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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc | 2468 |
1 files changed, 0 insertions, 2468 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc b/toolkit/crashreporter/google-breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc deleted file mode 100644 index e50ea5fbd..000000000 --- a/toolkit/crashreporter/google-breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc +++ /dev/null @@ -1,2468 +0,0 @@ -// 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> - -// dwarf2reader_cfi_unittest.cc: Unit tests for dwarf2reader::CallFrameInfo - -#include <stdint.h> -#include <stdlib.h> - -#include <string> -#include <vector> - -// The '.eh_frame' format, used by the Linux C++ ABI for exception -// handling, is poorly specified. To help test our support for .eh_frame, -// if you #define WRITE_ELF while compiling this file, and add the -// 'include' directory from the binutils, gcc, or gdb source tree to the -// #include path, then each test that calls the -// PERHAPS_WRITE_DEBUG_FRAME_FILE or PERHAPS_WRITE_EH_FRAME_FILE will write -// an ELF file containing a .debug_frame or .eh_frame section; you can then -// use tools like readelf to examine the test data, and check the tools' -// interpretation against the test's intentions. Each ELF file is named -// "cfitest-TEST", where TEST identifies the particular test. -#ifdef WRITE_ELF -#include <errno.h> -#include <stdio.h> -#include <string.h> -extern "C" { -// To compile with WRITE_ELF, you should add the 'include' directory -// of the binutils, gcc, or gdb source tree to your #include path; -// that directory contains this header. -#include "elf/common.h" -} -#endif - -#include "breakpad_googletest_includes.h" -#include "common/dwarf/bytereader-inl.h" -#include "common/dwarf/cfi_assembler.h" -#include "common/dwarf/dwarf2reader.h" -#include "common/using_std_string.h" -#include "google_breakpad/common/breakpad_types.h" - -using google_breakpad::CFISection; -using google_breakpad::test_assembler::Label; -using google_breakpad::test_assembler::kBigEndian; -using google_breakpad::test_assembler::kLittleEndian; -using google_breakpad::test_assembler::Section; - -using dwarf2reader::DwarfPointerEncoding; -using dwarf2reader::ENDIANNESS_BIG; -using dwarf2reader::ENDIANNESS_LITTLE; -using dwarf2reader::ByteReader; -using dwarf2reader::CallFrameInfo; - -using std::vector; -using testing::InSequence; -using testing::Return; -using testing::Sequence; -using testing::Test; -using testing::_; - -#ifdef WRITE_ELF -void WriteELFFrameSection(const char *filename, const char *section_name, - const CFISection §ion); -#define PERHAPS_WRITE_DEBUG_FRAME_FILE(name, section) \ - WriteELFFrameSection("cfitest-" name, ".debug_frame", section); -#define PERHAPS_WRITE_EH_FRAME_FILE(name, section) \ - WriteELFFrameSection("cfitest-" name, ".eh_frame", section); -#else -#define PERHAPS_WRITE_DEBUG_FRAME_FILE(name, section) -#define PERHAPS_WRITE_EH_FRAME_FILE(name, section) -#endif - -class MockCallFrameInfoHandler: public CallFrameInfo::Handler { - public: - MOCK_METHOD6(Entry, bool(size_t offset, uint64 address, uint64 length, - uint8 version, const string &augmentation, - unsigned return_address)); - MOCK_METHOD2(UndefinedRule, bool(uint64 address, int reg)); - MOCK_METHOD2(SameValueRule, bool(uint64 address, int reg)); - MOCK_METHOD4(OffsetRule, bool(uint64 address, int reg, int base_register, - long offset)); - MOCK_METHOD4(ValOffsetRule, bool(uint64 address, int reg, int base_register, - long offset)); - MOCK_METHOD3(RegisterRule, bool(uint64 address, int reg, int base_register)); - MOCK_METHOD3(ExpressionRule, bool(uint64 address, int reg, - const string &expression)); - MOCK_METHOD3(ValExpressionRule, bool(uint64 address, int reg, - const string &expression)); - MOCK_METHOD0(End, bool()); - MOCK_METHOD2(PersonalityRoutine, bool(uint64 address, bool indirect)); - MOCK_METHOD2(LanguageSpecificDataArea, bool(uint64 address, bool indirect)); - MOCK_METHOD0(SignalHandler, bool()); -}; - -class MockCallFrameErrorReporter: public CallFrameInfo::Reporter { - public: - MockCallFrameErrorReporter() : Reporter("mock filename", "mock section") { } - MOCK_METHOD2(Incomplete, void(uint64, CallFrameInfo::EntryKind)); - MOCK_METHOD1(EarlyEHTerminator, void(uint64)); - MOCK_METHOD2(CIEPointerOutOfRange, void(uint64, uint64)); - MOCK_METHOD2(BadCIEId, void(uint64, uint64)); - MOCK_METHOD2(UnrecognizedVersion, void(uint64, int version)); - MOCK_METHOD2(UnrecognizedAugmentation, void(uint64, const string &)); - MOCK_METHOD2(InvalidPointerEncoding, void(uint64, uint8)); - MOCK_METHOD2(UnusablePointerEncoding, void(uint64, uint8)); - MOCK_METHOD2(RestoreInCIE, void(uint64, uint64)); - MOCK_METHOD3(BadInstruction, void(uint64, CallFrameInfo::EntryKind, uint64)); - MOCK_METHOD3(NoCFARule, void(uint64, CallFrameInfo::EntryKind, uint64)); - MOCK_METHOD3(EmptyStateStack, void(uint64, CallFrameInfo::EntryKind, uint64)); -}; - -struct CFIFixture { - - enum { kCFARegister = CallFrameInfo::Handler::kCFARegister }; - - CFIFixture() { - // Default expectations for the data handler. - // - // - Leave Entry and End without expectations, as it's probably a - // good idea to set those explicitly in each test. - // - // - Expect the *Rule functions to not be called, - // so that each test can simply list the calls they expect. - // - // I gather I could use StrictMock for this, but the manual seems - // to suggest using that only as a last resort, and this isn't so - // bad. - EXPECT_CALL(handler, UndefinedRule(_, _)).Times(0); - EXPECT_CALL(handler, SameValueRule(_, _)).Times(0); - EXPECT_CALL(handler, OffsetRule(_, _, _, _)).Times(0); - EXPECT_CALL(handler, ValOffsetRule(_, _, _, _)).Times(0); - EXPECT_CALL(handler, RegisterRule(_, _, _)).Times(0); - EXPECT_CALL(handler, ExpressionRule(_, _, _)).Times(0); - EXPECT_CALL(handler, ValExpressionRule(_, _, _)).Times(0); - EXPECT_CALL(handler, PersonalityRoutine(_, _)).Times(0); - EXPECT_CALL(handler, LanguageSpecificDataArea(_, _)).Times(0); - EXPECT_CALL(handler, SignalHandler()).Times(0); - - // Default expectations for the error/warning reporer. - EXPECT_CALL(reporter, Incomplete(_, _)).Times(0); - EXPECT_CALL(reporter, EarlyEHTerminator(_)).Times(0); - EXPECT_CALL(reporter, CIEPointerOutOfRange(_, _)).Times(0); - EXPECT_CALL(reporter, BadCIEId(_, _)).Times(0); - EXPECT_CALL(reporter, UnrecognizedVersion(_, _)).Times(0); - EXPECT_CALL(reporter, UnrecognizedAugmentation(_, _)).Times(0); - EXPECT_CALL(reporter, InvalidPointerEncoding(_, _)).Times(0); - EXPECT_CALL(reporter, UnusablePointerEncoding(_, _)).Times(0); - EXPECT_CALL(reporter, RestoreInCIE(_, _)).Times(0); - EXPECT_CALL(reporter, BadInstruction(_, _, _)).Times(0); - EXPECT_CALL(reporter, NoCFARule(_, _, _)).Times(0); - EXPECT_CALL(reporter, EmptyStateStack(_, _, _)).Times(0); - } - - MockCallFrameInfoHandler handler; - MockCallFrameErrorReporter reporter; -}; - -class CFI: public CFIFixture, public Test { }; - -TEST_F(CFI, EmptyRegion) { - EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0); - EXPECT_CALL(handler, End()).Times(0); - static const uint8_t data[] = { 42 }; - - ByteReader byte_reader(ENDIANNESS_BIG); - CallFrameInfo