30, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH31, { "PUSH31", 31, 0, 1, false, Tier::VeryLow } },
{ Instruction::PUSH32, { "PUSH32", 32, 0, 1, false, Tier::VeryLow } },
{ Instruction::DUP1, { "DUP1", 0, 1, 2, false, Tier::VeryLow } },
{ Instruction::DUP2, { "DUP2", 0, 2, 3, false, Tier::VeryLow } },
{ Instruction::DUP3, { "DUP3", 0, 3, 4, false, Tier::VeryLow } },
{ Instruction::DUP4, { "DUP4", 0, 4, 5, false, Tier::VeryLow } },
{ Instruction::DUP5, { "DUP5", 0, 5, 6, false, Tier::VeryLow } },
{ Instruction::DUP6, { "DUP6", 0, 6, 7, false, Tier::VeryLow } },
{ Instruction::DUP7, { "DUP7", 0, 7, 8, false, Tier::VeryLow } },
{ Instruction::DUP8, { "DUP8", 0, 8, 9, false, Tier::VeryLow } },
{ Instruction::DUP9, { "DUP9", 0, 9, 10, false, Tier::VeryLow } },
{ Instruction::DUP10, { "DUP10", 0, 10, 11, false, Tier::VeryLow } },
{ Instruction::DUP11, { "DUP11", 0, 11, 12, false, Tier::VeryLow } },
{ Instruction::DUP12, { "DUP12", 0, 12, 13, false, Tier::VeryLow } },
{ Instruction::DUP13, { "DUP13", 0, 13, 14, false, Tier::VeryLow } },
{ Instruction::DUP14, { "DUP14", 0, 14, 15, false, Tier::VeryLow } },
{ Instruction::DUP15, { "DUP15", 0, 15, 16, false, Tier::VeryLow } },
{ Instruction::DUP16, { "DUP16", 0, 16, 17, false, Tier::VeryLow } },
{ Instruction::SWAP1, { "SWAP1", 0, 2, 2, false, Tier::VeryLow } },
{ Instruction::SWAP2, { "SWAP2", 0, 3, 3, false, Tier::VeryLow } },
{ Instruction::SWAP3, { "SWAP3", 0, 4, 4, false, Tier::VeryLow } },
{ Instruction::SWAP4, { "SWAP4", 0, 5, 5, false, Tier::VeryLow } },
{ Instruction::SWAP5, { "SWAP5", 0, 6, 6, false, Tier::VeryLow } },
{ Instruction::SWAP6, { "SWAP6", 0, 7, 7, false, Tier::VeryLow } },
{ Instruction::SWAP7, { "SWAP7", 0, 8, 8, false, Tier::VeryLow } },
{ Instruction::SWAP8, { "SWAP8", 0, 9, 9, false, Tier::VeryLow } },
{ Instruction::SWAP9, { "SWAP9", 0, 10, 10, false, Tier::VeryLow } },
{ Instruction::SWAP10, { "SWAP10", 0, 11, 11, false, Tier::VeryLow } },
{ Instruction::SWAP11, { "SWAP11", 0, 12, 12, false, Tier::VeryLow } },
{ Instruction::SWAP12, { "SWAP12", 0, 13, 13, false, Tier::VeryLow } },
{ Instruction::SWAP13, { "SWAP13", 0, 14, 14, false, Tier::VeryLow } },
{ Instruction::SWAP14, { "SWAP14", 0, 15, 15, false, Tier::VeryLow } },
{ Instruction::SWAP15, { "SWAP15", 0, 16, 16, false, Tier::VeryLow } },
{ Instruction::SWAP16, { "SWAP16", 0, 17, 17, false, Tier::VeryLow } },
{ Instruction::LOG0, { "LOG0", 0, 2, 0, true, Tier::Special } },
{ Instruction::LOG1, { "LOG1", 0, 3, 0, true, Tier::Special } },
{ Instruction::LOG2, { "LOG2", 0, 4, 0, true, Tier::Special } },
{ Instruction::LOG3, { "LOG3", 0, 5, 0, true, Tier::Special } },
{ Instruction::LOG4, { "LOG4", 0, 6, 0, true, Tier::Special } },
{ Instruction::CREATE, { "CREATE", 0, 3, 1, true, Tier::Special } },
{ Instruction::CALL, { "CALL", 0, 7, 1, true, Tier::Special } },
{ Instruction::CALLCODE, { "CALLCODE", 0, 7, 1, true, Tier::Special } },
{ Instruction::RETURN, { "RETURN", 0, 2, 0, true, Tier::Zero } },
{ Instruction::DELEGATECALL, { "DELEGATECALL", 0, 6, 1, true, Tier::Special } },
{ Instruction::STATICCALL, { "STATICCALL", 0, 6, 1, true, Tier::Special } },
{ Instruction::CREATE2, { "CREATE2", 0, 4, 1, true, Tier::Special } },
{ Instruction::REVERT, { "REVERT", 0, 2, 0, true, Tier::Zero } },
{ Instruction::INVALID, { "INVALID", 0, 0, 0, true, Tier::Zero } },
{ Instruction::SELFDESTRUCT, { "SELFDESTRUCT", 0, 1, 0, true, Tier::Special } }
};
InstructionInfo solidity::evmasm::instructionInfo(Instruction _inst) { "LT", InstructionOpCode::LT, 0, 2, 1, false, Tier::VeryLow },
{ "GT", InstructionOpCode::GT, 0, 2, 1, false, Tier::VeryLow },
{ "SLT", InstructionOpCode::SLT, 0, 2, 1, false, Tier::VeryLow },
{ "SGT", InstructionOpCode::SGT, 0, 2, 1, false, Tier::VeryLow },
{ "EQ", InstructionOpCode::EQ, 0, 2, 1, false, Tier::VeryLow },
{ "ISZERO", InstructionOpCode::ISZERO, 0, 1, 1, false, Tier::VeryLow },
{ "AND", InstructionOpCode::AND, 0, 2, 1, false, Tier::VeryLow },
{ "OR", InstructionOpCode::OR, 0, 2, 1, false, Tier::VeryLow },
{ "XOR", InstructionOpCode::XOR, 0, 2, 1, false, Tier::VeryLow },
{ "NOT", InstructionOpCode::NOT, 0, 1, 1, false, Tier::VeryLow },
{ "BYTE", InstructionOpCode::BYTE, 0, 2, 1, false, Tier::VeryLow },
{ "SHL", InstructionOpCode::SHL, 0, 2, 1, false, Tier::VeryLow },
{ "SHR", InstructionOpCode::SHR, 0, 2, 1, false, Tier::VeryLow },
{ "SAR", InstructionOpCode::SAR, 0, 2, 1, false, Tier::VeryLow },
{ "KECCAK256", InstructionOpCode::KECCAK256, 0, 2, 1, true, Tier::Special },
{ "ADDRESS", InstructionOpCode::ADDRESS, 0, 0, 1, false, Tier::Base },
{ "BALANCE", InstructionOpCode::BALANCE, 0, 1, 1, false, Tier::Balance },
{ "ORIGIN", InstructionOpCode::ORIGIN, 0, 0, 1, false, Tier::Base },
{ "CALLER", InstructionOpCode::CALLER, 0, 0, 1, false, Tier::Base },
{ "CALLVALUE", InstructionOpCode::CALLVALUE, 0, 0, 1, false, Tier::Base },
{ "CALLDATALOAD", InstructionOpCode::CALLDATALOAD, 0, 1, 1, false, Tier::VeryLow },
{ "CALLDATASIZE", InstructionOpCode::CALLDATASIZE, 0, 0, 1, false, Tier::Base },
{ "CALLDATACOPY", InstructionOpCode::CALLDATACOPY, 0, 3, 0, true, Tier::VeryLow },
{ "CODESIZE", InstructionOpCode::CODESIZE, 0, 0, 1, false, Tier::Base },
{ "CODECOPY", InstructionOpCode::CODECOPY, 0, 3, 0, true, Tier::VeryLow },
{ "GASPRICE", InstructionOpCode::GASPRICE, 0, 0, 1, false, Tier::Base },
{ "EXTCODESIZE", InstructionOpCode::EXTCODESIZE, 0, 1, 1, false, Tier::ExtCode },
{ "EXTCODECOPY", InstructionOpCode::EXTCODECOPY, 0, 4, 0, true, Tier::ExtCode },
{ "RETURNDATASIZE", InstructionOpCode::RETURNDATASIZE, 0, 0, 1, false, Tier::Base },
{ "RETURNDATACOPY", InstructionOpCode::RETURNDATACOPY, 0, 3, 0, true, Tier::VeryLow },
{ "EXTCODEHASH", InstructionOpCode::EXTCODEHASH, 0, 1, 1, false, Tier::Balance },
{ "BLOCKHASH", InstructionOpCode::BLOCKHASH, 0, 1, 1, false, Tier::Ext },
{ "COINBASE", InstructionOpCode::COINBASE, 0, 0, 1, false, Tier::Base },
{ "TIMESTAMP", InstructionOpCode::TIMESTAMP, 0, 0, 1, false, Tier::Base },
{ "NUMBER", InstructionOpCode::NUMBER, 0, 0, 1, false, Tier::Base },
{ "DIFFICULTY", InstructionOpCode::DIFFICULTY, 0, 0, 1, false, Tier::Base },
{ "PREVRANDAO", InstructionOpCode::PREVRANDAO, 0, 0, 1, false, Tier::Base },
{ "GASLIMIT", InstructionOpCode::GASLIMIT, 0, 0, 1, false, Tier::Base },
{ "CHAINID", InstructionOpCode::CHAINID, 0, 0, 1, false, Tier::Base },
{ "SELFBALANCE", InstructionOpCode::SELFBALANCE, 0, 0, 1, false, Tier::Low },
{ "BASEFEE", InstructionOpCode::BASEFEE, 0, 0, 1, false, Tier::Base },
{ "POP", InstructionOpCode::POP, 0, 1, 0, false, Tier::Base },
{ "MLOAD", InstructionOpCode::MLOAD, 0, 1, 1, true, Tier::VeryLow },
{ "MSTORE", InstructionOpCode::MSTORE, 0, 2, 0, true, Tier::VeryLow },
{ "MSTORE8", InstructionOpCode::MSTORE8, 0, 2, 0, true, Tier::VeryLow },
{ "SLOAD", InstructionOpCode::SLOAD, 0, 1, 1, false, Tier::Special },
{ "SSTORE", InstructionOpCode::SSTORE, 0, 2, 0, true, Tier::Special },
{ "JUMP", InstructionOpCode::JUMP, 0, 1, 0, true, Tier::Mid },
{ "JUMPI", InstructionOpCode::JUMPI, 0, 2, 0, true, Tier::High },
{ "PC", InstructionOpCode::PC, 0, 0, 1, false, Tier::Base },
{ "MSIZE", InstructionOpCode::MSIZE, 0, 0, 1, false, Tier::Base },
{ "GAS", InstructionOpCode::GAS, 0, 0, 1, false, Tier::Base },
{ "JUMPDEST", InstructionOpCode::JUMPDEST, 0, 0, 0, true, Tier::Special },
{ "PUSH1", InstructionOpCode::PUSH1, 1, 0, 1, false, Tier::VeryLow },
{ "PUSH2", InstructionOpCode::PUSH2, 2, 0, 1, false, Tier::VeryLow },
{ "PUSH3", InstructionOpCode::PUSH3, 3, 0, 1, false, Tier::VeryLow },
{ "PUSH4", InstructionOpCode::PUSH4, 4, 0, 1, false, Tier::VeryLow },
{ "PUSH5", InstructionOpCode::PUSH5, 5, 0, 1, false, Tier::VeryLow },
{ "PUSH6", InstructionOpCode::PUSH6, 6, 0, 1, false, Tier::VeryLow },
{ "PUSH7", InstructionOpCode::PUSH7, 7, 0, 1, false, Tier::VeryLow },
{ "PUSH8", InstructionOpCode::PUSH8, 8, 0, 1, false, Tier::VeryLow },
{ "PUSH9", InstructionOpCode::PUSH9, 9, 0, 1, false, Tier::VeryLow },
{ "PUSH10", InstructionOpCode::PUSH10, 10, 0, 1, false, Tier::VeryLow },
{ "PUSH11", InstructionOpCode::PUSH11, 11, 0, 1, false, Tier::VeryLow },
{ "PUSH12", InstructionOpCode::PUSH12, 12, 0, 1, false, Tier::VeryLow },
{ "PUSH13", InstructionOpCode::PUSH13, 13, 0, 1, false, Tier::VeryLow },
{ "PUSH14", InstructionOpCode::PUSH14, 14, 0, 1, false, Tier::VeryLow },
{ "PUSH15", InstructionOpCode::PUSH15, 15, 0, 1, false, Tier::VeryLow },
{ "PUSH16", InstructionOpCode::PUSH16, 16, 0, 1, false, Tier::VeryLow },
{ "PUSH17", InstructionOpCode::PUSH17, 17, 0, 1, false, Tier::VeryLow },
{ "PUSH18", InstructionOpCode::PUSH18, 18, 0, 1, false, Tier::VeryLow },
{ "PUSH19", InstructionOpCode::PUSH19, 19, 0, 1, false, Tier::VeryLow },
{ "PUSH20", InstructionOpCode::PUSH20, 20, 0, 1, false, Tier::VeryLow },
{ "PUSH21", InstructionOpCode::PUSH21, 21, 0, 1, false, Tier::VeryLow },
{ "PUSH22", InstructionOpCode::PUSH22, 22, 0, 1, false, Tier::VeryLow },
{ "PUSH23", InstructionOpCode::PUSH23, 23, 0, 1, false, Tier::VeryLow },
{ "PUSH24", InstructionOpCode::PUSH24, 24, 0, 1, false, Tier::VeryLow },
{ "PUSH25", InstructionOpCode::PUSH25, 25, 0, 1, false, Tier::VeryLow },
{ "PUSH26", InstructionOpCode::PUSH26, 26, 0, 1, false, Tier::VeryLow },
{ "PUSH27", InstructionOpCode::PUSH27, 27, 0, 1, false, Tier::VeryLow },
{ "PUSH28", InstructionOpCode::PUSH28, 28, 0, 1, false, Tier::VeryLow },
{ "PUSH29", InstructionOpCode::PUSH29, 29, 0, 1, false, Tier::VeryLow },
{ "PUSH30", InstructionOpCode::PUSH30, 30, 0, 1, false, Tier::VeryLow },
{ "PUSH31", InstructionOpCode::PUSH31, 31, 0, 1, false, Tier::VeryLow },
{ "PUSH32", InstructionOpCode::PUSH32, 32, 0, 1, false, Tier::VeryLow },
{ "DUP1", InstructionOpCode::DUP1, 0, 1, 2, false, Tier::VeryLow },
{ "DUP2", InstructionOpCode::DUP2, 0, 2, 3, false, Tier::VeryLow },
