27 Oct
2014
27 Oct
'14
2:40 p.m.
On Mon, Oct 27, 2014, at 09:34, Ronald Natalie wrote:
Yep, the kernel was littered with funky memory
constants using -> to
point at various registers. Probably the most ubuiqtous was
#define PS 0177776
struct {
int integ;
};
yielding the PS->integ access to the Processor Status Register.
Is there any reason this is superior to *(int *)0177776 [and e.g.
#define integ(x) (*(int *)(x))]? Did casting not exist back then?