constify elfNN_bed

elfNN_bed was made writable as an expedient means of communicating
ld -z max-page-size and ld -z common-page-size values to BFD linker
code, and even for objcopy to communicate segment alignment between
copy_private_bfd_data, rewrite_elf_program_header and
assign_file_positions_for_load_sections.  Some time later elfNN_bed
elf_osabi was written by gas.  It turns out none of these
modifications to elfNN_bed was necessary, so make it const again.

include/
	* bfdlink.h (struct bfd_link_info): Add maxpagesize and
	commonpagesize.
bfd/
	* elfxx-target.h (elfNN_bed): Constify.
	* bfd.c (bfd_elf_set_pagesize): Delete.
	(bfd_emul_set_maxpagesize, bfd_emul_set_commonpagesize): Delete.
	* elf.c (get_program_header_size): Get commonpagesize from
	link info.
	(_bfd_elf_map_sections_to_segments): Get maxpagesize from link info.
	(assign_file_positions_for_load_sections): Likewise.
	(assign_file_positions_for_non_load_sections): Likewise.
	(rewrite_elf_program_header): Add maxpagesize param.  Set map_p_align.
	(copy_private_bfd_data): Don't call bfd_elf_set_maxpagesize.
	Instead pass maxpagesize to rewrite_elf_program_header.
	* elf32-nds32.c (relax_range_measurement): Add link_info param.
	Get maxpagesize from link_info.  Adjust caller.
	* bfd-in2.h: Regenerate.
gas/
	* config/obj-elf.c (obj_elf_section): Don't set elf_osabi here.
	(obj_elf_type): Likewise.
ld/
	* ld.h (ld_config_type): Delete maxpagesize and commonpagesize.
	* emultempl/elf.em: Use link_info rather than config
	for maxpagesize and commonpagesize.
	* emultempl/ppc32elf.em: Likewise.
	* ldexp.c (fold_binary, fold_name): Likewise.
	* ldemul.c (after_parse_default): Likewise.
	(set_output_arch_default): Don't call bfd_emul_set_maxpagesize
	or bfd_emul_set_commonpagesize.

6 files changed, 26 insertions, 23 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 9a0ff59..46acbd9 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,14 @@
+2020-12-16  Alan Modra  <amodra@gmail.com>
+
+	* ld.h (ld_config_type): Delete maxpagesize and commonpagesize.
+	* emultempl/elf.em: Use link_info rather than config
+	for maxpagesize and commonpagesize.
+	* emultempl/ppc32elf.em: Likewise.
+	* ldexp.c (fold_binary, fold_name): Likewise.
+	* ldemul.c (after_parse_default): Likewise.
+	(set_output_arch_default): Don't call bfd_emul_set_maxpagesize
+	or bfd_emul_set_commonpagesize.
+
 2020-12-15  Vivek Das Mohapatra  <vivek@collabora.com>
 
 	* emultempl/elf.em (gld${EMULATION_NAME}_handle_option):
diff --git a/ld/emultempl/elf.em b/ld/emultempl/elf.em
index aa40c78..b915ad5 100644
--- a/ld/emultempl/elf.em
+++ b/ld/emultempl/elf.em
@@ -716,17 +716,18 @@ fragment <<EOF
 	{
 	  char *end;
 
