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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 "librsloader.h"
#include "ELFObject.h"
#include "ELFSectionSymTab.h"
#include "ELFSymbol.h"
#include "utils/serialize.h"
#define LOG_TAG "bcc"
#include "cutils/log.h"
#include <llvm/ADT/OwningPtr.h>
static inline RSExecRef wrap(ELFObject<32> *object) {
return reinterpret_cast<RSExecRef>(object);
}
static inline ELFObject<32> *unwrap(RSExecRef object) {
return reinterpret_cast<ELFObject<32> *>(object);
}
extern "C" RSExecRef
rsloaderCreateExec(unsigned char const *buf,
size_t buf_size,
void *(*find_symbol)(void *, char const *),
void *find_symbol_context) {
ArchiveReaderLE AR(buf, buf_size);
llvm::OwningPtr<ELFObject<32> > object(ELFObject<32>::read(AR));
if (!object) {
LOGE("Unable to load the ELF object.");
return NULL;
}
//object->print();
object->relocate(find_symbol, find_symbol_context);
return wrap(object.take());
}
extern "C" void rsloaderDisposeExec(RSExecRef object) {
delete unwrap(object);
}
extern "C" void *rsloaderGetSymbolAddress(RSExecRef object_,
char const *name) {
ELFObject<32> *object = unwrap(object_);
ELFSectionSymTab<32> *symtab =
static_cast<ELFSectionSymTab<32> *>(object->getSectionByName(".symtab"));
if (!symtab) {
return NULL;
}
ELFSymbol<32> *symbol = symtab->getByName(name);
if (!symbol) {
ALOGV("Symbol not found: %s\n", name);
return NULL;
}
return symbol->getAddress(false);
}
extern "C" size_t rsloaderGetSymbolSize(RSExecRef object_, char const *name) {
ELFObject<32> *object = unwrap(object_);
ELFSectionSymTab<32> *symtab =
static_cast<ELFSectionSymTab<32> *>(object->getSectionByName(".symtab"));
if (!symtab) {
return NULL;
}
ELFSymbol<32> *symbol = symtab->getByName(name);
if (!symbol) {
ALOGV("Symbol not found: %s\n", name);
return NULL;
}
return (size_t)symbol->getSize();
}
extern "C" size_t rsloaderGetFuncCount(RSExecRef object) {
ELFSectionSymTab<32> *symtab = static_cast<ELFSectionSymTab<32> *>(
unwrap(object)->getSectionByName(".symtab"));
if (!symtab) {
return 0;
}
return symtab->getFuncCount();
}
extern "C" void rsloaderGetFuncNameList(RSExecRef object,
size_t size,
char const **list) {
ELFSectionSymTab<32> *symtab = static_cast<ELFSectionSymTab<32> *>(
unwrap(object)->getSectionByName(".symtab"));
if (symtab) {
symtab->getFuncNameList(size, list);
}
}
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