Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 326 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Target/UnixSignals.cpp b/gnu/llvm/lldb/source/Target/UnixSignals.cpp
new file mode 100644
index 00000000000..72d9fc0a0a6
--- /dev/null
+++ b/gnu/llvm/lldb/source/Target/UnixSignals.cpp
@@ -0,0 +1,326 @@
+//===-- UnixSignals.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 "lldb/Target/UnixSignals.h"
+#include "Plugins/Process/Utility/FreeBSDSignals.h"
+#include "Plugins/Process/Utility/LinuxSignals.h"
+#include "Plugins/Process/Utility/MipsLinuxSignals.h"
+#include "Plugins/Process/Utility/NetBSDSignals.h"
+#include "Plugins/Process/Utility/OpenBSDSignals.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Host/StringConvert.h"
+#include "lldb/Utility/ArchSpec.h"
+
+using namespace lldb_private;
+
+UnixSignals::Signal::Signal(const char *name, bool default_suppress,
+                            bool default_stop, bool default_notify,
+                            const char *description, const char *alias)
+    : m_name(name), m_alias(alias), m_description(),
+      m_suppress(default_suppress), m_stop(default_stop),
+      m_notify(default_notify) {
+  if (description)
+    m_description.assign(description);
+}
+
+lldb::UnixSignalsSP UnixSignals::Create(const ArchSpec &arch) {
+  const auto &triple = arch.GetTriple();
+  switch (triple.getOS()) {
+  case llvm::Triple::Linux: {
+    switch (triple.getArch()) {
+    case llvm::Triple::mips:
+    case llvm::Triple::mipsel:
+    case llvm::Triple::mips64:
+    case llvm::Triple::mips64el:
+      return std::make_shared<MipsLinuxSignals>();
+    default:
+      return std::make_shared<LinuxSignals>();
+    }
+  }
+  case llvm::Triple::FreeBSD:
+    return std::make_shared<FreeBSDSignals>();
+  case llvm::Triple::OpenBSD:
+    return std::make_shared<OpenBSDSignals>();
+  case llvm::Triple::NetBSD:
+    return std::make_shared<NetBSDSignals>();
+  default:
+    return std::make_shared<UnixSignals>();
+  }
+}
+
+lldb::UnixSignalsSP UnixSignals::CreateForHost() {
+  static lldb::UnixSignalsSP s_unix_signals_sp =
+      Create(HostInfo::GetArchitecture());
+  return s_unix_signals_sp;
+}
+
+// UnixSignals constructor
+UnixSignals::UnixSignals() { Reset(); }
+
+UnixSignals::UnixSignals(const UnixSignals &rhs) : m_signals(rhs.m_signals) {}
+
+UnixSignals::~UnixSignals() = default;
+
+void UnixSignals::Reset() {
+  // This builds one standard set of Unix Signals.  If yours aren't quite in
+  // this order, you can either subclass this class, and use Add & Remove to
+  // change them
+  // or you can subclass and build them afresh in your constructor;
+  //
+  // Note: the signals below are the Darwin signals.  Do not change these!