{ "DUP3", InstructionOpCode::DUP3, 0, 3, 4, false, Tier::VeryLow },
{ "DUP4", InstructionOpCode::DUP4, 0, 4, 5, false, Tier::VeryLow },
{ "DUP5", InstructionOpCode::DUP5, 0, 5, 6, false, Tier::VeryLow },
{ "DUP6", InstructionOpCode::DUP6, 0, 6, 7, false, Tier::VeryLow },
{ "DUP7", InstructionOpCode::DUP7, 0, 7, 8, false, Tier::VeryLow },
{ "DUP8", InstructionOpCode::DUP8, 0, 8, 9, false, Tier::VeryLow },
{ "DUP9", InstructionOpCode::DUP9, 0, 9, 10, false, Tier::VeryLow },
{ "DUP10", InstructionOpCode::DUP10, 0, 10, 11, false, Tier::VeryLow },
{ "DUP11", InstructionOpCode::DUP11, 0, 11, 12, false, Tier::VeryLow },
{ "DUP12", InstructionOpCode::DUP12, 0, 12, 13, false, Tier::VeryLow },
{ "DUP13", InstructionOpCode::DUP13, 0, 13, 14, false, Tier::VeryLow },
{ "DUP14", InstructionOpCode::DUP14, 0, 14, 15, false, Tier::VeryLow },
{ "DUP15", InstructionOpCode::DUP15, 0, 15, 16, false, Tier::VeryLow },
{ "DUP16", InstructionOpCode::DUP16, 0, 16, 17, false, Tier::VeryLow },
{ "SWAP1", InstructionOpCode::SWAP1, 0, 2, 2, false, Tier::VeryLow },
{ "SWAP2", InstructionOpCode::SWAP2, 0, 3, 3, false, Tier::VeryLow },
{ "SWAP3", InstructionOpCode::SWAP3, 0, 4, 4, false, Tier::VeryLow },
{ "SWAP4", InstructionOpCode::SWAP4, 0, 5, 5, false, Tier::VeryLow },
{ "SWAP5", InstructionOpCode::SWAP5, 0, 6, 6, false, Tier::VeryLow },
{ "SWAP6", InstructionOpCode::SWAP6, 0, 7, 7, false, Tier::VeryLow },
{ "SWAP7", InstructionOpCode::SWAP7, 0, 8, 8, false, Tier::VeryLow },
{ "SWAP8", InstructionOpCode::SWAP8, 0, 9, 9, false, Tier::VeryLow },
{ "SWAP9", InstructionOpCode::SWAP9, 0, 10, 10, false, Tier::VeryLow },
{ "SWAP10", InstructionOpCode::SWAP10, 0, 11, 11, false, Tier::VeryLow },
{ "SWAP11", InstructionOpCode::SWAP11, 0, 12, 12, false, Tier::VeryLow },
{ "SWAP12", InstructionOpCode::SWAP12, 0, 13, 13, false, Tier::VeryLow },
{ "SWAP13", InstructionOpCode::SWAP13, 0, 14, 14, false, Tier::VeryLow },
{ "SWAP14", InstructionOpCode::SWAP14, 0, 15, 15, false, Tier::VeryLow },
{ "SWAP15", InstructionOpCode::SWAP15, 0, 16, 16, false, Tier::VeryLow },
{ "SWAP16", InstructionOpCode::SWAP16, 0, 17, 17, false, Tier::VeryLow },
{ "LOG0", InstructionOpCode::LOG0, 0, 2, 0, true, Tier::Special },
{ "LOG1", InstructionOpCode::LOG1, 0, 3, 0, true, Tier::Special },
{ "LOG2", InstructionOpCode::LOG2, 0, 4, 0, true, Tier::Special },
{ "LOG3", InstructionOpCode::LOG3, 0, 5, 0, true, Tier::Special },
{ "LOG4", InstructionOpCode::LOG4, 0, 6, 0, true, Tier::Special },
{ "CREATE", InstructionOpCode::CREATE, 0, 3, 1, true, Tier::Special },
{ "CALL", InstructionOpCode::CALL, 0, 7, 1, true, Tier::Special },
{ "CALLCODE", InstructionOpCode::CALLCODE, 0, 7, 1, true, Tier::Special },
{ "RETURN", InstructionOpCode::RETURN, 0, 2, 0, true, Tier::Zero },
{ "DELEGATECALL", InstructionOpCode::DELEGATECALL, 0, 6, 1, true, Tier::Special },
{ "CREATE2", InstructionOpCode::CREATE2, 0, 4, 1, true, Tier::Special },
{ "STATICCALL", InstructionOpCode::STATICCALL, 0, 6, 1, true, Tier::Special },
{ "REVERT", InstructionOpCode::REVERT, 0, 2, 0, true, Tier::Zero },
{ "INVALID", InstructionOpCode::INVALID, 0, 0, 0, true, Tier::Zero },
{ "SELFDESTRUCT", InstructionOpCode::SELFDESTRUCT, 0, 1, 0, true, Tier::Special }
}};
InstructionInfo const& solidity::evmasm::instructionInfo(InternalInstruction _inst)
{ {
try try
{ {
return c_instructionInfo.at(_inst); return c_instructionInfo.at(static_cast<size_t>(_inst));
} }
catch (...) catch (...)
{ {
return InstructionInfo({"<INVALID_INSTRUCTION: " + to_string(static_cast<unsigned>(_inst)) + ">", 0, 0, 0, false, Tier::Invalid}); static InstructionInfo invalidInstruction = InstructionInfo({
"<INVALID_INTERNAL_INSTRUCTION: " + to_string(static_cast<unsigned>(_inst)) + ">",
InstructionOpCode::INVALID,
0,
0,
0,
false,
Tier::Invalid
});
return invalidInstruction;
} }
} }
bool solidity::evmasm::isValidInstruction(Instruction _inst) /// Get the Opcode of an instruction.
InstructionOpCode solidity::evmasm::instructionOpcode(InternalInstruction _inst)
{ {
return !!c_instructionInfo.count(_inst); return instructionInfo(_inst).opCode;
}
InternalInstruction solidity::evmasm::internalInstruction(InstructionOpCode _opcode, langutil::EVMVersion _evmVersion)
{
// Create cached table if not existing
if (opcode2InternalCache.empty())
for (size_t i = 0; i < c_instructionInfo.size(); i++)
if (c_instructionInfo[i].opCode == _opcode)
opcode2InternalCache.insert({_opcode, static_cast<InternalInstruction>(i)});
SetOnce<InternalInstruction> validInstruction{};
auto [start, end] = opcode2InternalCache.equal_range(_opcode);
// Check which instructions work for the given evm version
for (;start != end; start++)
if (_evmVersion.hasInstruction(start->second))
validInstruction = start->second;
return *validInstruction;
}
bool solidity::evmasm::isValidInstruction(InternalInstruction _inst)
{
return _inst < InternalInstruction::MAX_INTERNAL_INSTRUCTION;
} }

