Make libbcc public.

This commit is not expected to change any functionality.

Change-Id: I364e8bad32d946281b78b1ce36a1b26bf60e3055
diff --git a/lib/RenderScript/RSExecutable.cpp b/lib/RenderScript/RSExecutable.cpp
new file mode 100644
index 0000000..de730ed
--- /dev/null
+++ b/lib/RenderScript/RSExecutable.cpp
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2012, 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 "bcc/RenderScript/RSExecutable.h"
+
+#include "bcc/Support/DebugHelper.h"
+#include "bcc/Support/FileBase.h"
+#include "bcc/Support/OutputFile.h"
+#include "bcc/ExecutionEngine/SymbolResolverProxy.h"
+
+#include <utils/String8.h>
+
+using namespace bcc;
+
+const char *RSExecutable::SpecialFunctionNames[] = {
+  "root",
+  "init",
+  ".rs.dtor",
+  // Must be NULL-terminated.
+  NULL
+};
+
+RSExecutable *RSExecutable::Create(RSInfo &pInfo,
+                                   FileBase &pObjFile,
+                                   SymbolResolverProxy &pResolver) {
+  // Load the object file. Enable the GDB's JIT debugging if the script contains
+  // debug information.
+  ObjectLoader *loader = ObjectLoader::Load(pObjFile,
+                                            pResolver,
+                                            pInfo.hasDebugInformation());
+  if (loader == NULL) {
+    return NULL;
+  }
+
+  // Now, all things required to build a RSExecutable object are ready.
+  RSExecutable *result = new (std::nothrow) RSExecutable(pInfo,
+                                                         pObjFile,
+                                                         *loader);
+  if (result == NULL) {
+    ALOGE("Out of memory when create object to hold RS result file for %s!",
+          pObjFile.getName().c_str());
+    return NULL;
+  }
+
+  unsigned idx;
+  // Resolve addresses of RS export vars.
+  idx = 0;
+  const RSInfo::ExportVarNameListTy &export_var_names =
+      pInfo.getExportVarNames();
+  for (RSInfo::ExportVarNameListTy::const_iterator
+           var_iter = export_var_names.begin(),
+           var_end = export_var_names.end(); var_iter != var_end;
+       var_iter++, idx++) {
+    const char *name = *var_iter;
+    void *addr = result->getSymbolAddress(name);
+    if (addr == NULL) {
+      ALOGW("RS export var at entry #%u named %s cannot be found in the result "
+            "object!", idx, name);
+    }
+    result->mExportVarAddrs.push_back(addr);
+  }
+
+  // Resolve addresses of RS export functions.
+  idx = 0;
+  const RSInfo::ExportFuncNameListTy &export_func_names =
+      pInfo.getExportFuncNames();
+  for (RSInfo::ExportFuncNameListTy::const_iterator
+           func_iter = export_func_names.begin(),
+           func_end = export_func_names.end(); func_iter != func_end;
+       func_iter++, idx++) {
+    const char *name = *func_iter;
+    void *addr = result->getSymbolAddress(name);
+    if (addr == NULL) {
+      ALOGW("RS export func at entry #%u named %s cannot be found in the result"
+            " object!", idx, name);
+    }
+    result->mExportFuncAddrs.push_back(addr);
+  }
+
+  // Resolve addresses of expanded RS foreach function.
+  idx = 0;
+  const RSInfo::ExportForeachFuncListTy &export_foreach_funcs =
+      pInfo.getExportForeachFuncs();
+  for (RSInfo::ExportForeachFuncListTy::const_iterator
+           foreach_iter = export_foreach_funcs.begin(),
+           foreach_end = export_foreach_funcs.end();
+       foreach_iter != foreach_end; foreach_iter++, idx++) {
+    const char *func_name = foreach_iter->first;
+    android::String8 expanded_func_name(func_name);
+    expanded_func_name.append(".expand");
+    void *addr = result->getSymbolAddress(expanded_func_name.string());
+    if (addr == NULL) {
+      ALOGW("Expanded RS foreach at entry #%u named %s cannot be found in the "
+            "result object!", idx, expanded_func_name.string());
+    }
+    result->mExportForeachFuncAddrs.push_back(addr);
+  }
+
+  // Copy pragma key/value pairs from RSInfo::getPragmas() into mPragmaKeys and
+  // mPragmaValues, respectively.
+  const RSInfo::PragmaListTy &pragmas = pInfo.getPragmas();
+  for (RSInfo::PragmaListTy::const_iterator pragma_iter = pragmas.begin(),
+          pragma_end = pragmas.end(); pragma_iter != pragma_end;
+       pragma_iter++){
+    result->mPragmaKeys.push_back(pragma_iter->first);
+    result->mPragmaValues.push_back(pragma_iter->second);
+  }
+
+  return result;
+}
+
+bool RSExecutable::syncInfo(bool pForce) {
+  if (!pForce && !mIsInfoDirty) {
+    return true;
+  }
+
+  android::String8 info_path = RSInfo::GetPath(*mObjFile);
+  OutputFile info_file(info_path.string());
+
+  if (info_file.hasError()) {
+    ALOGE("Failed to open the info file %s for write! (%s)", info_path.string(),
+          info_file.getErrorMessage().c_str());
+    return false;
+  }
+
+  // Operation to the RS info file need to acquire the lock on the output file
+  // first.
+  if (!mObjFile->lock(FileBase::kWriteLock)) {
+    ALOGE("Write to RS info file %s required the acquisition of the write lock "
+          "on %s but got failure! (%s)", info_path.string(),
+          mObjFile->getName().c_str(), info_file.getErrorMessage().c_str());
+    return false;
+  }
+
+  // Perform the write.
+  if (!mInfo->write(info_file)) {
+    ALOGE("Failed to sync the RS info file %s!", info_path.string());
+    mObjFile->unlock();
+    return false;
+  }
+
+  mObjFile->unlock();
+  mIsInfoDirty = false;
+  return true;
+}
+
+RSExecutable::~RSExecutable() {
+  syncInfo();
+  delete mInfo;
+  delete mObjFile;
+  delete mLoader;
+}