parser(data, 0, &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -TEST_F(CFI, IncompleteLength32) { - CFISection section(kBigEndian, 8); - section - // Not even long enough for an initial length. - .D16(0xa0f) - // Padding to keep valgrind happy. We subtract these off when we - // construct the parser. - .D16(0); - - EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0); - EXPECT_CALL(handler, End()).Times(0); - - EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown)) - .WillOnce(Return()); - - string contents; - ASSERT_TRUE(section.GetContents(&contents)); - - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(8); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size() - 2, - &byte_reader, &handler, &reporter); - EXPECT_FALSE(parser.Start()); -} - -TEST_F(CFI, IncompleteLength64) { - CFISection section(kLittleEndian, 4); - section - // An incomplete 64-bit DWARF initial length. - .D32(0xffffffff).D32(0x71fbaec2) - // Padding to keep valgrind happy. We subtract these off when we - // construct the parser. - .D32(0); - - EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0); - EXPECT_CALL(handler, End()).Times(0); - - EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown)) - .WillOnce(Return()); - - string contents; - ASSERT_TRUE(section.GetContents(&contents)); - - ByteReader byte_reader(ENDIANNESS_LITTLE); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size() - 4, - &byte_reader, &handler, &reporter); - EXPECT_FALSE(parser.Start()); -} - -TEST_F(CFI, IncompleteId32) { - CFISection section(kBigEndian, 8); - section - .D32(3) // Initial length, not long enough for id - .D8(0xd7).D8(0xe5).D8(0xf1) // incomplete id - .CIEHeader(8727, 3983, 8889, 3, "") - .FinishEntry(); - - EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0); - EXPECT_CALL(handler, End()).Times(0); - - EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown)) - .WillOnce(Return()); - - string contents; - ASSERT_TRUE(section.GetContents(&contents)); - - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(8); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_FALSE(parser.Start()); -} - -TEST_F(CFI, BadId32) { - CFISection section(kBigEndian, 8); - section - .D32(0x100) // Initial length - .D32(0xe802fade) // bogus ID - .Append(0x100 - 4, 0x42); // make the length true - section - .CIEHeader(1672, 9872, 8529, 3, "") - .FinishEntry(); - - EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0); - EXPECT_CALL(handler, End()).Times(0); - - EXPECT_CALL(reporter, CIEPointerOutOfRange(_, 0xe802fade)) - .WillOnce(Return()); - - string contents; - ASSERT_TRUE(section.GetContents(&contents)); - - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(8); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_FALSE(parser.Start()); -} - -// A lone CIE shouldn't cause any handler calls. -TEST_F(CFI, SingleCIE) { - CFISection section(kLittleEndian, 4); - section.CIEHeader(0xffe799a8, 0x3398dcdd, 0x6e9683de, 3, ""); - section.Append(10, dwarf2reader::DW_CFA_nop); - section.FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("SingleCIE", section); - - EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0); - EXPECT_CALL(handler, End()).Times(0); - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_LITTLE); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -// One FDE, one CIE. -TEST_F(CFI, OneFDE) { - CFISection section(kBigEndian, 4); - Label cie; - section - .Mark(&cie) - .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 3, "") - .FinishEntry() - .FDEHeader(cie, 0x7714740d, 0x3d5a10cd) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("OneFDE", section); - - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, 0x7714740d, 0x3d5a10cd, 3, "", 0x6b6efb87)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -// Two FDEs share a CIE. -TEST_F(CFI, TwoFDEsOneCIE) { - CFISection section(kBigEndian, 4); - Label cie; - section - // First FDE. readelf complains about this one because it makes - // a forward reference to its CIE. - .FDEHeader(cie, 0xa42744df, 0xa3b42121) - .FinishEntry() - // CIE. - .Mark(&cie) - .CIEHeader(0x04f7dc7b, 0x3d00c05f, 0xbd43cb59, 3, "") - .FinishEntry() - // Second FDE. - .FDEHeader(cie, 0x6057d391, 0x700f608d) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("TwoFDEsOneCIE", section); - - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, 0xa42744df, 0xa3b42121, 3, "", 0xbd43cb59)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, 0x6057d391, 0x700f608d, 3, "", 0xbd43cb59)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -// Two FDEs, two CIEs. -TEST_F(CFI, TwoFDEsTwoCIEs) { - CFISection section(kLittleEndian, 8); - Label cie1, cie2; - section - // First CIE. - .Mark(&cie1) - .CIEHeader(0x694d5d45, 0x4233221b, 0xbf45e65a, 3, "") - .FinishEntry() - // First FDE which cites second CIE. readelf complains about - // this one because it makes a forward reference to its CIE. - .FDEHeader(cie2, 0x778b27dfe5871f05ULL, 0x324ace3448070926ULL) - .FinishEntry() - // Second FDE, which cites first CIE. - .FDEHeader(cie1, 0xf6054ca18b10bf5fULL, 0x45fdb970d8bca342ULL) - .FinishEntry() - // Second CIE. - .Mark(&cie2) - .CIEHeader(0xfba3fad7, 0x6287e1fd, 0x61d2c581, 2, "") - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("TwoFDEsTwoCIEs", section); - - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, 0x778b27dfe5871f05ULL, 0x324ace3448070926ULL, 2, - "", 0x61d2c581)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, 0xf6054ca18b10bf5fULL, 0x45fdb970d8bca342ULL, 3, - "", 0xbf45e65a)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_LITTLE); - byte_reader.SetAddressSize(8); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -// An FDE whose CIE specifies a version we don't recognize. -TEST_F(CFI, BadVersion) { - CFISection section(kBigEndian, 4); - Label cie1, cie2; - section - .Mark(&cie1) - .CIEHeader(0xca878cf0, 0x7698ec04, 0x7b616f54, 0x52, "") - .FinishEntry() - // We should skip this entry, as its CIE specifies a version we - // don't recognize. - .FDEHeader(cie1, 0x08852292, 0x2204004a) - .FinishEntry() - // Despite the above, we should visit this entry. - .Mark(&cie2) - .CIEHeader(0x7c3ae7c9, 0xb9b9a512, 0x96cb3264, 3, "") - .FinishEntry() - .FDEHeader(cie2, 0x2094735a, 0x6e875501) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("BadVersion", section); - - EXPECT_CALL(reporter, UnrecognizedVersion(_, 0x52)) - .WillOnce(Return()); - - { - InSequence s; - // We should see no mention of the first FDE, but we should get - // a call to Entry for the second. - EXPECT_CALL(handler, Entry(_, 0x2094735a, 0x6e875501, 3, "", - 0x96cb3264)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_FALSE(parser.Start()); -} - -// An FDE whose CIE specifies an augmentation we don't recognize. -TEST_F(CFI, BadAugmentation) { - CFISection section(kBigEndian, 4); - Label cie1, cie2; - section - .Mark(&cie1) - .