This patch adds a new third-party library that implements an ELF dynamic linker.

third_party/crazy_linker/crazy_linker/src/linker_phdr.h

Index: third_party/crazy_linker/crazy_linker/src/linker_phdr.h
diff --git a/third_party/crazy_linker/crazy_linker/src/linker_phdr.h b/third_party/crazy_linker/crazy_linker/src/linker_phdr.h
new file mode 100644
index 0000000000000000000000000000000000000000..b31dde623762647029474ad884930cb0eb5416dc
--- /dev/null
+++ b/third_party/crazy_linker/crazy_linker/src/linker_phdr.h
@@ -0,0 +1,90 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef LINKER_PHDR_H
+#define LINKER_PHDR_H
+
+/* Declarations related to the ELF program header table and segments.
+ *
+ * The design goal is to provide an API that is as close as possible
+ * to the ELF spec, and does not depend on linker-specific data
+ * structures (e.g. the exact layout of struct soinfo).
+ */
+
+#include "elf_traits.h"
+
+size_t
+phdr_table_get_load_size(const ELF::Phdr* phdr_table,
+                         size_t phdr_count,
+                         ELF::Addr* min_vaddr = NULL,
+                         ELF::Addr* max_vaddr = NULL);
+
+int
+phdr_table_protect_segments(const ELF::Phdr* phdr_table,
+                            int              phdr_count,
+                            ELF::Addr        load_bias);
+
+int
+phdr_table_unprotect_segments(const ELF::Phdr* phdr_table,
+                              int              phdr_count,
+                              ELF::Addr        load_bias);
+
+int
+phdr_table_get_relro_info(const ELF::Phdr* phdr_table,
+                          int              phdr_count,
+                          ELF::Addr        load_bias,
+                          ELF::Addr*       relro_start,
+                          ELF::Addr*       relro_size);
+
+int
+phdr_table_protect_gnu_relro(const ELF::Phdr* phdr_table,
+                             int              phdr_count,
+                             ELF::Addr        load_bias);
+
+
+#ifdef __arm__
+int
+phdr_table_get_arm_exidx(const ELF::Phdr* phdr_table,
+                         int              phdr_count,
+                         ELF::Addr        load_bias,
+                         ELF::Addr**      arm_exidx,
+                         unsigned*        arm_exidix_count);
+#endif
+
+void
+phdr_table_get_dynamic_section(const ELF::Phdr* phdr_table,
+                               int              phdr_count,
+                               ELF::Addr        load_bias,
+                               ELF::Dyn**       dynamic,
+                               size_t*          dynamic_count,
+                               ELF::Word*       dynamic_flags);
+
+#endif /* LINKER_PHDR_H */