Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 343 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/examples/functions/main.cpp b/gnu/llvm/lldb/examples/functions/main.cpp
new file mode 100644
index 00000000000..07fb206f8b1
--- /dev/null
+++ b/gnu/llvm/lldb/examples/functions/main.cpp
@@ -0,0 +1,343 @@
+//===-- main.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 <getopt.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#if defined(__APPLE__)
+#include <LLDB/LLDB.h>
+#else
+#include "LLDB/SBBlock.h"
+#include "LLDB/SBCompileUnit.h"
+#include "LLDB/SBDebugger.h"
+#include "LLDB/SBFunction.h"
+#include "LLDB/SBModule.h"
+#include "LLDB/SBProcess.h"
+#include "LLDB/SBStream.h"
+#include "LLDB/SBSymbol.h"
+#include "LLDB/SBTarget.h"
+#include "LLDB/SBThread.h"
+#endif
+
+#include <string>
+
+using namespace lldb;
+
+// This quick sample code shows how to create a debugger instance and
+// create an executable target without adding dependent shared
+// libraries. It will then set a regular expression breakpoint to get
+// breakpoint locations for all functions in the module, and use the
+// locations to extract the symbol context for each location. Then it
+// dumps all // information about the function: its name, file address
+// range, the return type (if any), and all argument types.
+//
+// To build the program, type (while in this directory):
+//
+//    $ make
+//
+// then to run this on MacOSX, specify the path to your LLDB.framework
+// library using the DYLD_FRAMEWORK_PATH option and run the executable
+//
+//    $ DYLD_FRAMEWORK_PATH=/Volumes/data/lldb/tot/build/Debug ./a.out
+//    executable_path1 [executable_path2 ...]
+class LLDBSentry {
+public:
+  LLDBSentry() {
+    // Initialize LLDB
+    SBDebugger::Initialize();
+  }
+  ~LLDBSentry() {
+    // Terminate LLDB
+    SBDebugger::Terminate();
+  }
+};
+
+static struct option g_long_options[] = {
+    {"arch", required_argument, NULL, 'a'},
+    {"canonical", no_argument, NULL, 'c'},
+    {"extern", no_argument, NULL, 'x'},
+    {"help", no_argument, NULL, 'h'},
+    {"platform", required_argument, NULL, 'p'},
+    {"verbose", no_argument, NULL, 'v'},
+    {NULL, 0, NULL, 0}};
+
+#define PROGRAM_NAME "lldb-functions"
+void usage() {
+  puts("NAME\n"
+       "    " PROGRAM_NAME
+       " -- extract all function signatures from one or more binaries.\n"
+       "\n"
+       "SYNOPSIS\n"
+       "    " PROGRAM_NAME " [[--arch=<ARCH>] [--platform=<PLATFORM>] "
+                           "[--verbose] [--help] [--canonical] --] <PATH> "
+                           "[<PATH>....]\n"
+       "\n"
+       "DESCRIPTION\n"
+       "    Loads the executable pointed to by <PATH> and dumps complete "
+       "signatures for all functions that have debug information.\n"
+       "\n"
+       "EXAMPLE\n"
+       "   " PROGRAM_NAME " --arch=x86_64 /usr/lib/dyld\n");
+  exit(0);
+}
+int main(int argc, char const *argv[]) {
+  // Use a sentry object to properly initialize/terminate LLDB.
