On Tue, Jun 7, 2016 at 12:08 PM, <dima00...@gmail.com> wrote:
> Hi all!
>
> I'm continuing to port v8 on my architecture.
> I implement some stuff and now I can insert call C printf function into
> stubs code and run d8.
> Something like this:
> void JSEntryStub::Generate(MacroAssembler* masm) {
> GenerateUnimplemented("JSEntryStub", masm); }
>
>
>
> Then I run d8 and have message:
> UNIMPLEMNETED STUB JSEntryStub
>
> . As I expected.
>
> I have a question - what does js entry stub do?
> I can see x64 version for this, but I think that v8 developers know that
> stuff better so I can generate masm calls more effective for my
> architecture.
JSEntryStub (and JSEntryTrampoline) are entered when C++ code calls
into JS code, e.g., through v8::Function::Call(). They exist mainly
to convert between the platform's C++ calling convention and the VM's
internal calling convention.
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