-	  config.maxpagesize = strtoul (optarg + 14, &end, 0);
-	  if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
+	  link_info.maxpagesize = strtoul (optarg + 14, &end, 0);
+	  if (*end
+	      || (link_info.maxpagesize & (link_info.maxpagesize - 1)) != 0)
 	    einfo (_("%F%P: invalid maximum page size \`%s'\n"),
 		   optarg + 14);
 	}
       else if (CONST_STRNEQ (optarg, "common-page-size="))
 	{
 	  char *end;
-	  config.commonpagesize = strtoul (optarg + 17, &end, 0);
+	  link_info.commonpagesize = strtoul (optarg + 17, &end, 0);
 	  if (*end
-	      || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
+	      || (link_info.commonpagesize & (link_info.commonpagesize - 1)) != 0)
 	    einfo (_("%F%P: invalid common page size \`%s'\n"),
 		   optarg + 17);
 	}
diff --git a/ld/emultempl/ppc32elf.em b/ld/emultempl/ppc32elf.em
index 0402ffb..9d8e933 100644
--- a/ld/emultempl/ppc32elf.em
+++ b/ld/emultempl/ppc32elf.em
@@ -51,7 +51,7 @@ ppc_after_open_output (void)
     params.emit_stub_syms = (link_info.emitrelocations
 			     || bfd_link_pic (&link_info));
   if (params.pagesize == 0)
-    params.pagesize = config.commonpagesize;
+    params.pagesize = link_info.commonpagesize;
   ppc_elf_link_params (&link_info, &params);
 }
 
diff --git a/ld/ld.h b/ld/ld.h
index 7f7d716..612d530 100644
--- a/ld/ld.h
+++ b/ld/ld.h
@@ -294,12 +294,6 @@ typedef struct
   /* The size of the hash table to use.  */
   unsigned long hash_table_size;
 
-  /* The maximum page size for ELF.  */
-  bfd_vma maxpagesize;
-
-  /* The common page size for ELF.  */
-  bfd_vma commonpagesize;
-
   /* If set, print discarded sections in map file output.  */
   bfd_boolean print_map_discarded;
 
diff --git a/ld/ldemul.c b/ld/ldemul.c
index 920afc8..fc51493 100644
--- a/ld/ldemul.c
+++ b/ld/ldemul.c
@@ -232,11 +232,11 @@ after_parse_default (void)
       if (!is_vma)
 	ldlang_add_undef (entry_symbol.name, entry_from_cmdline);
     }
-  if (config.maxpagesize == 0)
-    config.maxpagesize = bfd_emul_get_maxpagesize (default_target);
-  if (config.commonpagesize == 0)
-    config.commonpagesize = bfd_emul_get_commonpagesize (default_target,
-							 link_info.relro);
+  if (link_info.maxpagesize == 0)
+    link_info.maxpagesize = bfd_emul_get_maxpagesize (default_target);
+  if (link_info.commonpagesize == 0)
+    link_info.commonpagesize = bfd_emul_get_commonpagesize (default_target,
+							    link_info.relro);
 }
 
 void
@@ -303,9 +303,6 @@ set_output_arch_default (void)
   /* Set the output architecture and machine if possible.  */
   bfd_set_arch_mach (link_info.output_bfd,
 		     ldfile_output_architecture, ldfile_output_machine);
-
-  bfd_emul_set_maxpagesize (output_target, config.maxpagesize);
-  bfd_emul_set_commonpagesize (output_target, config.commonpagesize);
 }
 
 void
diff --git a/ld/ldexp.c b/ld/ldexp.c
index b4e7c41..905055a 100644
--- a/ld/ldexp.c
+++ b/ld/ldexp.c
@@ -547,8 +547,8 @@ fold_binary (etree_type *tree)
 	  {
 	    if (!seg->used
 		&& config.magic_demand_paged
-		&& config.maxpagesize != 0
-		&& (seg->value % config.maxpagesize) != 0)
+		&& link_info.maxpagesize != 0
+		&& (seg->value % link_info.maxpagesize) != 0)
 	      einfo (_("%P: warning: address of `%s' "
 		       "isn't multiple of maximum page size\n"),
 		     segment_name);
@@ -898,9 +898,9 @@ fold_name (etree_type *tree)
 
     case CONSTANT:
       if (strcmp (tree->name.name, "MAXPAGESIZE") == 0)
-	new_number (config.maxpagesize);
+	new_number (link_info.maxpagesize);
       else if (strcmp (tree->name.name, "COMMONPAGESIZE") == 0)
-	new_number (config.commonpagesize);
+	new_number (link_info.commonpagesize);
       else
 	einfo (_("%F%P:%pS: unknown constant `%s' referenced in expression\n"),
 	       tree, tree->name.name);