Re: [rfa/dwarf/doc] Inter-compilation-unit reference support for partial DIEs

[Daniel Jacobowitz <drow@false.org>]

Two month ping.

Retested on i686-pc-linux-gnu, no regressions.  To my surprise the
patch still applies and works after Joel's psymtab changes.

I think his approach creates a lot of unnecessary psymtabs; I'll have a
closer look at that when I prepare the next patch in this series. 
They're only sort of unnecessary now, in that we get a psymtab for each
instance of an included header; when used with inter-CU references they
well be completely unnecessary, because we'll have real psymtabs.  So
there should be a way to detect that a psymtab containing all the
information of the pseudo-psymtab already exists.

On Tue, Apr 20, 2004 at 01:08:55PM -0400, Daniel Jacobowitz wrote:
> Dwarf changes OK?  Doc changes OK?  Comments/suggestions?

> 2004-04-20  Daniel Jacobowitz  <drow@mvista.com>
> 
> 	* Makefile.in (dwarf2read.o): Update dependencies.
> 	* dwarf2read.c: Include "splay-tree.h", "command.h", and
> 	"gdbcmd.h".
> 	(struct dwarf2_per_objfile): Add cu_tree and read_in_chain.
> 	(struct dwarf2_cu): Add read_in_chain, per_cu, last_used,
> 	mark, and has_form_ref_addr.
> 	(struct dwarf2_per_cu_data): New.
> 	(dwarf2_max_cache_age): New.
> 	(dwarf2_build_psymtabs_hard): Free cached compilation units
> 	after loading.  Create and manage the cu_tree.
> 	(psymtab_to_symtab_1): Initialize cu.
> 	(dwarf2_read_abbrevs): Set has_form_ref_addr.
> 	(find_partial_die): Use dwarf2_find_containing_comp_unit
> 	and load_comp_unit.
> 	(free_stack_comp_unit): Update comments.  Clear the per-cu
> 	pointer.  Handle aging.
> 	(dwarf2_find_containing_comp_unit, free_cached_comp_units)
> 	(age_cached_comp_units, free_one_cached_comp_unit)
> 	(dwarf2_mark, dwarf2_clear_marks, splay_tree_obstack_allocate)
> 	(create_comp_unit_tree, load_comp_unit, set_dwarf2_cmdlist)
> 	(show_dwarf2_cmdlist, set_dwarf2_cmd, show_dwarf2_cmd): New.
> 	(_initialize_dwarf2_read): Provide "maint set dwarf2 max-cache-age"
> 	and "maint show dwarf2 max-cache-age".
> 	* gdbcmd.h (maintenance_set_cmdlist, maintenance_show_cmdlist): New
> 	externs.
> 	* maint.c (maintenance_set_cmdlist, maintenance_show_cmdlist): Make
> 	global.
> 
> 2004-04-20  Daniel Jacobowitz  <drow@mvista.com>
> 
> 	* gdb.texinfo (Maintenance Commands): Document "maint set dwarf2
> 	max-cache-age" and "maint show dwarf2 max-cache-age".

-- 
Daniel Jacobowitz