[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: alpha porting and errors

On Thu, May 20, 1999 at 10:44:59PM -0400, Luke N Shulenburger wrote:
[please keep your line length < 75 characters]

>I am interested in beginning to port software to the alpha platform.
>I have moderate C skills, but have no idea what to look for when porting a 
>Can you direct me to a resource that would be sort of an alpha porting 
>howto?  that would be most helpful.

I don't know whether there is a Porting-HOWTO (would be definitely useful,

One has primarily to look for misuse and abuse of (pointer) types. There is
too much software around, which thinks that 

sizeof(int)=sizeof(long)=sizeof(void *)=4.

Otherwise, look for misaligned variables (but this is easier to say than to
find :)


>Also, I am having some problems with running software that has been compiled 
>withe -mieee flag, whenever I run mpg123, some other software (notably the 
>seti@home client) crashes with Floating point exceptions.  Is this a 
>consequence of using this flag, or does this indicate a problem with the 
>applications that I am running.
I'guess it's the second. -mieee forces IEEE-compliant use of arithmetics;
a "Floating point exceptions" (SIGFPE) means that 
1) a program did something which is not defined and
2) did not use a SIGFPE-handler.

Those who do not understand Unix are condemned to reinvent it, poorly.
  -- Henry Spencer

Reply to: