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Comment about MCJIT and caching pointers to entry functions

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Paweł Bylica 2014-12-16 18:40:19 +01:00
parent 91cd37e98d
commit c2699b32ee
1 changed files with 8 additions and 0 deletions
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8
libevmjit/ExecutionEngine.cpp
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@ -111,6 +111,14 @@ namespace
{
ReturnCode runEntryFunc(ExecBundle const& _exec, Runtime* _runtime)
{
// That function uses long jumps to handle "execeptions".
// Do not create any non-POD objects here
// TODO:
// Getting pointer to function seems to be cachable,
// but it looks like getPointerToFunction() method does something special
// to allow function to be executed.
// That might be related to memory manager. Can we share one?
typedef ReturnCode(*EntryFuncPtr)(Runtime*);
auto entryFuncVoidPtr = _exec.engine->getPointerToFunction(_exec.entryFunc);
auto entryFuncPtr = static_cast<EntryFuncPtr>(entryFuncVoidPtr);