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 3, "spaniels!") - .FinishEntry() - // We should skip this entry, as its CIE specifies an - // augmentation we don't recognize. - .FDEHeader(cie1, 0x7714740d, 0x3d5a10cd) - .FinishEntry() - // Despite the above, we should visit this entry. - .Mark(&cie2) - .CIEHeader(0xf8bc4399, 0x8cf09931, 0xf2f519b2, 3, "") - .FinishEntry() - .FDEHeader(cie2, 0x7bf0fda0, 0xcbcd28d8) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("BadAugmentation", section); - - EXPECT_CALL(reporter, UnrecognizedAugmentation(_, "spaniels!")) - .WillOnce(Return()); - - { - InSequence s; - // We should see no mention of the first FDE, but we should get - // a call to Entry for the second. - EXPECT_CALL(handler, Entry(_, 0x7bf0fda0, 0xcbcd28d8, 3, "", - 0xf2f519b2)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_FALSE(parser.Start()); -} - -// The return address column field is a byte in CFI version 1 -// (DWARF2), but a ULEB128 value in version 3 (DWARF3). -TEST_F(CFI, CIEVersion1ReturnColumn) { - CFISection section(kBigEndian, 4); - Label cie; - section - // CIE, using the version 1 format: return column is a ubyte. - .Mark(&cie) - // Use a value for the return column that is parsed differently - // as a ubyte and as a ULEB128. - .CIEHeader(0xbcdea24f, 0x5be28286, 0x9f, 1, "") - .FinishEntry() - // FDE, citing that CIE. - .FDEHeader(cie, 0xb8d347b5, 0x825e55dc) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion1ReturnColumn", section); - - { - InSequence s; - EXPECT_CALL(handler, Entry(_, 0xb8d347b5, 0x825e55dc, 1, "", 0x9f)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -// The return address column field is a byte in CFI version 1 -// (DWARF2), but a ULEB128 value in version 3 (DWARF3). -TEST_F(CFI, CIEVersion3ReturnColumn) { - CFISection section(kBigEndian, 4); - Label cie; - section - // CIE, using the version 3 format: return column is a ULEB128. - .Mark(&cie) - // Use a value for the return column that is parsed differently - // as a ubyte and as a ULEB128. - .CIEHeader(0x0ab4758d, 0xc010fdf7, 0x89, 3, "") - .FinishEntry() - // FDE, citing that CIE. - .FDEHeader(cie, 0x86763f2b, 0x2a66dc23) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion3ReturnColumn", section); - - { - InSequence s; - EXPECT_CALL(handler, Entry(_, 0x86763f2b, 0x2a66dc23, 3, "", 0x89)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - string contents; - EXPECT_TRUE(section.GetContents(&contents)); - ByteReader byte_reader(ENDIANNESS_BIG); - byte_reader.SetAddressSize(4); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - EXPECT_TRUE(parser.Start()); -} - -struct CFIInsnFixture: public CFIFixture { - CFIInsnFixture() : CFIFixture() { - data_factor = 0xb6f; - return_register = 0x9be1ed9f; - version = 3; - cfa_base_register = 0x383a3aa; - cfa_offset = 0xf748; - } - - // Prepare SECTION to receive FDE instructions. - // - // - Append a stock CIE header that establishes the fixture's - // code_factor, data_factor, return_register, version, and - // augmentation values. - // - Have the CIE set up a CFA rule using cfa_base_register and - // cfa_offset. - // - Append a stock FDE header, referring to the above CIE, for the - // fde_size bytes at fde_start. Choose fde_start and fde_size - // appropriately for the section's address size. - // - Set appropriate expectations on handler in sequence s for the - // frame description entry and the CIE's CFA rule. - // - // On return, SECTION is ready to have FDE instructions appended to - // it, and its FinishEntry member called. - void StockCIEAndFDE(CFISection *section) { - // Choose appropriate constants for our address size. - if (section->AddressSize() == 4) { - fde_start = 0xc628ecfbU; - fde_size = 0x5dee04a2; - code_factor = 0x60b; - } else { - assert(section->AddressSize() == 8); - fde_start = 0x0005c57ce7806bd3ULL; - fde_size = 0x2699521b5e333100ULL; - code_factor = 0x01008e32855274a8ULL; - } - - // Create the CIE. - (*section) - .Mark(&cie_label) - .CIEHeader(code_factor, data_factor, return_register, version, - "") - .D8(dwarf2reader::DW_CFA_def_cfa) - .ULEB128(cfa_base_register) - .ULEB128(cfa_offset) - .FinishEntry(); - - // Create the FDE. - section->FDEHeader(cie_label, fde_start, fde_size); - - // Expect an Entry call for the FDE and a ValOffsetRule call for the - // CIE's CFA rule. - EXPECT_CALL(handler, Entry(_, fde_start, fde_size, version, "", - return_register)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister, - cfa_base_register, cfa_offset)) - .InSequence(s) - .WillOnce(Return(true)); - } - - // Run the contents of SECTION through a CallFrameInfo parser, - // expecting parser.Start to return SUCCEEDS - void ParseSection(CFISection *section, bool succeeds = true) { - string contents; - EXPECT_TRUE(section->GetContents(&contents)); - dwarf2reader::Endianness endianness; - if (section->endianness() == kBigEndian) - endianness = ENDIANNESS_BIG; - else { - assert(section->endianness() == kLittleEndian); - endianness = ENDIANNESS_LITTLE; - } - ByteReader byte_reader(endianness); - byte_reader.SetAddressSize(section->AddressSize()); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter); - if (succeeds) - EXPECT_TRUE(parser.Start()); - else - EXPECT_FALSE(parser.Start()); - } - - Label cie_label; - Sequence s; - uint64 code_factor; - int data_factor; - unsigned return_register; - unsigned version; - unsigned cfa_base_register; - int cfa_offset; - uint64 fde_start, fde_size; -}; - -class CFIInsn: public CFIInsnFixture, public Test { }; - -TEST_F(CFIInsn, DW_CFA_set_loc) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_set_loc).D32(0xb1ee3e7a) - // Use DW_CFA_def_cfa to force a handler call that we can use to - // check the effect of the DW_CFA_set_loc. - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x4defb431).ULEB128(0x6d17b0ee) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_set_loc", section); - - EXPECT_CALL(handler, - ValOffsetRule(0xb1ee3e7a, kCFARegister, 0x4defb431, 0x6d17b0ee)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_advance_loc) { - CFISection section(kBigEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_advance_loc | 0x2a) - // Use DW_CFA_def_cfa to force a handler call that we can use to - // check the effect of the DW_CFA_advance_loc. - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x5bbb3715).ULEB128(0x0186c7bf) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc", section); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start + 0x2a * code_factor, - kCFARegister, 0x5bbb3715, 0x0186c7bf)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_advance_loc1) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_advance_loc1).D8(0xd8) - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x69d5696a).ULEB128(0x1eb7fc93) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc1", section); - - EXPECT_CALL(handler, - ValOffsetRule((fde_start + 0xd8 * code_factor), - kCFARegister, 0x69d5696a, 0x1eb7fc93)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_advance_loc2) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_advance_loc2).D16(0x3adb) - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x3a368bed).ULEB128(0x3194ee37) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc2", section); - - EXPECT_CALL(handler, - ValOffsetRule((fde_start + 0x3adb * code_factor), - kCFARegister, 0x3a368bed, 0x3194ee37)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_advance_loc4) { - CFISection