Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libdw/libdw_alloc.c b/libdw/libdw_alloc.c
new file mode 100644
index 0000000..d6af23a
--- /dev/null
+++ b/libdw/libdw_alloc.c
@@ -0,0 +1,78 @@
+/* Memory handling for libdw.
+ Copyright (C) 2003, 2004, 2006 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils 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 copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <error.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "libdwP.h"
+#include "system.h"
+
+
+void *
+__libdw_allocate (Dwarf *dbg, size_t minsize, size_t align)
+{
+ size_t size = MAX (dbg->mem_default_size,
+ (align - 1 +
+ 2 * minsize + offsetof (struct libdw_memblock, mem)));
+ struct libdw_memblock *newp = malloc (size);
+ if (newp == NULL)
+ dbg->oom_handler ();
+
+ uintptr_t result = ((uintptr_t) newp->mem + align - 1) & ~(align - 1);
+
+ newp->size = size - offsetof (struct libdw_memblock, mem);
+ newp->remaining = (uintptr_t) newp + size - (result + minsize);
+
+ newp->prev = dbg->mem_tail;
+ dbg->mem_tail = newp;
+
+ return (void *) result;
+}
+
+
+Dwarf_OOM
+dwarf_new_oom_handler (Dwarf *dbg, Dwarf_OOM handler)
+{
+ Dwarf_OOM old = dbg->oom_handler;
+ dbg->oom_handler = handler;
+ return old;
+}
+
+
+void
+__attribute ((noreturn)) attribute_hidden
+__libdw_oom (void)
+{
+ while (1)
+ error (EXIT_FAILURE, ENOMEM, "libdw");
+}