[M3devel] LONGINT

[Rodney M. Bates]

I'll volunteer to do the update to the language definition, as that is an
interest of mine.

Tony Hosking wrote:
> I've successfully bootstrapped a CM3 compiler that supports LONGINT  as 
> a 64-bit integer type (equivalent to "long long" in C) in addition  to 
> INTEGER (same as "long" in C).  This will be useful for  simplifying 
> interfaces to C library routines that expect to be able  to treat 64-bit 
> integers such as "off_t" for lseek, etc.
> 
> Currently, the compiler does not treat LONGINT as an ordinal type  (I'm 
> not sure this would ever be a good idea) so it cannot be used to  index 
> arrays, define enumerations etc., though the simple operations  ABS, 
> MAX, MIN, addition, comparisons, MOD, multiplication,  subtraction, 
> assignment, are all supported.  This includes changes to  m3core (with 
> support for Long.T similar to Word.T, plus RTTipe and  RTTypeMap, etc.) 
> and libm3 for Pickle2, as well as to m3middle,  m3front, and the 
> gcc-based compiler backend.  There is still work  that needs to be done 
> to support and test all the other M3 tools such  as network objects, 
> etc., with support and testing needed in m3tk for  the new type, as well 
> as in other tools like m3browser.
> 
> How best should I proceed to get this out to the community.  I am  
> tempted to push it into the CVS head just so that it gets some  testing, 
> but perhaps that is premature. I can confirm a complete  bootstrap via 
> "do-cm3-std.sh" that appears to produce perfectly  functional 
> executables, including mentor, etc.
> 
> 

-- 
-------------------------------------------------------------
Rodney M. Bates, retired assistant professor
Dept. of Computer Science, Wichita State University
Wichita, KS 67260-0083
316-978-3922
rodney.bates at wichita.edu