347
libevmasm/Instruction.h
View File

@ -26,11 +26,185 @@
#include <libsolutil/Common.h> #include <libsolutil/Common.h>
#include <libsolutil/Assertions.h> #include <libsolutil/Assertions.h>
#include <boost/operators.hpp>
namespace solidity::langutil
{
/**
* A version specifier of the EVM we want to compile to.
* Defaults to the latest version deployed on Ethereum Mainnet at the time of compiler release.
*/
class EVMVersion;
}
namespace solidity::evmasm namespace solidity::evmasm
{ {
/// Internal only enum of all instructions
enum class InternalInstruction: uint8_t
{
STOP = 0, ///< halts execution
ADD, ///< addition operation
MUL, ///< multiplication operation
SUB, ///< subtraction operation
DIV, ///< integer division operation
SDIV, ///< signed integer division operation
MOD, ///< modulo remainder operation
SMOD, ///< signed modulo remainder operation
ADDMOD, ///< unsigned modular addition
MULMOD, ///< unsigned modular multiplication
EXP, ///< exponential operation
SIGNEXTEND, ///< extend length of signed integer
LT, ///< less-than comparison
GT, ///< greater-than comparison
SLT, ///< signed less-than comparison
SGT, ///< signed greater-than comparison
EQ, ///< equality comparison
ISZERO, ///< simple not operator
AND, ///< bitwise AND operation
OR, ///< bitwise OR operation
XOR, ///< bitwise XOR operation
NOT, ///< bitwise NOT operation
BYTE, ///< retrieve single byte from word
SHL, ///< bitwise SHL operation
SHR, ///< bitwise SHR operation
SAR, ///< bitwise SAR operation
KECCAK256, ///< compute KECCAK-256 hash
ADDRESS, ///< get address of currently executing account
BALANCE, ///< get balance of the given account
ORIGIN, ///< get execution origination address
CALLER, ///< get caller address
CALLVALUE, ///< get deposited value by the instruction/transaction responsible for this execution
CALLDATALOAD, ///< get input data of current environment
CALLDATASIZE, ///< get size of input data in current environment
CALLDATACOPY, ///< copy input data in current environment to memory
CODESIZE, ///< get size of code running in current environment
CODECOPY, ///< copy code running in current environment to memory
GASPRICE, ///< get price of gas in current environment
EXTCODESIZE, ///< get external code size (from another contract)
EXTCODECOPY, ///< copy external code (from another contract)
RETURNDATASIZE, ///< get size of return data buffer
RETURNDATACOPY, ///< copy return data in current environment to memory
EXTCODEHASH, ///< get external code hash (from another contract)
BLOCKHASH, ///< get hash of most recent complete block
COINBASE, ///< get the block's coinbase address
TIMESTAMP, ///< get the block's timestamp
NUMBER, ///< get the block's number
DIFFICULTY, ///< get the block's difficulty
PREVRANDAO, ///< get randomness provided by the beacon chain
GASLIMIT, ///< get the block's gas limit
CHAINID, ///< get the config's chainid param
SELFBALANCE, ///< get balance of the current account
BASEFEE, ///< get the block's basefee
POP, ///< remove item from stack
MLOAD, ///< load word from memory
MSTORE, ///< save word to memory
MSTORE8, ///< save byte to memory
SLOAD, ///< load word from storage
SSTORE, ///< save word to storage
JUMP, ///< alter the program counter
JUMPI, ///< conditionally alter the program counter
PC, ///< get the program counter
MSIZE, ///< get the size of active memory
GAS, ///< get the amount of available gas
JUMPDEST, ///< set a potential jump destination
PUSH1, ///< place 1 byte item on stack
PUSH2, ///< place 2 byte item on stack
PUSH3, ///< place 3 byte item on stack
PUSH4, ///< place 4 byte item on stack
PUSH5, ///< place 5 byte item on stack
PUSH6, ///< place 6 byte item on stack
PUSH7, ///< place 7 byte item on stack
PUSH8, ///< place 8 byte item on stack
PUSH9, ///< place 9 byte item on stack
PUSH10, ///< place 10 byte item on stack
PUSH11, ///< place 11 byte item on stack
PUSH12, ///< place 12 byte item on stack
PUSH13, ///< place 13 byte item on stack
PUSH14, ///< place 14 byte item on stack
PUSH15, ///< place 15 byte item on stack
PUSH16, ///< place 16 byte item on stack
PUSH17, ///< place 17 byte item on stack
PUSH18, ///< place 18 byte item on stack
PUSH19, ///< place 19 byte item on stack
PUSH20, ///< place 20 byte item on stack
PUSH21, ///< place 21 byte item on stack
PUSH22, ///< place 22 byte item on stack
PUSH23, ///< place 23 byte item on stack
PUSH24, ///< place 24 byte item on stack
PUSH25, ///< place 25 byte item on stack
PUSH26, ///< place 26 byte item on stack
PUSH27, ///< place 27 byte item on stack
PUSH28, ///< place 28 byte item on stack
PUSH29, ///< place 29 byte item on stack
PUSH30, ///< place 30 byte item on stack
PUSH31, ///< place 31 byte item on stack
PUSH32, ///< place 32 byte item on stack
DUP1, ///< copies the highest item in the stack to the top of the stack
DUP2, ///< copies the second highest item in the stack to the top of the stack
DUP3, ///< copies the third highest item in the stack to the top of the stack
DUP4, ///< copies the 4th highest item in the stack to the top of the stack
DUP5, ///< copies the 5th highest item in the stack to the top of the stack
DUP6, ///< copies the 6th highest item in the stack to the top of the stack
DUP7, ///< copies the 7th highest item in the stack to the top of the stack
DUP8, ///< copies the 8th highest item in the stack to the top of the stack
DUP9, ///< copies the 9th highest item in the stack to the top of the stack
DUP10, ///< copies the 10th highest item in the stack to the top of the stack
DUP11, ///< copies the 11th highest item in the stack to the top of the stack
DUP12, ///< copies the 12th highest item in the stack to the top of the stack
DUP13, ///< copies the 13th highest item in the stack to the top of the stack
DUP14, ///< copies the 14th highest item in the stack to the top of the stack
DUP15, ///< copies the 15th highest item in the stack to the top of the stack
DUP16, ///< copies the 16th highest item in the stack to the top of the stack
SWAP1, ///< swaps the highest and second highest value on the stack
SWAP2, ///< swaps the highest and third highest value on the stack
SWAP3, ///< swaps the highest and 4th highest value on the stack
SWAP4, ///< swaps the highest and 5th highest value on the stack
SWAP5, ///< swaps the highest and 6th highest value on the stack
SWAP6, ///< swaps the highest and 7th highest value on the stack
SWAP7, ///< swaps the highest and 8th highest value on the stack
SWAP8, ///< swaps the highest and 9th highest value on the stack
SWAP9, ///< swaps the highest and 10th highest value on the stack
SWAP10, ///< swaps the highest and 11th highest value on the stack
SWAP11, ///< swaps the highest and 12th highest value on the stack
SWAP12, ///< swaps the highest and 13th highest value on the stack
SWAP13, ///< swaps the highest and 14th highest value on the stack
SWAP14, ///< swaps the highest and 15th highest value on the stack
SWAP15, ///< swaps the highest and 16th highest value on the stack
SWAP16, ///< swaps the highest and 17th highest value on the stack
LOG0, ///< Makes a log entry; no topics.
LOG1, ///< Makes a log entry; 1 topic.
LOG2, ///< Makes a log entry; 2 topics.
LOG3, ///< Makes a log entry; 3 topics.
LOG4, ///< Makes a log entry; 4 topics.
CREATE, ///< create a new account with associated code
CALL, ///< message-call into an account
CALLCODE, ///< message-call with another account's code only
RETURN, ///< halt execution returning output data
DELEGATECALL, ///< like CALLCODE but keeps caller's value and sender
CREATE2, ///< create new account with associated code at address `sha3(0xff + sender + salt + init code) % 2**160`
STATICCALL, ///< like CALL but disallow state modifications
REVERT, ///< halt execution, revert state and return output data
INVALID, ///< invalid instruction for expressing runtime errors (e.g., division-by-zero)
SELFDESTRUCT, ///< halt execution and register account for later deletion
///
MAX_INTERNAL_INSTRUCTION ///< Marker for largest internal instruction value
