From 6a053cb1ff643cec3349d7f2f47ae5573f82d613 Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Mon, 6 Jan 2020 14:34:52 -0700 Subject: Change section_offsets to a std::vector This changes section_offsets to be specialization of a std::vector and updates all the users. It also removes the ANOFFSET and SIZEOF_N_SECTION_OFFSETS macros. Most of this is just a generic sort of cleanup, that reduces the number of lines of code. However, a couple spots were doing weird things. objfile_relocate did: - std::vector - new_debug_offsets (SIZEOF_N_SECTION_OFFSETS (debug_objfile->num_sections)); ... which seems to greatly over-estimate the number of elements needed. This appeared in set_objfile_default_section_offset: - std::vector offsets (objf->num_sections, - { { offset } }); ... which makes sense due to type safety, but is also actively confusing given that section_offsets was previously also a kind of vector type. Tested on x86-64 Fedora 30. gdb/ChangeLog 2020-01-08 Tom Tromey * xcoffread.c (enter_line_range, read_xcoff_symtab) (process_xcoff_symbol, xcoff_symfile_offsets): Update. * symtab.h (MSYMBOL_VALUE_ADDRESS): Update. (struct section_offsets, ANOFFSET, SIZEOF_N_SECTION_OFFSETS): Remove. (section_offsets): New typedef. * symtab.c (fixup_section, get_msymbol_address): Update. * symmisc.c (dump_msymbols): Update. * symfile.h (relative_addr_info_to_section_offsets) (symfile_map_offsets_to_segments): Update. * symfile.c (build_section_addr_info_from_objfile) (init_objfile_sect_indices): Update. (struct place_section_arg): Change type of "offsets". (place_section): Update. (relative_addr_info_to_section_offsets): Change type of "section_offsets". Remove "num_sections" parameter. (default_symfile_offsets, syms_from_objfile_1) (set_objfile_default_section_offset): Update. (reread_symbols): No need to preserve section offsets by hand. (symfile_map_offsets_to_segments): Change type of "offsets". * stap-probe.c (relocate_address): Update. * stabsread.h (process_one_symbol): Update. * solib-target.c (struct lm_info_target) : Change type. (solib_target_relocate_section_addresses): Update. * solib-svr4.c (enable_break, svr4_relocate_main_executable): Update. * solib-frv.c (frv_relocate_main_executable): Update. * solib-dsbt.c (dsbt_relocate_main_executable): Update. * solib-aix.c (solib_aix_get_section_offsets): Change return type. (solib_aix_solib_create_inferior_hook): Update. * remote.c (remote_target::get_offsets): Update. * psymtab.c (find_pc_sect_psymtab): Update. * psympriv.h (struct partial_symbol) : Update. * objfiles.h (obj_section_offset): Update. (struct objfile) : Change type. : Remove. (objfile_relocate): Update. * objfiles.c (entry_point_address_query): Update (relocate_one_symbol): Change type of "section_offsets". (objfile_relocate1, objfile_relocate1): Change type of "new_offsets". (objfile_rebase1): Update. * mipsread.c (mipscoff_symfile_read): Update. (read_alphacoff_dynamic_symtab): Remove "section_offsets" parameter. * mdebugread.c (parse_symbol): Change type of "section_offsets". (parse_external, psymtab_to_symtab_1): Update. * machoread.c (macho_symfile_offsets): Update. * ia64-tdep.c (ia64_find_unwind_table): Update. * hppa-tdep.c (read_unwind_info): Update. * hppa-bsd-tdep.c (hppabsd_find_global_pointer): Update. * dwarf2read.c (create_addrmap_from_index) (create_addrmap_from_aranges, dw2_find_pc_sect_compunit_symtab) (process_psymtab_comp_unit_reader, add_partial_symbol) (add_partial_subprogram, process_full_comp_unit) (read_file_scope, read_func_scope, read_lexical_block_scope) (read_call_site_scope, dwarf2_rnglists_process) (dwarf2_ranges_process, dwarf2_ranges_read) (dwarf_decode_lines_1, var_decode_location, new_symbol) (dwarf2_fetch_die_loc_sect_off, dwarf2_per_cu_text_offset): Update. * dwarf2-frame.c (execute_cfa_program, dwarf2_frame_find_fde): Update. * dtrace-probe.c (dtrace_probe::get_relocated_address): Update. * dbxread.c (read_dbx_symtab, read_ofile_symtab): Update. (process_one_symbol): Change type of "section_offsets". * ctfread.c (get_objfile_text_range): Update. * coffread.c (coff_symtab_read, enter_linenos) (process_coff_symbol): Update. * coff-pe-read.c (add_pe_forwarded_sym): Update. * amd64-windows-tdep.c (amd64_windows_find_unwind_info): Update. Change-Id: I147eb967e9b44d82f4048039de7bb44b80cd72fb --- gdb/mdebugread.