Change representation of psymbol to flush out accessors
authorTom Tromey <tom@tromey.com>
Thu, 3 May 2018 22:36:17 +0000 (16:36 -0600)
committerTom Tromey <tom@tromey.com>
Thu, 26 Jul 2018 15:18:29 +0000 (09:18 -0600)
commit8a6d4234503bfe1c656d8cd335cac828507df9a3
tree39e3fcfa8399f9b70aaad86632292cc2f474348f
parent08994e1ddcc8e5e1e003602409662ae799a1ff30
Change representation of psymbol to flush out accessors

This is the psymbol analog to the patch to change the representation
of minimal symbols:

    https://sourceware.org/ml/gdb-patches/2013-10/msg00524.html

It has the same rationale: namely, that we're going to change the code
to apply psymbol offsets at runtime.  This will be done by adding an
argument to the SYMBOL_VALUE_ADDRESS macro -- but since we can't
convert all the symbol types at once, we need a new approach.

Because gdb now is in C++, this patch changes partial_symbol to
inherit from general_symbol_info, rather than renaming the field.
This simplifies code in some places.

Also, as noted before, these macros implement a kind of "phony
polymorphism" that is not actually useful in practice; so this patch
removes the macros in favor of simply referring directly to members.
In a few cases -- obj_section in this patch and the symbol address in
the future -- methods will be used instead.

Note that this removes the blanket memset from add_psymbol_to_bcache.
This hasn't really been needed since bcache was modified to allow
holes in objects and since psymtab took advantage of that.  This
deletion was required due to changing partial_symbol to derive from
general_symbol_info.

gdb/ChangeLog
2018-07-26  Tom Tromey  <tom@tromey.com>

* dwarf-index-write.c (write_psymbols, debug_names::insert)
(debug_names::write_psymbols): Update.
* psympriv.h (struct partial_symbol): Derive from
general_symbol_info.
<obj_section>: New method.
(PSYMBOL_DOMAIN, PSYMBOL_CLASS): Remove.n
* psymtab.c (find_pc_sect_psymtab_closer, find_pc_sect_psymtab)
(find_pc_sect_psymbol, fixup_psymbol_section)
(match_partial_symbol, lookup_partial_symbol, relocate_psymtabs)
(print_partial_symbols, recursively_search_psymtabs)
(compare_psymbols, psymbol_hash, psymbol_compare)
(add_psymbol_to_bcache, maintenance_check_psymtabs)
(psymbol_name_matches, psym_fill_psymbol_map): Update.
gdb/ChangeLog
gdb/dwarf-index-write.c
gdb/psympriv.h
gdb/psymtab.c