+  m_signals.clear();
+  //        SIGNO  NAME          SUPPRESS STOP   NOTIFY DESCRIPTION
+  //        ====== ============  ======== ====== ======
+  //        ===================================================
+  AddSignal(1, "SIGHUP", false, true, true, "hangup");
+  AddSignal(2, "SIGINT", true, true, true, "interrupt");
+  AddSignal(3, "SIGQUIT", false, true, true, "quit");
+  AddSignal(4, "SIGILL", false, true, true, "illegal instruction");
+  AddSignal(5, "SIGTRAP", true, true, true,
+            "trace trap (not reset when caught)");
+  AddSignal(6, "SIGABRT", false, true, true, "abort()");
+  AddSignal(7, "SIGEMT", false, true, true, "pollable event");
+  AddSignal(8, "SIGFPE", false, true, true, "floating point exception");
+  AddSignal(9, "SIGKILL", false, true, true, "kill");
+  AddSignal(10, "SIGBUS", false, true, true, "bus error");
+  AddSignal(11, "SIGSEGV", false, true, true, "segmentation violation");
+  AddSignal(12, "SIGSYS", false, true, true, "bad argument to system call");
+  AddSignal(13, "SIGPIPE", false, false, false,
+            "write on a pipe with no one to read it");
+  AddSignal(14, "SIGALRM", false, false, false, "alarm clock");
+  AddSignal(15, "SIGTERM", false, true, true,
+            "software termination signal from kill");
+  AddSignal(16, "SIGURG", false, false, false,
+            "urgent condition on IO channel");
+  AddSignal(17, "SIGSTOP", true, true, true,
+            "sendable stop signal not from tty");
+  AddSignal(18, "SIGTSTP", false, true, true, "stop signal from tty");
+  AddSignal(19, "SIGCONT", false, true, true, "continue a stopped process");
+  AddSignal(20, "SIGCHLD", false, false, false,
+            "to parent on child stop or exit");
+  AddSignal(21, "SIGTTIN", false, true, true,
+            "to readers process group upon background tty read");
+  AddSignal(22, "SIGTTOU", false, true, true,
+            "to readers process group upon background tty write");
+  AddSignal(23, "SIGIO", false, false, false, "input/output possible signal");
+  AddSignal(24, "SIGXCPU", false, true, true, "exceeded CPU time limit");
+  AddSignal(25, "SIGXFSZ", false, true, true, "exceeded file size limit");
+  AddSignal(26, "SIGVTALRM", false, false, false, "virtual time alarm");
+  AddSignal(27, "SIGPROF", false, false, false, "profiling time alarm");
+  AddSignal(28, "SIGWINCH", false, false, false, "window size changes");
+  AddSignal(29, "SIGINFO", false, true, true, "information request");
+  AddSignal(30, "SIGUSR1", false, true, true, "user defined signal 1");
+  AddSignal(31, "SIGUSR2", false, true, true, "user defined signal 2");
+}
+
+void UnixSignals::AddSignal(int signo, const char *name, bool default_suppress,
+                            bool default_stop, bool default_notify,
+                            const char *description, const char *alias) {
+  Signal new_signal(name, default_suppress, default_stop, default_notify,
+                    description, alias);
+  m_signals.insert(std::make_pair(signo, new_signal));
+  ++m_version;
+}
+
+void UnixSignals::RemoveSignal(int signo) {
+  collection::iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end())
+    m_signals.erase(pos);
+  ++m_version;
+}
+
+const char *UnixSignals::GetSignalAsCString(int signo) const {
+  collection::const_iterator pos = m_signals.find(signo);
+  if (pos == m_signals.end())
+    return nullptr;
+  else
+    return pos->second.m_name.GetCString();
+}
+
+bool UnixSignals::SignalIsValid(int32_t signo) const {
+  return m_signals.find(signo) != m_signals.end();
+}
+
+ConstString UnixSignals::GetShortName(ConstString name) const {
+  if (name) {
+    const char *signame = name.AsCString();
+    return ConstString(signame + 3); // Remove "SIG" from name
+  }
+  return name;
+}
+
+int32_t UnixSignals::GetSignalNumberFromName(const char *name) const {
+  ConstString const_name(name);
+
+  collection::const_iterator pos, end = m_signals.end();
+  for (pos = m_signals.begin(); pos != end; pos++) {
+    if ((const_name == pos->second.m_name) ||
+        (const_name == pos->second.m_alias) ||
+        (const_name == GetShortName(pos->second.m_name)) ||
+        (const_name == GetShortName(pos->second.m_alias)))
+      return pos->first;
+  }
+
+  const int32_t signo =
+      StringConvert::ToSInt32(name, LLDB_INVALID_SIGNAL_NUMBER, 0);
+  if (signo != LLDB_INVALID_SIGNAL_NUMBER)
+    return signo;
+  return LLDB_INVALID_SIGNAL_NUMBER;
+}
+
+int32_t UnixSignals::GetFirstSignalNumber() const {
