EVMHost: Introduce gas metering for precompiles

This commit is contained in:
Alex Beregszaszi 2021-03-10 22:13:28 +00:00
parent 2cc6610e40
commit 18a5aee38c
2 changed files with 316 additions and 110 deletions

View File

@ -223,11 +223,26 @@ evmc::result EVMHost::call(evmc_message const& _message) noexcept
else if (_message.destination == 0x0000000000000000000000000000000000000005_address && m_evmVersion >= langutil::EVMVersion::byzantium())
return precompileModExp(_message);
else if (_message.destination == 0x0000000000000000000000000000000000000006_address && m_evmVersion >= langutil::EVMVersion::byzantium())
return precompileALTBN128G1Add(_message);
{
if (m_evmVersion <= langutil::EVMVersion::istanbul())
return precompileALTBN128G1Add<EVMC_ISTANBUL>(_message);
else
return precompileALTBN128G1Add<EVMC_LONDON>(_message);
}
else if (_message.destination == 0x0000000000000000000000000000000000000007_address && m_evmVersion >= langutil::EVMVersion::byzantium())
return precompileALTBN128G1Mul(_message);
{
if (m_evmVersion <= langutil::EVMVersion::istanbul())
return precompileALTBN128G1Mul<EVMC_ISTANBUL>(_message);
else
return precompileALTBN128G1Mul<EVMC_LONDON>(_message);
}
else if (_message.destination == 0x0000000000000000000000000000000000000008_address && m_evmVersion >= langutil::EVMVersion::byzantium())
return precompileALTBN128PairingProduct(_message);
{
if (m_evmVersion <= langutil::EVMVersion::istanbul())
return precompileALTBN128PairingProduct<EVMC_ISTANBUL>(_message);
else
return precompileALTBN128PairingProduct<EVMC_LONDON>(_message);
}
auto const stateBackup = accounts;
@ -401,7 +416,11 @@ evmc::bytes32 EVMHost::convertToEVMC(h256 const& _data)
evmc::result EVMHost::precompileECRecover(evmc_message const& _message) noexcept
{
// NOTE this is a partial implementation for some inputs.
static map<bytes, bytes> const inputOutput{
// Fixed cost of 3000 gas.
constexpr int64_t gas_cost = 3000;
static map<bytes, EVMPrecompileOutput> const inputOutput{
{
fromHex(
"18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c"
@ -409,7 +428,10 @@ evmc::result EVMHost::precompileECRecover(evmc_message const& _message) noexcept
"73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f"
"eeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549"
),
fromHex("000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b")
{
fromHex("000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b"),
gas_cost
}
},
{
fromHex(
@ -418,15 +440,19 @@ evmc::result EVMHost::precompileECRecover(evmc_message const& _message) noexcept
"debaaa0cddb321b2dcaaf846d39605de7b97e77ba6106587855b9106cb104215"
"61a22d94fa8b8a687ff9c911c844d1c016d1a685a9166858f9c7c1bc85128aca"
),
fromHex("0000000000000000000000008743523d96a1b2cbe0c6909653a56da18ed484af")
{
fromHex("0000000000000000000000008743523d96a1b2cbe0c6909653a56da18ed484af"),
gas_cost
}
}
};
evmc::result result = precompileGeneric(_message, inputOutput);
// ECRecover will return success with empty response in case of failure
if (result.status_code != EVMC_SUCCESS)
if (result.status_code != EVMC_SUCCESS && result.status_code != EVMC_OUT_OF_GAS)
// return resultWithGas(_message.gas, gas_cost, {});
{
result.status_code = EVMC_SUCCESS;
result.gas_left = _message.gas;
result.gas_left = _message.gas - gas_cost;
result.output_data = {};
result.output_size = 0;
}
@ -442,32 +468,56 @@ evmc::result EVMHost::precompileSha256(evmc_message const& _message) noexcept
_message.input_data + _message.input_size
));
return resultWithGas(_message, hash);
// Base 60 gas + 12 gas / word.
