4 files changed, 160 insertions, 4 deletions
diff --git a/gnuradio-core/src/lib/filter/gr_fir_fff_altivec.cc b/gnuradio-core/src/lib/filter/gr_fir_fff_altivec.cc
index 3d767f13e..8fc5bcd7d 100644
--- a/gnuradio-core/src/lib/filter/gr_fir_fff_altivec.cc
+++ b/gnuradio-core/src/lib/filter/gr_fir_fff_altivec.cc
@@ -23,12 +23,12 @@
 #include <config.h>
 #endif
 #include <gr_fir_fff_altivec.h>
-#include <stdlib.h>
 #include <stdexcept>
 #include <assert.h>
 #include <gr_math.h>
 #include <gr_altivec.h>
 #include <dotprod_fff_altivec.h>
+#include "posix_memalign.h"
 
 gr_fir_fff_altivec::gr_fir_fff_altivec()
   : gr_fir_fff_generic(),
diff --git a/gnuradio-core/src/lib/missing/Makefile.am b/gnuradio-core/src/lib/missing/Makefile.am
index 2285d9b13..08e521cb3 100644
--- a/gnuradio-core/src/lib/missing/Makefile.am
+++ b/gnuradio-core/src/lib/missing/Makefile.am
@@ -1,5 +1,5 @@
 #
-# Copyright 2003,2004 Free Software Foundation, Inc.
+# Copyright 2003,2004,2008 Free Software Foundation, Inc.
 # 
 # This file is part of GNU Radio
 # 
@@ -21,13 +21,18 @@
 
 include $(top_srcdir)/Makefile.common
 
+AM_CPPFLAGS = $(GNURADIO_INCLUDES) $(WITH_INCLUDES)
+
 EXTRA_DIST = 			\
 	getopt.h 		\
 	getopt.c 		\
 	gettimeofday.c 		\
-	usleep.c
+	posix_memalign.cc	\
+	posix_memalign.h	\
+	usleep.c		
 
 noinst_LTLIBRARIES = libmissing.la
 
 libmissing_la_SOURCES = 	\
-	bug_work_around_8.cc	
+	bug_work_around_8.cc	\
+	posix_memalign.cc	
diff --git a/gnuradio-core/src/lib/missing/posix_memalign.cc b/gnuradio-core/src/lib/missing/posix_memalign.cc
new file mode 100644
index 000000000..50022d96f
--- /dev/null
+++ b/gnuradio-core/src/lib/missing/posix_memalign.cc
@@ -0,0 +1,109 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "posix_memalign.h"
+
+#ifndef HAVE_POSIX_MEMALIGN
+
+/* emulate posix_memalign functionality, to some degree */
+
+#include <errno.h>
+#include "gr_pagesize.h"
+
+int posix_memalign
+(void **memptr, size_t alignment, size_t size)
+{
+  /* emulate posix_memalign functionality, to some degree */
+
+  /* make sure the return handle is valid; return "bad address" if not valid */
+  if (memptr == 0)
+    return (EFAULT);
+  *memptr = (void*) 0;
+
+  /* make sure 'alignment' is a power of 2
+   * and multiple of sizeof (void*)
+   */
+
+  /* make sure 'alignment' is a multiple of sizeof (void*) */
+  if ((alignment % sizeof (void*)) != 0)
+    return (EINVAL);
+
+  /* make sure 'alignment' is a power of 2 */
+  if ((alignment & (alignment - 1)) != 0)
+    return (EINVAL);
+
+  /* good alignment */
+
+#if (ALIGNED_MALLOC != 0)
+
+  /* if 'malloc' is known to be aligned, and the desired 'alignment'
+   * matches is <= that provided by 'malloc', then use 'malloc'.  This
+   * works on, e.g., Darwin 8 & 9: for which malloc is 16-byte aligned.
+   */
+  size_t am = (size_t) ALIGNED_MALLOC;
+  if (alignment <= am) {
+    /* make sure ALIGNED_MALLOC is a power of 2, to guarantee that the
+     * alignment is correct (since 'alignment' must be a power of 2).
+     */
+    if ((am & (am - 1)) != 0)
+      return (EINVAL);
+    /* good malloc alignment */
+    *memptr = malloc (size);
+  }
+
+#endif /* (ALIGNED_MALLOC != 0) */
+#ifdef HAVE_VALLOC
+
+  if (*memptr == (void*) 0) {
+    /* try valloc if it exists */
+    /* cheap and easy way to make sure alignment is met, so long as it
+     * is <= pagesize () */
+    if (alignment <= (size_t) gr_pagesize ()) {
+      *memptr = valloc (size);
+    }
+  }
+
+#endif /* HAVE_VALLOC */
+
+#if (ALIGNED_MALLOC == 0) && !defined (HAVE_VALLOC)
+  /* no posix_memalign, valloc, and malloc isn't known to be aligned
+   * (enough for the input arguments); no idea what to do.
+   */
+
+#error gnuradio-core/src/libmissing/posix_memalign.cc: Cannot find a way to alloc aligned memory.
+
+#endif
+
+  /* if the pointer wasn't allocated properly, return that there was
+   * not enough memory to allocate; otherwise, return OK (0).
+   */
+  if (*memptr == (void*) 0)
+    return (ENOMEM);
+  else
+    return (0);
+};
+
+#endif /* ! HAVE_POSIX_MEMALIGN */
diff --git a/gnuradio-core/src/lib/missing/posix_memalign.h b/gnuradio-core/src/lib/missing/posix_memalign.h
new file mode 100644
index 000000000..1be4bfc5b
--- /dev/null
+++ b/gnuradio-core/src/lib/missing/posix_memalign.h
@@ -0,0 +1,42 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _POSIX_MEMALIGN_H_
+#define _POSIX_MEMALIGN_H_
+
+#include <stdlib.h>
+
+#ifndef HAVE_POSIX_MEMALIGN
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+extern int posix_memalign (void** memptr, size_t alignment, size_t size);
+
+#ifdef	__cplusplus
+};
+#endif
+
+#endif /* ! HAVE_POSIX_MEMALIGN */
+
+#endif /* _POSIX_MEMALIGN_H_ */