+  if (m_signals.empty())
+    return LLDB_INVALID_SIGNAL_NUMBER;
+
+  return (*m_signals.begin()).first;
+}
+
+int32_t UnixSignals::GetNextSignalNumber(int32_t current_signal) const {
+  collection::const_iterator pos = m_signals.find(current_signal);
+  collection::const_iterator end = m_signals.end();
+  if (pos == end)
+    return LLDB_INVALID_SIGNAL_NUMBER;
+  else {
+    pos++;
+    if (pos == end)
+      return LLDB_INVALID_SIGNAL_NUMBER;
+    else
+      return pos->first;
+  }
+}
+
+const char *UnixSignals::GetSignalInfo(int32_t signo, bool &should_suppress,
+                                       bool &should_stop,
+                                       bool &should_notify) const {
+  collection::const_iterator pos = m_signals.find(signo);
+  if (pos == m_signals.end())
+    return nullptr;
+  else {
+    const Signal &signal = pos->second;
+    should_suppress = signal.m_suppress;
+    should_stop = signal.m_stop;
+    should_notify = signal.m_notify;
+    return signal.m_name.AsCString("");
+  }
+}
+
+bool UnixSignals::GetShouldSuppress(int signo) const {
+  collection::const_iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end())
+    return pos->second.m_suppress;
+  return false;
+}
+
+bool UnixSignals::SetShouldSuppress(int signo, bool value) {
+  collection::iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end()) {
+    pos->second.m_suppress = value;
+    ++m_version;
+    return true;
+  }
+  return false;
+}
+
+bool UnixSignals::SetShouldSuppress(const char *signal_name, bool value) {
+  const int32_t signo = GetSignalNumberFromName(signal_name);
+  if (signo != LLDB_INVALID_SIGNAL_NUMBER)
+    return SetShouldSuppress(signo, value);
+  return false;
+}
+
+bool UnixSignals::GetShouldStop(int signo) const {
+  collection::const_iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end())
+    return pos->second.m_stop;
+  return false;
+}
+
+bool UnixSignals::SetShouldStop(int signo, bool value) {
+  collection::iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end()) {
+    pos->second.m_stop = value;
+    ++m_version;
+    return true;
+  }
+  return false;
+}
+
+bool UnixSignals::SetShouldStop(const char *signal_name, bool value) {
+  const int32_t signo = GetSignalNumberFromName(signal_name);
+  if (signo != LLDB_INVALID_SIGNAL_NUMBER)
+    return SetShouldStop(signo, value);
+  return false;
+}
+
+bool UnixSignals::GetShouldNotify(int signo) const {
+  collection::const_iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end())
+    return pos->second.m_notify;
+  return false;
+}
+
+bool UnixSignals::SetShouldNotify(int signo, bool value) {
+  collection::iterator pos = m_signals.find(signo);
+  if (pos != m_signals.end()) {
+    pos->second.m_notify = value;
+    ++m_version;
+    return true;
+  }
+  return false;
+}
+
+bool UnixSignals::SetShouldNotify(const char *signal_name, bool value) {
+  const int32_t signo = GetSignalNumberFromName(signal_name);
+  if (signo != LLDB_INVALID_SIGNAL_NUMBER)
+    return SetShouldNotify(signo, value);
+  return false;
+}
+
+int32_t UnixSignals::GetNumSignals() const { return m_signals.size(); }
+
+int32_t UnixSignals::GetSignalAtIndex(int32_t index) const {
+  if (index < 0 || m_signals.size() <= static_cast<size_t>(index))
+    return LLDB_INVALID_SIGNAL_NUMBER;
+  auto it = m_signals.begin();
+  std::advance(it, index);
+  return it->first;
+}
+
+uint64_t UnixSignals::GetVersion() const { return m_version; }
+
+std::vector<int32_t>
+UnixSignals::GetFilteredSignals(llvm::Optional<bool> should_suppress,
+                                llvm::Optional<bool> should_stop,
+                                llvm::Optional<bool> should_notify) {
+  std::vector<int32_t> result;
+  for (int32_t signo = GetFirstSignalNumber();
+       signo != LLDB_INVALID_SIGNAL_NUMBER;
+       signo = GetNextSignalNumber(signo)) {
+
+    bool signal_suppress = false;
+    bool signal_stop = false;
+    bool signal_notify = false;
+    GetSignalInfo(signo, signal_suppress, signal_stop, signal_notify);
+
+    // If any of filtering conditions are not met, we move on to the next
+    // signal.
+    if (should_suppress.hasValue() &&
+        signal_suppress != should_suppress.getValue())
+      continue;
+
+    if (should_stop.hasValue() && signal_stop != should_stop.getValue())
+      continue;
+
+    if (should_notify.hasValue() && signal_notify != should_notify.getValue())
+      continue;
+
+    result.push_back(signo);
+  }
+
+  return result;
+}