};
/// Virtual machine bytecode instruction. /// Virtual machine bytecode instruction.
enum class Instruction: uint8_t enum class InstructionOpCode: uint8_t
{ {
STOP = 0x00, ///< halts execution STOP = 0x00, ///< halts execution
ADD, ///< addition operation ADD, ///< addition operation
@ -189,82 +363,6 @@ enum class Instruction: uint8_t
SELFDESTRUCT = 0xff ///< halt execution and register account for later deletion SELFDESTRUCT = 0xff ///< halt execution and register account for later deletion
}; };
/// @returns true if the instruction is a PUSH
inline bool isPushInstruction(Instruction _inst)
{
return Instruction::PUSH1 <= _inst && _inst <= Instruction::PUSH32;
}
/// @returns true if the instruction is a DUP
inline bool isDupInstruction(Instruction _inst)
{
return Instruction::DUP1 <= _inst && _inst <= Instruction::DUP16;
}
/// @returns true if the instruction is a SWAP
inline bool isSwapInstruction(Instruction _inst)
{
return Instruction::SWAP1 <= _inst && _inst <= Instruction::SWAP16;
}
/// @returns true if the instruction is a LOG
inline bool isLogInstruction(Instruction _inst)
{
return Instruction::LOG0 <= _inst && _inst <= Instruction::LOG4;
}
/// @returns the number of PUSH Instruction _inst
inline unsigned getPushNumber(Instruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(Instruction::PUSH1) + 1;
}
/// @returns the number of DUP Instruction _inst
inline unsigned getDupNumber(Instruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(Instruction::DUP1) + 1;
}
/// @returns the number of SWAP Instruction _inst
inline unsigned getSwapNumber(Instruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(Instruction::SWAP1) + 1;
}
/// @returns the number of LOG Instruction _inst
inline unsigned getLogNumber(Instruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(Instruction::LOG0);
}
/// @returns the PUSH<_number> instruction
inline Instruction pushInstruction(unsigned _number)
{
assertThrow(1 <= _number && _number <= 32, InvalidOpcode, std::string("Invalid PUSH instruction requested (") + std::to_string(_number) + ").");
return Instruction(unsigned(Instruction::PUSH1) + _number - 1);
}
/// @returns the DUP<_number> instruction
inline Instruction dupInstruction(unsigned _number)
{
assertThrow(1 <= _number && _number <= 16, InvalidOpcode, std::string("Invalid DUP instruction requested (") + std::to_string(_number) + ").");
return Instruction(unsigned(Instruction::DUP1) + _number - 1);
}
/// @returns the SWAP<_number> instruction
inline Instruction swapInstruction(unsigned _number)
{
assertThrow(1 <= _number && _number <= 16, InvalidOpcode, std::string("Invalid SWAP instruction requested (") + std::to_string(_number) + ").");
return Instruction(unsigned(Instruction::SWAP1) + _number - 1);
}
/// @returns the LOG<_number> instruction
inline Instruction logInstruction(unsigned _number)
{
assertThrow(_number <= 4, InvalidOpcode, std::string("Invalid LOG instruction requested (") + std::to_string(_number) + ").");
return Instruction(unsigned(Instruction::LOG0) + _number);
}
enum class Tier enum class Tier
{ {
Zero = 0, // 0, Zero Zero = 0, // 0, Zero
@ -284,6 +382,7 @@ enum class Tier
struct InstructionInfo struct InstructionInfo
{ {
std::string name; ///< The name of the instruction. std::string name; ///< The name of the instruction.
InstructionOpCode opCode; ///< InternalInstruction OpCode
int additional; ///< Additional items required in memory for this instructions (only for PUSH). int additional; ///< Additional items required in memory for this instructions (only for PUSH).
int args; ///< Number of items required on the stack for this instruction (and, for the purposes of ret, the number taken from the stack). int args; ///< Number of items required on the stack for this instruction (and, for the purposes of ret, the number taken from the stack).
int ret; ///< Number of items placed (back) on the stack by this instruction, assuming args items were removed. int ret; ///< Number of items placed (back) on the stack by this instruction, assuming args items were removed.
@ -292,12 +391,98 @@ struct InstructionInfo
}; };
/// Information on all the instructions. /// Information on all the instructions.
InstructionInfo instructionInfo(Instruction _inst); InstructionInfo const& instructionInfo(InternalInstruction _inst);
/// Get the Opcode of an internal instruction.
InstructionOpCode instructionOpcode(InternalInstruction _inst);
/// Get internal instruction for a given opcode
InternalInstruction internalInstruction(InstructionOpCode _opcode, langutil::EVMVersion _evmVersion);
/// check whether instructions exists. /// check whether instructions exists.
bool isValidInstruction(Instruction _inst); bool isValidInstruction(InternalInstruction _inst);
/// Convert from string mnemonic to InternalInstruction type.
extern const std::map<std::string, InternalInstruction> c_instructions;
/// @returns true if the instruction is a PUSH
inline bool isPushInstruction(InternalInstruction _inst)
{
return InstructionOpCode::PUSH1 <= instructionOpcode(_inst) && instructionOpcode(_inst) <= InstructionOpCode::PUSH32;
}
/// @returns true if the instruction is a DUP
inline bool isDupInstruction(InternalInstruction _inst)
{
return InstructionOpCode::DUP1 <= instructionOpcode(_inst) && instructionOpcode(_inst) <= InstructionOpCode::DUP16;
}
/// @returns true if the instruction is a SWAP
inline bool isSwapInstruction(InternalInstruction _inst)
{
return InstructionOpCode::SWAP1 <= instructionOpcode(_inst) && instructionOpcode(_inst) <= InstructionOpCode::SWAP16;
}
/// @returns true if the instruction is a LOG
inline bool isLogInstruction(InternalInstruction _inst)
{
return InstructionOpCode::LOG0 <= instructionOpcode(_inst) && instructionOpcode(_inst) <= InstructionOpCode::LOG4;
}
/// @returns the number of PUSH InternalInstruction _inst
inline unsigned getPushNumber(InternalInstruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(InstructionOpCode::PUSH1) + 1;
}
/// @returns the number of DUP InternalInstruction _inst
inline unsigned getDupNumber(InternalInstruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(InstructionOpCode::DUP1) + 1;
}
/// @returns the number of SWAP InternalInstruction _inst
inline unsigned getSwapNumber(InternalInstruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(InstructionOpCode::SWAP1) + 1;
}
/// @returns the number of LOG InternalInstruction _inst
inline unsigned getLogNumber(InternalInstruction _inst)
{
return static_cast<uint8_t>(_inst) - unsigned(InstructionOpCode::LOG0);
}
/// @returns the PUSH<_number> instruction
inline InternalInstruction pushInstruction(unsigned _number)
{
assertThrow(1 <= _number && _number <= 32, InvalidOpcode, std::string("Invalid PUSH instruction requested (") + std::to_string(_number) + ").");
return InternalInstruction(unsigned(InternalInstruction::PUSH1) + _number - 1);
}
/// @returns the DUP<_number> instruction
inline InternalInstruction dupInstruction(unsigned _number)
{
assertThrow(1 <= _number && _number <= 16, InvalidOpcode, std::string("Invalid DUP instruction requested (") + std::to_string(_number) + ").");
return InternalInstruction(unsigned(InternalInstruction::DUP1) + _number - 1);
}
/// @returns the SWAP<_number> instruction
inline InternalInstruction swapInstruction(unsigned _number)
{
assertThrow(1 <= _number && _number <= 16, InvalidOpcode, std::string("Invalid SWAP instruction requested (") + std::to_string(_number) + ").");
return InternalInstruction(unsigned(InternalInstruction::SWAP1) + _number - 1);
}
/// @returns the LOG<_number> instruction
inline InternalInstruction logInstruction(unsigned _number)
{
assertThrow(_number <= 4, InvalidOpcode, std::string("Invalid LOG instruction requested (") + std::to_string(_number) + ").");
return InternalInstruction(unsigned(InternalInstruction::LOG0) + _number);
}
/// Convert from string mnemonic to Instruction type.
extern const std::map<std::string, Instruction> c_instructions;
} }

