Memory Map (S390): Difference between revisions

 

== Detecting memory ==

/* We are going to read in pairs of 1MiB and when we hit the memory limit we

* will instantly catch the program exception and stop counting, then it's just

return (size_t)probe;

}

 

Now there needs to be a function to "catch" the exceptions recognized by the processor:

/* Check if an address is valid - this only catches program exceptions to

* determine if it's valid or not */

return r;

}

 

Some C compilers are known to crash or even ABEND during compilation if addresses of labels are taken via the && operator, alternatively using direct high-level assembler syntax:

 

* HwCheckAddress

* IN:

DC A(AMBIT+CATCHPCR)

TMPSAVE DS 1D

 

== See also ===