15ffd83dbSDimitry Andric //===-- AuxVector.cpp -----------------------------------------------------===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric 90b57cec5SDimitry Andric #include "AuxVector.h" 100b57cec5SDimitry Andric AuxVector(const lldb_private::DataExtractor & data)110b57cec5SDimitry AndricAuxVector::AuxVector(const lldb_private::DataExtractor &data) { 120b57cec5SDimitry Andric ParseAuxv(data); 130b57cec5SDimitry Andric } 140b57cec5SDimitry Andric ParseAuxv(const lldb_private::DataExtractor & data)150b57cec5SDimitry Andricvoid AuxVector::ParseAuxv(const lldb_private::DataExtractor &data) { 160b57cec5SDimitry Andric lldb::offset_t offset = 0; 170b57cec5SDimitry Andric const size_t value_type_size = data.GetAddressByteSize() * 2; 180b57cec5SDimitry Andric while (data.ValidOffsetForDataOfSize(offset, value_type_size)) { 190b57cec5SDimitry Andric // We're not reading an address but an int that could be 32 or 64 bit 200b57cec5SDimitry Andric // depending on the address size, which is what GetAddress does. 210b57cec5SDimitry Andric const uint64_t type = data.GetAddress(&offset); 220b57cec5SDimitry Andric const uint64_t value = data.GetAddress(&offset); 230b57cec5SDimitry Andric if (type == AUXV_AT_NULL) 240b57cec5SDimitry Andric break; 250b57cec5SDimitry Andric if (type == AUXV_AT_IGNORE) 260b57cec5SDimitry Andric continue; 270b57cec5SDimitry Andric 280b57cec5SDimitry Andric m_auxv_entries[type] = value; 290b57cec5SDimitry Andric } 300b57cec5SDimitry Andric } 310b57cec5SDimitry Andric 320b57cec5SDimitry Andric llvm::Optional<uint64_t> GetAuxValue(enum EntryType entry_type) const330b57cec5SDimitry AndricAuxVector::GetAuxValue(enum EntryType entry_type) const { 340b57cec5SDimitry Andric auto it = m_auxv_entries.find(static_cast<uint64_t>(entry_type)); 350b57cec5SDimitry Andric if (it != m_auxv_entries.end()) 360b57cec5SDimitry Andric return it->second; 370b57cec5SDimitry Andric return llvm::None; 380b57cec5SDimitry Andric } 390b57cec5SDimitry Andric DumpToLog(lldb_private::Log * log) const400b57cec5SDimitry Andricvoid AuxVector::DumpToLog(lldb_private::Log *log) const { 410b57cec5SDimitry Andric if (!log) 420b57cec5SDimitry Andric return; 430b57cec5SDimitry Andric 440b57cec5SDimitry Andric log->PutCString("AuxVector: "); 450b57cec5SDimitry Andric for (auto entry : m_auxv_entries) { 469dba64beSDimitry Andric LLDB_LOGF(log, " %s [%" PRIu64 "]: %" PRIx64, 470b57cec5SDimitry Andric GetEntryName(static_cast<EntryType>(entry.first)), entry.first, 480b57cec5SDimitry Andric entry.second); 490b57cec5SDimitry Andric } 500b57cec5SDimitry Andric } 510b57cec5SDimitry Andric GetEntryName(EntryType type) const520b57cec5SDimitry Andricconst char *AuxVector::GetEntryName(EntryType type) const { 530b57cec5SDimitry Andric const char *name = "AT_???"; 540b57cec5SDimitry Andric 550b57cec5SDimitry Andric #define ENTRY_NAME(_type) \ 560b57cec5SDimitry Andric _type: \ 570b57cec5SDimitry Andric name = &#_type[5] 580b57cec5SDimitry Andric switch (type) { 590b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_NULL); break; 600b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_IGNORE); break; 610b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_EXECFD); break; 620b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_PHDR); break; 630b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_PHENT); break; 640b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_PHNUM); break; 650b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_PAGESZ); break; 660b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_BASE); break; 670b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_FLAGS); break; 680b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_ENTRY); break; 690b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_NOTELF); break; 700b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_UID); break; 710b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_EUID); break; 720b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_GID); break; 730b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_EGID); break; 740b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_CLKTCK); break; 750b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_PLATFORM); break; 760b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_HWCAP); break; 770b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_FPUCW); break; 780b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_DCACHEBSIZE); break; 790b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_ICACHEBSIZE); break; 800b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_UCACHEBSIZE); break; 810b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_IGNOREPPC); break; 820b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_SECURE); break; 830b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_BASE_PLATFORM); break; 840b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_RANDOM); break; 85*af732203SDimitry Andric case ENTRY_NAME(AUXV_AT_HWCAP2); break; 860b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_EXECFN); break; 870b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_SYSINFO); break; 880b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_SYSINFO_EHDR); break; 890b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_L1I_CACHESHAPE); break; 900b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_L1D_CACHESHAPE); break; 910b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_L2_CACHESHAPE); break; 920b57cec5SDimitry Andric case ENTRY_NAME(AUXV_AT_L3_CACHESHAPE); break; 930b57cec5SDimitry Andric } 940b57cec5SDimitry Andric #undef ENTRY_NAME 950b57cec5SDimitry Andric 960b57cec5SDimitry Andric return name; 970b57cec5SDimitry Andric } 98