4
liblangutil/EVMVersion.cpp
View File

@ -48,6 +48,10 @@ bool EVMVersion::hasOpcode(Instruction _opcode) const
return hasSelfBalance(); return hasSelfBalance();
case Instruction::BASEFEE: case Instruction::BASEFEE:
return hasBaseFee(); return hasBaseFee();
case InternalInstruction::DIFFICULTY:
return hasDifficulty();
case InternalInstruction::PREVRANDAO:
return hasPrevRandao();
default: default:
return true; return true;
} }

2
liblangutil/EVMVersion.h
View File

@ -95,7 +95,7 @@ public:
bool hasPrevRandao() const { return *this >= paris(); } bool hasPrevRandao() const { return *this >= paris(); }
bool hasDifficulty() const { return *this < paris(); } bool hasDifficulty() const { return *this < paris(); }
bool hasOpcode(evmasm::Instruction _opcode) const; bool hasInstruction(evmasm::InternalInstruction _instruction) const;
/// Whether we have to retain the costs for the call opcode itself (false), /// Whether we have to retain the costs for the call opcode itself (false),
/// or whether we can just forward easily all remaining gas (true). /// or whether we can just forward easily all remaining gas (true).

7
libsolidity/interface/StandardCompiler.cpp
View File

@ -21,6 +21,7 @@
* Standard JSON compiler interface. * Standard JSON compiler interface.
*/ */
#include "libevmasm/Instruction.h"
#include <libsolidity/interface/StandardCompiler.h> #include <libsolidity/interface/StandardCompiler.h>
#include <libsolidity/interface/ImportRemapper.h> #include <libsolidity/interface/ImportRemapper.h>
@ -384,6 +385,7 @@ Json::Value collectEVMObject(
evmasm::LinkerObject const& _object, evmasm::LinkerObject const& _object,
string const* _sourceMap, string const* _sourceMap,
Json::Value _generatedSources, Json::Value _generatedSources,
EVMVersion _evmVersion,
bool _runtimeObject, bool _runtimeObject,
function<bool(string)> const& _artifactRequested function<bool(string)> const& _artifactRequested
) )
@ -392,7 +394,7 @@ Json::Value collectEVMObject(
if (_artifactRequested("object")) if (_artifactRequested("object"))
output["object"] = _object.toHex(); output["object"] = _object.toHex();
if (_artifactRequested("opcodes")) if (_artifactRequested("opcodes"))
output["opcodes"] = evmasm::disassemble(_object.bytecode); output["opcodes"] = evmasm::disassemble(_object.bytecode, _evmVersion);
if (_artifactRequested("sourceMap")) if (_artifactRequested("sourceMap"))
output["sourceMap"] = _sourceMap ? *_sourceMap : ""; output["sourceMap"] = _sourceMap ? *_sourceMap : "";
if (_artifactRequested("functionDebugData")) if (_artifactRequested("functionDebugData"))
@ -1314,6 +1316,7 @@ Json::Value StandardCompiler::compileSolidity(StandardCompiler::InputsAndSetting
compilerStack.object(contractName), compilerStack.object(contractName),
compilerStack.sourceMapping(contractName), compilerStack.sourceMapping(contractName),
compilerStack.generatedSources(contractName), compilerStack.generatedSources(contractName),
_inputsAndSettings.evmVersion,
false, false,
[&](string const& _element) { return isArtifactRequested( [&](string const& _element) { return isArtifactRequested(
_inputsAndSettings.outputSelection, _inputsAndSettings.outputSelection,
@ -1335,6 +1338,7 @@ Json::Value StandardCompiler::compileSolidity(StandardCompiler::InputsAndSetting
compilerStack.runtimeObject(contractName), compilerStack.runtimeObject(contractName),
compilerStack.runtimeSourceMapping(contractName), compilerStack.runtimeSourceMapping(contractName),
compilerStack.generatedSources(contractName, true), compilerStack.generatedSources(contractName, true),
_inputsAndSettings.evmVersion,
true, true,
[&](string const& _element) { return isArtifactRequested( [&](string const& _element) { return isArtifactRequested(
_inputsAndSettings.outputSelection, _inputsAndSettings.outputSelection,
@ -1476,6 +1480,7 @@ Json::Value StandardCompiler::compileYul(InputsAndSettings _inputsAndSettings)
*o.bytecode, *o.bytecode,
o.sourceMappings.get(), o.sourceMappings.get(),
Json::arrayValue, Json::arrayValue,
_inputsAndSettings.evmVersion,
isDeployed, isDeployed,
[&, kind = kind](string const& _element) { return isArtifactRequested( [&, kind = kind](string const& _element) { return isArtifactRequested(
_inputsAndSettings.outputSelection, _inputsAndSettings.outputSelection,

