New subject: nm on Third Edition .o files?

20 Dec 2016

...
  From: "Steve Johnson" 
...
  The number on the left is a PDP-11 address, probably
for some kind of
 control register. 
It's the Processor Status Word, which contained the CPU's hardware priority
level, condition codes, etc.

...
  That's a construction that's left over from
B. 
I wonder why it was written as "0177776->integ", rather than
"*017776"?
Probably the former allowed the C compiler to work out what size the operand
was. (BTW, 'integ' was declared in a structure declaration as follows:

    struct {
	int	integ;
    };

(Did the code looked at actually say "0177776->int"? The compiler might have
barfed on a reserved keyword being used like that.)

       Noel

Re: [TUHS] nm on Third Edition .o files?