On Wed, 27 Jun 2007 18:30:52 -0400 Kyle Moffett wrote:
> On Jun 27, 2007, at 13:32:40, Adrian Bunk wrote:
> > AFAIR the Intel compiler claims to be gcc.
> >
> > But these are by far not the only C compilers under Linux, and the
> > more important points are:
> >
> > Is there any userspace Linux compiler that does not support "long
> > long"?
>
> Don't know, but I'd guess not.
>
>
> > If yes, is there any other way to tell that something is a 64bit
> > int on 32bit architectures?
>
> Not that I know of. Probably the straight #else conditional is OK.
> We should also merge up the types since *EVERY* linux architecture
> has these same types:
>
> typedef signed char __s8;
> typedef unsigned char __u8;
> typedef signed short __s16;
> typedef unsigned short __u16;
> typedef signed int __s32;
> typedef unsigned int __u32;
>
> Then all 64-bit archs have:
> typedef signed long __s64;
> typedef unsigned long __u64;
>
> While all 32-bit archs have:
> typedef signed long long __s64;
> typedef unsigned long long __u64;
>
> The only trick is if you care about building 32-bit compat code using
> 64-bit linux kernel headers. In that case we should probably just
> make all archs use "long long" for their 64-bit integers, unless
> there's some platform I'm not remembering where "long long" is 128-
> bits or bigger. The other benefit is that people could then just use
> the printf format "%llu" for 64-bit integers instead of having to
> conditionalize it all over the place.
>
> I'm working on a patch now.
LDD3 ch. 11 says that long on Sparc64 is 32 bits.
Same for "ppc" (don't know which power* arch. they mean by that).
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