73
libyul/AsmAnalysis.cpp
View File

@ -19,6 +19,7 @@
* Analyzer part of inline assembly. * Analyzer part of inline assembly.
*/ */
#include "libevmasm/Instruction.h"
#include <libyul/AsmAnalysis.h> #include <libyul/AsmAnalysis.h>
#include <libyul/AST.h> #include <libyul/AST.h>
@ -308,31 +309,48 @@ vector<YulString> AsmAnalyzer::operator()(FunctionCall const& _funCall)
vector<YulString> const* returnTypes = nullptr; vector<YulString> const* returnTypes = nullptr;
vector<optional<LiteralKind>> const* literalArguments = nullptr; vector<optional<LiteralKind>> const* literalArguments = nullptr;
if (BuiltinFunction const* f = m_dialect.builtin(_funCall.functionName.name)) auto inScope = [&](YulString const& _function)
{ {
parameterTypes = &f->parameters; return m_currentScope->lookup(_function, GenericVisitor{
returnTypes = &f->returns; [&](Scope::Variable const&)
if (!f->literalArguments.empty()) {
literalArguments = &f->literalArguments; m_errorReporter.typeError(
4202_error,
nativeLocationOf(_funCall.functionName),
"Attempt to call variable instead of function."
);
},
[&](Scope::Function const& _fun)
{
parameterTypes = &_fun.arguments;
returnTypes = &_fun.returns;
}
});
};
// TODO remove this in 0.9.0. We allow creating functions or identifiers in Yul with the name
// prevrandao for VMs before paris.
auto prevrandaoInScopeException = [&](YulString const& _instrName) -> bool
{
return _instrName.str() == "prevrandao"
&& m_evmVersion < langutil::EVMVersion::paris()
&& inScope(_instrName);
};
YulString const& functionName = _funCall.functionName.name;
BuiltinFunction const* builtinFunction = m_dialect.builtin(functionName);
if (builtinFunction && !prevrandaoInScopeException(functionName))
{
parameterTypes = &builtinFunction->parameters;
returnTypes = &builtinFunction->returns;
if (!builtinFunction->literalArguments.empty())
literalArguments = &builtinFunction->literalArguments;
validateInstructions(_funCall); validateInstructions(_funCall);
m_sideEffects += f->sideEffects; m_sideEffects += builtinFunction->sideEffects;
} }
else if (m_currentScope->lookup(_funCall.functionName.name, GenericVisitor{ else if (inScope(functionName))
[&](Scope::Variable const&)
{
m_errorReporter.typeError(
4202_error,
nativeLocationOf(_funCall.functionName),
"Attempt to call variable instead of function."
);
},
[&](Scope::Function const& _fun)
{
parameterTypes = &_fun.arguments;
returnTypes = &_fun.returns;
}
}))
{ {
if (m_resolver) if (m_resolver)
// We found a local reference, make sure there is no external reference. // We found a local reference, make sure there is no external reference.
@ -745,6 +763,19 @@ bool AsmAnalyzer::validateInstructions(evmasm::Instruction _instr, SourceLocatio
"PC instruction is a low-level EVM feature. " "PC instruction is a low-level EVM feature. "
"Because of that PC is disallowed in strict assembly." "Because of that PC is disallowed in strict assembly."
); );
else if (_instr == evmasm::InternalInstruction::PREVRANDAO && !m_evmVersion.hasPrevRandao())
m_errorReporter.warning(
5761_error,
_location,
"\"prevrandao\" is not supported by the VM version and will be treated like \"difficulty\"."
);
else if (_instr == evmasm::InternalInstruction::DIFFICULTY && !m_evmVersion.hasDifficulty())
m_errorReporter.warning(
3242_error,
_location,
"\"difficulty\" was renamed and supplanted by \"prevrandao\" in the VM version paris."
);
return returnValue; return returnValue;
} }

30
libyul/backends/evm/EVMDialect.cpp
View File

@ -120,7 +120,7 @@ set<YulString> createReservedIdentifiers(langutil::EVMVersion _evmVersion)
}; };
// TODO remove this in 0.9.0. We allow creating functions or identifiers in Yul with the name // TODO remove this in 0.9.0. We allow creating functions or identifiers in Yul with the name
// prevrandao for VMs before paris. // prevrandao for VMs before paris.
auto prevRandAOException = [&](string const& _instrName) -> bool auto prevRandaoException = [&](string const& _instrName) -> bool
{ {
// Using string comparison as the opcode is the same as for "difficulty" // Using string comparison as the opcode is the same as for "difficulty"
return _instrName == "prevrandao" && _evmVersion < langutil::EVMVersion::paris(); return _instrName == "prevrandao" && _evmVersion < langutil::EVMVersion::paris();
@ -130,7 +130,7 @@ set<YulString> createReservedIdentifiers(langutil::EVMVersion _evmVersion)
for (auto const& instr: evmasm::c_instructions) for (auto const& instr: evmasm::c_instructions)
{ {
string name = toLower(instr.first); string name = toLower(instr.first);
if (!baseFeeException(instr.second) && !prevRandAOException(name)) if (!baseFeeException(instr.second) && !prevRandaoException(name))
reserved.emplace(name); reserved.emplace(name);
} }
reserved += vector<YulString>{ reserved += vector<YulString>{
@ -146,22 +146,20 @@ set<YulString> createReservedIdentifiers(langutil::EVMVersion _evmVersion)
map<YulString, BuiltinFunctionForEVM> createBuiltins(langutil::EVMVersion _evmVersion, bool _objectAccess) map<YulString, BuiltinFunctionForEVM> createBuiltins(langutil::EVMVersion _evmVersion, bool _objectAccess)
{ {
/*auto hasOpCode = [&](evmasm::Instruction _instr, string const& _instrName) -> bool
{
if (
_instr == evmasm::Instruction::PREVRANDAO &&
_instrName == "prevrandao"
)
return _evmVersion.hasPrevRandao();
return _evmVersion.hasOpcode(_instr);
};*/
map<YulString, BuiltinFunctionForEVM> builtins; map<YulString, BuiltinFunctionForEVM> builtins;
for (auto const& instr: evmasm::c_instructions) for (auto const& instr: evmasm::c_instructions)
{ {
string name = toLower(instr.first); string name = toLower(instr.first);
auto const opcode = instr.second; auto instruction = instr.second;
// Replace PREVRANDAO/DIFFICULTY instructions based on availability in evm version,
// but keep the function name the same so both can be used.
// This effectively creates an alias between prevrandao <-> difficulty.
// TODO remove in 0.9.0
if (instruction == evmasm::InternalInstruction::DIFFICULTY && _evmVersion.hasPrevRandao())
instruction = evmasm::InternalInstruction::PREVRANDAO;
else if (instruction == evmasm::InternalInstruction::PREVRANDAO && !_evmVersion.hasPrevRandao())
instruction = evmasm::InternalInstruction::DIFFICULTY;
if ( if (
!evmasm::isDupInstruction(opcode) && !evmasm::isDupInstruction(opcode) &&
@ -170,9 +168,9 @@ map<YulString, BuiltinFunctionForEVM> createBuiltins(langutil::EVMVersion _evmVe
opcode != evmasm::Instruction::JUMP && opcode != evmasm::Instruction::JUMP &&
opcode != evmasm::Instruction::JUMPI && opcode != evmasm::Instruction::JUMPI &&
opcode != evmasm::Instruction::JUMPDEST && opcode != evmasm::Instruction::JUMPDEST &&
_evmVersion.hasOpcode(opcode) _evmVersion.hasInstruction(instruction)
) )
builtins.emplace(createEVMFunction(name, opcode)); builtins.emplace(createEVMFunction(name, instruction));
} }
if (_objectAccess) if (_objectAccess)

