From: Holger Lubitz <hal@duncan.ol.sub.de>
Date: Wed, 1 Aug 2007 22:27:54 +0000 (+0200)
Subject: define __pure and __const
X-Git-Tag: v0.9.3~101^2^2^2~19
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd619a1eec451f440c109122cd41790e0a3f70ee;p=thirdparty%2Fipxe.git

define __pure and __const
---

diff --git a/src/include/compiler.h b/src/include/compiler.h
index b130f28fd..e79f9fb2d 100644
--- a/src/include/compiler.h
+++ b/src/include/compiler.h
@@ -279,6 +279,18 @@ extern void dbg_hex_dump_da ( unsigned long dispaddr,
 /** Apply standard C calling conventions */
 #define __cdecl __attribute__ (( cdecl , regparm(0) ))
 
+/**
+ * Declare a function as pure - i.e. without side effects
+ */
+#define __pure __attribute__ (( pure ))
+
+/**
+ * Declare a function as const - i.e. it does not access global memory
+ * (including dereferencing pointers passed to it) at all.
+ * Must also not call any non-const functions.
+ */
+#define __const __attribute__ (( const ))
+
 /**
  * Declare a function as used.
  *