From: Nick Clifton <nickc@redhat.com>
Date: Fri, 16 Oct 2009 15:15:39 +0000 (+0000)
Subject:         * emultempl/pe.em (OPTION_EXCLUDE_ALL_SYMBOLS): New macro.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2927aacaee356e861452258500e0b7ace0449977;p=binutils-gdb.git

    * emultempl/pe.em (OPTION_EXCLUDE_ALL_SYMBOLS): New macro.
        (gld${EMULATION_NAME}_add_options): Add new --exclude-all-symbols option
        to exclude all symbols from automatic export.
        (gld_${EMULATION_NAME}_list_options): Describe it.
        (gld${EMULATION_NAME}_handle_option): Handle it.
        * emultempl/pep.em: Likewise to all the above.
        * pe-dll.c (pe_dll_exclude_all_symbols): New variable.
        (process_def_file_and_drectve): Use it.
        * pe-dll.h (pe_dll_exclude_all_symbols): Declare.
        * pep-dll.c (pep_dll_exclude_all_symbols): Define pep_ alias.
        * pep-dll.h (pe_dll_exclude_all_symbols): Declare.
        * NEWS: Mention the new feature.
        * ld.texinfo: Document the new command line switch.
---

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 89c60527f98..f755793f551 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,19 @@
+2009-10-16  Dimitry Gorbachev  <d.g.gorbachev@gmail.com>
+
+	* emultempl/pe.em (OPTION_EXCLUDE_ALL_SYMBOLS): New macro.
+	(gld${EMULATION_NAME}_add_options): Add new --exclude-all-symbols option
+	to exclude all symbols from automatic export.
+	(gld_${EMULATION_NAME}_list_options): Describe it.
+	(gld${EMULATION_NAME}_handle_option): Handle it.
+	* emultempl/pep.em: Likewise to all the above.
+	* pe-dll.c (pe_dll_exclude_all_symbols): New variable.
+	(process_def_file_and_drectve): Use it.
+	* pe-dll.h (pe_dll_exclude_all_symbols): Declare.
+	* pep-dll.c (pep_dll_exclude_all_symbols): Define pep_ alias.
+	* pep-dll.h (pe_dll_exclude_all_symbols): Declare.
+	* NEWS: Mention the new feature.
+	* ld.texinfo: Document the new command line switch.
+
 2009-10-14  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* ldlex.l (yy_input): Remove second argument and return the value
diff --git a/ld/NEWS b/ld/NEWS
index 86b74cf497c..76b674972c0 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,5 +1,8 @@
 -*- text -*-
 
+* Add --exlcude-all-symbols option to PE based linkers.  This prevents all
+  symbols from automatically being exported.
+
 * Add support for the Renesas RX processor.
 
 Changes in 2.20:
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em
index 788818d657f..d233bd1f9b0 100644
--- a/ld/emultempl/pe.em
+++ b/ld/emultempl/pe.em
@@ -196,7 +196,8 @@ fragment <<EOF
 #define OPTION_OUT_DEF			(OPTION_SUPPORT_OLD_CODE + 1)
 #define OPTION_EXPORT_ALL		(OPTION_OUT_DEF + 1)
 #define OPTION_EXCLUDE_SYMBOLS		(OPTION_EXPORT_ALL + 1)
-#define OPTION_KILL_ATS			(OPTION_EXCLUDE_SYMBOLS + 1)
+#define OPTION_EXCLUDE_ALL_SYMBOLS	(OPTION_EXCLUDE_SYMBOLS + 1)
+#define OPTION_KILL_ATS			(OPTION_EXCLUDE_ALL_SYMBOLS + 1)
 #define OPTION_STDCALL_ALIASES		(OPTION_KILL_ATS + 1)
 #define OPTION_ENABLE_STDCALL_FIXUP	(OPTION_STDCALL_ALIASES + 1)
 #define OPTION_DISABLE_STDCALL_FIXUP	(OPTION_ENABLE_STDCALL_FIXUP + 1)
@@ -276,6 +277,7 @@ gld${EMULATION_NAME}_add_options
     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
     {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
     {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
+    {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
     {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
     {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
     {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
@@ -389,6 +391,7 @@ gld_${EMULATION_NAME}_list_options (FILE *file)
   fprintf (file, _("  --disable-stdcall-fixup            Don't link _sym to _sym@nn\n"));
   fprintf (file, _("  --enable-stdcall-fixup             Link _sym to _sym@nn without warnings\n"));
   fprintf (file, _("  --exclude-symbols sym,sym,...      Exclude symbols from automatic export\n"));
+  fprintf (file, _("  --exclude-all-symbols              Exclude all symbols from automatic export\n"));
   fprintf (file, _("  --exclude-libs lib,lib,...         Exclude libraries from automatic export\n"));
   fprintf (file, _("  --exclude-modules-for-implib mod,mod,...\n"));
   fprintf (file, _("                                     Exclude objects, archive members from auto\n"));
@@ -669,6 +672,9 @@ gld${EMULATION_NAME}_handle_option (int optc)
     case OPTION_EXCLUDE_SYMBOLS:
       pe_dll_add_excludes (optarg, EXCLUDESYMS);
       break;
+    case OPTION_EXCLUDE_ALL_SYMBOLS:
+      pe_dll_exclude_all_symbols = 1;
+      break;
     case OPTION_EXCLUDE_LIBS:
       pe_dll_add_excludes (optarg, EXCLUDELIBS);
       break;
diff --git a/ld/emultempl/pep.em b/ld/emultempl/pep.em
index 90af02052df..ff0c589dce4 100644
--- a/ld/emultempl/pep.em
+++ b/ld/emultempl/pep.em
@@ -158,6 +158,7 @@ enum options
   OPTION_OUT_DEF,
   OPTION_EXPORT_ALL,
   OPTION_EXCLUDE_SYMBOLS,
+  OPTION_EXCLUDE_ALL_SYMBOLS,
   OPTION_KILL_ATS,
   OPTION_STDCALL_ALIASES,
   OPTION_ENABLE_STDCALL_FIXUP,
@@ -227,6 +228,7 @@ gld${EMULATION_NAME}_add_options
     {"output-def", required_argument, NULL, OPTION_OUT_DEF},
     {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
     {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
+    {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
     {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
     {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
     {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
@@ -334,6 +336,7 @@ gld_${EMULATION_NAME}_list_options (FILE *file)
   fprintf (file, _("  --disable-stdcall-fixup            Don't link _sym to _sym@nn\n"));
   fprintf (file, _("  --enable-stdcall-fixup             Link _sym to _sym@nn without warnings\n"));
   fprintf (file, _("  --exclude-symbols sym,sym,...      Exclude symbols from automatic export\n"));
+  fprintf (file, _("  --exclude-all-symbols              Exclude all symbols from automatic export\n"));
   fprintf (file, _("  --exclude-libs lib,lib,...         Exclude libraries from automatic export\n"));
   fprintf (file, _("  --exclude-modules-for-implib mod,mod,...\n"));
   fprintf (file, _("                                     Exclude objects, archive members from auto\n"));
@@ -609,6 +612,9 @@ gld${EMULATION_NAME}_handle_option (int optc)
     case OPTION_EXCLUDE_SYMBOLS:
       pep_dll_add_excludes (optarg, EXCLUDESYMS);
       break;
+    case OPTION_EXCLUDE_ALL_SYMBOLS:
+      pep_dll_exclude_all_symbols = 1;
+      break;
     case OPTION_EXCLUDE_LIBS:
       pep_dll_add_excludes (optarg, EXCLUDELIBS);
       break;
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 21ff9cd6299..4899d613d59 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -2224,6 +2224,11 @@ Specifies a list of symbols which should not be automatically
 exported.  The symbol names may be delimited by commas or colons.
 [This option is specific to the i386 PE targeted port of the linker]
 