int64_t gas_cost = 60 + 12 * ((static_cast<int64_t>(_message.input_size) + 31) / 32);
return resultWithGas(_message.gas, gas_cost, hash);
}
evmc::result EVMHost::precompileRipeMD160(evmc_message const& _message) noexcept
{
// NOTE this is a partial implementation for some inputs.
static map<bytes, bytes> const inputOutput{
// Base 600 gas + 120 gas / word.
constexpr auto calc_cost = [](int64_t size) -> int64_t {
return 600 + 120 * ((size + 31) / 32);
};
static map<bytes, EVMPrecompileOutput> const inputOutput{
{
bytes{},
fromHex("0000000000000000000000009c1185a5c5e9fc54612808977ee8f548b2258d31")
{
fromHex("0000000000000000000000009c1185a5c5e9fc54612808977ee8f548b2258d31"),
calc_cost(0)
}
},
{
fromHex("0000000000000000000000000000000000000000000000000000000000000004"),
fromHex("0000000000000000000000001b0f3c404d12075c68c938f9f60ebea4f74941a0")
{
fromHex("0000000000000000000000001b0f3c404d12075c68c938f9f60ebea4f74941a0"),
calc_cost(32)
}
},
{
fromHex("0000000000000000000000000000000000000000000000000000000000000005"),
fromHex("000000000000000000000000ee54aa84fc32d8fed5a5fe160442ae84626829d9")
{
fromHex("000000000000000000000000ee54aa84fc32d8fed5a5fe160442ae84626829d9"),
calc_cost(32)
}
},
{
fromHex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
fromHex("0000000000000000000000001cf4e77f5966e13e109703cd8a0df7ceda7f3dc3")
{
fromHex("0000000000000000000000001cf4e77f5966e13e109703cd8a0df7ceda7f3dc3"),
calc_cost(32)
}
},
{
fromHex("0000000000000000000000000000000000000000000000000000000000000000"),
fromHex("000000000000000000000000f93175303eba2a7b372174fc9330237f5ad202fc")
{
fromHex("000000000000000000000000f93175303eba2a7b372174fc9330237f5ad202fc"),
calc_cost(32)
}
},
{
fromHex(
@ -476,7 +526,10 @@ evmc::result EVMHost::precompileRipeMD160(evmc_message const& _message) noexcept
"0000000400000000000000000000000000000000000000000000000000000000"
"00000100"
),
fromHex("000000000000000000000000f93175303eba2a7b372174fc9330237f5ad202fc")
{
fromHex("000000000000000000000000f93175303eba2a7b372174fc9330237f5ad202fc"),
calc_cost(100)
}
},
{
fromHex(
@ -485,7 +538,10 @@ evmc::result EVMHost::precompileRipeMD160(evmc_message const& _message) noexcept
"0000000500000000000000000000000000000000000000000000000000000000"
"00000100"
),
fromHex("0000000000000000000000004f4fc112e2bfbe0d38f896a46629e08e2fcfad5")
{
fromHex("0000000000000000000000004f4fc112e2bfbe0d38f896a46629e08e2fcfad5"),
calc_cost(100)
}
},
{
fromHex(
@ -494,18 +550,27 @@ evmc::result EVMHost::precompileRipeMD160(evmc_message const& _message) noexcept
"ffffffff00000000000000000000000000000000000000000000000000000000"
"00000100"
),
fromHex("000000000000000000000000c0a2e4b1f3ff766a9a0089e7a410391730872495")
{
fromHex("000000000000000000000000c0a2e4b1f3ff766a9a0089e7a410391730872495"),
calc_cost(100)
}
},
{
fromHex(
"6162636465666768696a6b6c6d6e6f707172737475767778797a414243444546"
"4748494a4b4c4d4e4f505152535455565758595a303132333435363738393f21"
),
fromHex("00000000000000000000000036c6b90a49e17d4c1e1b0e634ec74124d9b207da")
{
fromHex("00000000000000000000000036c6b90a49e17d4c1e1b0e634ec74124d9b207da"),
calc_cost(64)
}
},
{
fromHex("6162636465666768696a6b6c6d6e6f707172737475767778797a414243444546"),
fromHex("000000000000000000000000ac5ab22e07b0fb80c69b6207902f725e2507e546")
{
fromHex("000000000000000000000000ac5ab22e07b0fb80c69b6207902f725e2507e546"),
calc_cost(32)
}
}
};
return precompileGeneric(_message, inputOutput);
@ -517,7 +582,10 @@ evmc::result EVMHost::precompileIdentity(evmc_message const& _message) noexcept
bytes static data;
data = bytes(_message.input_data, _message.input_data + _message.input_size);
return resultWithGas(_message, data);
// Base 15 gas + 3 gas / word.
