From b64232cca5353c35c503dfe096afec18ac3c90f3 Mon Sep 17 00:00:00 2001
From: Richard Sandiford <rdsandiford@googlemail.com>
Date: Sat, 14 Mar 2009 09:35:46 +0000
Subject: include/coff/ 	* xcoff.h (XCOFF_EXPALL, XCOFF_EXPFULL): New flags. 
 (xcoff_loader_info): Add auto_export_flags.

bfd/
	* bfd-in.h (bfd_xcoff_size_dynamic_sections): Replace the
	bfd_boolean export_defineds parameter with an unsigned int
	auto_export_flags parameter.
	* bfd-in2.h: Regenerate.
	* xcofflink.c (xcoff_archive_contains_shared_object_p): New function,
	split out from xcoff_build_ldsyms.
	(xcoff_covered_by_expall_p): New function.
	(xcoff_auto_export_p): New function, split out from xcoff_build_ldsyms
	but with extra code to handle -bexpfull and -bexpall.
	(xcoff_mark_auto_exports): New function.
	(xcoff_build_ldsyms): Use xcoff_auto_export_p to decide whether
	a function should be automatically exported.
	(bfd_xcoff_size_dynamic_sections): Replace the export_defineds
	parameter with an auto_export_flags parameter.  Update ldinfo
	accordingly.  Use xcoff_mark_auto_exports to mark all automatically-
	exported symbols.

ld/
	* emultempl/aix.em (auto_export_flags): New variable.
	(explicit_auto_export_flags): Likewise.
	(OPTION_EXPALL, OPTION_EXPFULL): New enum values.
	(OPTION_NOEXPALL, OPTION_NOEXPFULL): Likewise.
	(gld${EMULATION_NAME}_add_options): Add -bexpall, -bexpfull,
	-bnoexpall and -bnoexpfull.
	(gld${EMULATION_NAME}_handle_option): Handle them.
	(gld${EMULATION_NAME}_before_allocation): Update the call to
	bfd_size_dynamic_sections.

ld/testsuite/
	* ld-powerpc/aix-export-1-all.dd, ld-powerpc/aix-export-1-full.dd,
	ld-powerpc/aix-export-1a.s, ld-powerpc/aix-export-1b.s: New tests.
	* ld-powerpc/aix52.exp: Run them.
---
 ld/emultempl/aix.em | 45 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 43 insertions(+), 2 deletions(-)

(limited to 'ld/emultempl')

diff --git a/ld/emultempl/aix.em b/ld/emultempl/aix.em
index a9f3884..8558660 100644
--- a/ld/emultempl/aix.em
+++ b/ld/emultempl/aix.em
@@ -84,6 +84,14 @@ static unsigned short modtype = ('1' << 8) | 'L';
    permitted).  */
 static int textro;
 
+/* A mask of XCOFF_EXPALL and XCOFF_EXPFULL flags, as set by their
+   associated -b and -bno options.  */
+static unsigned int auto_export_flags;
+
+/* A mask of auto_export_flags bits that were explicitly set on the
+   command line.  */
+static unsigned int explicit_auto_export_flags;
+
 /* Whether to implement Unix like linker semantics.  */
 static int unix_ld;
 
