src/common/dwarf_cfi_to_module_unittest.cc - breakpad - Git at Google

 // 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,
 // 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: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>

 // dwarf_cfi_to_module_unittest.cc: Tests for google_breakpad::DwarfCFIToModule.

 #include <string>
 #include <vector>

 #include "breakpad_googletest_includes.h"
 #include "common/dwarf_cfi_to_module.h"
 #include "common/using_std_string.h"

 using std::vector;

 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 &section)
       : Reporter(file, section) { }
   MOCK_METHOD2(UnnamedRegister, void(size_t offset, int reg));
   MOCK_METHOD2(UndefinedNotSupported, void(size_t offset, const string &reg));
   MOCK_METHOD2(ExpressionsNotSupported, void(size_t offset, const string &reg));
 };

 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");
     register_names.push_back("");

     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, RegisterWithEmptyName) {
   EXPECT_CALL(reporter, UnnamedRegister(_, 10));
   EXPECT_CALL(reporter, UndefinedNotSupported(_, "unnamed_register10"));
   StartEntry();
   ASSERT_TRUE(handler.UndefinedRule(entry_address, 10));
   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(_, 11));
   StartEntry();
   ASSERT_TRUE(handler.ValOffsetRule(entry_address + 0x5ab7,
                                     DwarfCFIToModule::kCFARegister,
                                     11, 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_register11 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));
 }

 TEST(RegisterNames, I386) {
   vector<string> names = DwarfCFIToModule::RegisterNames::I386();

   EXPECT_EQ("$eax", names[0]);
   EXPECT_EQ("$ecx", names[1]);
   EXPECT_EQ("$esp", names[4]);
   EXPECT_EQ("$eip", names[8]);
 }

 TEST(RegisterNames, ARM) {
   vector<string> names = DwarfCFIToModule::RegisterNames::ARM();

   EXPECT_EQ("r0", names[0]);
   EXPECT_EQ("r10", names[10]);
   EXPECT_EQ("sp", names[13]);
   EXPECT_EQ("lr", names[14]);
   EXPECT_EQ("pc", names[15]);
 }

 TEST(RegisterNames, X86_64) {
   vector<string> names = DwarfCFIToModule::RegisterNames::X86_64();

   EXPECT_EQ("$rax", names[0]);
   EXPECT_EQ("$rdx", names[1]);
   EXPECT_EQ("$rbp", names[6]);
   EXPECT_EQ("$rsp", names[7]);
   EXPECT_EQ("$rip", names[16]);
 }
	// 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,
	// 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: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>

	// dwarf_cfi_to_module_unittest.cc: Tests for google_breakpad::DwarfCFIToModule.

	#include <string>
	#include <vector>

	#include "breakpad_googletest_includes.h"
	#include "common/dwarf_cfi_to_module.h"
	#include "common/using_std_string.h"

	using std::vector;

	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 &section)
	: Reporter(file, section) { }
	MOCK_METHOD2(UnnamedRegister, void(size_t offset, int reg));
	MOCK_METHOD2(UndefinedNotSupported, void(size_t offset, const string &reg));
	MOCK_METHOD2(ExpressionsNotSupported, void(size_t offset, const string &reg));
	};

	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");
	register_names.push_back("");

	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, RegisterWithEmptyName) {
	EXPECT_CALL(reporter, UnnamedRegister(_, 10));
	EXPECT_CALL(reporter, UndefinedNotSupported(_, "unnamed_register10"));
	StartEntry();
	ASSERT_TRUE(handler.UndefinedRule(entry_address, 10));
	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(_, 11));
	StartEntry();
	ASSERT_TRUE(handler.ValOffsetRule(entry_address + 0x5ab7,
	DwarfCFIToModule::kCFARegister,
	11, 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_register11 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));
	}

	TEST(RegisterNames, I386) {
	vector<string> names = DwarfCFIToModule::RegisterNames::I386();

	EXPECT_EQ("$eax", names[0]);
	EXPECT_EQ("$ecx", names[1]);
	EXPECT_EQ("$esp", names[4]);
	EXPECT_EQ("$eip", names[8]);
	}

	TEST(RegisterNames, ARM) {
	vector<string> names = DwarfCFIToModule::RegisterNames::ARM();

	EXPECT_EQ("r0", names[0]);
	EXPECT_EQ("r10", names[10]);
	EXPECT_EQ("sp", names[13]);
	EXPECT_EQ("lr", names[14]);
	EXPECT_EQ("pc", names[15]);
	}

	TEST(RegisterNames, X86_64) {
	vector<string> names = DwarfCFIToModule::RegisterNames::X86_64();

	EXPECT_EQ("$rax", names[0]);
	EXPECT_EQ("$rdx", names[1]);
	EXPECT_EQ("$rbp", names[6]);
	EXPECT_EQ("$rsp", names[7]);
	EXPECT_EQ("$rip", names[16]);
	}