From: Nick Clifton <nickc@redhat.com>
Date: Mon, 3 Jul 2000 18:45:18 +0000 (+0000)
Subject: Turn a weak symbol into	an external symbol for a non-shared, non-relocatable
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=d6c751d0090ecdf7ae4c18f007a316f8c5cf8c36;p=pf3gnuchains%2Fpf3gnuchains3x.git

Turn a weak symbol into	an external symbol for a non-shared, non-relocatable
link.
---

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 3591928dff..e988660a00 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,15 @@
+2000-07-03  Mark Elbrecht  <snowball3@bigfoot.com>
+
+	* cofflink.c (_bfd_coff_write_global_sym): Turn a weak symbol into
+	an external symbol for a non-shared, non-relocatable link.
+	
+2000-07-03  Nick Clifton  <nickc@redhat.com>
+
+	(IS_EXTERNAL): New macro: Return true if the symbol is an external
+	symbol.
+	(IS_WEAK_EXTERNAL): New macro: Return true if the symbol is a weak
+	external symbol.
+	
 2000-07-03  Kazu Hirata  <kazu@hxi.com>
 
 	* reloc16.c: Fix formatting.
diff --git a/bfd/cofflink.c b/bfd/cofflink.c
index 01fa2e7b91..8c825968dd 100644
--- a/bfd/cofflink.c
+++ b/bfd/cofflink.c
@@ -40,6 +40,15 @@ static int process_embedded_commands
   PARAMS ((bfd *, struct bfd_link_info *, bfd *));
 static void mark_relocs PARAMS ((struct coff_final_link_info *, bfd *));
 
+/* Return true if SYM is a weak, external symbol.  */
+#define IS_WEAK_EXTERNAL(abfd, sym)			\
+  ((sym).n_sclass == C_WEAKEXT				\
+   || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK))
+
+/* Return true if SYM is an external symbol.  */
+#define IS_EXTERNAL(abfd, sym)				\
+  ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym))
+
 /* Define macros so that the ISFCN, et. al., macros work correctly.
    These macros are defined in include/coff/internal.h in terms of
    N_TMASK, etc.  These definitions require a user to define local
@@ -395,8 +404,7 @@ coff_link_add_symbols (abfd, info)
 	      break;
 	    }
 
-	  if (sym.n_sclass == C_WEAKEXT
-	      || (obj_pe (abfd) && sym.n_sclass == C_NT_WEAK))
+	  if (IS_WEAK_EXTERNAL (abfd, sym))
 	    flags = BSF_WEAK;
 
 	  addit = true;
@@ -1833,12 +1841,8 @@ _bfd_coff_link_input_bfd (finfo, input_bfd)
 	    }
 
 	  /* If doing task linking, convert normal global function symbols to
-	     static functions. */
-
-	  if (finfo->info->task_link
-	      && (isym.n_sclass == C_EXT
-		  || isym.n_sclass == C_WEAKEXT
-		  || (obj_pe (input_bfd) && isym.n_sclass == C_NT_WEAK)))
+	     static functions.  */
+	  if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym))
 	    isym.n_sclass = C_STAT;
 
 	  /* Output the symbol.  */
@@ -2548,18 +2552,23 @@ _bfd_coff_write_global_sym (h, data)
   /* If doing task linking and this is the pass where we convert
      defined globals to statics, then do that conversion now.  If the
      symbol is not being converted, just ignore it and it will be
-     output during a later pass. */
+     output during a later pass.  */
   if (finfo->global_to_static)
     {
-      if (isym.n_sclass != C_EXT
-	  && isym.n_sclass != C_WEAKEXT
-	  && (! obj_pe (output_bfd) || isym.n_sclass != C_NT_WEAK))
-	{
-	  return true;
-	}
+      if (! IS_EXTERNAL (output_bfd, isym))
+	return true;
+
       isym.n_sclass = C_STAT;
     }
 
+  /* When a weak symbol is not overriden by a strong one,
+     turn it into an external symbol when not building a
+     shared or relocateable object.  */
+  if (! finfo->info->shared
+      && ! finfo->info->relocateable
+      && IS_WEAK_EXTERNAL (finfo->output_bfd, isym))
+    isym.n_sclass = C_EXT;
+
   isym.n_numaux = h->numaux;
   
   bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms);