57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
|
|
/* S H A R E D F I L E
|
|
*
|
|
* I N I T _ G L O B L S
|
|
*
|
|
*/
|
|
|
|
#include "../share/types.h"
|
|
#include "../share/debug.h"
|
|
#include "../share/global.h"
|
|
#include "../share/alloc.h"
|
|
#include "../share/map.h"
|
|
|
|
|
|
extern short nrglobals;
|
|
|
|
init_globals()
|
|
{
|
|
/* Assign a 'global variable number (o_globnr) to
|
|
* every global variable for which we want to
|
|
* maintain ud-info. We do not maintain ud-info
|
|
* for a global variable if:
|
|
* - it is part of a ROM data block (so it will never be changed)
|
|
* - it's size is not known
|
|
* - it overlaps another variable (e.g. LOE X+2 ; LDE X)
|
|
*/
|
|
|
|
dblock_p d;
|
|
obj_p obj, prev;
|
|
short nr = 1;
|
|
offset ill_zone, x;
|
|
|
|
for (d = fdblock; d != (dblock_p) 0; d = d->d_next) {
|
|
ill_zone = (offset) 0;
|
|
for (obj = d->d_objlist; obj != (obj_p) 0; obj = obj->o_next) {
|
|
if (d->d_pseudo == DROM ||
|
|
obj->o_size == UNKNOWN_SIZE) {
|
|
obj->o_globnr = 0; /* var. not considered */
|
|
continue;
|
|
}
|
|
if (obj->o_off < ill_zone) {
|
|
obj->o_globnr = 0; /* var. not considered */
|
|
if (prev != (obj_p) 0 && prev->o_globnr != 0) {
|
|
prev->o_globnr = 0;
|
|
nr--;
|
|
}
|
|
} else {
|
|
obj->o_globnr = nr++;
|
|
}
|
|
if ((x = obj->o_off + obj->o_size) > ill_zone) {
|
|
ill_zone = x;
|
|
}
|
|
prev = obj;
|
|
}
|
|
}
|
|
nrglobals = nr -1;
|
|
}
|