From: José Fonseca <jfonseca@vmware.com>
Date: Sun, 30 May 2010 15:36:08 +0000 (+0100)
Subject: util: Generic pointer to func conversion helper.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6f67a71aada11a097c7c11db8f11cd56557354ab;p=mesa.git

util: Generic pointer to func conversion helper.

That observes strict-aliasing rules.
---

diff --git a/src/gallium/auxiliary/util/u_pointer.h b/src/gallium/auxiliary/util/u_pointer.h
index e1af9f11cb9..ae6f43bff87 100644
--- a/src/gallium/auxiliary/util/u_pointer.h
+++ b/src/gallium/auxiliary/util/u_pointer.h
@@ -98,6 +98,18 @@ align16( void *unaligned )
    return align_pointer( unaligned, 16 );
 }
 
+typedef void (*func_pointer)(void);
+
+static INLINE func_pointer
+pointer_to_func( void *p )
+{
+   union {
+      void *p;
+      func_pointer f;
+   } pf;
+   pf.p = p;
+   return pf.f;
+}
 
 
 #ifdef __cplusplus