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-rw-r--r--bcinfo/BitcodeWrapper.cpp69
1 files changed, 69 insertions, 0 deletions
diff --git a/bcinfo/BitcodeWrapper.cpp b/bcinfo/BitcodeWrapper.cpp
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+++ b/bcinfo/BitcodeWrapper.cpp
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+/*
+ * Copyright 2011, 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.
+ */
+
+#include "bcinfo/BitcodeWrapper.h"
+
+#define LOG_TAG "bcinfo"
+#include <cutils/log.h>
+
+#include "llvm/Bitcode/ReaderWriter.h"
+
+#include <cstdlib>
+#include <cstring>
+
+namespace bcinfo {
+
+BitcodeWrapper::BitcodeWrapper(const char *bitcode, size_t bitcodeSize)
+ : mFileType(BC_NOT_BC), mBitcode(bitcode),
+ mBitcodeEnd(bitcode + bitcodeSize - 1), mBitcodeSize(bitcodeSize) {
+ memset(&mBCHeader, 0, sizeof(mBCHeader));
+}
+
+
+BitcodeWrapper::~BitcodeWrapper() {
+ return;
+}
+
+
+bool BitcodeWrapper::unwrap() {
+ if (!mBitcode || !mBitcodeSize) {
+ LOGE("Invalid/empty bitcode");
+ return false;
+ }
+
+ if (llvm::isBitcodeWrapper((const unsigned char*) mBitcode,
+ (const unsigned char*) mBitcodeEnd)) {
+ if (mBitcodeSize < sizeof(mBCHeader)) {
+ LOGE("Invalid bitcode size");
+ return false;
+ }
+
+ mFileType = BC_WRAPPER;
+ memcpy(&mBCHeader, mBitcode, sizeof(mBCHeader));
+ return true;
+ } else if (llvm::isRawBitcode((const unsigned char*) mBitcode,
+ (const unsigned char*) mBitcodeEnd)) {
+ mFileType = BC_RAW;
+ return true;
+ } else {
+ LOGE("Not bitcode");
+ mFileType = BC_NOT_BC;
+ return false;
+ }
+}
+
+} // namespace bcinfo
+