section(kBigEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_advance_loc4).D32(0x15813c88) - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x135270c5).ULEB128(0x24bad7cb) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc4", section); - - EXPECT_CALL(handler, - ValOffsetRule((fde_start + 0x15813c88ULL * code_factor), - kCFARegister, 0x135270c5, 0x24bad7cb)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_MIPS_advance_loc8) { - code_factor = 0x2d; - CFISection section(kBigEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_MIPS_advance_loc8).D64(0x3c4f3945b92c14ULL) - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0xe17ed602).ULEB128(0x3d162e7f) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc8", section); - - EXPECT_CALL(handler, - ValOffsetRule((fde_start + 0x3c4f3945b92c14ULL * code_factor), - kCFARegister, 0xe17ed602, 0x3d162e7f)) - .InSequence(s) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_def_cfa) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x4e363a85).ULEB128(0x815f9aa7) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_def_cfa", section); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x4e363a85, 0x815f9aa7)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_def_cfa_sf) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_sf).ULEB128(0x8ccb32b7).LEB128(0x9ea) - .D8(dwarf2reader::DW_CFA_def_cfa_sf).ULEB128(0x9b40f5da).LEB128(-0x40a2) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x8ccb32b7, - 0x9ea * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x9b40f5da, - -0x40a2 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_def_cfa_register) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_register).ULEB128(0x3e7e9363) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x3e7e9363, cfa_offset)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -// DW_CFA_def_cfa_register should have no effect when applied to a -// non-base/offset rule. -TEST_F(CFIInsn, DW_CFA_def_cfa_registerBadRule) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_expression).Block("needle in a haystack") - .D8(dwarf2reader::DW_CFA_def_cfa_register).ULEB128(0xf1b49e49) - .FinishEntry(); - - EXPECT_CALL(handler, - ValExpressionRule(fde_start, kCFARegister, - "needle in a haystack")) - .WillRepeatedly(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_def_cfa_offset) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_offset).ULEB128(0x1e8e3b9b) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, cfa_base_register, - 0x1e8e3b9b)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_def_cfa_offset_sf) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_offset_sf).LEB128(0x970) - .D8(dwarf2reader::DW_CFA_def_cfa_offset_sf).LEB128(-0x2cd) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, cfa_base_register, - 0x970 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, cfa_base_register, - -0x2cd * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -// DW_CFA_def_cfa_offset should have no effect when applied to a -// non-base/offset rule. -TEST_F(CFIInsn, DW_CFA_def_cfa_offsetBadRule) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_expression).Block("six ways to Sunday") - .D8(dwarf2reader::DW_CFA_def_cfa_offset).ULEB128(0x1e8e3b9b) - .FinishEntry(); - - EXPECT_CALL(handler, - ValExpressionRule(fde_start, kCFARegister, "six ways to Sunday")) - .WillRepeatedly(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_def_cfa_expression) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_def_cfa_expression).Block("eating crow") - .FinishEntry(); - - EXPECT_CALL(handler, ValExpressionRule(fde_start, kCFARegister, - "eating crow")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_undefined) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x300ce45d) - .FinishEntry(); - - EXPECT_CALL(handler, UndefinedRule(fde_start, 0x300ce45d)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_same_value) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0x3865a760) - .FinishEntry(); - - EXPECT_CALL(handler, SameValueRule(fde_start, 0x3865a760)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_offset) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_offset | 0x2c).ULEB128(0x9f6) - .FinishEntry(); - - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x2c, kCFARegister, 0x9f6 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_offset_extended) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_offset_extended).ULEB128(0x402b).ULEB128(0xb48) - .FinishEntry(); - - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x402b, kCFARegister, 0xb48 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_offset_extended_sf) { - CFISection section(kBigEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_offset_extended_sf) - .ULEB128(0x997c23ee).LEB128(0x2d00) - .D8(dwarf2reader::DW_CFA_offset_extended_sf) - .ULEB128(0x9519eb82).LEB128(-0xa77) - .FinishEntry(); - - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x997c23ee, - kCFARegister, 0x2d00 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x9519eb82, - kCFARegister, -0xa77 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_val_offset) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x623562fe).ULEB128(0x673) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, 0x623562fe, - kCFARegister, 0x673 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_val_offset_sf) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_offset_sf).ULEB128(0x6f4f).LEB128(0xaab) - .D8(dwarf2reader::DW_CFA_val_offset_sf).ULEB128(0x2483).LEB128(-0x8a2) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, 0x6f4f, - kCFARegister, 0xaab * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, - ValOffsetRule(fde_start, 0x2483, - kCFARegister, -0x8a2 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_register) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_register).ULEB128(0x278d18f9).ULEB128(0x1a684414) - .FinishEntry(); - - EXPECT_CALL(handler, RegisterRule(fde_start, 0x278d18f9, 0x1a684414)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_expression) { - CFISection section(kBigEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_expression).ULEB128(0xa1619fb2) - .Block("plus ça change, plus c'est la même chose") - .FinishEntry(); - - EXPECT_CALL(handler, - ExpressionRule(fde_start, 0xa1619fb2, - "plus ça change, plus c'est la même chose")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_val_expression) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0xc5e4a9e3) - .Block("he who has the gold makes the rules") - .FinishEntry(); - - EXPECT_CALL(handler, - ValExpressionRule(fde_start, 0xc5e4a9e3, - "he who has the gold makes the rules")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_restore) { - CFISection section(kLittleEndian, 8); - code_factor = 0x01bd188a9b1fa083ULL; - data_factor = -0x1ac8; - return_register = 0x8c35b049; - version = 2; - fde_start = 0x2d70fe998298bbb1ULL; - fde_size = 0x46ccc2e63cf0b108ULL; - Label cie; - section - .Mark(&cie) - .CIEHeader(code_factor, data_factor, return_register, version, - "") - // Provide a CFA rule, because register rules require them. - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x6ca1d50e).ULEB128(0x372e38e8) - // Provide an offset(N) rule for register 0x3c. - .D8(dwarf2reader::DW_CFA_offset | 0x3c).ULEB128(0xb348) - .FinishEntry() - // In the FDE... - .FDEHeader(cie, fde_start, fde_size) - // At