Patch to correctly handle the MIPS case.

It was build up by Yann E. MORIN <yann.morin.1998@anciens.enib.fr> from some

bits gathered from buildroot, which is LGPL v2.1

License for dmalloc is:

 * Permission to use, copy, modify, and distribute this software for

 * any purpose and without fee is hereby granted, provided that the

 * above copyright notice and this permission notice appear in all

 * copies, and that the name of Gray Watson not be used in advertising

 * or publicity pertaining to distribution of the document or software

 * without specific, written prior permission.

 *

 * Gray Watson makes no representations about the suitability of the

 * software described herein for any purpose.  It is provided "as is"

 * without express or implied warranty.

I personnaly believe that the resulting code should therefore be

LGPL v2.1, but don't believe me, ask your lawyers!

diff -dur dmalloc-5.5.2.orig/configure dmalloc-5.5.2/configure

--- dmalloc-5.5.2.orig/configure	2007-05-18 12:15:39.000000000 +0200

+++ dmalloc-5.5.2/configure	2007-05-18 12:15:48.000000000 +0200

@@ -7107,7 +7107,7 @@

 echo $ECHO_N "checking return.h macros work... $ECHO_C" >&6

 if test "$cross_compiling" = yes; then

    cat >>confdefs.h <<\_ACEOF

-#define RETURN_MACROS_WORK 0

+#define RETURN_MACROS_WORK 1

 _ACEOF

  echo "$as_me:$LINENO: result: no" >&5

 echo "${ECHO_T}no" >&6

diff -dur dmalloc-5.5.2.orig/return.h dmalloc-5.5.2/return.h

--- dmalloc-5.5.2.orig/return.h	2007-05-14 19:26:14.000000000 +0200

+++ dmalloc-5.5.2/return.h	2007-05-18 12:15:48.000000000 +0200

@@ -106,26 +106,16 @@

 /*************************************/

 /*

- * For DEC Mips machines running Ultrix

+ * For Mips machines running Linux

  */

 #if __mips

 /*

- * I have no idea how to get inline assembly with the default cc.

- * Anyone know how?

- */

-

-#if 0

-

-/*

  * NOTE: we assume here that file is global.

  *

- * $31 is the frame pointer.  $2 looks to be the return address but maybe

- * not consistently.

+ * $31 is the return address.

  */

-#define GET_RET_ADDR(file)	asm("sw $2, file")

-

-#endif

+#define GET_RET_ADDR(file)	asm("sw $31, %0" : "=m" (file))

 #endif /* __mips */