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- modify the VM calling convention so that the callee sets up its own VM frame

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This commit is contained in:
Magnus Norddahl 2018-10-09 02:08:15 +02:00
commit 137ef034d1
5 changed files with 54 additions and 106 deletions
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22
src/scripting/vm/vmframe.cpp
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@ -437,8 +437,9 @@ VMFrame *VMFrameStack::PopFrame()
int VMCall(VMFunction *func, VMValue *params, int numparams, VMReturn *results, int numresults/*, VMException **trap*/)
{
bool allocated = false;
#if 0
try
#endif
{
if (func->VarFlags & VARF_Native)
{
@ -463,12 +464,7 @@ int VMCall(VMFunction *func, VMValue *params, int numparams, VMReturn *results,
{
VMCycles[0].Clock();
VMCalls[0]++;
auto &stack = GlobalVMStack;
stack.AllocFrame(static_cast<VMScriptFunction *>(func));
allocated = true;
VMFillParams(params, stack.TopFrame(), numparams);
int numret = VMExec(&stack, code, results, numresults);
stack.PopFrame();
int numret = VMExec(static_cast<VMScriptFunction *>(func), params, numparams, results, numresults);
VMCycles[0].Unclock();
return numret;
}
@ -477,10 +473,6 @@ int VMCall(VMFunction *func, VMValue *params, int numparams, VMReturn *results,
#if 0
catch (VMException *exception)
{
if (allocated)
{
PopFrame();
}
if (trap != NULL)
{
*trap = exception;
@ -489,14 +481,6 @@ int VMCall(VMFunction *func, VMValue *params, int numparams, VMReturn *results,
throw;
}
#endif
catch (...)
{
if (allocated)
{
GlobalVMStack.PopFrame();
}
throw;
}
}
// Exception stuff for the VM is intentionally placed there, because having this in vmexec.cpp would subject it to inlining