int64_t gas_cost = 15 + 3 * ((static_cast<int64_t>(_message.input_size) + 31) / 32);
return resultWithGas(_message.gas, gas_cost, data);
}
evmc::result EVMHost::precompileModExp(evmc_message const&) noexcept
@ -526,11 +594,15 @@ evmc::result EVMHost::precompileModExp(evmc_message const&) noexcept
return resultWithFailure();
}
template <evmc_revision Revision>
evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noexcept
{
// NOTE this is a partial implementation for some inputs.
static map<bytes, bytes> const inputOutput{
// Fixed 500 or 150 gas.
int64_t gas_cost = (Revision < EVMC_ISTANBUL) ? 500 : 150;
static map<bytes, EVMPrecompileOutput> const inputOutput{
{
fromHex(
"0000000000000000000000000000000000000000000000000000000000000000"
@ -540,10 +612,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"1385281136ff5b2c326807ff0a824b6ca4f21fcc7c8764e9801bc4ad497d5012"
"02254594be8473dcf018a2aa66ea301e38fc865823acf75a9901721d1fc6bf4c"
)
{
fromHex(
"1385281136ff5b2c326807ff0a824b6ca4f21fcc7c8764e9801bc4ad497d5012"
"02254594be8473dcf018a2aa66ea301e38fc865823acf75a9901721d1fc6bf4c"
),
gas_cost
}
},
{
fromHex(
@ -554,10 +629,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"030644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd3"
"15ed738c0e0a7c92e7845f96b2ae9c0a68a6a449e3538fc7ff3ebf7a5a18a2c4"
)
{
fromHex(
"030644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd3"
"15ed738c0e0a7c92e7845f96b2ae9c0a68a6a449e3538fc7ff3ebf7a5a18a2c4"
),
gas_cost
}
},
{
fromHex(
@ -568,10 +646,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
)
{
fromHex(
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
gas_cost
}
},
{
fromHex(
@ -582,10 +663,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"16aed5ed486df6b2fb38015ded41400009ed4f34bef65b87b1f90f47052f8d94"
"16dabf21b3f25b9665269d98dc17b1da6118251dc0b403ae50e96dfe91239375"
)
{
fromHex(
"16aed5ed486df6b2fb38015ded41400009ed4f34bef65b87b1f90f47052f8d94"
"16dabf21b3f25b9665269d98dc17b1da6118251dc0b403ae50e96dfe91239375"
),
gas_cost
}
},
{
fromHex(
@ -596,10 +680,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"1e018816fc9bbd91313301ae9c254bb7d64d6cd54f3b49b92925e43e256b5faa"
"1d1f2259c715327bedb42c095af6c0267e4e1be836b4e04b3f0502552f93cca9"
)
{
fromHex(
"1e018816fc9bbd91313301ae9c254bb7d64d6cd54f3b49b92925e43e256b5faa"
"1d1f2259c715327bedb42c095af6c0267e4e1be836b4e04b3f0502552f93cca9"
),
gas_cost
}
},
{
fromHex(
@ -610,10 +697,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"29d160febeef9770d47a32ee3b763850eb0594844fa57dd31b8ed02c78fdb797"
"2c7cdf62c2498486fd52646e577a06723ce97737b3c958262d78c4a413661e8a"
),
{
fromHex(
"29d160febeef9770d47a32ee3b763850eb0594844fa57dd31b8ed02c78fdb797"
"2c7cdf62c2498486fd52646e577a06723ce97737b3c958262d78c4a413661e8a"
),
gas_cost
}
},
{
fromHex(
@ -624,10 +714,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"2583ed10e418133e44619c336f1be5ddae9e20d634a7683d9661401c750d7df4"
"0185fbba22de9e698262925665735dbc4d6e8288bc3fc39fae10ca58e16e77f7"
)
