Commit c772f1d1 authored by Sami Tolvanen's avatar Sami Tolvanen Committed by Masahiro Yamada
Browse files

gendwarfksyms: Expand array_type 



Add support for expanding DW_TAG_array_type, and the subrange type
indicating array size.

Example source code:

  const char *s[34];

Output with --dump-dies:

  variable array_type[34] {
    pointer_type {
      const_type {
        base_type char byte_size(1) encoding(6)
      }
    } byte_size(8)
  }

Signed-off-by: default avatarSami Tolvanen <samitolvanen@google.com>
Reviewed-by: default avatarPetr Pavlu <petr.pavlu@suse.com>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent 220a0857

scripts/gendwarfksyms/dwarf.c

+30 −0
Original line number Diff line number Diff line
@@ -220,6 +220,7 @@ DEFINE_PROCESS_UDATA_ATTRIBUTE(encoding) 
	}



DEFINE_MATCH(formal_parameter)

DEFINE_MATCH(subrange)



bool match_all(Dwarf_Die *die)

{
@@ -342,6 +343,33 @@ DEFINE_PROCESS_TYPE(shared) 
DEFINE_PROCESS_TYPE(volatile)

DEFINE_PROCESS_TYPE(typedef)



static void process_subrange_type(struct state *state, struct die *cache,

				  Dwarf_Die *die)

{

	Dwarf_Word count = 0;



	if (get_udata_attr(die, DW_AT_count, &count))

		process_fmt(cache, "[%" PRIu64 "]", count);

	else if (get_udata_attr(die, DW_AT_upper_bound, &count))

		process_fmt(cache, "[%" PRIu64 "]", count + 1);

	else

		process(cache, "[]");

}



static void process_array_type(struct state *state, struct die *cache,

			       Dwarf_Die *die)

{

	process(cache, "array_type");

	/* Array size */

	check(process_die_container(state, cache, die, process_type,

				    match_subrange_type));

	process(cache, " {");

	process_linebreak(cache, 1);

	process_type_attr(state, cache, die);

	process_linebreak(cache, -1);

	process(cache, "}");

}



static void __process_subroutine_type(struct state *state, struct die *cache,

				      Dwarf_Die *die, const char *type)

{
@@ -437,7 +465,9 @@ static int process_type(struct state *state, struct die *parent, Dwarf_Die *die) 
	PROCESS_TYPE(volatile)

	/* Subtypes */

	PROCESS_TYPE(formal_parameter)

	PROCESS_TYPE(subrange)

	/* Other types */

	PROCESS_TYPE(array)

	PROCESS_TYPE(base)

	PROCESS_TYPE(subroutine)

	PROCESS_TYPE(typedef)