+  LLDBSentry sentry;
+
+  SBDebugger debugger(SBDebugger::Create());
+
+  // Create a debugger instance so we can create a target
+  if (!debugger.IsValid())
+    fprintf(stderr, "error: failed to create a debugger object\n");
+
+  bool show_usage = false;
+  bool verbose = false;
+  bool canonical = false;
+  bool external_only = false;
+  const char *arch = NULL;
+  const char *platform = NULL;
+  std::string short_options("h?");
+  for (const struct option *opt = g_long_options; opt->name; ++opt) {
+    if (isprint(opt->val)) {
+      short_options.append(1, (char)opt->val);
+      switch (opt->has_arg) {
+      case no_argument:
+        break;
+      case required_argument:
+        short_options.append(1, ':');
+        break;
+      case optional_argument:
+        short_options.append(2, ':');
+        break;
+      }
+    }
+  }
+#ifdef __GLIBC__
+  optind = 0;
+#else
+  optreset = 1;
+  optind = 1;
+#endif
+  char ch;
+  while ((ch = getopt_long_only(argc, (char *const *)argv,
+                                short_options.c_str(), g_long_options, 0)) !=
+         -1) {
+    switch (ch) {
+    case 0:
+      break;
+
+    case 'a':
+      if (arch != NULL) {
+        fprintf(stderr,
+                "error: the --arch option can only be specified once\n");
+        exit(1);
+      }
+      arch = optarg;
+      break;
+
+    case 'c':
+      canonical = true;
+      break;
+
+    case 'x':
+      external_only = true;
+      break;
+
+    case 'p':
+      platform = optarg;
+      break;
+
+    case 'v':
+      verbose = true;
+      break;
+
+    case 'h':
+    case '?':
+    default:
+      show_usage = true;
+      break;
+    }
+  }
+  argc -= optind;
+  argv += optind;
+
+  const bool add_dependent_libs = false;
+  SBError error;
+  for (int arg_idx = 0; arg_idx < argc; ++arg_idx) {
+    // The first argument is the file path we want to look something up in
+    const char *exe_file_path = argv[arg_idx];
+
+    // Create a target using the executable.
+    SBTarget target = debugger.CreateTarget(exe_file_path, arch, platform,
+                                            add_dependent_libs, error);
+
+    if (error.Success()) {
+      if (target.IsValid()) {
+        SBFileSpec exe_file_spec(exe_file_path, true);
+        SBModule module(target.FindModule(exe_file_spec));
+        SBFileSpecList comp_unit_list;
+
+        if (module.IsValid()) {
+          char command[1024];
+          lldb::SBCommandReturnObject command_result;
+          snprintf(command, sizeof(command), "add-dsym --uuid %s",
+                   module.GetUUIDString());
+          debugger.GetCommandInterpreter().HandleCommand(command,
+                                                         command_result);
+          if (!command_result.Succeeded()) {
+            fprintf(stderr, "error: couldn't locate debug symbols for '%s'\n",
+                    exe_file_path);
+            exit(1);
+          }
+
+          SBFileSpecList module_list;
+          module_list.Append(exe_file_spec);
+          SBBreakpoint bp =
+              target.BreakpointCreateByRegex(".", module_list, comp_unit_list);
+
+          const size_t num_locations = bp.GetNumLocations();
+          for (uint32_t bp_loc_idx = 0; bp_loc_idx < num_locations;
+               ++bp_loc_idx) {
+            SBBreakpointLocation bp_loc = bp.GetLocationAtIndex(bp_loc_idx);
+            SBSymbolContext sc(
+                bp_loc.GetAddress().GetSymbolContext(eSymbolContextEverything));
+            if (sc.IsValid()) {
+              if (sc.GetBlock().GetContainingInlinedBlock().IsValid()) {
+                // Skip inlined functions
+                continue;
+              }
+              SBFunction function(sc.GetFunction());
+              if (function.IsValid()) {
+                addr_t lo_pc = function.GetStartAddress().GetFileAddress();
+                if (lo_pc == LLDB_INVALID_ADDRESS) {
+                  // Skip functions that don't have concrete instances in the
+                  // binary
+                  continue;
+                }
+                addr_t hi_pc = function.GetEndAddress().GetFileAddress();
+                const char *func_demangled_name = function.GetName();
+                const char *func_mangled_name = function.GetMangledName();
+
+                bool dump = true;
+                const bool is_objc_method = ((func_demangled_name[0] == '-') ||
+                                             (func_demangled_name[0] == '+')) &&
+                                            (func_demangled_name[1] == '[');
+                if (external_only) {
+                  // Dump all objective C methods, or external symbols
+                  dump = is_objc_method;