{
fromHex(
"2583ed10e418133e44619c336f1be5ddae9e20d634a7683d9661401c750d7df4"
"0185fbba22de9e698262925665735dbc4d6e8288bc3fc39fae10ca58e16e77f7"
),
gas_cost
}
},
{
fromHex(
@ -638,10 +731,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"1496064626ba8bffeb7805f0d16143a65649bb0850333ea512c03fcdaf31e254"
"07b4f210ab542533f1ee5633ae4406cd16c63494b537ce3f1cf4afff6f76a48f"
),
{
fromHex(
"1496064626ba8bffeb7805f0d16143a65649bb0850333ea512c03fcdaf31e254"
"07b4f210ab542533f1ee5633ae4406cd16c63494b537ce3f1cf4afff6f76a48f"
),
gas_cost
}
},
{
fromHex(
@ -652,10 +748,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"2801b21090cbc48409e352647f3857134d373f81741f9d5e3d432f336d76f517"
"13cf106acf943c2a331de21c7d5e3351354e7412f2dba2918483a6593a6828d4"
)
{
fromHex(
"2801b21090cbc48409e352647f3857134d373f81741f9d5e3d432f336d76f517"
"13cf106acf943c2a331de21c7d5e3351354e7412f2dba2918483a6593a6828d4"
),
gas_cost
}
},
{
fromHex(
@ -666,10 +765,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"10b4876441e14a6be92a7fe66550848c01c676a12ac31d7cc13b21f49c4307c8"
"09f5528bdb0ef9354837a0f4b4c9da973bd5b805d359976f719ab0b74e0a7368"
)
{
fromHex(
"10b4876441e14a6be92a7fe66550848c01c676a12ac31d7cc13b21f49c4307c8"
"09f5528bdb0ef9354837a0f4b4c9da973bd5b805d359976f719ab0b74e0a7368"
),
gas_cost
}
},
{
fromHex(
@ -680,10 +782,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"186bac5188a98c45e6016873d107f5cd131f3a3e339d0375e58bd6219347b008"
"1e396bc242de0214898b0f68035f53ad5a6f96c6c8390ac56ed6ec9561d23159"
)
{
fromHex(
"186bac5188a98c45e6016873d107f5cd131f3a3e339d0375e58bd6219347b008"
"1e396bc242de0214898b0f68035f53ad5a6f96c6c8390ac56ed6ec9561d23159"
),
gas_cost
}
},
{
fromHex(
@ -694,10 +799,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"20a754d2071d4d53903e3b31a7e98ad6882d58aec240ef981fdf0a9d22c5926a"
"29c853fcea789887315916bbeb89ca37edb355b4f980c9a12a94f30deeed3021"
)
{
fromHex(
"20a754d2071d4d53903e3b31a7e98ad6882d58aec240ef981fdf0a9d22c5926a"
"29c853fcea789887315916bbeb89ca37edb355b4f980c9a12a94f30deeed3021"
),
gas_cost
}
},
{
fromHex(
@ -708,10 +816,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"18014701594179c6b9ccae848e3d15c1f76f8a68b8092578296520e46c9bae0c"
"1b5ed0e9e8f3ff35589ea81a45cf63887d4a92c099a3be1d97b26f0db96323dd"
),
{
fromHex(
"18014701594179c6b9ccae848e3d15c1f76f8a68b8092578296520e46c9bae0c"
"1b5ed0e9e8f3ff35589ea81a45cf63887d4a92c099a3be1d97b26f0db96323dd"
),
gas_cost
}
},
{
fromHex(
@ -722,10 +833,13 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"27231d5cdd0011259ff75678cf5a8f7840c22cb71d52b25e21e071205e8d9bc4"
"26dd3d225c9a71476db0cf834232eba84020f3073c6d20c519963e0b98f235e1"
)
{
fromHex(
"27231d5cdd0011259ff75678cf5a8f7840c22cb71d52b25e21e071205e8d9bc4"
"26dd3d225c9a71476db0cf834232eba84020f3073c6d20c519963e0b98f235e1"
),
gas_cost
}
},
{
fromHex(
@ -736,71 +850,121 @@ evmc::result EVMHost::precompileALTBN128G1Add(evmc_message const& _message) noex
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
),
fromHex(
