Hi!
Currently, i'm analyzing v8 source code, since i want to port v8
to SuperH architecture
and plan to contribute the code when it is finished.
After reading documentation about dynamic compilation techniques,
and reading v8's code,
I am now thinking about how to port v8 to SuperH. At the same time,
there are some
source code that i have vague understanding now, could you tell me
the reason why we need
to do all of this?
Question 1:
function JSEntryStub::GenerateBody in file codegen-ia32.cc.
why push a fake receiver? What is it used for?
// Fake a receiver (NULL).
__ push(Immediate(0)); // receiver
Question 2:
function MacroAssembler::EnterFrame in file macro-assembler-
ia32.cc,
why push an empty code cache slot? What is it used for?
push(Immediate(0)); // Push an empty code cache slot.
Question 3:
function MacroAssembler::PushTryHandler in file macro-assembler-
ia32.cc,
why push the following two? What is it used for?
push(Immediate(Smi::FromInt(StackHandler::kCodeNotPresent)));
push(Immediate(0)); // NULL parameter pointer
Thanks!
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