Import relocation packer from chromium repo

Bug: 18051137
Change-Id: Ia67fa11da8247e3f86f70a8ce99e6695f2c05423
diff --git a/tools/relocation_packer/relocation_packer.gyp b/tools/relocation_packer/relocation_packer.gyp
new file mode 100644
index 0000000..1e9c1b9
--- /dev/null
+++ b/tools/relocation_packer/relocation_packer.gyp
@@ -0,0 +1,161 @@
+# Copyright 2014 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.
+
+{
+  'variables': {
+    'target_define%': 'TARGET_UNSUPPORTED',
+    'conditions': [
+      [ 'target_arch == "arm"', {
+        'target_define': 'TARGET_ARM',
+      }],
+      [ 'target_arch == "arm64"', {
+        'target_define': 'TARGET_ARM64',
+      }],
+    ],
+  },
+  'targets': [
+    {
+      # GN: //tools/relocation_packer:lib_relocation_packer
+      'target_name': 'lib_relocation_packer',
+      'toolsets': ['host'],
+      'type': 'static_library',
+      'defines': [
+        '<(target_define)',
+      ],
+      'dependencies': [
+        '../../third_party/elfutils/elfutils.gyp:libelf',
+      ],
+      'sources': [
+        'src/debug.cc',
+        'src/delta_encoder.cc',
+        'src/elf_file.cc',
+        'src/leb128.cc',
+        'src/packer.cc',
+        'src/sleb128.cc',
+        'src/run_length_encoder.cc',
+      ],
+    },
+    {
+      # GN: //tools/relocation_packer:relocation_packer
+      'target_name': 'relocation_packer',
+      'toolsets': ['host'],
+      'type': 'executable',
+      'defines': [
+        '<(target_define)',
+      ],
+      'dependencies': [
+        '../../third_party/elfutils/elfutils.gyp:libelf',
+        'lib_relocation_packer',
+      ],
+      'sources': [
+        'src/main.cc',
+      ],
+    },
+    {
+      # GN: //tools/relocation_packer:relocation_packer_unittests
+      'target_name': 'relocation_packer_unittests',
+      'toolsets': ['host'],
+      'type': 'executable',
+      'defines': [
+        '<(target_define)',
+      ],
+      'cflags': [
+        '-DINTERMEDIATE_DIR="<(INTERMEDIATE_DIR)"',
+      ],
+      'dependencies': [
+        '../../testing/gtest.gyp:gtest',
+        'lib_relocation_packer',
+      ],
+      'include_dirs': [
+        '../..',
+      ],
+      'sources': [
+        'src/debug_unittest.cc',
+        'src/delta_encoder_unittest.cc',
+        'src/elf_file_unittest.cc',
+        'src/leb128_unittest.cc',
+        'src/packer_unittest.cc',
+        'src/sleb128_unittest.cc',
+        'src/run_length_encoder_unittest.cc',
+        'src/run_all_unittests.cc',
+      ],
+      'copies': [
+        {
+          'destination': '<(INTERMEDIATE_DIR)',
+          'files': [
+            'test_data/elf_file_unittest_relocs_arm32.so',
+            'test_data/elf_file_unittest_relocs_arm32_packed.so',
+            'test_data/elf_file_unittest_relocs_arm64.so',
+            'test_data/elf_file_unittest_relocs_arm64_packed.so',
+          ],
+        },
+      ],
+    },
+
+    # Targets to build test data.  These participate only in building test
+    # data for use with elf_file_unittest.cc, and are not part of the main
+    # relocation packer build.  Unit test data files are checked in to the
+    # source tree as 'golden' data, and are not generated 'on the fly' by
+    # the build.
+    #
+    # See test_data/generate_elf_file_unittest_relocs.sh for instructions.
+    {
+      # GN: //tools/relocation_packer:relocation_packer_test_data
+      'target_name': 'relocation_packer_test_data',
+      'toolsets': ['target'],
+      'type': 'shared_library',
+      'cflags': [
+        '-O0',
+        '-g0',
+      ],
+      'sources': [
+        'test_data/elf_file_unittest_relocs.cc',
+      ],
+    },
+    {
+      # GN: //tools/relocation_packer:relocation_packer_unittests_test_data
+      'target_name': 'relocation_packer_unittests_test_data',
+      'toolsets': ['target'],
+      'type': 'none',
+      'actions': [
+        {
+          'variables': {
+            'test_file': '<(SHARED_LIB_DIR)/librelocation_packer_test_data.so',
+            'conditions': [
+              [ 'target_arch == "arm"', {
+                'added_section': '.android.rel.dyn',
+                'unpacked_output': 'elf_file_unittest_relocs_arm32.so',
+                'packed_output': 'elf_file_unittest_relocs_arm32_packed.so',
+              }],
+              [ 'target_arch == "arm64"', {
+                'added_section': '.android.rela.dyn',
+                'unpacked_output': 'elf_file_unittest_relocs_arm64.so',
+                'packed_output': 'elf_file_unittest_relocs_arm64_packed.so',
+              }],
+            ],
+          },
+          'action_name': 'generate_relocation_packer_test_data',
+          'inputs': [
+            'test_data/generate_elf_file_unittest_relocs.py',
+            '<(PRODUCT_DIR)/relocation_packer',
+            '<(test_file)',
+          ],
+          'outputs': [
+            '<(INTERMEDIATE_DIR)/<(unpacked_output)',
+            '<(INTERMEDIATE_DIR)/<(packed_output)',
+          ],
+          'action': [
+              'python', 'test_data/generate_elf_file_unittest_relocs.py',
+              '--android-pack-relocations=<(PRODUCT_DIR)/relocation_packer',
+              '--android-objcopy=<(android_objcopy)',
+              '--added-section=<(added_section)',
+              '--test-file=<(test_file)',
+              '--unpacked-output=<(INTERMEDIATE_DIR)/<(unpacked_output)',
+              '--packed-output=<(INTERMEDIATE_DIR)/<(packed_output)',
+          ],
+        },
+      ],
+    },
+  ],
+}