| // Copyright (c) 2010, 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, |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com> |
| |
| // dwarf_cfi_to_module_unittest.cc: Tests for google_breakpad::DwarfCFIToModule. |
| |
| #include "breakpad_googletest_includes.h" |
| #include "common/dwarf_cfi_to_module.h" |
| |
| using google_breakpad::Module; |
| using google_breakpad::DwarfCFIToModule; |
| using testing::ContainerEq; |
| using testing::Test; |
| using testing::_; |
| |
| struct MockCFIReporter: public DwarfCFIToModule::Reporter { |
| MockCFIReporter(const string &file, const string §ion) |
| : Reporter(file, section) { } |
| MOCK_METHOD2(UnnamedRegister, void(size_t offset, int reg)); |
| MOCK_METHOD2(UndefinedNotSupported, void(size_t offset, const string ®)); |
| MOCK_METHOD2(ExpressionsNotSupported, void(size_t offset, const string ®)); |
| }; |
| |
| struct DwarfCFIToModuleFixture { |
| DwarfCFIToModuleFixture() |
| : module("module name", "module os", "module arch", "module id"), |
| reporter("reporter file", "reporter section"), |
| handler(&module, register_names, &reporter) { |
| register_names.push_back("reg0"); |
| register_names.push_back("reg1"); |
| register_names.push_back("reg2"); |
| register_names.push_back("reg3"); |
| register_names.push_back("reg4"); |
| register_names.push_back("reg5"); |
| register_names.push_back("reg6"); |
| register_names.push_back("reg7"); |
| register_names.push_back("sp"); |
| register_names.push_back("pc"); |
| |
| EXPECT_CALL(reporter, UnnamedRegister(_, _)).Times(0); |
| EXPECT_CALL(reporter, UndefinedNotSupported(_, _)).Times(0); |
| EXPECT_CALL(reporter, ExpressionsNotSupported(_, _)).Times(0); |
| } |
| |
| Module module; |
| vector<string> register_names; |
| MockCFIReporter reporter; |
| DwarfCFIToModule handler; |
| vector<Module::StackFrameEntry *> entries; |
| }; |
| |
| class Entry: public DwarfCFIToModuleFixture, public Test { }; |
| |
| TEST_F(Entry, Accept) { |
| ASSERT_TRUE(handler.Entry(0x3b8961b8, 0xa21069698096fc98ULL, |
| 0xb440ce248169c8d6ULL, 3, "", 0xea93c106)); |
| ASSERT_TRUE(handler.End()); |
| module.GetStackFrameEntries(&entries); |
| EXPECT_EQ(1U, entries.size()); |
| EXPECT_EQ(0xa21069698096fc98ULL, entries[0]->address); |
| EXPECT_EQ(0xb440ce248169c8d6ULL, entries[0]->size); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Entry, AcceptOldVersion) { |
| ASSERT_TRUE(handler.Entry(0xeb60e0fc, 0x75b8806bb09eab78ULL, |
| 0xc771f44958d40bbcULL, 1, "", 0x093c945e)); |
| ASSERT_TRUE(handler.End()); |
| module.GetStackFrameEntries(&entries); |
| EXPECT_EQ(1U, entries.size()); |
| EXPECT_EQ(0x75b8806bb09eab78ULL, entries[0]->address); |
| EXPECT_EQ(0xc771f44958d40bbcULL, entries[0]->size); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| struct RuleFixture: public DwarfCFIToModuleFixture { |
| RuleFixture() : DwarfCFIToModuleFixture() { |
| entry_address = 0x89327ebf86b47492ULL; |
| entry_size = 0x2f8cd573072fe02aULL; |
| return_reg = 0x7886a346; |
| } |
| void StartEntry() { |
| ASSERT_TRUE(handler.Entry(0x4445c05c, entry_address, entry_size, |
| 3, "", return_reg)); |
| } |
| void CheckEntry() { |
| module.GetStackFrameEntries(&entries); |
| EXPECT_EQ(1U, entries.size()); |
| EXPECT_EQ(entry_address, entries[0]->address); |
| EXPECT_EQ(entry_size, entries[0]->size); |
| } |
| uint64 entry_address, entry_size; |
| unsigned return_reg; |
| }; |
| |
| class Rule: public RuleFixture, public Test { }; |
| |
| TEST_F(Rule, UndefinedRule) { |
| EXPECT_CALL(reporter, UndefinedNotSupported(_, "reg7")); |
| StartEntry(); |
| ASSERT_TRUE(handler.UndefinedRule(entry_address, 7)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, SameValueRule) { |
| StartEntry(); |
| ASSERT_TRUE(handler.SameValueRule(entry_address, 6)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| Module::RuleMap expected_initial; |
| expected_initial["reg6"] = "reg6"; |