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) (limited to 'gdb/mdebugread.c') diff --git a/gdb/mdebugread.c b/gdb/mdebugread.c index 622ff27..ff1d130 100644 --- a/gdb/mdebugread.c +++ b/gdb/mdebugread.c @@ -580,7 +580,7 @@ add_data_symbol (SYMR *sh, union aux_ext *ax, int bigend, static int parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, - struct section_offsets *section_offsets, struct objfile *objfile) + const section_offsets §ion_offsets, struct objfile *objfile) { struct gdbarch *gdbarch = get_objfile_arch (objfile); const bfd_size_type external_sym_size = debug_swap->external_sym_size; @@ -610,18 +610,18 @@ parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, The value of a stBlock symbol is the displacement from the procedure address. */ if (sh->st != stEnd && sh->st != stBlock) - sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); + sh->value += section_offsets[SECT_OFF_TEXT (objfile)]; break; case scData: case scSData: case scRData: case scPData: case scXData: - sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); + sh->value += section_offsets[SECT_OFF_DATA (objfile)]; break; case scBss: case scSBss: - sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); + sh->value += section_offsets[SECT_OFF_BSS (objfile)]; break; } @@ -2023,8 +2023,7 @@ parse_procedure (PDR *pr, struct compunit_symtab *search_symtab, /* GDB expects the absolute function start address for the procedure descriptor in e->pdr.adr. As the address in the procedure descriptor is usually relative, - we would have to relocate e->pdr.adr with cur_fdr->adr and - ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). + we would have to relocate e->pdr.adr with cur_fdr->adr. Unfortunately cur_fdr->adr and e->pdr.adr are both absolute in shared libraries on some systems, and on other systems e->pdr.adr is sometimes offset by a bogus value. @@ -2060,11 +2059,8 @@ parse_procedure (PDR *pr, struct compunit_symtab *search_symtab, This routine clobbers top_stack->cur_block and ->cur_st. */ -static void parse_external (EXTR *, int, struct section_offsets *, - struct objfile *); - static void -parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, +parse_external (EXTR *es, int bigend, const section_offsets §ion_offsets, struct objfile *objfile) { union aux_ext *ax; @@ -3862,7 +3858,7 @@ psymtab_to_symtab_1 (struct objfile *objfile, struct linetable *lines; CORE_ADDR lowest_pdr_addr = 0; int last_symtab_ended = 0; - struct section_offsets *section_offsets = objfile->section_offsets; + const section_offsets §ion_offsets = objfile->section_offsets; if (pst->readin) return; @@ -3980,8 +3976,7 @@ psymtab_to_symtab_1 (struct objfile *objfile, && previous_stab_code != (unsigned char) N_SO && *name == '\000') { - valu += ANOFFSET (section_offsets, - SECT_OFF_TEXT (objfile)); + valu += section_offsets[SECT_OFF_TEXT (objfile)]; previous_stab_code = N_SO; cust = end_symtab (valu, SECT_OFF_TEXT (objfile)); end_stabs (); @@ -4028,8 +4023,7 @@ psymtab_to_symtab_1 (struct objfile *objfile, else { /* Handle encoded stab line number. */ - valu += ANOFFSET (section_offsets, - SECT_OFF_TEXT (objfile)); + valu += section_offsets[SECT_OFF_TEXT (objfile)]; record_line (get_current_subfile (), sh.index, gdbarch_addr_bits_remove (gdbarch, valu)); } -- cgit v1.1