forked from OSchip/llvm-project
150 lines
3.4 KiB
C++
150 lines
3.4 KiB
C++
//===-- AuxVector.cpp -------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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// C++ Includes
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// Other libraries and framework includes
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#include "lldb/Core/DataBufferHeap.h"
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#include "lldb/Core/DataExtractor.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Target/Process.h"
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#include "AuxVector.h"
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using namespace lldb;
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using namespace lldb_private;
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static bool
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GetMaxU64(DataExtractor &data,
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uint32_t *offset, uint64_t *value, unsigned int byte_size)
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{
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uint32_t saved_offset = *offset;
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*value = data.GetMaxU64(offset, byte_size);
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return *offset != saved_offset;
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}
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static bool
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ParseAuxvEntry(DataExtractor &data, AuxVector::Entry &entry,
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uint32_t *offset, unsigned int byte_size)
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{
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if (!GetMaxU64(data, offset, &entry.type, byte_size))
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return false;
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if (!GetMaxU64(data, offset, &entry.value, byte_size))
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return false;
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return true;
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}
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DataBufferSP
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AuxVector::GetAuxvData()
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{
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return lldb_private::Host::GetAuxvData(m_process);
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}
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void
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AuxVector::ParseAuxv(DataExtractor &data)
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{
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const unsigned int byte_size = m_process->GetAddressByteSize();
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uint32_t offset = 0;
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for (;;)
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{
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Entry entry;
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if (!ParseAuxvEntry(data, entry, &offset, byte_size))
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break;
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if (entry.type == AT_NULL)
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break;
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if (entry.type == AT_IGNORE)
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continue;
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m_auxv.push_back(entry);
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}
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}
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AuxVector::AuxVector(Process *process)
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: m_process(process)
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{
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DataExtractor data;
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LogSP log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
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data.SetData(GetAuxvData());
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data.SetByteOrder(m_process->GetByteOrder());
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data.SetAddressByteSize(m_process->GetAddressByteSize());
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ParseAuxv(data);
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if (log)
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DumpToLog(log);
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}
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AuxVector::iterator
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AuxVector::FindEntry(EntryType type) const
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{
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for (iterator I = begin(); I != end(); ++I)
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{
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if (I->type == static_cast<uint64_t>(type))
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return I;
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}
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return end();
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}
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void
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AuxVector::DumpToLog(LogSP log) const
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{
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if (!log)
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return;
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log->PutCString("AuxVector: ");
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for (iterator I = begin(); I != end(); ++I)
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{
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log->Printf(" %s [%" PRIu64 "]: %" PRIx64, GetEntryName(*I), I->type, I->value);
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}
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}
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const char *
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AuxVector::GetEntryName(EntryType type)
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{
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const char *name;
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#define ENTRY_NAME(_type) _type: name = #_type
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switch (type)
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{
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case ENTRY_NAME(AT_NULL); break;
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case ENTRY_NAME(AT_IGNORE); break;
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case ENTRY_NAME(AT_EXECFD); break;
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case ENTRY_NAME(AT_PHDR); break;
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case ENTRY_NAME(AT_PHENT); break;
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case ENTRY_NAME(AT_PHNUM); break;
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case ENTRY_NAME(AT_PAGESZ); break;
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case ENTRY_NAME(AT_BASE); break;
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case ENTRY_NAME(AT_FLAGS); break;
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case ENTRY_NAME(AT_ENTRY); break;
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case ENTRY_NAME(AT_NOTELF); break;
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case ENTRY_NAME(AT_UID); break;
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case ENTRY_NAME(AT_EUID); break;
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case ENTRY_NAME(AT_GID); break;
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case ENTRY_NAME(AT_EGID); break;
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case ENTRY_NAME(AT_CLKTCK); break;
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}
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#undef ENTRY_NAME
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return name;
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}
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