Re: [Qemu-devel] Re: Performances on Mac OS X

[Joshua Root <z3022016@student.unsw.edu.au>]

Roine Gustafsson wrote:
>Joshua Root [z3022016@student.unsw.edu.au] wrote:
>
>>I have tried compiling qemu with xlc and it chokes on the asm. I 
>>believe that it uses a different syntax than gcc for this. I don't 
>>know what its syntax is, but if anybody does it shouldn't be too 
>>hard to make a patch which lets it compile.
>
>
>xlc is picky with the source and takes FOREVER to compile with -O6. However,
>xlc is object compatible with gcc, so usually you just use xlc on core stuff
>that needs the speed, and gcc for everything else.

Just for the record, here's a list of things in the qemu source which 
xlc doesn't like:

* __asm__
* this sort of thing: asm volatile ("dcbst 0,%0" : : "r"(ptr) : "memory");
* "..." notation in switch cases
* macros with variable number of arguments
* array definitions with no size specified

Cheers,
Josh