@@ -156,6 +164,8 @@ enum
     OPTION_AUTOIMP,
     OPTION_ERNOTOK,
     OPTION_EROK,
+    OPTION_EXPALL,
+    OPTION_EXPFULL,
     OPTION_EXPORT,
     OPTION_IMPORT,
     OPTION_INITFINI,
@@ -164,6 +174,8 @@ enum
     OPTION_MAXSTACK,
     OPTION_MODTYPE,
     OPTION_NOAUTOIMP,
+    OPTION_NOEXPALL,
+    OPTION_NOEXPFULL,
     OPTION_NOSTRCMPCT,
     OPTION_PD,
     OPTION_PT,
@@ -201,6 +213,8 @@ gld${EMULATION_NAME}_add_options
     {"bernotok", no_argument, NULL, OPTION_ERNOTOK},
     {"berok", no_argument, NULL, OPTION_EROK},
     {"berrmsg", no_argument, NULL, OPTION_IGNORE},
+    {"bexpall", no_argument, NULL, OPTION_EXPALL},
+    {"bexpfull", no_argument, NULL, OPTION_EXPFULL},
     {"bexport", required_argument, NULL, OPTION_EXPORT},
     {"bf", no_argument, NULL, OPTION_ERNOTOK},
     {"bgc", no_argument, &gc, 1},
@@ -216,6 +230,8 @@ gld${EMULATION_NAME}_add_options
     {"bM", required_argument, NULL, OPTION_MODTYPE},
     {"bmodtype", required_argument, NULL, OPTION_MODTYPE},
     {"bnoautoimp", no_argument, NULL, OPTION_NOAUTOIMP},
+    {"bnoexpall", no_argument, NULL, OPTION_NOEXPALL},
+    {"bnoexpfull", no_argument, NULL, OPTION_NOEXPFULL},
     {"bnodelcsect", no_argument, NULL, OPTION_IGNORE},
     {"bnoentry", no_argument, NULL, OPTION_IGNORE},
     {"bnogc", no_argument, &gc, 0},
@@ -388,6 +404,16 @@ gld${EMULATION_NAME}_handle_option (int optc)
       link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
       break;
 
+    case OPTION_EXPALL:
+      auto_export_flags |= XCOFF_EXPALL;
+      explicit_auto_export_flags |= XCOFF_EXPALL;
+      break;
+
+    case OPTION_EXPFULL:
+      auto_export_flags |= XCOFF_EXPFULL;
+      explicit_auto_export_flags |= XCOFF_EXPFULL;
+      break;
+
     case OPTION_EXPORT:
       gld${EMULATION_NAME}_read_file (optarg, FALSE);
       break;
@@ -444,6 +470,16 @@ gld${EMULATION_NAME}_handle_option (int optc)
       link_info.static_link = TRUE;
       break;
 
+    case OPTION_NOEXPALL:
+      auto_export_flags &= ~XCOFF_EXPALL;
+      explicit_auto_export_flags |= XCOFF_EXPALL;
+      break;
+
+    case OPTION_NOEXPFULL:
+      auto_export_flags &= ~XCOFF_EXPFULL;
+      explicit_auto_export_flags |= XCOFF_EXPFULL;
+      break;
+
     case OPTION_NOSTRCMPCT:
       link_info.traditional_format = TRUE;
       break;
@@ -624,7 +660,7 @@ gld${EMULATION_NAME}_before_allocation (void)
     ".data",
     ".bss"
   };
-  unsigned int i;
+  unsigned int i, flags;
 
   /* Handle the import and export files, if any.  */
   for (fl = import_files; fl != NULL; fl = fl->next)
@@ -710,11 +746,16 @@ gld${EMULATION_NAME}_before_allocation (void)
 	}
     }
 
+  /* Default to -bexpfull for SVR4-like semantics.  */
+  flags = (unix_ld ? XCOFF_EXPFULL : 0);
+  flags &= ~explicit_auto_export_flags;
+  flags |= auto_export_flags;
+
   /* Let the XCOFF backend set up the .loader section.  */
   if (!bfd_xcoff_size_dynamic_sections
       (link_info.output_bfd, &link_info, libpath, entry_symbol.name, file_align,
        maxstack, maxdata, gc && !unix_ld ? TRUE : FALSE,
-       modtype,	textro ? TRUE : FALSE, unix_ld, special_sections,
+       modtype, textro ? TRUE : FALSE, flags, special_sections,
        rtld ? TRUE : FALSE))
     einfo ("%P%F: failed to set dynamic section sizes: %E\n");
 
-- 
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