"26dcfbc2e0bc9d82efb4acd73cb3e99730e27e10177fcfb78b6399a4bfcdf391"
"27c440dbd5053253a3a692f9bf89b9b6e9612127cf97db1e11ffa9679acc933b"
)
{
fromHex(
"26dcfbc2e0bc9d82efb4acd73cb3e99730e27e10177fcfb78b6399a4bfcdf391"
"27c440dbd5053253a3a692f9bf89b9b6e9612127cf97db1e11ffa9679acc933b"
),
gas_cost
}
}
};
return precompileGeneric(_message, inputOutput);
}
template <evmc_revision Revision>
evmc::result EVMHost::precompileALTBN128G1Mul(evmc_message const& _message) noexcept
{
// NOTE this is a partial implementation for some inputs.
static map<bytes, bytes> const inputOutput{
// Fixed 40000 or 6000 gas.
int64_t gas_cost = (Revision < EVMC_ISTANBUL) ? 40000 : 6000;
static map<bytes, EVMPrecompileOutput> const inputOutput{
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000"),
fromHex("030644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd315ed738c0e0a7c92e7845f96b2ae9c0a68a6a449e3538fc7ff3ebf7a5a18a2c4")
{
fromHex("030644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd315ed738c0e0a7c92e7845f96b2ae9c0a68a6a449e3538fc7ff3ebf7a5a18a2c4"),
gas_cost
}
},
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000000"),
fromHex("17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c")
{
fromHex("17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa901e0559bacb160664764a357af8a9fe70baa9258e0b959273ffc5718c6d4cc7c"),
gas_cost
}
},
{
fromHex("09b54f111d3b2d1b2fe1ae9669b3db3d7bf93b70f00647e65c849275de6dc7fe18b2e77c63a3e400d6d1f1fbc6e1a1167bbca603d34d03edea231eb0ab7b14b4030f7b0c405c888aff922307ea2cd1c70f64664bab76899500341f4260a209290000000000000000000000000000000000000000000000000000000000000000"),
fromHex("16a1d378d1a98cf5383cdc512011234287ca43b6a078d1842d5c58c5b1f475cc1309377a7026d08ca1529eab74381a7e0d3a4b79d80bacec207cd52fc8e3769c")
{
fromHex("16a1d378d1a98cf5383cdc512011234287ca43b6a078d1842d5c58c5b1f475cc1309377a7026d08ca1529eab74381a7e0d3a4b79d80bacec207cd52fc8e3769c"),
gas_cost
}
},
{
fromHex("0a6de0e2240aa253f46ce0da883b61976e3588146e01c9d8976548c145fe6e4a04fbaa3a4aed4bb77f30ebb07a3ec1c7d77a7f2edd75636babfeff97b1ea686e1551dcd4965285ef049512d2d30cbfc1a91acd5baad4a6e19e22e93176197f170000000000000000000000000000000000000000000000000000000000000000"),
fromHex("28d3c57516712e7843a5b3cfa7d7274a037943f5bd57c227620ad207728e42832795fa9df21d4b8b329a45bae120f1fd9df9049ecacaa9dd1eca18bc6a55cd2f")
{
fromHex("28d3c57516712e7843a5b3cfa7d7274a037943f5bd57c227620ad207728e42832795fa9df21d4b8b329a45bae120f1fd9df9049ecacaa9dd1eca18bc6a55cd2f"),
gas_cost
}
},
{
fromHex("0c54b42137b67cc268cbb53ac62b00ecead23984092b494a88befe58445a244a18e3723d37fae9262d58b548a0575f59d9c3266db7afb4d5739555837f6b8b3e0c692b41f1acc961f6ea83bae2c3a1a55c54f766c63ba76989f52c149c17b5e70000000000000000000000000000000000000000000000000000000000000000"),
fromHex("258f1faa356e470cca19c928afa5ceed6215c756912af5725b8db5777cc8f3b6175ced8a58d0c132c2b95ba14c16dde93e7f7789214116ff69da6f44daa966e6")
{
fromHex("258f1faa356e470cca19c928afa5ceed6215c756912af5725b8db5777cc8f3b6175ced8a58d0c132c2b95ba14c16dde93e7f7789214116ff69da6f44daa966e6"),
