mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-04 10:24:13 +00:00
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/* ldindr.c
|
|
Handle indirect symbols.
|
|
|
|
BFD supplies symbols to be indirected with the BFD_INDIRECT bit
|
|
set. Whenever the linker gets one of these, it calls add_indirect
|
|
with the symbol. We look up the symbol which this one dereferneces,
|
|
and stop if they are the same. If they are not the same, copy all
|
|
the information from the current to the dereffed symbol. Set the
|
|
indirect bit in the flag. From now on the ldsym_get stuff will
|
|
perform the indirection for us, at no charge.
|
|
*/
|
|
|
|
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "ld.h"
|
|
#include "ldsym.h"
|
|
#include "ldmisc.h"
|
|
|
|
|
|
|
|
static asymbol **
|
|
DEFUN(move_it,(a_list, b_list),
|
|
asymbol **a_list AND
|
|
asymbol **b_list)
|
|
{
|
|
asymbol **head = a_list;
|
|
asymbol **cursor = head;
|
|
|
|
if (a_list == 0) return b_list;
|
|
if (b_list == 0) return a_list;
|
|
|
|
while (1) {
|
|
asymbol *ptr = cursor[0];
|
|
asymbol **next = (asymbol **)(ptr->udata);
|
|
if (next == 0) {
|
|
ptr->udata = (PTR) b_list;
|
|
return head;
|
|
}
|
|
cursor = next;
|
|
}
|
|
}
|
|
|
|
void
|
|
DEFUN(add_indirect,(ptr),
|
|
asymbol **ptr)
|
|
{
|
|
ldsym_type *lgs = ldsym_get((*ptr)->name);
|
|
ldsym_type *new = ldsym_get(((asymbol *)((*ptr)->value))->name);
|
|
|
|
/* If the mapping has already been done, stop now */
|
|
if (lgs == new) return;
|
|
lgs->flags |= SYM_INDIRECT;
|
|
|
|
new->scoms_chain = move_it(new->scoms_chain, lgs->scoms_chain);
|
|
lgs->scoms_chain = 0;
|
|
new->srefs_chain = move_it(new->srefs_chain, lgs->srefs_chain);
|
|
lgs->srefs_chain = 0;
|
|
new->sdefs_chain = move_it(new->sdefs_chain, lgs->sdefs_chain);
|
|
lgs->sdefs_chain = 0;
|
|
|
|
lgs->sdefs_chain = (asymbol **)new;
|
|
}
|
|
|
|
|
|
|