| EXPECT_THAT(entries[0]->initial_rules, ContainerEq(expected_initial)); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, OffsetRule) { |
| StartEntry(); |
| ASSERT_TRUE(handler.OffsetRule(entry_address + 1, return_reg, |
| DwarfCFIToModule::kCFARegister, |
| 16927065)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| Module::RuleChangeMap expected_changes; |
| expected_changes[entry_address + 1][".ra"] = ".cfa 16927065 + ^"; |
| EXPECT_THAT(entries[0]->rule_changes, ContainerEq(expected_changes)); |
| } |
| |
| TEST_F(Rule, OffsetRuleNegative) { |
| StartEntry(); |
| ASSERT_TRUE(handler.OffsetRule(entry_address + 1, |
| DwarfCFIToModule::kCFARegister, 4, -34530721)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| Module::RuleChangeMap expected_changes; |
| expected_changes[entry_address + 1][".cfa"] = "reg4 -34530721 + ^"; |
| EXPECT_THAT(entries[0]->rule_changes, ContainerEq(expected_changes)); |
| } |
| |
| TEST_F(Rule, ValOffsetRule) { |
| // Use an unnamed register number, to exercise that branch of RegisterName. |
| EXPECT_CALL(reporter, UnnamedRegister(_, 10)); |
| StartEntry(); |
| ASSERT_TRUE(handler.ValOffsetRule(entry_address + 0x5ab7, |
| DwarfCFIToModule::kCFARegister, |
| 10, 61812979)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| Module::RuleChangeMap expected_changes; |
| expected_changes[entry_address + 0x5ab7][".cfa"] = |
| "unnamed_register10 61812979 +"; |
| EXPECT_THAT(entries[0]->rule_changes, ContainerEq(expected_changes)); |
| } |
| |
| TEST_F(Rule, RegisterRule) { |
| StartEntry(); |
| ASSERT_TRUE(handler.RegisterRule(entry_address, return_reg, 3)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| Module::RuleMap expected_initial; |
| expected_initial[".ra"] = "reg3"; |
| EXPECT_THAT(entries[0]->initial_rules, ContainerEq(expected_initial)); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, ExpressionRule) { |
| EXPECT_CALL(reporter, ExpressionsNotSupported(_, "reg2")); |
| StartEntry(); |
| ASSERT_TRUE(handler.ExpressionRule(entry_address + 0xf326, 2, |
| "it takes two to tango")); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, ValExpressionRule) { |
| EXPECT_CALL(reporter, ExpressionsNotSupported(_, "reg0")); |
| StartEntry(); |
| ASSERT_TRUE(handler.ValExpressionRule(entry_address + 0x6367, 0, |
| "bit off more than he could chew")); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| EXPECT_EQ(0U, entries[0]->initial_rules.size()); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, DefaultReturnAddressRule) { |
| return_reg = 2; |
| StartEntry(); |
| ASSERT_TRUE(handler.RegisterRule(entry_address, 0, 1)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| Module::RuleMap expected_initial; |
| expected_initial[".ra"] = "reg2"; |
| expected_initial["reg0"] = "reg1"; |
| EXPECT_THAT(entries[0]->initial_rules, ContainerEq(expected_initial)); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, DefaultReturnAddressRuleOverride) { |
| return_reg = 2; |
| StartEntry(); |
| ASSERT_TRUE(handler.RegisterRule(entry_address, return_reg, 1)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| Module::RuleMap expected_initial; |
| expected_initial[".ra"] = "reg1"; |
| EXPECT_THAT(entries[0]->initial_rules, ContainerEq(expected_initial)); |
| EXPECT_EQ(0U, entries[0]->rule_changes.size()); |
| } |
| |
| TEST_F(Rule, DefaultReturnAddressRuleLater) { |
| return_reg = 2; |
| StartEntry(); |
| ASSERT_TRUE(handler.RegisterRule(entry_address + 1, return_reg, 1)); |
| ASSERT_TRUE(handler.End()); |
| CheckEntry(); |
| Module::RuleMap expected_initial; |
| expected_initial[".ra"] = "reg2"; |
| EXPECT_THAT(entries[0]->initial_rules, ContainerEq(expected_initial)); |
| Module::RuleChangeMap expected_changes; |
| expected_changes[entry_address + 1][".ra"] = "reg1"; |
| EXPECT_THAT(entries[0]->rule_changes, ContainerEq(expected_changes)); |
| } |
| |