a second address, provide a new offset(N) rule for register 0x3c. - .D8(dwarf2reader::DW_CFA_advance_loc | 0x13) - .D8(dwarf2reader::DW_CFA_offset | 0x3c).ULEB128(0x9a50) - // At a third address, restore the original rule for register 0x3c. - .D8(dwarf2reader::DW_CFA_advance_loc | 0x01) - .D8(dwarf2reader::DW_CFA_restore | 0x3c) - .FinishEntry(); - - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, fde_start, fde_size, version, "", return_register)) - .WillOnce(Return(true)); - // CIE's CFA rule. - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x6ca1d50e, 0x372e38e8)) - .WillOnce(Return(true)); - // CIE's rule for register 0x3c. - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x3c, kCFARegister, 0xb348 * data_factor)) - .WillOnce(Return(true)); - // FDE's rule for register 0x3c. - EXPECT_CALL(handler, - OffsetRule(fde_start + 0x13 * code_factor, 0x3c, - kCFARegister, 0x9a50 * data_factor)) - .WillOnce(Return(true)); - // Restore CIE's rule for register 0x3c. - EXPECT_CALL(handler, - OffsetRule(fde_start + (0x13 + 0x01) * code_factor, 0x3c, - kCFARegister, 0xb348 * data_factor)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_restoreNoRule) { - CFISection section(kBigEndian, 4); - code_factor = 0x005f78143c1c3b82ULL; - data_factor = 0x25d0; - return_register = 0xe8; - version = 1; - fde_start = 0x4062e30f; - fde_size = 0x5302a389; - Label cie; - section - .Mark(&cie) - .CIEHeader(code_factor, data_factor, return_register, version, "") - // Provide a CFA rule, because register rules require them. - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x470aa334).ULEB128(0x099ef127) - .FinishEntry() - // In the FDE... - .FDEHeader(cie, fde_start, fde_size) - // At a second address, provide an offset(N) rule for register 0x2c. - .D8(dwarf2reader::DW_CFA_advance_loc | 0x7) - .D8(dwarf2reader::DW_CFA_offset | 0x2c).ULEB128(0x1f47) - // At a third address, restore the (missing) CIE rule for register 0x2c. - .D8(dwarf2reader::DW_CFA_advance_loc | 0xb) - .D8(dwarf2reader::DW_CFA_restore | 0x2c) - .FinishEntry(); - - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, fde_start, fde_size, version, "", return_register)) - .WillOnce(Return(true)); - // CIE's CFA rule. - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x470aa334, 0x099ef127)) - .WillOnce(Return(true)); - // FDE's rule for register 0x2c. - EXPECT_CALL(handler, - OffsetRule(fde_start + 0x7 * code_factor, 0x2c, - kCFARegister, 0x1f47 * data_factor)) - .WillOnce(Return(true)); - // Restore CIE's (missing) rule for register 0x2c. - EXPECT_CALL(handler, - SameValueRule(fde_start + (0x7 + 0xb) * code_factor, 0x2c)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_restore_extended) { - CFISection section(kBigEndian, 4); - code_factor = 0x126e; - data_factor = -0xd8b; - return_register = 0x77711787; - version = 3; - fde_start = 0x01f55a45; - fde_size = 0x452adb80; - Label cie; - section - .Mark(&cie) - .CIEHeader(code_factor, data_factor, return_register, version, - "", true /* dwarf64 */ ) - // Provide a CFA rule, because register rules require them. - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x56fa0edd).ULEB128(0x097f78a5) - // Provide an offset(N) rule for register 0x0f9b8a1c. - .D8(dwarf2reader::DW_CFA_offset_extended) - .ULEB128(0x0f9b8a1c).ULEB128(0xc979) - .FinishEntry() - // In the FDE... - .FDEHeader(cie, fde_start, fde_size) - // At a second address, provide a new offset(N) rule for reg 0x0f9b8a1c. - .D8(dwarf2reader::DW_CFA_advance_loc | 0x3) - .D8(dwarf2reader::DW_CFA_offset_extended) - .ULEB128(0x0f9b8a1c).ULEB128(0x3b7b) - // At a third address, restore the original rule for register 0x0f9b8a1c. - .D8(dwarf2reader::DW_CFA_advance_loc | 0x04) - .D8(dwarf2reader::DW_CFA_restore_extended).ULEB128(0x0f9b8a1c) - .FinishEntry(); - - { - InSequence s; - EXPECT_CALL(handler, - Entry(_, fde_start, fde_size, version, "", return_register)) - .WillOnce(Return(true)); - // CIE's CFA rule. - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x56fa0edd, 0x097f78a5)) - .WillOnce(Return(true)); - // CIE's rule for register 0x0f9b8a1c. - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x0f9b8a1c, kCFARegister, - 0xc979 * data_factor)) - .WillOnce(Return(true)); - // FDE's rule for register 0x0f9b8a1c. - EXPECT_CALL(handler, - OffsetRule(fde_start + 0x3 * code_factor, 0x0f9b8a1c, - kCFARegister, 0x3b7b * data_factor)) - .WillOnce(Return(true)); - // Restore CIE's rule for register 0x0f9b8a1c. - EXPECT_CALL(handler, - OffsetRule(fde_start + (0x3 + 0x4) * code_factor, 0x0f9b8a1c, - kCFARegister, 0xc979 * data_factor)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - } - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_remember_and_restore_state) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - - // We create a state, save it, modify it, and then restore. We - // refer to the state that is overridden the restore as the - // "outgoing" state, and the restored state the "incoming" state. - // - // Register outgoing incoming expect - // 1 offset(N) no rule new "same value" rule - // 2 register(R) offset(N) report changed rule - // 3 offset(N) offset(M) report changed offset - // 4 offset(N) offset(N) no report - // 5 offset(N) no rule new "same value" rule - section - // Create the "incoming" state, which we will save and later restore. - .D8(dwarf2reader::DW_CFA_offset | 2).ULEB128(0x9806) - .D8(dwarf2reader::DW_CFA_offset | 3).ULEB128(0x995d) - .D8(dwarf2reader::DW_CFA_offset | 4).ULEB128(0x7055) - .D8(dwarf2reader::DW_CFA_remember_state) - // Advance to a new instruction; an implementation could legitimately - // ignore all but the final rule for a given register at a given address. - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - // Create the "outgoing" state, which we will discard. - .D8(dwarf2reader::DW_CFA_offset | 1).ULEB128(0xea1a) - .D8(dwarf2reader::DW_CFA_register).ULEB128(2).ULEB128(0x1d2a3767) - .D8(dwarf2reader::DW_CFA_offset | 3).ULEB128(0xdd29) - .D8(dwarf2reader::DW_CFA_offset | 5).ULEB128(0xf1ce) - // At a third address, restore the incoming state. - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - uint64 addr = fde_start; - - // Expect the incoming rules to be reported. - EXPECT_CALL(handler, OffsetRule(addr, 2, kCFARegister, 0x9806 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0x995d * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(addr, 4, kCFARegister, 0x7055 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - - addr += code_factor; - - // After the save, we establish the outgoing rule set. - EXPECT_CALL(handler, OffsetRule(addr, 1, kCFARegister, 0xea1a * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, RegisterRule(addr, 2, 0x1d2a3767)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0xdd29 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(addr, 5, kCFARegister, 0xf1ce * data_factor)) - .InSequence(s).WillOnce(Return(true)); - - addr += code_factor; - - // Finally, after the restore, expect to see the differences from - // the outgoing to the incoming rules reported. - EXPECT_CALL(handler, SameValueRule(addr, 1)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(addr, 2, kCFARegister, 0x9806 