+                  if (!dump)
+                    dump = sc.GetSymbol().IsExternal();
+                }
+
+                if (dump) {
+                  if (verbose) {
+                    printf("\n   name: %s\n", func_demangled_name);
+                    if (func_mangled_name)
+                      printf("mangled: %s\n", func_mangled_name);
+                    printf("  range: [0x%16.16llx - 0x%16.16llx)\n   type: ",
+                           lo_pc, hi_pc);
+                  } else {
+                    printf("[0x%16.16llx - 0x%16.16llx) ", lo_pc, hi_pc);
+                  }
+                  SBType function_type = function.GetType();
+                  SBType return_type = function_type.GetFunctionReturnType();
+
+                  if (canonical)
+                    return_type = return_type.GetCanonicalType();
+
+                  if (func_mangled_name && func_mangled_name[0] == '_' &&
+                      func_mangled_name[1] == 'Z') {
+                    printf("%s %s\n", return_type.GetName(),
+                           func_demangled_name);
+                  } else {
+                    SBTypeList function_args =
+                        function_type.GetFunctionArgumentTypes();
+                    const size_t num_function_args = function_args.GetSize();
+
+                    if (is_objc_method) {
+                      const char *class_name_start = func_demangled_name + 2;
+
+                      if (num_function_args == 0) {
+                        printf("%c(%s)[%s\n", func_demangled_name[0],
+                               return_type.GetName(), class_name_start);
+                      } else {
+                        const char *class_name_end =
+                            strchr(class_name_start, ' ');
+                        const int class_name_len =
+                            class_name_end - class_name_start;
+                        printf("%c(%s)[%*.*s", func_demangled_name[0],
+                               return_type.GetName(), class_name_len,
+                               class_name_len, class_name_start);
+
+                        const char *selector_pos = class_name_end + 1;
+                        for (uint32_t function_arg_idx = 0;
+                             function_arg_idx < num_function_args;
+                             ++function_arg_idx) {
+                          const char *selector_end =
+                              strchr(selector_pos, ':') + 1;
+                          const int selector_len = selector_end - selector_pos;
+                          SBType function_arg_type =
+                              function_args.GetTypeAtIndex(function_arg_idx);
+
+                          if (canonical)
+                            function_arg_type =
+                                function_arg_type.GetCanonicalType();
+
+                          printf(" %*.*s", selector_len, selector_len,
+                                 selector_pos);
+                          if (function_arg_type.IsValid()) {
+                            printf("(%s)", function_arg_type.GetName());
+                          } else {
+                            printf("(?)");
+                          }
+                          selector_pos = selector_end;
+                        }
+                        printf("]\n");
+                      }
+                    } else {
+                      printf("%s ", return_type.GetName());
+                      if (strchr(func_demangled_name, '('))
+                        printf("(*)(");
+                      else
+                        printf("%s(", func_demangled_name);
+
+                      for (uint32_t function_arg_idx = 0;
+                           function_arg_idx < num_function_args;
+                           ++function_arg_idx) {
+                        SBType function_arg_type =
+                            function_args.GetTypeAtIndex(function_arg_idx);
+
+                        if (canonical)
+                          function_arg_type =
+                              function_arg_type.GetCanonicalType();
+
+                        if (function_arg_type.IsValid()) {
+                          printf("%s%s", function_arg_idx > 0 ? ", " : "",
+                                 function_arg_type.GetName());
+                        } else {
+                          printf("%s???", function_arg_idx > 0 ? ", " : "");
+                        }
+                      }
+                      printf(")\n");
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    } else {
+      fprintf(stderr, "error: %s\n", error.GetCString());
+      exit(1);
+    }
+  }
+
+  return 0;
+}