+@kindex --exclude-all-symbols
+@item --exclude-all-symbols
+Specifies no symbols should be automatically exported.
+[This option is specific to the i386 PE targeted port of the linker]
+
 @kindex --file-alignment
 @item --file-alignment
 Specify the file alignment.  Sections in the file will always begin at
diff --git a/ld/pe-dll.c b/ld/pe-dll.c
index f615b2d2bfc..ce5d6a39fbb 100644
--- a/ld/pe-dll.c
+++ b/ld/pe-dll.c
@@ -149,6 +149,7 @@ static void add_bfd_to_link (bfd *, const char *, struct bfd_link_info *);
 
 def_file * pe_def_file = 0;
 int pe_dll_export_everything = 0;
+int pe_dll_exclude_all_symbols = 0;
 int pe_dll_do_default_excludes = 1;
 int pe_dll_kill_ats = 0;
 int pe_dll_stdcall_aliases = 0;
@@ -664,14 +665,15 @@ process_def_file_and_drectve (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *
 	}
     }
 
-  /* If we are not building a DLL, when there are no exports
-     we do not build an export table at all.  */
-  if (!pe_dll_export_everything && pe_def_file->num_exports == 0
-      && info->executable)
+  /* If we are building an executable and there is nothing
+     to export, we do not build an export table at all.  */
+  if (info->executable && pe_def_file->num_exports == 0
+      && (!pe_dll_export_everything || pe_dll_exclude_all_symbols))
     return;
 
   /* Now, maybe export everything else the default way.  */
-  if (pe_dll_export_everything || pe_def_file->num_exports == 0)
+  if ((pe_dll_export_everything || pe_def_file->num_exports == 0)
+      && !pe_dll_exclude_all_symbols)
     {
       for (b = info->input_bfds; b; b = b->link_next)
 	{
diff --git a/ld/pe-dll.h b/ld/pe-dll.h
index 932bc81e562..a5ae9fb508e 100644
--- a/ld/pe-dll.h
+++ b/ld/pe-dll.h
@@ -29,6 +29,7 @@
 
 extern def_file *pe_def_file;
 extern int pe_dll_export_everything;
+extern int pe_dll_exclude_all_symbols;
 extern int pe_dll_do_default_excludes;
 extern int pe_dll_kill_ats;
 extern int pe_dll_stdcall_aliases;
@@ -67,7 +68,6 @@ extern void pe_create_import_fixup
 extern bfd_boolean pe_bfd_is_dll
   (bfd *);
 extern void pe_output_file_set_long_section_names
-  (bfd *abfd);
-
+  (bfd *);
 
 #endif /* PE_DLL_H */
diff --git a/ld/pep-dll.c b/ld/pep-dll.c
index 8f7cc99513a..3d8882dcb41 100644
--- a/ld/pep-dll.c
+++ b/ld/pep-dll.c
@@ -29,6 +29,7 @@
 #define pe_dll_compat_implib        pep_dll_compat_implib
 #define pe_dll_extra_pe_debug       pep_dll_extra_pe_debug
 #define pe_dll_export_everything    pep_dll_export_everything
+#define pe_dll_exclude_all_symbols  pep_dll_exclude_all_symbols
 #define pe_dll_do_default_excludes  pep_dll_do_default_excludes
 #define pe_dll_kill_ats             pep_dll_kill_ats
 #define pe_dll_stdcall_aliases      pep_dll_stdcall_aliases
diff --git a/ld/pep-dll.h b/ld/pep-dll.h
index 5840ccede53..7d441ea22a0 100644
--- a/ld/pep-dll.h
+++ b/ld/pep-dll.h
@@ -29,6 +29,7 @@
 
 extern def_file * pep_def_file;
 extern int pep_dll_export_everything;
+extern int pep_dll_exclude_all_symbols;
 extern int pep_dll_do_default_excludes;
 extern int pep_dll_kill_ats;
 extern int pep_dll_stdcall_aliases;
@@ -54,7 +55,6 @@ extern void pep_walk_relocs_of_symbol
   (struct bfd_link_info *, const char *, int (*) (arelent *, asection *));
 extern void pep_create_import_fixup  (arelent * rel, asection *, bfd_vma);
 extern bfd_boolean pep_bfd_is_dll  (bfd *);
-extern void pep_output_file_set_long_section_names
-  (bfd *abfd);
+extern void pep_output_file_set_long_section_names (bfd *);
 
 #endif /* PEP_DLL_H */