Apply patch from Thomas de Lellis to allow nm to distinguish between weak

function symbols and weak data symbols.

3 files changed, 63 insertions, 6 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 9d7c9f6..c2e7498 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,23 @@
-2000-01-27  Thomas de Lellis  <tdel@wrs.com>
+2000-01-27  Thomas de Lellis  <tdel@windriver.com>
+
+        * syms.c (bfd_decode_symclass)
+        Two new class characters were added - 'V' and 'v'.  The
+        meaning of 'W' is now restricted to just weak non-object
+        symbols.  This allows differentiation between, for example,
+        weak functions vs weak objects.  nm for example now dumps:
+        'W' = weak global
+        'w' = weak unresolved
+        'V' = weak global object
+        'v' = weak unresolved object
+
+	(bfd_is_undefined_symclass): New function.  Return true if the
+	given symbol class represents and undefined/unresolved symbol.
+	
+        (bfd_symbol_info): Use bfd_is_undefined_symclass to check for
+	unresolved symbols.
 
+	* bfd-in2.h: Add prototype for bfd_is_undefined_symbol().
+	
         * elf32-arm.h (elf32_arm_get_symbol_type): If a symbol has the
 	STT_ARM_16BIT flag set, but it is not attached to a data object
 	return STT_ARM_16BIT so that it will be treated as code by the
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index a9b981c..9db6ec6 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -2433,6 +2433,9 @@ bfd_print_symbol_vandf PARAMS ((PTR file, asymbol *symbol));
 int 
 bfd_decode_symclass PARAMS ((asymbol *symbol));
 
+boolean
+bfd_is_undefined_symclass PARAMS ((int symclass));
+
 void 
 bfd_symbol_info PARAMS ((asymbol *symbol, symbol_info *ret));
 
diff --git a/bfd/syms.c b/bfd/syms.c
index 676f067..6546f58 100644
--- a/bfd/syms.c
+++ b/bfd/syms.c
@@ -584,14 +584,28 @@ bfd_decode_symclass (symbol)
   if (bfd_is_und_section (symbol->section))
     {
       if (symbol->flags & BSF_WEAK)
-	return 'w';
+	{
+	  /* If weak, determine if it's specifically an object
+	     or non-object weak.  */
+	  if (symbol->flags & BSF_OBJECT)
+	    return 'v';
+	  else
+	    return 'w';
+	}
       else
 	return 'U';
     }
   if (bfd_is_ind_section (symbol->section))
     return 'I';
   if (symbol->flags & BSF_WEAK)
-    return 'W';
+    {
+      /* If weak, determine if it's specifically an object
+	 or non-object weak.  */
+      if (symbol->flags & BSF_OBJECT)
+	return 'V';
+      else
+	return 'W';
+    }
   if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
     return '?';
 
@@ -617,6 +631,26 @@ bfd_decode_symclass (symbol)
 
 /*
 FUNCTION
+	bfd_is_undefined_symclass 
+
+DESCRIPTION
+	Returns non-zero if the class symbol returned by
+	bfd_decode_symclass represents an undefined symbol.
+	Returns zero otherwise.
+
+SYNOPSIS
+	boolean bfd_is_undefined_symclass (int symclass);
+*/
+
+boolean
+bfd_is_undefined_symclass (symclass)
+     int symclass;
+{
+  return symclass == 'U' || symclass == 'w' || symclass == 'v';
+}
+
+/*
+FUNCTION
 	bfd_symbol_info
 
 DESCRIPTION
@@ -634,10 +668,12 @@ bfd_symbol_info (symbol, ret)
      symbol_info *ret;
 {
   ret->type = bfd_decode_symclass (symbol);
-  if (ret->type != 'U' && ret->type != 'w')
-    ret->value = symbol->value + symbol->section->vma;
-  else
+  
+  if (bfd_is_undefined_symclass (ret->type))
     ret->value = 0;
+  else
+    ret->value = symbol->value + symbol->section->vma;
+  
   ret->name = symbol->name;
 }