gas_cost
}
},
{
fromHex("0f103f14a584d4203c27c26155b2c955f8dfa816980b24ba824e1972d6486a5d0c4165133b9f5be17c804203af781bcf168da7386620479f9b885ecbcd27b17b0ea71d0abb524cac7cfff5323e1d0b14ab705842426c978f96753ccce258ed930000000000000000000000000000000000000000000000000000000000000000"),
fromHex("2a49621e12910cd90f3e731083d454255bf1c533d6e15b8699156778d0f27f5d2590ee31824548d159aa2d22296bf149d564c0872f41b89b7dc5c6e6e3cd1c4d")
{
fromHex("2a49621e12910cd90f3e731083d454255bf1c533d6e15b8699156778d0f27f5d2590ee31824548d159aa2d22296bf149d564c0872f41b89b7dc5c6e6e3cd1c4d"),
gas_cost
}
},
{
fromHex("111e2e2a5f8828f80ddad08f9f74db56dac1cc16c1cb278036f79a84cf7a116f1d7d62e192b219b9808faa906c5ced871788f6339e8d91b83ac1343e20a16b3000000000000000000000000000000000000000e40800000000000000008cdcbc0000000000000000000000000000000000000000000000000000000000000000"),
fromHex("25ff95a3abccf32adc6a4c3c8caddca67723d8ada802e9b9f612e3ddb40b20050d82b09bb4ec927bbf182bdc402790429322b7e2f285f2aad8ea135cbf7143d8")
{
fromHex("25ff95a3abccf32adc6a4c3c8caddca67723d8ada802e9b9f612e3ddb40b20050d82b09bb4ec927bbf182bdc402790429322b7e2f285f2aad8ea135cbf7143d8"),
gas_cost
}
},
{
fromHex("17d5d09b4146424bff7e6fb01487c477bbfcd0cdbbc92d5d6457aae0b6717cc502b5636903efbf46db9235bbe74045d21c138897fda32e079040db1a16c1a7a11887420878c0c8e37605291c626585eabbec8d8b97a848fe8d58a37b004583510000000000000000000000000000000000000000000000000000000000000000"),
fromHex("2364294faf6b89fedeede9986aa777c4f6c2f5c4a4559ee93dfec9b7b94ef80b05aeae62655ea23865ae6661ae371a55c12098703d0f2301f4223e708c92efc6")
{
fromHex("2364294faf6b89fedeede9986aa777c4f6c2f5c4a4559ee93dfec9b7b94ef80b05aeae62655ea23865ae6661ae371a55c12098703d0f2301f4223e708c92efc6"),
gas_cost
}
},
{
fromHex("1c36e713d4d54e3a9644dffca1fc524be4868f66572516025a61ca542539d43f042dcc4525b82dfb242b09cb21909d5c22643dcdbe98c4d082cc2877e96b24db016086cc934d5cab679c6991a4efcedbab26d7e4fb23b6a1ad4e6b5c2fb59ce50000000000000000000000000000000000000000000000000000000000000000"),
fromHex("1644e84fef7b7fdc98254f0654580173307a3bc44db990581e7ab55a22446dcf28c2916b7e875692b195831945805438fcd30d2693d8a80cf8c88ec6ef4c315d")
{
fromHex("1644e84fef7b7fdc98254f0654580173307a3bc44db990581e7ab55a22446dcf28c2916b7e875692b195831945805438fcd30d2693d8a80cf8c88ec6ef4c315d"),
gas_cost
}
},
{
fromHex("1e39e9f0f91fa7ff8047ffd90de08785777fe61c0e3434e728fce4cf35047ddc2e0b64d75ebfa86d7f8f8e08abbe2e7ae6e0a1c0b34d028f19fa56e9450527cb1eec35a0e955cad4bee5846ae0f1d0b742d8636b278450c534e38e06a60509f90000000000000000000000000000000000000000000000000000000000000000"),
fromHex("1385281136ff5b2c326807ff0a824b6ca4f21fcc7c8764e9801bc4ad497d501202254594be8473dcf018a2aa66ea301e38fc865823acf75a9901721d1fc6bf4c")
{
fromHex("1385281136ff5b2c326807ff0a824b6ca4f21fcc7c8764e9801bc4ad497d501202254594be8473dcf018a2aa66ea301e38fc865823acf75a9901721d1fc6bf4c"),
gas_cost
}
},
{