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0x995d * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, SameValueRule(addr, 5)) - .InSequence(s).WillOnce(Return(true)); - - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -// Check that restoring a rule set reports changes to the CFA rule. -TEST_F(CFIInsn, DW_CFA_remember_and_restore_stateCFA) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - - section - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_def_cfa_offset).ULEB128(0x90481102) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor, kCFARegister, - cfa_base_register, 0x90481102)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor * 2, kCFARegister, - cfa_base_register, cfa_offset)) - .InSequence(s).WillOnce(Return(true)); - - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_nop) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_nop) - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x3fb8d4f1).ULEB128(0x078dc67b) - .D8(dwarf2reader::DW_CFA_nop) - .FinishEntry(); - - EXPECT_CALL(handler, - ValOffsetRule(fde_start, kCFARegister, 0x3fb8d4f1, 0x078dc67b)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_GNU_window_save) { - CFISection section(kBigEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_GNU_window_save) - .FinishEntry(); - - // Don't include all the rules in any particular sequence. - - // The caller's %o0-%o7 have become the callee's %i0-%i7. This is - // the GCC register numbering. - for (int i = 8; i < 16; i++) - EXPECT_CALL(handler, RegisterRule(fde_start, i, i + 16)) - .WillOnce(Return(true)); - // The caller's %l0-%l7 and %i0-%i7 have been saved at the top of - // its frame. - for (int i = 16; i < 32; i++) - EXPECT_CALL(handler, OffsetRule(fde_start, i, kCFARegister, (i-16) * 4)) - .WillOnce(Return(true)); - - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_GNU_args_size) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_GNU_args_size).ULEB128(0xeddfa520) - // Verify that we see this, meaning we parsed the above properly. - .D8(dwarf2reader::DW_CFA_offset | 0x23).ULEB128(0x269) - .FinishEntry(); - - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x23, kCFARegister, 0x269 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIInsn, DW_CFA_GNU_negative_offset_extended) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_GNU_negative_offset_extended) - .ULEB128(0x430cc87a).ULEB128(0x613) - .FinishEntry(); - - EXPECT_CALL(handler, - OffsetRule(fde_start, 0x430cc87a, - kCFARegister, -0x613 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion); -} - -// Three FDEs: skip the second -TEST_F(CFIInsn, SkipFDE) { - CFISection section(kBigEndian, 4); - Label cie; - section - // CIE, used by all FDEs. - .Mark(&cie) - .CIEHeader(0x010269f2, 0x9177, 0xedca5849, 2, "") - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x42ed390b).ULEB128(0x98f43aad) - .FinishEntry() - // First FDE. - .FDEHeader(cie, 0xa870ebdd, 0x60f6aa4) - .D8(dwarf2reader::DW_CFA_register).ULEB128(0x3a860351).ULEB128(0x6c9a6bcf) - .FinishEntry() - // Second FDE. - .FDEHeader(cie, 0xc534f7c0, 0xf6552e9, true /* dwarf64 */) - .D8(dwarf2reader::DW_CFA_register).ULEB128(0x1b62c234).ULEB128(0x26586b18) - .FinishEntry() - // Third FDE. - .FDEHeader(cie, 0xf681cfc8, 0x7e4594e) - .D8(dwarf2reader::DW_CFA_register).ULEB128(0x26c53934).ULEB128(0x18eeb8a4) - .FinishEntry(); - - { - InSequence s; - - // Process the first FDE. - EXPECT_CALL(handler, Entry(_, 0xa870ebdd, 0x60f6aa4, 2, "", 0xedca5849)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(0xa870ebdd, kCFARegister, - 0x42ed390b, 0x98f43aad)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, RegisterRule(0xa870ebdd, 0x3a860351, 0x6c9a6bcf)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .WillOnce(Return(true)); - - // Skip the second FDE. - EXPECT_CALL(handler, Entry(_, 0xc534f7c0, 0xf6552e9, 2, "", 0xedca5849)) - .WillOnce(Return(false)); - - // Process the third FDE. - EXPECT_CALL(handler, Entry(_, 0xf681cfc8, 0x7e4594e, 2, "", 0xedca5849)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(0xf681cfc8, kCFARegister, - 0x42ed390b, 0x98f43aad)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, RegisterRule(0xf681cfc8, 0x26c53934, 0x18eeb8a4)) - .WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .WillOnce(Return(true)); - } - - ParseSection(§ion); -} - -// Quit processing in the middle of an entry's instructions. -TEST_F(CFIInsn, QuitMidentry) { - CFISection section(kLittleEndian, 8); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_register).ULEB128(0xe0cf850d).ULEB128(0x15aab431) - .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x46750aa5).Block("meat") - .FinishEntry(); - - EXPECT_CALL(handler, RegisterRule(fde_start, 0xe0cf850d, 0x15aab431)) - .InSequence(s).WillOnce(Return(false)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseSection(§ion, false); -} - -class CFIRestore: public CFIInsnFixture, public Test { }; - -TEST_F(CFIRestore, RestoreUndefinedRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x0bac878e) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, UndefinedRule(fde_start, 0x0bac878e)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreUndefinedRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x7dedff5f) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0x7dedff5f) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, UndefinedRule(fde_start, 0x7dedff5f)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, SameValueRule(fde_start + code_factor, 0x7dedff5f)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + 2 * code_factor, 0x7dedff5f)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreSameValueRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0xadbc9b3a) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, SameValueRule(fde_start, 0xadbc9b3a)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreSameValueRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0x3d90dcb5) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x3d90dcb5) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, SameValueRule(fde_start, 0x3d90dcb5)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0x3d90dcb5)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, SameValueRule(fde_start + 2 * code_factor, 0x3d90dcb5)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreOffsetRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_offset | 0x14).ULEB128(0xb6f) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, OffsetRule(fde_start, 0x14, - kCFARegister, 0xb6f * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreOffsetRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_offset | 0x21).ULEB128(0xeb7) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x21) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, OffsetRule(fde_start, 0x21, - kCFARegister, 0xeb7 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0x21)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(fde_start + 2 * code_factor, 0x21, - kCFARegister, 0xeb7 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreOffsetRuleChangedOffset) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_offset | 0x21).ULEB128(0x134) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_offset | 