6
solc/CommandLineInterface.cpp
View File

@ -189,11 +189,11 @@ void CommandLineInterface::handleOpcode(string const& _contract)
solAssert(m_options.input.mode == InputMode::Compiler || m_options.input.mode == InputMode::CompilerWithASTImport, ""); solAssert(m_options.input.mode == InputMode::Compiler || m_options.input.mode == InputMode::CompilerWithASTImport, "");
if (!m_options.output.dir.empty()) if (!m_options.output.dir.empty())
createFile(m_compiler->filesystemFriendlyName(_contract) + ".opcode", evmasm::disassemble(m_compiler->object(_contract).bytecode)); createFile(m_compiler->filesystemFriendlyName(_contract) + ".opcode", evmasm::disassemble(m_compiler->object(_contract).bytecode, m_options.output.evmVersion));
else else
{ {
sout() << "Opcodes:" << endl; sout() << "Opcodes:" << endl;
sout() << std::uppercase << evmasm::disassemble(m_compiler->object(_contract).bytecode); sout() << std::uppercase << evmasm::disassemble(m_compiler->object(_contract).bytecode, m_options.output.evmVersion);
sout() << endl; sout() << endl;
} }
} }
@ -813,7 +813,7 @@ void CommandLineInterface::handleCombinedJSON()
if (m_options.compiler.combinedJsonRequests->binaryRuntime && m_compiler->compilationSuccessful()) if (m_options.compiler.combinedJsonRequests->binaryRuntime && m_compiler->compilationSuccessful())
contractData[g_strBinaryRuntime] = m_compiler->runtimeObject(contractName).toHex(); contractData[g_strBinaryRuntime] = m_compiler->runtimeObject(contractName).toHex();
if (m_options.compiler.combinedJsonRequests->opcodes && m_compiler->compilationSuccessful()) if (m_options.compiler.combinedJsonRequests->opcodes && m_compiler->compilationSuccessful())
contractData[g_strOpcodes] = evmasm::disassemble(m_compiler->object(contractName).bytecode); contractData[g_strOpcodes] = evmasm::disassemble(m_compiler->object(contractName).bytecode, m_options.output.evmVersion);
if (m_options.compiler.combinedJsonRequests->asm_ && m_compiler->compilationSuccessful()) if (m_options.compiler.combinedJsonRequests->asm_ && m_compiler->compilationSuccessful())
contractData[g_strAsm] = m_compiler->assemblyJSON(contractName); contractData[g_strAsm] = m_compiler->assemblyJSON(contractName);
if (m_options.compiler.combinedJsonRequests->storageLayout && m_compiler->compilationSuccessful()) if (m_options.compiler.combinedJsonRequests->storageLayout && m_compiler->compilationSuccessful())

8
test/libevmasm/Assembler.cpp
View File

@ -270,13 +270,13 @@ BOOST_AUTO_TEST_CASE(immutables_and_its_source_maps)
auto const numberOfMappings = std::count(sourceMappings.begin(), sourceMappings.end(), ';'); auto const numberOfMappings = std::count(sourceMappings.begin(), sourceMappings.end(), ';');
LinkerObject const& obj = assembly.assemble(); LinkerObject const& obj = assembly.assemble();
string const disassembly = disassemble(obj.bytecode, "\n"); string const disassembly = disassemble(obj.bytecode, EVMVersion(), "\n");
auto const numberOfOpcodes = std::count(disassembly.begin(), disassembly.end(), '\n'); auto const numberOfOpcodes = std::count(disassembly.begin(), disassembly.end(), '\n');
#if 0 // {{{ debug prints #if 0 // {{{ debug prints
{ {
LinkerObject const& subObj = assembly.sub(0).assemble(); LinkerObject const& subObj = assembly.sub(0).assemble();
string const subDisassembly = disassemble(subObj.bytecode, "\n"); string const subDisassembly = disassemble(subObj.bytecode, EVMVersion(), "\n");
cout << '\n'; cout << '\n';
cout << "### immutables: " << numImmutables << ", refs: " << numActualRefs << '\n'; cout << "### immutables: " << numImmutables << ", refs: " << numActualRefs << '\n';
cout << " - srcmap: \"" << sourceMappings << "\"\n"; cout << " - srcmap: \"" << sourceMappings << "\"\n";
@ -285,8 +285,8 @@ BOOST_AUTO_TEST_CASE(immutables_and_its_source_maps)
cout << " - subs: " << assembly.numSubs() << '\n'; cout << " - subs: " << assembly.numSubs() << '\n';
cout << " - sub opcodes " << std::count(subDisassembly.begin(), subDisassembly.end(), '\n') << '\n'; cout << " - sub opcodes " << std::count(subDisassembly.begin(), subDisassembly.end(), '\n') << '\n';
cout << " - sub srcmaps " << AssemblyItem::computeSourceMapping(subAsm->items(), indices) << '\n'; cout << " - sub srcmaps " << AssemblyItem::computeSourceMapping(subAsm->items(), indices) << '\n';
cout << " - main bytecode:\n\t" << disassemble(obj.bytecode, "\n\t"); cout << " - main bytecode:\n\t" << disassemble(obj.bytecode, EVMVersion(), "\n\t");
cout << "\r - sub bytecode:\n\t" << disassemble(subObj.bytecode, "\n\t"); cout << "\r - sub bytecode:\n\t" << disassemble(subObj.bytecode, EVMVersion(), "\n\t");
} }
#endif // }}} #endif // }}}

2
test/libyul/ObjectCompilerTest.cpp
View File

@ -100,7 +100,7 @@ TestCase::TestResult ObjectCompilerTest::run(ostream& _stream, string const& _li
"Bytecode: " + "Bytecode: " +
util::toHex(obj.bytecode->bytecode) + util::toHex(obj.bytecode->bytecode) +
"\nOpcodes: " + "\nOpcodes: " +
boost::trim_copy(evmasm::disassemble(obj.bytecode->bytecode)) + boost::trim_copy(evmasm::disassemble(obj.bytecode->bytecode, EVMVersion())) +
"\nSourceMappings:" + "\nSourceMappings:" +
(obj.sourceMappings->empty() ? "" : " " + *obj.sourceMappings) + (obj.sourceMappings->empty() ? "" : " " + *obj.sourceMappings) +
"\n"; "\n";