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Change opcode generated by (panic) to INVALID

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EIP-141 ethereum/EIPs#141 has preserved 0xfe as an invalid opcode for aborting EVM execution. The EVM assembler supports this via the INVALID opcode.

The LLL "panic" expression used to generate a jump to an invalid location in order to abort EVM execution.  This change brings "panic" into line with EIP-141 by generating the INVALID opcode instead.
This commit is contained in:
benjaminion 2017-06-13 17:01:38 +01:00
parent 40f5690f68
commit c603369a51
2 changed files with 1 additions and 4 deletions
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4
liblll/CodeFragment.cpp
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@ -573,10 +573,6 @@ void CodeFragment::constructOperation(sp::utree const& _t, CompilerState& _s)
m_asm.append(i.m_asm);
m_asm.popTo(1);
}
else if (us == "PANIC")
{
m_asm.appendJump(m_asm.errorTag());
}
else if (us == "BYTECODESIZE")
{
m_asm.appendProgramSize();

1
liblll/CompilerState.cpp
View File

@ -45,6 +45,7 @@ CodeFragment const& CompilerState::getDef(std::string const& _s)
void CompilerState::populateStandard()
{
static const string s = "{"
"(def 'panic () (asm INVALID))"
"(def 'allgas (- (gas) 21))"
"(def 'send (to value) (call allgas to value 0 0 0 0))"
"(def 'send (gaslimit to value) (call gaslimit to value 0 0 0 0))"