fromHex("232063b584fb76c8d07995bee3a38fa7565405f3549c6a918ddaa90ab971e7f82ac9b135a81d96425c92d02296322ad56ffb16299633233e4880f95aafa7fda70689c3dc4311426ee11707866b2cbdf9751dacd07245bf99d2113d3f5a8cac470000000000000000000000000000000000000000000000000000000000000000"),
fromHex("2174f0221490cd9c15b0387f3251ec3d49517a51c37a8076eac12afb4a95a7071d1c3fcd3161e2a417b4df0955f02db1fffa9005210fb30c5aa3755307e9d1f5")
{
fromHex("2174f0221490cd9c15b0387f3251ec3d49517a51c37a8076eac12afb4a95a7071d1c3fcd3161e2a417b4df0955f02db1fffa9005210fb30c5aa3755307e9d1f5"),
gas_cost
}
}
};
return precompileGeneric(_message, inputOutput);
}
template <evmc_revision Revision>
evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _message) noexcept
{
// Base + per pairing gas.
constexpr auto calc_cost = [](unsigned points) -> int64_t {
// Number of 192-byte points.
return (Revision < EVMC_ISTANBUL) ?
(100000 + 80000 * points):
(45000 + 34000 * points);
};
// NOTE this is a partial implementation for some inputs.
static map<bytes, bytes> const inputOutput{
static map<bytes, EVMPrecompileOutput> const inputOutput{
{
fromHex(
"17c139df0efee0f766bc0204762b774362e4ded88953a39ce849a8a7fa163fa9"
@ -816,7 +980,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"19b763513924a736e4eebd0d78c91c1bc1d657fee4214057d21414011cfcc763"
"2f8d9f9ab83727c77a2fec063cb7b6e5eb23044ccf535ad49d46d394fb6f6bf6"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(2)
}
},
{
fromHex(
@ -833,7 +1000,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"090689d0585ff075ec9e99ad690c3395bc4b313370b38ef355acdadcd122975b"
"12c85ea5db8c6deb4aab71808dcb408fe3d1e7690c43d37b4ce6cc0166fa7daa"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(2)
}
},
{
fromHex(
@ -850,7 +1020,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"090689d0585ff075ec9e99ad690c3395bc4b313370b38ef355acdadcd122975b"
"12c85ea5db8c6deb4aab71808dcb408fe3d1e7690c43d37b4ce6cc0166fa7daa"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(2)
}
},
{
fromHex(
@ -867,7 +1040,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"090689d0585ff075ec9e99ad690c3395bc4b313370b38ef355acdadcd122975b"
"12c85ea5db8c6deb4aab71808dcb408fe3d1e7690c43d37b4ce6cc0166fa7daa"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(2)
}
},
{
fromHex(
@ -884,7 +1060,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"090689d0585ff075ec9e99ad690c3395bc4b313370b38ef355acdadcd122975b"
"12c85ea5db8c6deb4aab71808dcb408fe3d1e7690c43d37b4ce6cc0166fa7daa"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(2)
}
},
{
fromHex(
@ -907,7 +1086,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"21ee6226d31426322afcda621464d0611d226783262e21bb3bc86b537e986237"
"096df1f82dff337dd5972e32a8ad43e28a78a96a823ef1cd4debe12b6552ea5f"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(3)
}
},
{
fromHex(
@ -930,7 +1112,10 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
"090689d0585ff075ec9e99ad690c3395bc4b313370b38ef355acdadcd122975b"
"12c85ea5db8c6deb4aab71808dcb408fe3d1e7690c43d37b4ce6cc0166fa7daa"
),
fromHex("0000000000000000000000000000000000000000000000000000000000000001")
