Reference psymtabs via per_bfd in DWARF reader
This changes the DWARF reader to reference the psymtabs via the per_bfd object, rather than via the objfile. This helps isolate the partial symtabs from the objfile. gdb/ChangeLog 2021-03-20 Tom Tromey <tom@tromey.com> * dwarf2/read.c (dwarf2_create_include_psymtab): Add per_bfd parameter. (process_psymtab_comp_unit_reader) (build_type_psymtab_dependencies, dwarf2_build_psymtabs_hard) (add_partial_subprogram, dwarf2_ranges_read, dwarf_decode_lines): Reference psymtabs via per_bfd.
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@ -1,3 +1,12 @@
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2021-03-20 Tom Tromey <tom@tromey.com>
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* dwarf2/read.c (dwarf2_create_include_psymtab): Add per_bfd
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parameter.
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(process_psymtab_comp_unit_reader)
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(build_type_psymtab_dependencies, dwarf2_build_psymtabs_hard)
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(add_partial_subprogram, dwarf2_ranges_read, dwarf_decode_lines):
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Reference psymtabs via per_bfd.
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2021-03-20 Tom Tromey <tom@tromey.com>
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* dwarf2/index-write.c (struct addrmap_index_data) <objfile>:
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@ -6284,7 +6284,8 @@ private:
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partial symtab as being an include of PST. */
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static void
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dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst,
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dwarf2_create_include_psymtab (dwarf2_per_bfd *per_bfd,
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const char *name, dwarf2_psymtab *pst,
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struct objfile *objfile)
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{
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dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile);
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@ -6292,7 +6293,7 @@ dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst,
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if (!IS_ABSOLUTE_PATH (subpst->filename))
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subpst->dirname = pst->dirname;
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subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1);
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subpst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (1);
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subpst->dependencies[0] = pst;
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subpst->number_of_dependencies = 1;
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}
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@ -7562,6 +7563,7 @@ process_psymtab_comp_unit_reader (const struct die_reader_specs *reader,
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{
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struct dwarf2_cu *cu = reader->cu;
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dwarf2_per_objfile *per_objfile = cu->per_objfile;
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dwarf2_per_bfd *per_bfd = per_objfile->per_bfd;
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struct objfile *objfile = per_objfile->objfile;
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struct gdbarch *gdbarch = objfile->arch ();
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struct dwarf2_per_cu_data *per_cu = cu->per_cu;
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@ -7612,7 +7614,7 @@ process_psymtab_comp_unit_reader (const struct die_reader_specs *reader,
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- baseaddr - 1);
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/* Store the contiguous range if it is not empty; it can be
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empty for CUs with no code. */
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addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap,
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addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap,
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low, high, pst);
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}
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@ -7663,7 +7665,7 @@ process_psymtab_comp_unit_reader (const struct die_reader_specs *reader,
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post-pass. */
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pst->number_of_dependencies = len;
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pst->dependencies
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= objfile->partial_symtabs->allocate_dependencies (len);
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= per_bfd->partial_symtabs->allocate_dependencies (len);
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for (i = 0; i < len; ++i)
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{
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pst->dependencies[i]
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@ -7919,7 +7921,7 @@ static int
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build_type_psymtab_dependencies (void **slot, void *info)
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{
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dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info;
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struct objfile *objfile = per_objfile->objfile;
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dwarf2_per_bfd *per_bfd = per_objfile->per_bfd;
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struct type_unit_group *tu_group = (struct type_unit_group *) *slot;
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struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu;
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dwarf2_psymtab *pst = per_cu->v.psymtab;
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@ -7930,7 +7932,7 @@ build_type_psymtab_dependencies (void **slot, void *info)
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gdb_assert (per_cu->type_unit_group_p ());
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pst->number_of_dependencies = len;
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pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len);
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pst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (len);
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for (i = 0; i < len; ++i)
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{
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struct signatured_type *iter = tu_group->tus->at (i);
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@ -8054,6 +8056,7 @@ static void
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dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
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{
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struct objfile *objfile = per_objfile->objfile;
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dwarf2_per_bfd *per_bfd = per_objfile->per_bfd;
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dwarf_read_debug_printf ("Building psymtabs of objfile %s ...",
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objfile_name (objfile));
