97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
//===-- AuxVector.cpp -----------------------------------------------------===//
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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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AuxVector::AuxVector(const lldb_private::DataExtractor &data) {
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ParseAuxv(data);
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}
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void AuxVector::ParseAuxv(const lldb_private::DataExtractor &data) {
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lldb::offset_t offset = 0;
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const size_t value_type_size = data.GetAddressByteSize() * 2;
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while (data.ValidOffsetForDataOfSize(offset, value_type_size)) {
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// We're not reading an address but an int that could be 32 or 64 bit
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// depending on the address size, which is what GetAddress does.
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const uint64_t type = data.GetAddress(&offset);
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const uint64_t value = data.GetAddress(&offset);
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if (type == AUXV_AT_NULL)
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break;
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if (type == AUXV_AT_IGNORE)
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continue;
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m_auxv_entries[type] = value;
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}
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}
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llvm::Optional<uint64_t>
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AuxVector::GetAuxValue(enum EntryType entry_type) const {
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auto it = m_auxv_entries.find(static_cast<uint64_t>(entry_type));
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if (it != m_auxv_entries.end())
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return it->second;
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return llvm::None;
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}
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void AuxVector::DumpToLog(lldb_private::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 (auto entry : m_auxv_entries) {
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LLDB_LOGF(log, " %s [%" PRIu64 "]: %" PRIx64,
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GetEntryName(static_cast<EntryType>(entry.first)), entry.first,
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entry.second);
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}
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}
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const char *AuxVector::GetEntryName(EntryType type) const {
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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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