* Added breakpad support for Linux.

2025-08-20 12:52:30 +02:00 · 2011-09-15 07:27:31 +02:00
parent d8b07cee9c
commit d8d7347394
1163 changed files with 465521 additions and 4 deletions
--- a/thirdparty/breakpad/common/linux/dump_symbols_unittest.cc
+++ b/thirdparty/breakpad/common/linux/dump_symbols_unittest.cc
@@ -0,0 +1,162 @@
+// Copyright (c) 2011 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Ted Mielczarek <ted.mielczarek@gmail.com>
+
+// dump_symbols_unittest.cc:
+// Unittests for google_breakpad::DumpSymbols
+
+#include <elf.h>
+#include <link.h>
+#include <stdio.h>
+
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include "breakpad_googletest_includes.h"
+#include "common/linux/synth_elf.h"
+
+namespace google_breakpad {
+bool WriteSymbolFileInternal(uint8_t* obj_file,
+                             const std::string &obj_filename,
+                             const std::string &debug_dir,
+                             std::ostream &sym_stream);
+}
+
+using google_breakpad::synth_elf::ELF;
+using google_breakpad::synth_elf::StringTable;
+using google_breakpad::synth_elf::SymbolTable;
+using google_breakpad::test_assembler::kLittleEndian;
+using google_breakpad::test_assembler::Section;
+using google_breakpad::WriteSymbolFileInternal;
+using std::string;
+using std::stringstream;
+using std::vector;
+using ::testing::Test;
+
+class DumpSymbols : public Test {
+public:
+  void GetElfContents(ELF& elf) {
+    string contents;
+    ASSERT_TRUE(elf.GetContents(&contents));
+    ASSERT_LT(0, contents.size());
+
+    elfdata_v.clear();
+    elfdata_v.insert(elfdata_v.begin(), contents.begin(), contents.end());
+    elfdata = &elfdata_v[0];
+  }
+
+  vector<uint8_t> elfdata_v;
+  uint8_t* elfdata;
+};
+
+TEST_F(DumpSymbols, Invalid) {
+  Elf32_Ehdr header;
+  memset(&header, 0, sizeof(header));
+  stringstream s;
+  EXPECT_FALSE(WriteSymbolFileInternal(reinterpret_cast<uint8_t*>(&header),
+                                       "foo",
+                                       "",
+                                       s));
+}
+
+// TODO(ted): Fix the dump_symbols code to deal with cross-word-size
+// ELF files.
+#if __ELF_NATIVE_CLASS == 32
+TEST_F(DumpSymbols, SimplePublic32) {
+  ELF elf(EM_386, ELFCLASS32, kLittleEndian);
+  // Zero out text section for simplicity.
+  Section text(kLittleEndian);
+  text.Append(4096, 0);
+  elf.AddSection(".text", text, SHT_PROGBITS);
+
+  // Add a public symbol.
+  StringTable table(kLittleEndian);
+  SymbolTable syms(kLittleEndian, 4, table);
+  syms.AddSymbol("superfunc", (uint32_t)0x1000, (uint32_t)0x10,
+                 ELF32_ST_INFO(STB_GLOBAL, STT_FUNC),
+                 SHN_UNDEF + 1);
+  int index = elf.AddSection(".dynstr", table, SHT_STRTAB);
+  elf.AddSection(".dynsym", syms,
+                 SHT_DYNSYM, // type
+                 SHF_ALLOC,  // flags
+                 0,          // addr
+                 index,      // link
+                 sizeof(Elf32_Sym)); // entsize
+
+  elf.Finish();
+  GetElfContents(elf);
+
+  stringstream s;
+  ASSERT_TRUE(WriteSymbolFileInternal(elfdata,
+                                      "foo",
+                                      "",
+                                      s));
+  EXPECT_EQ("MODULE Linux x86 000000000000000000000000000000000 foo\n"
+            "PUBLIC 1000 0 superfunc\n",
+            s.str());
+}
+#endif
+
+#if __ELF_NATIVE_CLASS == 64
+TEST_F(DumpSymbols, SimplePublic64) {
+  ELF elf(EM_X86_64, ELFCLASS64, kLittleEndian);
+  // Zero out text section for simplicity.
+  Section text(kLittleEndian);
+  text.Append(4096, 0);
+  elf.AddSection(".text", text, SHT_PROGBITS);
+
+  // Add a public symbol.
+  StringTable table(kLittleEndian);
+  SymbolTable syms(kLittleEndian, 8, table);
+  syms.AddSymbol("superfunc", (uint64_t)0x1000, (uint64_t)0x10,
+                 ELF64_ST_INFO(STB_GLOBAL, STT_FUNC),
+                 SHN_UNDEF + 1);
+  int index = elf.AddSection(".dynstr", table, SHT_STRTAB);
+  elf.AddSection(".dynsym", syms,
+                 SHT_DYNSYM, // type
+                 SHF_ALLOC,  // flags
+                 0,          // addr
+                 index,      // link
+                 sizeof(Elf64_Sym)); // entsize
+
+  elf.Finish();
+  GetElfContents(elf);
+
+  stringstream s;
+  ASSERT_TRUE(WriteSymbolFileInternal(elfdata,
+                                      "foo",
+                                      "",
+                                      s));
+  EXPECT_EQ("MODULE Linux x86_64 000000000000000000000000000000000 foo\n"
+            "PUBLIC 1000 0 superfunc\n",
+            s.str());
+}
+#endif