void X86SubProgram::declareParam(const string& param, int type, int msize) {
if(msize == 0) {
_head << "%define " << X86::makeID(param) << " ebp+" << _param_offset << endl;
_end << "%undef " << X86::makeID(param) << endl;
} else {
_head << "%define _p_" << X86::makeID(param) << " ebp+" << _param_offset << endl;
_end << "%undef _p_" << X86::makeID(param) << endl;
declareLocal(param, msize, false);
writeMatrixCopyCode(param, type, msize);
}
_param_offset -= SizeofDWord;
}
// Dispatch.
as_value
Function::call(const fn_call& fn)
{
// Extract caller before pushing ourself on the call stack
VM& vm = getVM(fn);
as_object* caller = vm.calling() ? &vm.currentCall().function() : 0;
// Set up local stack frame, for parameters and locals.
FrameGuard guard(getVM(fn), *this);
CallFrame& cf = guard.callFrame();
DisplayObject* target = _env.target();
DisplayObject* orig_target = _env.get_original_target();
// Some features are version-dependant.
const int swfversion = getSWFVersion(fn);
if (swfversion < 6) {
// In SWF5, when 'this' is a DisplayObject it becomes
// the target for this function call.
// See actionscript.all/setProperty.as
DisplayObject* ch = get<DisplayObject>(fn.this_ptr);
if (ch) {
target = ch;
orig_target = ch;
}
}
/// This is only needed for SWF5 (temp switch of target)
/// We do always and base 'target' value on SWF version.
/// TODO: simplify code by maybe using a custom as_environment
/// instead, so to get an "original" target being
/// the one set now (rather then the really original one)
/// TODO: test scope when calling functions defined in another timeline
/// (target, in particular).
TargetGuard targetGuard(_env, target, orig_target);
// Push the arguments onto the local frame.
for (size_t i = 0, n = _args.size(); i < n; ++i) {
assert(_args[i].reg == 0);
if (i < fn.nargs) {
setLocal(cf, _args[i].name, fn.arg(i));
}
else {
// Still declare named arguments, even if
// they are not passed from caller
// See bug #22203
declareLocal(cf, _args[i].name);
}
}
// Add 'this'
setLocal(cf, NSV::PROP_THIS, fn.this_ptr ? fn.this_ptr : as_value());
as_object* super = fn.super ? fn.super :
fn.this_ptr ? fn.this_ptr->get_super() : 0;
// Add 'super' (SWF6+ only)
if (super && swfversion > 5) {
setLocal(cf, NSV::PROP_SUPER, super);
}
// Add 'arguments'
as_object* args = getGlobal(fn).createArray();
// Put 'arguments' in a local var.
setLocal(cf, NSV::PROP_ARGUMENTS, getArguments(*this, *args, fn, caller));
// Execute the actions.
as_value result;
ActionExec(*this, _env, &result, fn.this_ptr)();
return result;
}