X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Fcoffgen.c;h=53aaf4fbc510f956fe877ac93e17e8b77f82db81;hb=1865dcb816777a2805861caebdb8439db213789d;hp=df413833bd3c6251a537229a7df5905d8dd50ed8;hpb=252b5132c753830d5fd56823373aed85f2a0db63;p=deliverable%2Fbinutils-gdb.git

diff --git a/bfd/coffgen.c b/bfd/coffgen.c
index df413833bd..53aaf4fbc5 100644
--- a/bfd/coffgen.c
+++ b/bfd/coffgen.c
@@ -1,5 +1,5 @@
 /* Support for the generic parts of COFF, for BFD.
-   Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998
+   Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999
    Free Software Foundation, Inc.
    Written by Cygnus Support.
 
@@ -559,7 +559,7 @@ coff_count_linenumbers (abfd)
 /*ARGSUSED*/
 coff_symbol_type *
 coff_symbol_from (ignore_abfd, symbol)
-     bfd *ignore_abfd;
+     bfd *ignore_abfd ATTRIBUTE_UNUSED;
      asymbol *symbol;
 {
   if (bfd_asymbol_flavour (symbol) != bfd_target_coff_flavour)
@@ -594,6 +594,7 @@ fixup_symbol_value (abfd, coff_symbol_ptr, syment)
       syment->n_scnum = N_UNDEF;
       syment->n_value = 0;
     }
+  /* FIXME: Do we need to handle the absolute section here?  */
   else
     {
       if (coff_symbol_ptr->symbol.section)
@@ -1351,7 +1352,7 @@ coff_write_linenumbers (abfd)
 /*ARGSUSED */
 alent *
 coff_get_lineno (ignore_abfd, symbol)
-     bfd *ignore_abfd;
+     bfd *ignore_abfd ATTRIBUTE_UNUSED;
      asymbol *symbol;
 {
   return coffsymbol (symbol)->lineno;
@@ -1746,10 +1747,26 @@ coff_get_normalized_symtab (abfd)
 	    }
 	  else
 	    {
-	      /* ordinary short filename, put into memory anyway */
-	      internal_ptr->u.syment._n._n_n._n_offset = (long)
-		copy_name (abfd, (internal_ptr + 1)->u.auxent.x_file.x_fname,
-			   FILNMLEN);
+	      /* Ordinary short filename, put into memory anyway.  The
+                 Microsoft PE tools sometimes store a filename in
+                 multiple AUX entries.  */
+	      if (internal_ptr->u.syment.n_numaux > 1
+		  && coff_data (abfd)->pe)
+		{
+		  internal_ptr->u.syment._n._n_n._n_offset =
+		    ((long)
+		     copy_name (abfd,
+				(internal_ptr + 1)->u.auxent.x_file.x_fname,
+				internal_ptr->u.syment.n_numaux * symesz));
+		}
+	      else
+		{
+		  internal_ptr->u.syment._n._n_n._n_offset =
+		    ((long)
+		     copy_name (abfd,
+				(internal_ptr + 1)->u.auxent.x_file.x_fname,
+				FILNMLEN));
+		}
 	    }
 	}
       else
@@ -1847,8 +1864,8 @@ coff_make_empty_symbol (abfd)
 asymbol *
 coff_bfd_make_debug_symbol (abfd, ptr, sz)
      bfd *abfd;
-     PTR ptr;
-     unsigned long sz;
+     PTR ptr ATTRIBUTE_UNUSED;
+     unsigned long sz ATTRIBUTE_UNUSED;
 {
   coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, sizeof (coff_symbol_type));
   if (new == NULL)
@@ -2095,7 +2112,7 @@ coff_print_symbol (abfd, filep, symbol, how)
 
 boolean
 _bfd_coff_is_local_label_name (abfd, name)
-     bfd *abfd;
+     bfd *abfd ATTRIBUTE_UNUSED;
      const char *name;
 {
   return name[0] == '.' && name[1] == 'L';
@@ -2190,9 +2207,11 @@ coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
 		}
 	    }
 
+	  /* We use <= MAXDIFF here so that if we get a zero length
+             file, we actually use the next file entry.  */
 	  if (p2 < pend
 	      && offset + sec_vma >= (bfd_vma) p2->u.syment.n_value
-	      && offset + sec_vma - (bfd_vma) p2->u.syment.n_value < maxdiff)
+	      && offset + sec_vma - (bfd_vma) p2->u.syment.n_value <= maxdiff)
 	    {
 	      *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
 	      maxdiff = offset + sec_vma - p2->u.syment.n_value;
@@ -2229,6 +2248,8 @@ coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
 
   if (section->lineno != NULL)
     {
+      bfd_vma last_value = 0;
+
       l = &section->lineno[i];
 
       for (; i < section->lineno_count; i++)
@@ -2240,6 +2261,7 @@ coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
 	      if (coff->symbol.value > offset)
 		break;
 	      *functionname_ptr = coff->symbol.name;
+	      last_value = coff->symbol.value;
 	      if (coff->native)
 		{
 		  combined_entry_type *s = coff->native;
@@ -2268,6 +2290,20 @@ coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
 	    }
 	  l++;
 	}
+
+      /* If we fell off the end of the loop, then assume that this
+	 symbol has no line number info.  Otherwise, symbols with no
+	 line number info get reported with the line number of the
+	 last line of the last symbol which does have line number
+	 info.  We use 0x100 as a slop to account for cases where the
+	 last line has executable code.  */
+      if (i >= section->lineno_count
+	  && last_value != 0
+	  && offset - last_value > 0x100)
+	{
+	  *functionname_ptr = NULL;
+	  *line_ptr = 0;
+	}
     }
 
   /* Cache the results for the next call.  */