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Merge pull request #9060 from ethereum/wasm-flags-in-binary-transform

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Constants for flags in wasm::BinaryTransform (refactor)
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Alex Beregszaszi 2020-05-29 11:39:08 +01:00 committed by GitHub
commit b01a1a36b1
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1 changed files with 16 additions and 4 deletions
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20
libyul/backends/wasm/BinaryTransform.cpp
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@ -39,6 +39,18 @@ bytes toBytes(uint8_t _b)
return bytes(1, _b);
}
enum class LimitsKind: uint8_t
{
Min = 0x00,
MinMax = 0x01,
};
enum class Mutability: uint8_t
{
Const = 0x00,
Var = 0x01,
};
enum class Section: uint8_t
{
CUSTOM = 0x00,
@ -530,8 +542,8 @@ bytes BinaryTransform::functionSection(vector<FunctionDefinition> const& _functi
bytes BinaryTransform::memorySection()
{
bytes result = lebEncode(1);
result.push_back(0); // flags
result.push_back(1); // initial
result.push_back(static_cast<uint8_t>(LimitsKind::Min));
result.push_back(1); // initial length
return makeSection(Section::MEMORY, std::move(result));
}
@ -540,8 +552,8 @@ bytes BinaryTransform::globalSection()
bytes result = lebEncode(m_globals.size());
for (size_t i = 0; i < m_globals.size(); ++i)
result +=
// mutable i64
bytes{uint8_t(ValueType::I64), 1} +
toBytes(ValueType::I64) +
lebEncode(static_cast<uint8_t>(Mutability::Var)) +
toBytes(Opcode::I64Const) +
lebEncodeSigned(0) +
toBytes(Opcode::End);