elfcpp patch committed: Add comment for STT_GNU_IFUNC

elfcpp patch committed: Add comment for STT_GNU_IFUNC

[Ian Lance Taylor]

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I committed this patch to elfcpp.h to add a comment for STT_GNU_IFUNC.

Ian


2012-01-27  Ian Lance Taylor  <iant@google.com>

	* elfcpp.h (STT_GNU_IFUNC): Add comment.



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Index: elfcpp.h
===================================================================
RCS file: /cvs/src/src/elfcpp/elfcpp.h,v
retrieving revision 1.33
diff -u -r1.33 elfcpp.h
--- elfcpp.h	3 Jul 2011 13:37:07 -0000	1.33
+++ elfcpp.h	28 Jan 2012 00:58:48 -0000
@@ -1,6 +1,7 @@
 // elfcpp.h -- main header file for elfcpp    -*- C++ -*-
 
-// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
+// Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of elfcpp.
@@ -513,8 +514,12 @@
   STT_FILE = 4,
   STT_COMMON = 5,
   STT_TLS = 6,
-  STT_LOOS = 10,
+
+  // GNU extension: symbol value points to a function which is called
+  // at runtime to determine the final value of the symbol.
   STT_GNU_IFUNC = 10,
+
+  STT_LOOS = 10,
   STT_HIOS = 12,
   STT_LOPROC = 13,
   STT_HIPROC = 15,

Re: elfcpp patch committed: Add comment for STT_GNU_IFUNC

[Andreas Schwab]

Ian Lance Taylor <iant@google.com> writes:

> @@ -513,8 +514,12 @@
>    STT_FILE = 4,
>    STT_COMMON = 5,
>    STT_TLS = 6,
> -  STT_LOOS = 10,
> +
> +  // GNU extension: symbol value points to a function which is called
> +  // at runtime to determine the final value of the symbol.
>    STT_GNU_IFUNC = 10,
> +
> +  STT_LOOS = 10,
>    STT_HIOS = 12,

STT_LOOS/STT_HIOS are marking the OS-specific value region, and
STT_GNU_IFUNC is part of it.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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