Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 73 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Plugins/Process/Utility/AuxVector.h b/gnu/llvm/lldb/source/Plugins/Process/Utility/AuxVector.h
new file mode 100644
index 00000000000..c16be68aedb
--- /dev/null
+++ b/gnu/llvm/lldb/source/Plugins/Process/Utility/AuxVector.h
@@ -0,0 +1,73 @@
+//===-- AuxVector.h ---------------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_AuxVector_H_
+#define liblldb_AuxVector_H_
+
+#include "lldb/Utility/DataExtractor.h"
+#include "lldb/Utility/Log.h"
+#include <unordered_map>
+
+class AuxVector {
+
+public:
+  AuxVector(const lldb_private::DataExtractor &data);
+
+  /// Constants describing the type of entry.
+  /// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX
+  /// information. Added AUXV prefix to avoid potential conflicts with system-
+  /// defined macros
+  enum EntryType {
+    AUXV_AT_NULL = 0,      ///< End of auxv.
+    AUXV_AT_IGNORE = 1,    ///< Ignore entry.
+    AUXV_AT_EXECFD = 2,    ///< File descriptor of program.
+    AUXV_AT_PHDR = 3,      ///< Program headers.
+    AUXV_AT_PHENT = 4,     ///< Size of program header.
+    AUXV_AT_PHNUM = 5,     ///< Number of program headers.
+    AUXV_AT_PAGESZ = 6,    ///< Page size.
+    AUXV_AT_BASE = 7,      ///< Interpreter base address.
+    AUXV_AT_FLAGS = 8,     ///< Flags.
+    AUXV_AT_ENTRY = 9,     ///< Program entry point.
+    AUXV_AT_NOTELF = 10,   ///< Set if program is not an ELF.
+    AUXV_AT_UID = 11,      ///< UID.
+    AUXV_AT_EUID = 12,     ///< Effective UID.
+    AUXV_AT_GID = 13,      ///< GID.
+    AUXV_AT_EGID = 14,     ///< Effective GID.
+    AUXV_AT_CLKTCK = 17,   ///< Clock frequency (e.g. times(2)).
+    AUXV_AT_PLATFORM = 15, ///< String identifying platform.
+    AUXV_AT_HWCAP =
+        16, ///< Machine dependent hints about processor capabilities.
+    AUXV_AT_FPUCW = 18,         ///< Used FPU control word.
+    AUXV_AT_DCACHEBSIZE = 19,   ///< Data cache block size.
+    AUXV_AT_ICACHEBSIZE = 20,   ///< Instruction cache block size.
+    AUXV_AT_UCACHEBSIZE = 21,   ///< Unified cache block size.
+    AUXV_AT_IGNOREPPC = 22,     ///< Entry should be ignored.
+    AUXV_AT_SECURE = 23,        ///< Boolean, was exec setuid-like?
+    AUXV_AT_BASE_PLATFORM = 24, ///< String identifying real platforms.
+    AUXV_AT_RANDOM = 25,        ///< Address of 16 random bytes.
+    AUXV_AT_EXECFN = 31,        ///< Filename of executable.
+    AUXV_AT_SYSINFO = 32, ///< Pointer to the global system page used for system
+                          /// calls and other nice things.
+    AUXV_AT_SYSINFO_EHDR = 33,
+    AUXV_AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches.
+    AUXV_AT_L1D_CACHESHAPE = 35,
+    AUXV_AT_L2_CACHESHAPE = 36,
+    AUXV_AT_L3_CACHESHAPE = 37,
+  };
+
+  llvm::Optional<uint64_t> GetAuxValue(enum EntryType entry_type) const;
+  void DumpToLog(lldb_private::Log *log) const;
+  const char *GetEntryName(EntryType type) const;
+
+private:
+  void ParseAuxv(const lldb_private::DataExtractor &data);
+
+  std::unordered_map<uint64_t, uint64_t> m_auxv_entries;
+};
+
+#endif