Re: CVS commit: [matt-nb5-mips64] src/sys/arch/mips/include

[Matt Thomas <matt%3am-software.com@localhost>]

On May 12, 2010, at 5:19 AM, Simon Burge wrote:

> Matt Thomas wrote:
> 
>> Module Name: src
>> Committed By:        matt
>> Date:                Tue May 11 22:08:02 UTC 2010
>> 
>> Modified Files:
>> 
>>      src/sys/arch/mips/include [matt-nb5-mips64]: locore.h
>> 
>> Log Message:
>> 
>> Use assembly since deref a 64bit value as a pointer does not make a
>> 32bit compiler happy.
> 
> Dang, ignore my previous because this code is a little different.
> 
> +       __asm volatile("lw      %0, 0(%1)" : "=r"(rv) : "d"(addr));
> 
> "d" is listed as "General-purpose integer register" in the gcc docs.
> Does the new code pass the full 64-bits of addr in when compiled on an
> ABI where an int is 32-bits even though a full register is 64-bits?

Yes.