Thu May 21 18:00:09 1992 Michael Tiemann (tiemann@rtl.cygnus.com)
[deliverable/binutils-gdb.git] / bfd / TODO
1 Things that still need to be handled: -*- Text -*-
2
3 o - change the memory usage to reflect the message which follows the
4 page break.
5 o - implement bfd_abort, which should close the bfd but not alter the
6 filesystem.
7 o - update the bfd doc; write a how-to-write-a-backend doc.
8 o - change reloc handling as per Steve's suggestion.
9 (more details please.....)
10 \f
11 Changing the way bfd uses memory. The new convention is simple:
12
13 o - bfd will never write into user-supplied memory, nor attempt to
14 free it.
15 o - closing a bfd may reclaim all bfd-allocated memory associated
16 with that bfd.
17 - - bfd_target_list will be the one exception; you must reclaim the
18 returned vector yourself.
19
20 Interface implications are minor (get_symcount_upper_bound will go
21 away; bfd_cannicalize_symtab will allocate its own memory, etc).
22
23 Certain operations consume a lot of memory; for them manual
24 reclaimation is available:
25
26 o - bfd_canonicalize_symtab will return a pointer to a
27 null-terminated vector of symbols. Subsequent calls may or may
28 not return the same pointer.
29 bfd_canonicalize_relocs will do the same; returning a pointer to
30 an array of arelocs. Calling this function will read symbols in
31 too.
32
33 o - bfd_reclaim_relocs will free the memory used by these relocs.
34 the symbols will be untouched.
35 bfd_reclaim_symtab (ne bfd_reclaim_symbol_table) will free the
36 memory allocated by canonialize_symtab.
37 Since relocations point to symbols, any relocations obtained by a
38 call to bfd_canonicalize_relocs will be reclaimed as well.
39
40 o - if you don't call the reclaim_ functions, the memory will be
41 reclaimed at bfd_close time.
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