1 //===-- AuxVector.cpp -------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "AuxVector.h"
11 #include "lldb/Target/Process.h"
12 #include "lldb/Utility/DataBufferHeap.h"
13 #include "lldb/Utility/DataExtractor.h"
14 #include "lldb/Utility/Log.h"
17 using namespace lldb_private;
19 static bool GetMaxU64(DataExtractor &data, lldb::offset_t *offset_ptr,
20 uint64_t *value, unsigned int byte_size) {
21 lldb::offset_t saved_offset = *offset_ptr;
22 *value = data.GetMaxU64(offset_ptr, byte_size);
23 return *offset_ptr != saved_offset;
26 static bool ParseAuxvEntry(DataExtractor &data, AuxVector::Entry &entry,
27 lldb::offset_t *offset_ptr, unsigned int byte_size) {
28 if (!GetMaxU64(data, offset_ptr, &entry.type, byte_size))
31 if (!GetMaxU64(data, offset_ptr, &entry.value, byte_size))
37 DataBufferSP AuxVector::GetAuxvData() {
39 return m_process->GetAuxvData();
41 return DataBufferSP();
44 void AuxVector::ParseAuxv(DataExtractor &data) {
45 const unsigned int byte_size = m_process->GetAddressByteSize();
46 lldb::offset_t offset = 0;
51 if (!ParseAuxvEntry(data, entry, &offset, byte_size))
54 if (entry.type == AUXV_AT_NULL)
57 if (entry.type == AUXV_AT_IGNORE)
60 m_auxv.push_back(entry);
64 AuxVector::AuxVector(Process *process) : m_process(process) {
66 Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
68 data.SetData(GetAuxvData());
69 data.SetByteOrder(m_process->GetByteOrder());
70 data.SetAddressByteSize(m_process->GetAddressByteSize());
78 AuxVector::iterator AuxVector::FindEntry(EntryType type) const {
79 for (iterator I = begin(); I != end(); ++I) {
80 if (I->type == static_cast<uint64_t>(type))
87 void AuxVector::DumpToLog(Log *log) const {
91 log->PutCString("AuxVector: ");
92 for (iterator I = begin(); I != end(); ++I) {
93 log->Printf(" %s [%" PRIu64 "]: %" PRIx64, GetEntryName(*I), I->type,
98 const char *AuxVector::GetEntryName(EntryType type) {
99 const char *name = "AT_???";
101 #define ENTRY_NAME(_type) \
105 case ENTRY_NAME(AUXV_AT_NULL); break;
106 case ENTRY_NAME(AUXV_AT_IGNORE); break;
107 case ENTRY_NAME(AUXV_AT_EXECFD); break;
108 case ENTRY_NAME(AUXV_AT_PHDR); break;
109 case ENTRY_NAME(AUXV_AT_PHENT); break;
110 case ENTRY_NAME(AUXV_AT_PHNUM); break;
111 case ENTRY_NAME(AUXV_AT_PAGESZ); break;
112 case ENTRY_NAME(AUXV_AT_BASE); break;
113 case ENTRY_NAME(AUXV_AT_FLAGS); break;
114 case ENTRY_NAME(AUXV_AT_ENTRY); break;
115 case ENTRY_NAME(AUXV_AT_NOTELF); break;
116 case ENTRY_NAME(AUXV_AT_UID); break;
117 case ENTRY_NAME(AUXV_AT_EUID); break;
118 case ENTRY_NAME(AUXV_AT_GID); break;
119 case ENTRY_NAME(AUXV_AT_EGID); break;
120 case ENTRY_NAME(AUXV_AT_CLKTCK); break;
121 case ENTRY_NAME(AUXV_AT_PLATFORM); break;
122 case ENTRY_NAME(AUXV_AT_HWCAP); break;
123 case ENTRY_NAME(AUXV_AT_FPUCW); break;
124 case ENTRY_NAME(AUXV_AT_DCACHEBSIZE); break;
125 case ENTRY_NAME(AUXV_AT_ICACHEBSIZE); break;
126 case ENTRY_NAME(AUXV_AT_UCACHEBSIZE); break;
127 case ENTRY_NAME(AUXV_AT_IGNOREPPC); break;
128 case ENTRY_NAME(AUXV_AT_SECURE); break;
129 case ENTRY_NAME(AUXV_AT_BASE_PLATFORM); break;
130 case ENTRY_NAME(AUXV_AT_RANDOM); break;
131 case ENTRY_NAME(AUXV_AT_EXECFN); break;
132 case ENTRY_NAME(AUXV_AT_SYSINFO); break;
133 case ENTRY_NAME(AUXV_AT_SYSINFO_EHDR); break;
134 case ENTRY_NAME(AUXV_AT_L1I_CACHESHAPE); break;
135 case ENTRY_NAME(AUXV_AT_L1D_CACHESHAPE); break;
136 case ENTRY_NAME(AUXV_AT_L2_CACHESHAPE); break;
137 case ENTRY_NAME(AUXV_AT_L3_CACHESHAPE); break;