diff options
Diffstat (limited to 'source/Plugins/Process/Utility/AuxVector.cpp')
| -rw-r--r-- | source/Plugins/Process/Utility/AuxVector.cpp | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/source/Plugins/Process/Utility/AuxVector.cpp b/source/Plugins/Process/Utility/AuxVector.cpp new file mode 100644 index 0000000000000..aab164ff93a64 --- /dev/null +++ b/source/Plugins/Process/Utility/AuxVector.cpp @@ -0,0 +1,96 @@ +//===-- AuxVector.cpp -------------------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include "AuxVector.h" + +AuxVector::AuxVector(const lldb_private::DataExtractor &data) { + ParseAuxv(data); +} + +void AuxVector::ParseAuxv(const lldb_private::DataExtractor &data) { + lldb::offset_t offset = 0; + const size_t value_type_size = data.GetAddressByteSize() * 2; + while (data.ValidOffsetForDataOfSize(offset, value_type_size)) { + // We're not reading an address but an int that could be 32 or 64 bit + // depending on the address size, which is what GetAddress does. + const uint64_t type = data.GetAddress(&offset); + const uint64_t value = data.GetAddress(&offset); + if (type == AUXV_AT_NULL) + break; + if (type == AUXV_AT_IGNORE) + continue; + + m_auxv_entries[type] = value; + } +} + +llvm::Optional<uint64_t> +AuxVector::GetAuxValue(enum EntryType entry_type) const { + auto it = m_auxv_entries.find(static_cast<uint64_t>(entry_type)); + if (it != m_auxv_entries.end()) + return it->second; + return llvm::None; +} + +void AuxVector::DumpToLog(lldb_private::Log *log) const { + if (!log) + return; + + log->PutCString("AuxVector: "); + for (auto entry : m_auxv_entries) { + log->Printf(" %s [%" PRIu64 "]: %" PRIx64, + GetEntryName(static_cast<EntryType>(entry.first)), entry.first, + entry.second); + } +} + +const char *AuxVector::GetEntryName(EntryType type) const { + const char *name = "AT_???"; + +#define ENTRY_NAME(_type) \ + _type: \ + name = &#_type[5] + switch (type) { + case ENTRY_NAME(AUXV_AT_NULL); break; + case ENTRY_NAME(AUXV_AT_IGNORE); break; + case ENTRY_NAME(AUXV_AT_EXECFD); break; + case ENTRY_NAME(AUXV_AT_PHDR); break; + case ENTRY_NAME(AUXV_AT_PHENT); break; + case ENTRY_NAME(AUXV_AT_PHNUM); break; + case ENTRY_NAME(AUXV_AT_PAGESZ); break; + case ENTRY_NAME(AUXV_AT_BASE); break; + case ENTRY_NAME(AUXV_AT_FLAGS); break; + case ENTRY_NAME(AUXV_AT_ENTRY); break; + case ENTRY_NAME(AUXV_AT_NOTELF); break; + case ENTRY_NAME(AUXV_AT_UID); break; + case ENTRY_NAME(AUXV_AT_EUID); break; + case ENTRY_NAME(AUXV_AT_GID); break; + case ENTRY_NAME(AUXV_AT_EGID); break; + case ENTRY_NAME(AUXV_AT_CLKTCK); break; + case ENTRY_NAME(AUXV_AT_PLATFORM); break; + case ENTRY_NAME(AUXV_AT_HWCAP); break; + case ENTRY_NAME(AUXV_AT_FPUCW); break; + case ENTRY_NAME(AUXV_AT_DCACHEBSIZE); break; + case ENTRY_NAME(AUXV_AT_ICACHEBSIZE); break; + case ENTRY_NAME(AUXV_AT_UCACHEBSIZE); break; + case ENTRY_NAME(AUXV_AT_IGNOREPPC); break; + case ENTRY_NAME(AUXV_AT_SECURE); break; + case ENTRY_NAME(AUXV_AT_BASE_PLATFORM); break; + case ENTRY_NAME(AUXV_AT_RANDOM); break; + case ENTRY_NAME(AUXV_AT_EXECFN); break; + case ENTRY_NAME(AUXV_AT_SYSINFO); break; + case ENTRY_NAME(AUXV_AT_SYSINFO_EHDR); break; + case ENTRY_NAME(AUXV_AT_L1I_CACHESHAPE); break; + case ENTRY_NAME(AUXV_AT_L1D_CACHESHAPE); break; + case ENTRY_NAME(AUXV_AT_L2_CACHESHAPE); break; + case ENTRY_NAME(AUXV_AT_L3_CACHESHAPE); break; + } +#undef ENTRY_NAME + + return name; +} |