gen_i2c_adapter problem on x86_64

Christian Thalinger Christian.Thalinger at Sun.COM
Tue Sep 8 02:17:18 PDT 2009

John Rose wrote:
> On Sep 8, 2009, at 1:36 AM, Christian Thalinger wrote:
>> At least when we have a C2I-I2C call path.
> OK, that's the new part.  In order to do some of the argument  
> shuffling, adapter method handles can go through a C2I-I2C transition  
> pair.
> This is why we need the extra support for preserving SP in compiled  
> calls to method handles, and why MH.invoke calls must (on x86/32)  
> stash the outgoing SP in BP.  We need a similar convention on x86/64.

I already store SP in BP for MH.invoke calls in x86_64, otherwise it
wouldn't work at all.  But I don't see the connection between these two.
 Can you explain?

-- Christian

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