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Implement AllocateContextComp, ChainContext, CloneContext on ia32

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R=fschneider@google.com
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com//10509004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@8253 260f80e4-7a28-3924-810f-c04153c831b5
This commit is contained in:
vegorov@google.com 2012-06-04 15:54:56 +00:00
parent 411b4cfa96
commit 7c54679534
1 changed files with 37 additions and 6 deletions
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43
runtime/vm/intermediate_language_ia32.cc
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@ -647,32 +647,63 @@ void ExtractConstructorInstantiatorComp::EmitNativeCode(
LocationSummary* AllocateContextComp::MakeLocationSummary() const {
return NULL;
const intptr_t kNumInputs = 0;
const intptr_t kNumTemps = 1;
LocationSummary* locs = new LocationSummary(kNumInputs, kNumTemps);
locs->set_temp(0, Location::RegisterLocation(EDX));
locs->set_out(Location::RegisterLocation(EAX));
return locs;
}
void AllocateContextComp::EmitNativeCode(FlowGraphCompiler* compiler) {
UNIMPLEMENTED();
ASSERT(locs()->temp(0).reg() == EDX);
ASSERT(locs()->out().reg() == EAX);
__ movl(EDX, Immediate(num_context_variables()));
const ExternalLabel label("alloc_context",
StubCode::AllocateContextEntryPoint());
compiler->GenerateCall(token_index(),
try_index(),
&label,
PcDescriptors::kOther);
}
LocationSummary* ChainContextComp::MakeLocationSummary() const {
return NULL;
return LocationSummary::Make(1, Location::NoLocation());
}
void ChainContextComp::EmitNativeCode(FlowGraphCompiler* compiler) {
UNIMPLEMENTED();
Register context_value = locs()->in(0).reg();
// Chain the new context in context_value to its parent in CTX.
__ StoreIntoObject(context_value,
FieldAddress(context_value, Context::parent_offset()),
CTX);
// Set new context as current context.
__ movl(CTX, context_value);
}
LocationSummary* CloneContextComp::MakeLocationSummary() const {
return NULL;
return LocationSummary::Make(1, Location::RequiresRegister());
}
void CloneContextComp::EmitNativeCode(FlowGraphCompiler* compiler) {
UNIMPLEMENTED();
Register context_value = locs()->in(0).reg();
Register result = locs()->out().reg();
__ PushObject(Object::ZoneHandle()); // Make room for the result.
__ pushl(context_value);
compiler->GenerateCallRuntime(cid(),
token_index(),
try_index(),
kCloneContextRuntimeEntry);
__ popl(result); // Remove argument.
__ popl(result); // Get result (cloned context).
}