From 97a1449a95e34910e74ea24914f765314c2d8d1b Mon Sep 17 00:00:00 2001 From: Simon Marchi Date: Wed, 27 May 2020 11:13:52 -0400 Subject: [PATCH] Remove reference to dwarf2_per_cu_data::dwarf2_per_objfile in dw2_do_instantiate_symtab This patch begins by removing the per_cu->dwarf2_per_objfile reference in dw2_do_instantiate_symtab, instead accepting a dwarf2_per_objfile object as a parameter. It then fixes the fallouts. In this context, the dwarf2_per_objfile is generally derived from an objfile passed to a quick_symbol_functions callback. gdb/ChangeLog: * dwarf2/read.c (dw2_do_instantiate_symtab): Add per_objfile parameter, don't use per_cu->dwarf2_per_objfile. (dw2_instantiate_symtab): Likewise. (dw2_find_last_source_symtab): Update. (dw2_map_expand_apply): Update. (dw2_lookup_symbol): Update. (dw2_expand_symtabs_for_function): Update. (dw2_expand_all_symtabs): Update. (dw2_expand_symtabs_with_fullname): Update. (dw2_expand_symtabs_matching_one): Add per_objfile parameter, don't use per_cu->dwarf2_per_objfile. (dw2_expand_marked_cus): Update. (dw2_find_pc_sect_compunit_symtab): Update. (dw2_debug_names_lookup_symbol): Update. (dw2_debug_names_expand_symtabs_for_function): Update. (dw2_debug_names_map_matching_symbols): Update. (dwarf2_psymtab::expand_psymtab): Update. Change-Id: I248300822a09bae8470b65a7122d04fb9cb2b5bc --- gdb/ChangeLog | 20 +++++++++++ gdb/dwarf2/read.c | 84 ++++++++++++++++++++++++++--------------------- 2 files changed, 66 insertions(+), 38 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 436da4d75c0..e97d21fead6 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,23 @@ +2020-05-27 Simon Marchi + + * dwarf2/read.c (dw2_do_instantiate_symtab): Add per_objfile + parameter, don't use per_cu->dwarf2_per_objfile. + (dw2_instantiate_symtab): Likewise. + (dw2_find_last_source_symtab): Update. + (dw2_map_expand_apply): Update. + (dw2_lookup_symbol): Update. + (dw2_expand_symtabs_for_function): Update. + (dw2_expand_all_symtabs): Update. + (dw2_expand_symtabs_with_fullname): Update. + (dw2_expand_symtabs_matching_one): Add per_objfile parameter, + don't use per_cu->dwarf2_per_objfile. + (dw2_expand_marked_cus): Update. + (dw2_find_pc_sect_compunit_symtab): Update. + (dw2_debug_names_lookup_symbol): Update. + (dw2_debug_names_expand_symtabs_for_function): Update. + (dw2_debug_names_map_matching_symbols): Update. + (dwarf2_psymtab::expand_psymtab): Update. + 2020-05-27 Simon Marchi * dwarf2/read.c (struct dwarf2_cu) : Add parameter. diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c index ef64d13947c..05957598365 100644 --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -2341,13 +2341,13 @@ load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); } -/* Read in the symbols for PER_CU. */ +/* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ static void -dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) +dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, + dwarf2_per_objfile *dwarf2_per_objfile, + bool skip_partial) { - struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; - /* Skip type_unit_groups, reading the type units they contain is handled elsewhere. */ if (per_cu->type_unit_group_p ()) @@ -2383,22 +2383,23 @@ dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) age_cached_comp_units (dwarf2_per_objfile); } -/* Ensure that the symbols for PER_CU have been read in. OBJFILE is - the objfile from which this CU came. Returns the resulting symbol - table. */ +/* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is + the per-objfile for which this symtab is instantiated. + + Returns the resulting symbol table. */ static struct compunit_symtab * -dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) +dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, + dwarf2_per_objfile *dwarf2_per_objfile, + bool skip_partial) { - struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; - gdb_assert (dwarf2_per_objfile->per_bfd->using_index); if (!dwarf2_per_objfile->symtab_set_p (per_cu)) { free_cached_comp_units freer (dwarf2_per_objfile); scoped_restore decrementer = increment_reading_symtab (); - dw2_do_instantiate_symtab (per_cu, skip_partial); + dw2_do_instantiate_symtab (per_cu, dwarf2_per_objfile, skip_partial); process_cu_includes (dwarf2_per_objfile); } @@ -3255,7 +3256,8 @@ dw2_find_last_source_symtab (struct objfile *objfile) struct dwarf2_per_objfile *dwarf2_per_objfile = get_dwarf2_per_objfile (objfile); dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->per_bfd->all_comp_units.back (); - compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); + compunit_symtab *cust + = dw2_instantiate_symtab (dwarf_cu, dwarf2_per_objfile, false); if (cust == NULL) return NULL; @@ -3312,7 +3314,7 @@ dw2_map_expand_apply (struct objfile *objfile, /* This may expand more than one symtab, and we want to iterate over all of them. */ - dw2_instantiate_symtab (per_cu, false); + dw2_instantiate_symtab (per_cu, per_objfile, false); return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, last_made, callback); @@ -3554,7 +3556,8 @@ dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) { struct symbol *sym, *with_opaque = NULL; - struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); + struct compunit_symtab *stab + = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); @@ -3635,7 +3638,7 @@ dw2_expand_symtabs_for_function (struct objfile *objfile, dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) - dw2_instantiate_symtab (per_cu, false); + dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); } @@ -3656,7 +3659,7 @@ dw2_expand_all_symtabs (struct objfile *objfile) be triggered later on. See PR symtab/23010. So, tell dw2_instantiate_symtab to skip partial CUs -- any important partial CU will be read via DW_TAG_imported_unit anyway. */ - dw2_instantiate_symtab (per_cu, true); + dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, true); } } @@ -3688,7 +3691,7 @@ dw2_expand_symtabs_with_fullname (struct objfile *objfile, if (filename_cmp (this_fullname, fullname) == 0) { - dw2_instantiate_symtab (per_cu, false); + dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); break; } } @@ -3705,7 +3708,8 @@ dw2_expand_symtabs_matching_symbol static void dw2_expand_symtabs_matching_one - (struct dwarf2_per_cu_data *per_cu, + (dwarf2_per_cu_data *per_cu, + dwarf2_per_objfile *per_objfile, gdb::function_view file_matcher, gdb::function_view expansion_notify); @@ -3747,7 +3751,8 @@ dw2_map_matching_symbols dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_kind, domain, match_name); while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) - dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); + dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, + nullptr); return true; }); } @@ -4530,16 +4535,17 @@ run_test () static void dw2_expand_symtabs_matching_one - (struct dwarf2_per_cu_data *per_cu, + (dwarf2_per_cu_data *per_cu, + dwarf2_per_objfile *per_objfile, gdb::function_view file_matcher, gdb::function_view expansion_notify) { if (file_matcher == NULL || per_cu->v.quick->mark) { - dwarf2_per_objfile *per_objfile = per_cu->dwarf2_per_objfile; bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); - compunit_symtab *symtab = dw2_instantiate_symtab (per_cu, false); + compunit_symtab *symtab + = dw2_instantiate_symtab (per_cu, per_objfile, false); gdb_assert (symtab != nullptr); if (expansion_notify != NULL && symtab_was_null) @@ -4553,7 +4559,7 @@ dw2_expand_symtabs_matching_one static void dw2_expand_marked_cus - (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, + (dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, gdb::function_view file_matcher, gdb::function_view expansion_notify, search_domain kind) @@ -4627,7 +4633,7 @@ dw2_expand_marked_cus } dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); - dw2_expand_symtabs_matching_one (per_cu, file_matcher, + dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, file_matcher, expansion_notify); } } @@ -4734,8 +4740,8 @@ dw2_expand_symtabs_matching { QUIT; - dw2_expand_symtabs_matching_one (per_cu, file_matcher, - expansion_notify); + dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, + file_matcher, expansion_notify); } return; } @@ -4804,10 +4810,9 @@ dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), paddress (objfile->arch (), pc)); - result - = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, - false), - pc); + result = recursively_find_pc_sect_compunit_symtab + (dw2_instantiate_symtab (data, per_objfile, false), pc); + gdb_assert (result != NULL); return result; } @@ -5649,7 +5654,8 @@ dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, while ((per_cu = iter.next ()) != NULL) { struct symbol *sym, *with_opaque = NULL; - struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); + compunit_symtab *stab + = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); @@ -5709,7 +5715,7 @@ dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, struct dwarf2_per_cu_data *per_cu; while ((per_cu = iter.next ()) != NULL) - dw2_instantiate_symtab (per_cu, false); + dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); } } @@ -5748,7 +5754,8 @@ dw2_debug_names_map_matching_symbols struct dwarf2_per_cu_data *per_cu; while ((per_cu = iter.next ()) != NULL) - dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); + dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, + nullptr); return true; }); @@ -5794,8 +5801,8 @@ dw2_debug_names_expand_symtabs_matching { QUIT; - dw2_expand_symtabs_matching_one (per_cu, file_matcher, - expansion_notify); + dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, + file_matcher, expansion_notify); } return; } @@ -5812,8 +5819,8 @@ dw2_debug_names_expand_symtabs_matching struct dwarf2_per_cu_data *per_cu; while ((per_cu = iter.next ()) != NULL) - dw2_expand_symtabs_matching_one (per_cu, file_matcher, - expansion_notify); + dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, + file_matcher, expansion_notify); return true; }); } @@ -9035,7 +9042,8 @@ dwarf2_psymtab::expand_psymtab (struct objfile *objfile) expand_dependencies (objfile); - dw2_do_instantiate_symtab (per_cu_data, false); + dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); + dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); gdb_assert (get_compunit_symtab (objfile) != nullptr); } -- 2.30.2