2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
//===-- AuxVector.cpp -------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "AuxVector.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/DataExtractor.h"
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#include "lldb/Utility/Log.h"
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using namespace lldb;
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using namespace lldb_private;
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static bool GetMaxU64(DataExtractor &data, lldb::offset_t *offset_ptr,
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uint64_t *value, unsigned int byte_size) {
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lldb::offset_t saved_offset = *offset_ptr;
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*value = data.GetMaxU64(offset_ptr, byte_size);
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return *offset_ptr != saved_offset;
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}
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static bool ParseAuxvEntry(DataExtractor &data, AuxVector::Entry &entry,
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lldb::offset_t *offset_ptr, unsigned int byte_size) {
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if (!GetMaxU64(data, offset_ptr, &entry.type, byte_size))
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return false;
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if (!GetMaxU64(data, offset_ptr, &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 AuxVector::GetAuxvData() {
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if (m_process)
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return m_process->GetAuxvData();
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else
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return DataBufferSP();
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}
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void AuxVector::ParseAuxv(DataExtractor &data) {
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const unsigned int byte_size = m_process->GetAddressByteSize();
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lldb::offset_t offset = 0;
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for (;;) {
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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 == AUXV_AT_NULL)
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break;
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if (entry.type == AUXV_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) : m_process(process) {
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DataExtractor data;
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Log *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 AuxVector::FindEntry(EntryType type) const {
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for (iterator I = begin(); I != end(); ++I) {
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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 AuxVector::DumpToLog(Log *log) const {
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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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log->Printf(" %s [%" PRIu64 "]: %" PRIx64, GetEntryName(*I), I->type,
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I->value);
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}
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}
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const char *AuxVector::GetEntryName(EntryType type) {
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const char *name = "AT_???";
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#define ENTRY_NAME(_type) \
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_type: \
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name = &#_type[5]
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switch (type) {
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case ENTRY_NAME(AUXV_AT_NULL); break;
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case ENTRY_NAME(AUXV_AT_IGNORE); break;
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case ENTRY_NAME(AUXV_AT_EXECFD); break;
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case ENTRY_NAME(AUXV_AT_PHDR); break;
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case ENTRY_NAME(AUXV_AT_PHENT); break;
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case ENTRY_NAME(AUXV_AT_PHNUM); break;
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case ENTRY_NAME(AUXV_AT_PAGESZ); break;
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case ENTRY_NAME(AUXV_AT_BASE); break;
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case ENTRY_NAME(AUXV_AT_FLAGS); break;
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case ENTRY_NAME(AUXV_AT_ENTRY); break;
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case ENTRY_NAME(AUXV_AT_NOTELF); break;
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case ENTRY_NAME(AUXV_AT_UID); break;
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case ENTRY_NAME(AUXV_AT_EUID); break;
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case ENTRY_NAME(AUXV_AT_GID); break;
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case ENTRY_NAME(AUXV_AT_EGID); break;
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case ENTRY_NAME(AUXV_AT_CLKTCK); break;
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case ENTRY_NAME(AUXV_AT_PLATFORM); break;
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case ENTRY_NAME(AUXV_AT_HWCAP); break;
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case ENTRY_NAME(AUXV_AT_FPUCW); break;
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case ENTRY_NAME(AUXV_AT_DCACHEBSIZE); break;
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case ENTRY_NAME(AUXV_AT_ICACHEBSIZE); break;
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case ENTRY_NAME(AUXV_AT_UCACHEBSIZE); break;
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case ENTRY_NAME(AUXV_AT_IGNOREPPC); break;
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case ENTRY_NAME(AUXV_AT_SECURE); break;
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case ENTRY_NAME(AUXV_AT_BASE_PLATFORM); break;
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case ENTRY_NAME(AUXV_AT_RANDOM); break;
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case ENTRY_NAME(AUXV_AT_EXECFN); break;
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case ENTRY_NAME(AUXV_AT_SYSINFO); break;
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case ENTRY_NAME(AUXV_AT_SYSINFO_EHDR); break;
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case ENTRY_NAME(AUXV_AT_L1I_CACHESHAPE); break;
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case ENTRY_NAME(AUXV_AT_L1D_CACHESHAPE); break;
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case ENTRY_NAME(AUXV_AT_L2_CACHESHAPE); break;
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case ENTRY_NAME(AUXV_AT_L3_CACHESHAPE); 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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