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<struct section_offsets>
-	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<struct section_offsets> 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  <tromey@adacore.com>

	* 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) <offsets>: 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) <address, text_low,
	text_high>: Update.
	* objfiles.h (obj_section_offset): Update.
	(struct objfile) <section_offsets>: Change type.
	<num_sections>: 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

1 files changed, 12 insertions, 18 deletions

diff --git a/gdb/coffread.c b/gdb/coffread.c
index 0395d6d..60efb59 100644
--- a/gdb/coffread.c
+++ b/gdb/coffread.c
@@ -919,8 +919,8 @@ coff_symtab_read (minimal_symbol_reader &reader,
 		     file with no symbols.  */
 		  if (in_source_file)
 		    complete_symtab (filestring,
-		    cs->c_value + ANOFFSET (objfile->section_offsets,
-					    SECT_OFF_TEXT (objfile)),
+				     (cs->c_value
+				      + objfile->section_offsets[SECT_OFF_TEXT (objfile)]),
 				     main_aux.x_scn.x_scnlen);
 		  in_source_file = 0;
 		}
@@ -986,7 +986,7 @@ coff_symtab_read (minimal_symbol_reader &reader,
  		    || cs->c_sclass == C_THUMBEXTFUNC
  		    || cs->c_sclass == C_THUMBEXT
  		    || (pe_file && (cs->c_sclass == C_STAT)))
-		  offset = ANOFFSET (objfile->section_offsets, sec);
+		  offset = objfile->section_offsets[sec];
 
 		if (bfd_section->flags & SEC_CODE)
 		  {
@@ -1113,8 +1113,7 @@ coff_symtab_read (minimal_symbol_reader &reader,
 			    NULL, cstk.start_addr,
 			    fcn_cs_saved.c_value
 			    + fcn_aux_saved.x_sym.x_misc.x_fsize
-			    + ANOFFSET (objfile->section_offsets,
-					SECT_OFF_TEXT (objfile)));
+			    + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
 	      within_function = 0;
 	    }
 	  break;
@@ -1123,8 +1122,7 @@ coff_symtab_read (minimal_symbol_reader &reader,
 	  if (strcmp (cs->c_name, ".bb") == 0)
 	    {
 	      tmpaddr = cs->c_value;
-	      tmpaddr += ANOFFSET (objfile->section_offsets,
-				   SECT_OFF_TEXT (objfile));
+	      tmpaddr += objfile->section_offsets[SECT_OFF_TEXT (objfile)];
 	      push_context (++depth, tmpaddr);
 	    }
 	  else if (strcmp (cs->c_name, ".eb") == 0)
@@ -1147,9 +1145,9 @@ coff_symtab_read (minimal_symbol_reader &reader,
 		}
 	      if (*get_local_symbols () && !outermost_context_p ())
 		{
-		  tmpaddr =
-		    cs->c_value + ANOFFSET (objfile->section_offsets,
-					    SECT_OFF_TEXT (objfile));
+		  tmpaddr
+		    = (cs->c_value
+		       + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
 		  /* Make a block for the local symbols within.  */
 		  finish_block (0, cstk.old_blocks, NULL,
 				cstk.start_addr, tmpaddr);
@@ -1441,8 +1439,7 @@ enter_linenos (long file_offset, int first_line,
       if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line)
 	{
 	  CORE_ADDR addr = lptr.l_addr.l_paddr;
-	  addr += ANOFFSET (objfile->section_offsets,
-			    SECT_OFF_TEXT (objfile));
+	  addr += objfile->section_offsets[SECT_OFF_TEXT (objfile)];
 	  record_line (get_current_subfile (),
 		       first_line + L_LNNO32 (&lptr),
 		       gdbarch_addr_bits_remove (gdbarch, addr));
@@ -1577,8 +1574,7 @@ process_coff_symbol (struct coff_symbol *cs,
 
   if (ISFCN (cs->c_type))
     {
-      SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets,
-				      SECT_OFF_TEXT (objfile));
+      SYMBOL_VALUE (sym) += objfile->section_offsets[SECT_OFF_TEXT (objfile)];
       SYMBOL_TYPE (sym) =
 	lookup_function_type (decode_function_type (cs, cs->c_type,
 						    aux, objfile));
@@ -1610,8 +1606,7 @@ process_coff_symbol (struct coff_symbol *cs,
 	  SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
 	  SET_SYMBOL_VALUE_ADDRESS (sym,
 				    (CORE_ADDR) cs->c_value
-				    + ANOFFSET (objfile->section_offsets,
-						SECT_OFF_TEXT (objfile)));
+				    + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
 	  add_symbol_to_list (sym, get_global_symbols ());
 	  break;
 
@@ -1621,8 +1616,7 @@ process_coff_symbol (struct coff_symbol *cs,
 	  SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
 	  SET_SYMBOL_VALUE_ADDRESS (sym,
 				    (CORE_ADDR) cs->c_value
-				    + ANOFFSET (objfile->section_offsets,
-						SECT_OFF_TEXT (objfile)));
+				    + objfile->section_offsets[SECT_OFF_TEXT (objfile)]);
 	  if (within_function)
 	    {
 	      /* Static symbol of local scope.  */