>>> "Andrew Pinski" <[EMAIL PROTECTED]> 25.11.07 19:45 >>> >On 11/25/07, Luca <[EMAIL PROTECTED]> wrote: >> 7.1. Add __attribute__((pointer_size(XXX))) and #pragma pointer_size >> to allow 64-bit pointers in 32-bit mode and viceversa > >This is already there, try using __attribute__((mode(DI) )).
Hmm, unless this is a new feature in 4.3, I can't seem to get this to work on either i386 (using mode DI) or x86-64 (using mode SI). Could you clarify? If this worked consistently on at least all 64-bit architectures, I would have a use for it in the kernel (cutting down the kernel size by perhaps several pages). Btw., I continue to think that the error message 'initializer element is not computable at load time' on 64-bit code like this extern char array[]; unsigned int p = (unsigned long)array; or 32-bit code like this extern char array[]; unsigned long long p = (unsigned long)array; is incorrect - the compiler generally has no knowledge what 'array' is (it may know whether the architecture is generally capable of expressing the necessary relocation, but if 'array' is really a placeholder for an assembly level constant, possibly even defined through __asm__() in the same translation unit, this diagnostic should at best be a warning). I'm pretty sure I have an open bug for this, but the sad thing is that bugs like this never appear to really get looked at. Thanks, Jan
