Add dex file intermediate representation
Add an intermediate representation, constructed from the DexFile
utilities, that can be used to optimize the layout and re-emit dex
files.
BUG: 29921113
TEST: TODO: Add dex files to compare output with dexdump
(cherry-picked from commit af14d9f551e6169c201dc7981d9cfbcb53c7d2c7)
Change-Id: I3dacb78fad5228e43d77f20b110bd40e0e116cdb
diff --git a/dexlayout/dexlayout_main.cc b/dexlayout/dexlayout_main.cc
new file mode 100644
index 0000000..286a0c6
--- /dev/null
+++ b/dexlayout/dexlayout_main.cc
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Main driver of the dexlayout utility.
+ *
+ * This is a tool to read dex files into an internal representation,
+ * reorganize the representation, and emit dex files with a better
+ * file layout.
+ */
+
+#include "dexlayout.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "mem_map.h"
+#include "runtime.h"
+
+namespace art {
+
+static const char* kProgramName = "dexlayout";
+
+/*
+ * Shows usage.
+ */
+static void Usage(void) {
+ fprintf(stderr, "Copyright (C) 2007 The Android Open Source Project\n\n");
+ fprintf(stderr, "%s: [-a] [-c] [-d] [-e] [-f] [-h] [-i] [-l layout] [-o outfile]"
+ " dexfile...\n\n", kProgramName);
+ fprintf(stderr, " -a : display annotations\n");
+ fprintf(stderr, " -b : build dex_ir\n");
+ fprintf(stderr, " -c : verify checksum and exit\n");
+ fprintf(stderr, " -d : disassemble code sections\n");
+ fprintf(stderr, " -e : display exported items only\n");
+ fprintf(stderr, " -f : display summary information from file header\n");
+ fprintf(stderr, " -g : display CFG for dex\n");
+ fprintf(stderr, " -h : display file header details\n");
+ fprintf(stderr, " -i : ignore checksum failures\n");
+ fprintf(stderr, " -l : output layout, either 'plain' or 'xml'\n");
+ fprintf(stderr, " -o : output file name (defaults to stdout)\n");
+}
+
+/*
+ * Main driver of the dexlayout utility.
+ */
+int DexlayoutDriver(int argc, char** argv) {
+ // Art specific set up.
+ InitLogging(argv);
+ MemMap::Init();
+
+ // Reset options.
+ bool want_usage = false;
+ memset(&options_, 0, sizeof(options_));
+ options_.verbose_ = true;
+
+ // Parse all arguments.
+ while (1) {
+ const int ic = getopt(argc, argv, "abcdefghil:o:");
+ if (ic < 0) {
+ break; // done
+ }
+ switch (ic) {
+ case 'a': // display annotations
+ options_.show_annotations_ = true;
+ break;
+ case 'b': // build dex_ir
+ options_.build_dex_ir_ = true;
+ break;
+ case 'c': // verify the checksum then exit
+ options_.checksum_only_ = true;
+ break;
+ case 'd': // disassemble Dalvik instructions
+ options_.disassemble_ = true;
+ break;
+ case 'e': // exported items only
+ options_.exports_only_ = true;
+ break;
+ case 'f': // display outer file header
+ options_.show_file_headers_ = true;
+ break;
+ case 'g': // display cfg
+ options_.show_cfg_ = true;
+ break;
+ case 'h': // display section headers, i.e. all meta-data
+ options_.show_section_headers_ = true;
+ break;
+ case 'i': // continue even if checksum is bad
+ options_.ignore_bad_checksum_ = true;
+ break;
+ case 'l': // layout
+ if (strcmp(optarg, "plain") == 0) {
+ options_.output_format_ = kOutputPlain;
+ } else if (strcmp(optarg, "xml") == 0) {
+ options_.output_format_ = kOutputXml;
+ options_.verbose_ = false;
+ } else {
+ want_usage = true;
+ }
+ break;
+ case 'o': // output file
+ options_.output_file_name_ = optarg;
+ break;
+ default:
+ want_usage = true;
+ break;
+ } // switch
+ } // while
+
+ // Detect early problems.
+ if (optind == argc) {
+ fprintf(stderr, "%s: no file specified\n", kProgramName);
+ want_usage = true;
+ }
+ if (options_.checksum_only_ && options_.ignore_bad_checksum_) {
+ fprintf(stderr, "Can't specify both -c and -i\n");
+ want_usage = true;
+ }
+ if (want_usage) {
+ Usage();
+ return 2;
+ }
+
+ // Open alternative output file.
+ if (options_.output_file_name_) {
+ out_file_ = fopen(options_.output_file_name_, "w");
+ if (!out_file_) {
+ fprintf(stderr, "Can't open %s\n", options_.output_file_name_);
+ return 1;
+ }
+ }
+
+ // Process all files supplied on command line.
+ int result = 0;
+ while (optind < argc) {
+ result |= ProcessFile(argv[optind++]);
+ } // while
+ return result != 0;
+}
+
+} // namespace art
+
+int main(int argc, char** argv) {
+ return art::DexlayoutDriver(argc, argv);
+}