[arm-gnu] Placing variable at absolute address in RAM

[Mark Deneen]

Even in this situation, haven't you just allocated space for a pointer to a struct?

I don't see how GCC is going to do anything special here.

-M
----- Original Message -----
Ok, looks like you're right there - bad example.  But I think my basic
idea is correct.  Here is yet another link - see the post by Paul Curtis
(he is a compiler writer) near the end.


excerpt:

struct my_placed_vars *my_vars = (void *)0x40003000; // EASY!

#define MY_VAR_1 (my_vars->var_1)
#define MY_VAR_2 (my_vars->var_2)

COMPLETELY PORTABLE AMONGST ALL COMPILERS FOR THE GIVEN TARGET!