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@ -8062,7 +8065,7 @@ dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
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= make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols,
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true);
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per_objfile->per_bfd->info.read (objfile);
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per_bfd->info.read (objfile);
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/* Any cached compilation units will be linked by the per-objfile
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read_in_chain. Make sure to free them when we're done. */
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@ -8077,10 +8080,10 @@ dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
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auto_obstack temp_obstack;
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scoped_restore save_psymtabs_addrmap
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= make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap,
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= make_scoped_restore (&per_bfd->partial_symtabs->psymtabs_addrmap,
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addrmap_create_mutable (&temp_obstack));
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for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units)
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for (dwarf2_per_cu_data *per_cu : per_bfd->all_comp_units)
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{
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if (per_cu->v.psymtab != NULL)
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/* In case a forward DW_TAG_imported_unit has read the CU already. */
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@ -8093,9 +8096,9 @@ dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
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process_skeletonless_type_units (per_objfile);
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/* Now that all TUs have been processed we can fill in the dependencies. */
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if (per_objfile->per_bfd->type_unit_groups != NULL)
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if (per_bfd->type_unit_groups != NULL)
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{
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htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (),
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htab_traverse_noresize (per_bfd->type_unit_groups.get (),
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build_type_psymtab_dependencies, per_objfile);
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}
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@ -8104,9 +8107,9 @@ dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile)
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set_partial_user (per_objfile);
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objfile->partial_symtabs->psymtabs_addrmap
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= addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap,
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objfile->partial_symtabs->obstack ());
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per_bfd->partial_symtabs->psymtabs_addrmap
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= addrmap_create_fixed (per_bfd->partial_symtabs->psymtabs_addrmap,
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per_bfd->partial_symtabs->obstack ());
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/* At this point we want to keep the address map. */
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save_psymtabs_addrmap.release ();
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@ -8721,6 +8724,7 @@ add_partial_subprogram (struct partial_die_info *pdi,
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if (set_addrmap)
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{
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struct objfile *objfile = cu->per_objfile->objfile;
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dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd;
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struct gdbarch *gdbarch = objfile->arch ();
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CORE_ADDR baseaddr;
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CORE_ADDR this_highpc;
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@ -8735,7 +8739,7 @@ add_partial_subprogram (struct partial_die_info *pdi,
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= (gdbarch_adjust_dwarf2_addr (gdbarch,
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pdi->highpc + baseaddr)
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- baseaddr);
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addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap,
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addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap,
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this_lowpc, this_highpc - 1,
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cu->per_cu->v.psymtab);
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}
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@ -14507,6 +14511,7 @@ dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return,
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dwarf2_psymtab *ranges_pst, dwarf_tag tag)
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{
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struct objfile *objfile = cu->per_objfile->objfile;
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dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd;
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struct gdbarch *gdbarch = objfile->arch ();
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const CORE_ADDR baseaddr = objfile->text_section_offset ();
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int low_set = 0;
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@ -14528,7 +14533,7 @@ dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return,
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highpc = (gdbarch_adjust_dwarf2_addr (gdbarch,
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range_end + baseaddr)
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- baseaddr);
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addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap,
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addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap,
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lowpc, highpc - 1, ranges_pst);
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}
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@ -21961,7 +21966,8 @@ dwarf_decode_lines (struct line_header *lh, const char *comp_dir,
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psymtab_include_file_name (lh, file_entry, pst,
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comp_dir, &name_holder);
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if (include_name != NULL)
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dwarf2_create_include_psymtab (include_name, pst, objfile);
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dwarf2_create_include_psymtab (cu->per_objfile->per_bfd,
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include_name, pst, objfile);
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}
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}
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else
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