{
fromHex("0000000000000000000000000000000000000000000000000000000000000001"),
calc_cost(3)
}
}
};
return precompileGeneric(_message, inputOutput);
@ -938,11 +1123,14 @@ evmc::result EVMHost::precompileALTBN128PairingProduct(evmc_message const& _mess
evmc::result EVMHost::precompileGeneric(
evmc_message const& _message,
map<bytes, bytes> const& _inOut) noexcept
map<bytes, EVMPrecompileOutput> const& _inOut) noexcept
{
bytes input(_message.input_data, _message.input_data + _message.input_size);
if (_inOut.count(input))
return resultWithGas(_message, _inOut.at(input));
{
auto const& ret = _inOut.at(input);
return resultWithGas(_message.gas, ret.gas_used, ret.output);
}
else
return resultWithFailure();
}
@ -955,13 +1143,22 @@ evmc::result EVMHost::resultWithFailure() noexcept
}
evmc::result EVMHost::resultWithGas(
evmc_message const& _message,
int64_t gas_limit,
int64_t gas_required,
bytes const& _data
) noexcept
{
evmc::result result({});
result.status_code = EVMC_SUCCESS;
result.gas_left = _message.gas;
if (gas_limit < gas_required)
{
result.status_code = EVMC_OUT_OF_GAS;
result.gas_left = 0;
}
else
{
result.status_code = EVMC_SUCCESS;
result.gas_left = gas_limit - gas_required;
}
result.output_data = _data.data();
result.output_size = _data.size();
return result;

View File

@ -37,6 +37,11 @@ namespace solidity::test
using Address = util::h160;
using StorageMap = std::map<evmc::bytes32, evmc::storage_value>;
struct EVMPrecompileOutput {
bytes const output;
int64_t gas_used;
};
class EVMHost: public evmc::MockedHost
{
public:
@ -110,13 +115,17 @@ private:
static evmc::result precompileRipeMD160(evmc_message const& _message) noexcept;
static evmc::result precompileIdentity(evmc_message const& _message) noexcept;
static evmc::result precompileModExp(evmc_message const& _message) noexcept;
template <evmc_revision Revision>
static evmc::result precompileALTBN128G1Add(evmc_message const& _message) noexcept;
template <evmc_revision Revision>
static evmc::result precompileALTBN128G1Mul(evmc_message const& _message) noexcept;
template <evmc_revision Revision>
static evmc::result precompileALTBN128PairingProduct(evmc_message const& _message) noexcept;
static evmc::result precompileGeneric(evmc_message const& _message, std::map<bytes, bytes> const& _inOut) noexcept;
/// @returns a result object with no gas usage and result data taken from @a _data.
static evmc::result precompileGeneric(evmc_message const& _message, std::map<bytes, EVMPrecompileOutput> const& _inOut) noexcept;
/// @returns a result object with gas usage and result data taken from @a _data.
/// The outcome will be a failure if the limit < required.
/// @note The return value is only valid as long as @a _data is alive!
static evmc::result resultWithGas(evmc_message const& _message, bytes const& _data) noexcept;
static evmc::result resultWithGas(int64_t gas_limit, int64_t gas_required, bytes const& _data) noexcept;
static evmc::result resultWithFailure() noexcept;
evmc::VM& m_vm;