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| author | chriseth <chris@ethereum.org> | 2017-05-31 19:06:51 +0800 |
|---|---|---|
| committer | chriseth <chris@ethereum.org> | 2017-06-08 21:52:45 +0800 |
| commit | 0185f3cbf6aae954d8c59a556af0e150850022bc (patch) | |
| tree | 49786ecfb329931f3366162586fc199ae75d2ba0 /libjulia/backends | |
| parent | ba5ee71b7f7b1ac5d6bc4b3a70dde36b34d20d8e (diff) | |
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Correct stack height adjustment after returnsub.
Diffstat (limited to 'libjulia/backends')
| -rw-r--r-- | libjulia/backends/evm/AbstractAssembly.h | 2 | ||||
| -rw-r--r-- | libjulia/backends/evm/EVMAssembly.cpp | 4 | ||||
| -rw-r--r-- | libjulia/backends/evm/EVMAssembly.h | 2 | ||||
| -rw-r--r-- | libjulia/backends/evm/EVMCodeTransform.cpp | 2 |
4 files changed, 5 insertions, 5 deletions
diff --git a/libjulia/backends/evm/AbstractAssembly.h b/libjulia/backends/evm/AbstractAssembly.h index ba2c8e20..73c6699f 100644 --- a/libjulia/backends/evm/AbstractAssembly.h +++ b/libjulia/backends/evm/AbstractAssembly.h @@ -83,7 +83,7 @@ public: /// Call a subroutine. virtual void appendJumpsub(LabelID _label, int _arguments, int _returns) = 0; /// Return from a subroutine. - virtual void appendReturnsub(int _returns) = 0; + virtual void appendReturnsub(int _returns, int _stackDiffAfter = 0) = 0; }; enum class IdentifierContext { LValue, RValue }; diff --git a/libjulia/backends/evm/EVMAssembly.cpp b/libjulia/backends/evm/EVMAssembly.cpp index a8019e86..a24d9779 100644 --- a/libjulia/backends/evm/EVMAssembly.cpp +++ b/libjulia/backends/evm/EVMAssembly.cpp @@ -134,12 +134,12 @@ void EVMAssembly::appendJumpsub(AbstractAssembly::LabelID _labelId, int _argumen m_stackHeight += _returns - _arguments; } -void EVMAssembly::appendReturnsub(int _returns) +void EVMAssembly::appendReturnsub(int _returns, int _stackDiffAfter) { solAssert(m_evm15, "RETURNSUB used for EVM 1.0"); solAssert(_returns >= 0, ""); m_bytecode.push_back(byte(solidity::Instruction::RETURNSUB)); - m_stackHeight -= _returns; + m_stackHeight += _stackDiffAfter - _returns; } eth::LinkerObject EVMAssembly::finalize() diff --git a/libjulia/backends/evm/EVMAssembly.h b/libjulia/backends/evm/EVMAssembly.h index 003eeaf5..4b0076dd 100644 --- a/libjulia/backends/evm/EVMAssembly.h +++ b/libjulia/backends/evm/EVMAssembly.h @@ -68,7 +68,7 @@ public: /// Call a subroutine. virtual void appendJumpsub(LabelID _label, int _arguments, int _returns) override; /// Return from a subroutine. - virtual void appendReturnsub(int _returns) override; + virtual void appendReturnsub(int _returns, int _stackDiffAfter) override; /// Resolves references inside the bytecode and returns the linker object. diff --git a/libjulia/backends/evm/EVMCodeTransform.cpp b/libjulia/backends/evm/EVMCodeTransform.cpp index c9624f82..43bd5a44 100644 --- a/libjulia/backends/evm/EVMCodeTransform.cpp +++ b/libjulia/backends/evm/EVMCodeTransform.cpp @@ -347,7 +347,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function) } if (m_evm15) - m_assembly.appendReturnsub(_function.returns.size()); + m_assembly.appendReturnsub(_function.returns.size(), stackHeightBefore); else m_assembly.appendJump(stackHeightBefore - _function.returns.size()); m_stackAdjustment -= localStackAdjustment; |