AuxVector.cpp revision 360784
1296177Sjhibbits//===-- AuxVector.cpp -------------------------------------------*- C++ -*-===// 2296177Sjhibbits// 3296177Sjhibbits// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4296177Sjhibbits// See https://llvm.org/LICENSE.txt for license information. 5296177Sjhibbits// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6296177Sjhibbits// 7296177Sjhibbits//===----------------------------------------------------------------------===// 8296177Sjhibbits 9296177Sjhibbits#include "AuxVector.h" 10296177Sjhibbits 11296177SjhibbitsAuxVector::AuxVector(const lldb_private::DataExtractor &data) { 12296177Sjhibbits ParseAuxv(data); 13296177Sjhibbits} 14296177Sjhibbits 15296177Sjhibbitsvoid AuxVector::ParseAuxv(const lldb_private::DataExtractor &data) { 16296177Sjhibbits lldb::offset_t offset = 0; 17296177Sjhibbits const size_t value_type_size = data.GetAddressByteSize() * 2; 18296177Sjhibbits while (data.ValidOffsetForDataOfSize(offset, value_type_size)) { 19296177Sjhibbits // We're not reading an address but an int that could be 32 or 64 bit 20296177Sjhibbits // depending on the address size, which is what GetAddress does. 21296177Sjhibbits const uint64_t type = data.GetAddress(&offset); 22296177Sjhibbits const uint64_t value = data.GetAddress(&offset); 23296177Sjhibbits if (type == AUXV_AT_NULL) 24296177Sjhibbits break; 25296177Sjhibbits if (type == AUXV_AT_IGNORE) 26296177Sjhibbits continue; 27296177Sjhibbits 28296177Sjhibbits m_auxv_entries[type] = value; 29296177Sjhibbits } 30296177Sjhibbits} 31296177Sjhibbits 32296177Sjhibbitsllvm::Optional<uint64_t> 33296177SjhibbitsAuxVector::GetAuxValue(enum EntryType entry_type) const { 34296177Sjhibbits auto it = m_auxv_entries.find(static_cast<uint64_t>(entry_type)); 35296177Sjhibbits if (it != m_auxv_entries.end()) 36296177Sjhibbits return it->second; 37296177Sjhibbits return llvm::None; 38296177Sjhibbits} 39296177Sjhibbits 40296177Sjhibbitsvoid AuxVector::DumpToLog(lldb_private::Log *log) const { 41296177Sjhibbits if (!log) 42296177Sjhibbits return; 43296177Sjhibbits 44296177Sjhibbits log->PutCString("AuxVector: "); 45296177Sjhibbits for (auto entry : m_auxv_entries) { 46296177Sjhibbits LLDB_LOGF(log, " %s [%" PRIu64 "]: %" PRIx64, 47296177Sjhibbits GetEntryName(static_cast<EntryType>(entry.first)), entry.first, 48296177Sjhibbits entry.second); 49296177Sjhibbits } 50296177Sjhibbits} 51296177Sjhibbits 52296177Sjhibbitsconst char *AuxVector::GetEntryName(EntryType type) const { 53296177Sjhibbits const char *name = "AT_???"; 54296177Sjhibbits 55296177Sjhibbits#define ENTRY_NAME(_type) \ 56296177Sjhibbits _type: \ 57296177Sjhibbits name = &#_type[5] 58296177Sjhibbits switch (type) { 59296177Sjhibbits case ENTRY_NAME(AUXV_AT_NULL); break; 60296177Sjhibbits case ENTRY_NAME(AUXV_AT_IGNORE); break; 61296177Sjhibbits case ENTRY_NAME(AUXV_AT_EXECFD); break; 62296177Sjhibbits case ENTRY_NAME(AUXV_AT_PHDR); break; 63296177Sjhibbits case ENTRY_NAME(AUXV_AT_PHENT); break; 64296177Sjhibbits case ENTRY_NAME(AUXV_AT_PHNUM); break; 65296177Sjhibbits case ENTRY_NAME(AUXV_AT_PAGESZ); break; 66296177Sjhibbits case ENTRY_NAME(AUXV_AT_BASE); break; 67296177Sjhibbits case ENTRY_NAME(AUXV_AT_FLAGS); break; 68296177Sjhibbits case ENTRY_NAME(AUXV_AT_ENTRY); break; 69296177Sjhibbits case ENTRY_NAME(AUXV_AT_NOTELF); break; 70296177Sjhibbits case ENTRY_NAME(AUXV_AT_UID); break; 71296177Sjhibbits case ENTRY_NAME(AUXV_AT_EUID); break; 72296177Sjhibbits case ENTRY_NAME(AUXV_AT_GID); break; 73296177Sjhibbits case ENTRY_NAME(AUXV_AT_EGID); break; 74296177Sjhibbits case ENTRY_NAME(AUXV_AT_CLKTCK); break; 75296177Sjhibbits case ENTRY_NAME(AUXV_AT_PLATFORM); break; 76296177Sjhibbits case ENTRY_NAME(AUXV_AT_HWCAP); break; 77296177Sjhibbits case ENTRY_NAME(AUXV_AT_FPUCW); break; 78296177Sjhibbits case ENTRY_NAME(AUXV_AT_DCACHEBSIZE); break; 79296177Sjhibbits case ENTRY_NAME(AUXV_AT_ICACHEBSIZE); break; 80296177Sjhibbits case ENTRY_NAME(AUXV_AT_UCACHEBSIZE); break; 81296177Sjhibbits case ENTRY_NAME(AUXV_AT_IGNOREPPC); break; 82296177Sjhibbits case ENTRY_NAME(AUXV_AT_SECURE); break; 83296177Sjhibbits case ENTRY_NAME(AUXV_AT_BASE_PLATFORM); break; 84296177Sjhibbits case ENTRY_NAME(AUXV_AT_RANDOM); break; 85296177Sjhibbits case ENTRY_NAME(AUXV_AT_EXECFN); break; 86296177Sjhibbits case ENTRY_NAME(AUXV_AT_SYSINFO); break; 87296177Sjhibbits case ENTRY_NAME(AUXV_AT_SYSINFO_EHDR); break; 88296177Sjhibbits case ENTRY_NAME(AUXV_AT_L1I_CACHESHAPE); break; 89296177Sjhibbits case ENTRY_NAME(AUXV_AT_L1D_CACHESHAPE); break; 90296177Sjhibbits case ENTRY_NAME(AUXV_AT_L2_CACHESHAPE); break; 91296177Sjhibbits case ENTRY_NAME(AUXV_AT_L3_CACHESHAPE); break; 92296177Sjhibbits } 93296177Sjhibbits#undef ENTRY_NAME 94296177Sjhibbits 95296177Sjhibbits return name; 96296177Sjhibbits} 97296177Sjhibbits