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Add eWasm externals.

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This commit is contained in:
chriseth
2019-07-11 17:37:23 +02:00
parent f3bdc79187
commit e3433aa4eb
9 changed files with 418 additions and 64 deletions
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libyul/backends/wasm/WasmDialect.cpp
+65
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@@ -65,6 +65,8 @@ WasmDialect::WasmDialect():
addFunction("datasize", 1, 4, true, true);
addFunction("dataoffset", 1, 4, true, true);
addEthereumExternals();
}
BuiltinFunction const* WasmDialect::builtin(YulString _name) const
@@ -85,6 +87,69 @@ WasmDialect const& WasmDialect::instance()
return *dialect;
}
void WasmDialect::addEthereumExternals()
{
// These are not YulStrings because that would be too complicated with regards
// to the YulStringRepository reset.
static string const i64{"i64"};
static string const i32{"i32"};
static string const i32ptr{"i32"}; // Uses "i32" on purpose.
struct External { string name; vector<string> parameters; vector<string> returns; };
static vector<External> externals{
{"getAddress", {i32ptr}, {}},
{"getExternalBalance", {i32ptr, i32ptr}, {}},
{"getBlockHash", {i64, i32ptr}, {i32}},
{"call", {i64, i32ptr, i32ptr, i32ptr, i32}, {i32}},
{"callDataCopy", {i32ptr, i32, i32}, {}},
{"getCallDataSize", {}, {i32}},
{"callCode", {i64, i32ptr, i32ptr, i32ptr, i32}, {i32}},
{"callDelegate", {i64, i32ptr, i32ptr, i32}, {i32}},
{"callStatic", {i64, i32ptr, i32ptr, i32}, {i32}},
{"storageStore", {i32ptr, i32ptr}, {}},
{"storageLoad", {i32ptr, i32ptr}, {}},
{"getCaller", {i32ptr}, {}},
{"getCallValue", {i32ptr}, {}},
{"codeCopy", {i32ptr, i32, i32}, {}},
{"getCodeSize", {i32ptr}, {}},
{"getBlockCoinbase", {i32ptr}, {}},
{"create", {i32ptr, i32ptr, i32, i32ptr}, {i32}},
{"getBlockDifficulty", {i32ptr}, {}},
{"externalCodeCopy", {i32ptr, i32ptr, i32, i32}, {}},
{"getExternalCodeSize", {i32ptr}, {i32}},
{"getGasLeft", {}, {i64}},
{"getBlockGasLimit", {}, {i64}},
{"getTxGasPrice", {i32ptr}, {}},
{"log", {i32ptr, i32, i32, i32ptr, i32ptr, i32ptr, i32ptr}, {}},
{"getBlockNumber", {}, {i64}},
{"getTxOrigin", {i32ptr}, {}},
{"finish", {i32ptr, i32}, {}},
{"revert", {i32ptr, i32}, {}},
{"getReturnDataSize", {}, {i32}},
{"returnDataCopy", {i32ptr, i32, i32}, {}},
{"selfDestruct", {i32ptr}, {}},
{"getBlockTimestamp", {}, {i64}}
};
for (External const& ext: externals)
{
YulString name{"eth." + ext.name};
BuiltinFunction& f = m_functions[name];
f.name = name;
for (string const& p: ext.parameters)
f.parameters.emplace_back(YulString(p));
for (string const& p: ext.returns)
f.returns.emplace_back(YulString(p));
f.movable = false;
// TODO some of them are side effect free.
f.sideEffectFree = false;
f.sideEffectFreeIfNoMSize = false;
f.isMSize = false;
f.invalidatesStorage = (ext.name == "storageStore");
// TODO some of them do not invalidate memory
f.invalidatesMemory = true;
f.literalArguments = false;
}
}
void WasmDialect::addFunction(
string _name,
size_t _params,