0x21).ULEB128(0xf4f) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, OffsetRule(fde_start, 0x21, - kCFARegister, 0x134 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(fde_start + code_factor, 0x21, - kCFARegister, 0xf4f * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, OffsetRule(fde_start + 2 * code_factor, 0x21, - kCFARegister, 0x134 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreValOffsetRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x829caee6).ULEB128(0xe4c) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x829caee6, - kCFARegister, 0xe4c * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreValOffsetRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0xf17c36d6).ULEB128(0xeb7) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xf17c36d6) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ValOffsetRule(fde_start, 0xf17c36d6, - kCFARegister, 0xeb7 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xf17c36d6)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(fde_start + 2 * code_factor, 0xf17c36d6, - kCFARegister, 0xeb7 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreValOffsetRuleChangedValOffset) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x2cf0ab1b).ULEB128(0x562) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x2cf0ab1b).ULEB128(0xe88) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x2cf0ab1b, - kCFARegister, 0x562 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor, 0x2cf0ab1b, - kCFARegister, 0xe88 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(fde_start + 2 * code_factor, 0x2cf0ab1b, - kCFARegister, 0x562 * data_factor)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreRegisterRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_register).ULEB128(0x77514acc).ULEB128(0x464de4ce) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, RegisterRule(fde_start, 0x77514acc, 0x464de4ce)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreRegisterRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_register).ULEB128(0xe39acce5).ULEB128(0x095f1559) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xe39acce5) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, RegisterRule(fde_start, 0xe39acce5, 0x095f1559)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xe39acce5)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, RegisterRule(fde_start + 2 * code_factor, 0xe39acce5, - 0x095f1559)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreRegisterRuleChangedRegister) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_register).ULEB128(0xd40e21b1).ULEB128(0x16607d6a) - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_register).ULEB128(0xd40e21b1).ULEB128(0xbabb4742) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, RegisterRule(fde_start, 0xd40e21b1, 0x16607d6a)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, RegisterRule(fde_start + code_factor, 0xd40e21b1, - 0xbabb4742)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, RegisterRule(fde_start + 2 * code_factor, 0xd40e21b1, - 0x16607d6a)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreExpressionRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x666ae152).Block("dwarf") - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ExpressionRule(fde_start, 0x666ae152, "dwarf")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreExpressionRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_expression).ULEB128(0xb5ca5c46).Block("elf") - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xb5ca5c46) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ExpressionRule(fde_start, 0xb5ca5c46, "elf")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xb5ca5c46)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ExpressionRule(fde_start + 2 * code_factor, 0xb5ca5c46, - "elf")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreExpressionRuleChangedExpression) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x500f5739).Block("smurf") - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x500f5739).Block("orc") - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ExpressionRule(fde_start, 0x500f5739, "smurf")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ExpressionRule(fde_start + code_factor, 0x500f5739, - "orc")) - .InSequence(s).WillOnce(Return(true)); - // Expectations are not wishes. - EXPECT_CALL(handler, ExpressionRule(fde_start + 2 * code_factor, 0x500f5739, - "smurf")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreValExpressionRuleUnchanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0x666ae152) - .Block("hideous") - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - EXPECT_CALL(handler, ValExpressionRule(fde_start, 0x666ae152, "hideous")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreValExpressionRuleChanged) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0xb5ca5c46) - .Block("revolting") - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xb5ca5c46) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("RestoreValExpressionRuleChanged", section); - - EXPECT_CALL(handler, ValExpressionRule(fde_start, 0xb5ca5c46, "revolting")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xb5ca5c46)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValExpressionRule(fde_start + 2 * code_factor, 0xb5ca5c46, - "revolting")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -TEST_F(CFIRestore, RestoreValExpressionRuleChangedValExpression) { - CFISection section(kLittleEndian, 4); - StockCIEAndFDE(§ion); - section - .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0x500f5739) - .Block("repulsive") - .D8(dwarf2reader::DW_CFA_remember_state) - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0x500f5739) - .Block("nauseous") - .D8(dwarf2reader::DW_CFA_advance_loc | 1) - .D8(dwarf2reader::DW_CFA_restore_state) - .FinishEntry(); - - PERHAPS_WRITE_DEBUG_FRAME_FILE("RestoreValExpressionRuleChangedValExpression", - section); - - EXPECT_CALL(handler, ValExpressionRule(fde_start, 0x500f5739, "repulsive")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValExpressionRule(fde_start + code_factor, 0x500f5739, - "nauseous")) - .InSequence(s).WillOnce(Return(true)); - // Expectations are not wishes. - EXPECT_CALL(handler, ValExpressionRule(fde_start + 2 * code_factor, 0x500f5739, - "repulsive")) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()).WillOnce(Return(true)); - - ParseSection(§ion); -} - -struct EHFrameFixture: public CFIInsnFixture { - EHFrameFixture() - : CFIInsnFixture(), section(kBigEndian, 4, true) { - encoded_pointer_bases.cfi = 0x7f496cb2; - encoded_pointer_bases.text = 0x540f67b6; - encoded_pointer_bases.data = 0xe3eab768; - section.SetEncodedPointerBases(encoded_pointer_bases); - } - CFISection section; - CFISection::EncodedPointerBases encoded_pointer_bases; - - // Parse CFIInsnFixture::ParseSection, but parse the section as - // .eh_frame data, supplying stock base addresses. - void ParseEHFrameSection(CFISection *section, bool succeeds = true) { - EXPECT_TRUE(section->ContainsEHFrame()); - string contents; - EXPECT_TRUE(section->GetContents(&contents)); - dwarf2reader::Endianness endianness; - if (section->endianness() == kBigEndian) - endianness = ENDIANNESS_BIG; - else { - assert(section->endianness() == kLittleEndian); - endianness = ENDIANNESS_LITTLE; - } - ByteReader byte_reader(endianness); - byte_reader.SetAddressSize(section->AddressSize()); - byte_reader.SetCFIDataBase(encoded_pointer_bases.cfi, - reinterpret_cast<const uint8_t *>(contents.data())); - byte_reader.SetTextBase(encoded_pointer_bases.text); - byte_reader.SetDataBase(encoded_pointer_bases.data); - CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()), - contents.size(), - &byte_reader, &handler, &reporter, true); - if (succeeds) - EXPECT_TRUE(parser.Start()); - else - EXPECT_FALSE(parser.Start()); - } - -}; - -class EHFrame: public EHFrameFixture, public Test { }; - -// A simple CIE, an FDE, and a terminator. -TEST_F(EHFrame, Terminator) { - Label cie; - section - .Mark(&cie) - .CIEHeader(9968, 2466, 67, 1, "") - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(3772).ULEB128(1372) - .FinishEntry() - .FDEHeader(cie, 0x848037a1, 0x7b30475e) - .D8(dwarf2reader::DW_CFA_set_loc).D32(0x17713850) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(5721) - .FinishEntry() - .D32(0) // Terminate the sequence. - // This FDE should be ignored. - .FDEHeader(cie, 0xf19629fe, 0x439fb09b) - .FinishEntry(); - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.Terminator", section); - - EXPECT_CALL(handler, Entry(_, 0x848037a1, 0x7b30475e, 1, "", 67)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(0x848037a1, kCFARegister, 3772, 1372)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(0x17713850, 5721)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(reporter, EarlyEHTerminator(_)) - .InSequence(s).WillOnce(Return()); - - ParseEHFrameSection(§ion); -} - -// The parser should recognize the Linux Standards Base 'z' augmentations. -TEST_F(EHFrame, SimpleFDE) { - DwarfPointerEncoding lsda_encoding = - DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect - | dwarf2reader::DW_EH_PE_datarel - | dwarf2reader::DW_EH_PE_sdata2); - DwarfPointerEncoding fde_encoding = - DwarfPointerEncoding(dwarf2reader::DW_EH_PE_textrel - | dwarf2reader::DW_EH_PE_udata2); - - section.SetPointerEncoding(fde_encoding); - section.SetEncodedPointerBases(encoded_pointer_bases); - Label cie; - section - .Mark(&cie) - .CIEHeader(4873, 7012, 100, 1, "zSLPR") - .ULEB128(7) // Augmentation data length - .D8(lsda_encoding) // LSDA pointer format - .D8(dwarf2reader::DW_EH_PE_pcrel) // personality pointer format - .EncodedPointer(0x97baa00, dwarf2reader::DW_EH_PE_pcrel) // and value - .D8(fde_encoding) // FDE pointer format - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(6706).ULEB128(31) - .FinishEntry() - .FDEHeader(cie, 0x540f6b56, 0xf686) - .ULEB128(2) // Augmentation data length - .EncodedPointer(0xe3eab475, lsda_encoding) // LSDA pointer, signed - .D8(dwarf2reader::DW_CFA_set_loc) - .EncodedPointer(0x540fa4ce, fde_encoding) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x675e) - .FinishEntry() - .D32(0); // terminator - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.SimpleFDE", section); - - EXPECT_CALL(handler, Entry(_, 0x540f6b56, 0xf686, 1, "zSLPR", 100)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, PersonalityRoutine(0x97baa00, false)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, LanguageSpecificDataArea(0xe3eab475, true)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, SignalHandler()) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(0x540f6b56, kCFARegister, 6706, 31)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(0x540fa4ce, 0x675e)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseEHFrameSection(§ion); -} - -// Check that we can handle an empty 'z' augmentation. -TEST_F(EHFrame, EmptyZ) { - Label cie; - section - .Mark(&cie) - .CIEHeader(5955, 5805, 228, 1, "z") - .ULEB128(0) // Augmentation data length - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(3629).ULEB128(247) - .FinishEntry() - .FDEHeader(cie, 0xda007738, 0xfb55c641) - .ULEB128(0) // Augmentation data length - .D8(dwarf2reader::DW_CFA_advance_loc1).D8(11) - .D8(dwarf2reader::DW_CFA_undefined).ULEB128(3769) - .FinishEntry(); - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.EmptyZ", section); - - EXPECT_CALL(handler, Entry(_, 0xda007738, 0xfb55c641, 1, "z", 228)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, ValOffsetRule(0xda007738, kCFARegister, 3629, 247)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, UndefinedRule(0xda007738 + 11 * 5955, 3769)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseEHFrameSection(§ion); -} - -// Check that we recognize bad 'z' augmentation characters. -TEST_F(EHFrame, BadZ) { - Label cie; - section - .Mark(&cie) - .CIEHeader(6937, 1045, 142, 1, "zQ") - .ULEB128(0) // Augmentation data length - .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(9006).ULEB128(7725) - .FinishEntry() - .FDEHeader(cie, 0x1293efa8, 0x236f53f2) - .ULEB128(0) // Augmentation data length - .D8(dwarf2reader::DW_CFA_advance_loc | 12) - .D8(dwarf2reader::DW_CFA_register).ULEB128(5667).ULEB128(3462) - .FinishEntry(); - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.BadZ", section); - - EXPECT_CALL(reporter, UnrecognizedAugmentation(_, "zQ")) - .WillOnce(Return()); - - ParseEHFrameSection(§ion, false); -} - -TEST_F(EHFrame, zL) { - Label cie; - DwarfPointerEncoding lsda_encoding = - DwarfPointerEncoding(dwarf2reader::DW_EH_PE_funcrel - | dwarf2reader::DW_EH_PE_udata2); - section - .Mark(&cie) - .CIEHeader(9285, 9959, 54, 1, "zL") - .ULEB128(1) // Augmentation data length - .D8(lsda_encoding) // encoding for LSDA pointer in FDE - - .FinishEntry() - .FDEHeader(cie, 0xd40091aa, 0x9aa6e746) - .ULEB128(2) // Augmentation data length - .EncodedPointer(0xd40099cd, lsda_encoding) // LSDA pointer - .FinishEntry() - .D32(0); // terminator - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zL", section); - - EXPECT_CALL(handler, Entry(_, 0xd40091aa, 0x9aa6e746, 1, "zL", 54)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, LanguageSpecificDataArea(0xd40099cd, false)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseEHFrameSection(§ion); -} - -TEST_F(EHFrame, zP) { - Label cie; - DwarfPointerEncoding personality_encoding = - DwarfPointerEncoding(dwarf2reader::DW_EH_PE_datarel - | dwarf2reader::DW_EH_PE_udata2); - section - .Mark(&cie) - .CIEHeader(1097, 6313, 17, 1, "zP") - .ULEB128(3) // Augmentation data length - .D8(personality_encoding) // encoding for personality routine - .EncodedPointer(0xe3eaccac, personality_encoding) // value - .FinishEntry() - .FDEHeader(cie, 0x0c8350c9, 0xbef11087) - .ULEB128(0) // Augmentation data length - .FinishEntry() - .D32(0); // terminator - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zP", section); - - EXPECT_CALL(handler, Entry(_, 0x0c8350c9, 0xbef11087, 1, "zP", 17)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, PersonalityRoutine(0xe3eaccac, false)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseEHFrameSection(§ion); -} - -TEST_F(EHFrame, zR) { - Label cie; - DwarfPointerEncoding pointer_encoding = - DwarfPointerEncoding(dwarf2reader::DW_EH_PE_textrel - | dwarf2reader::DW_EH_PE_sdata2); - section.SetPointerEncoding(pointer_encoding); - section - .Mark(&cie) - .CIEHeader(8011, 5496, 75, 1, "zR") - .ULEB128(1) // Augmentation data length - .D8(pointer_encoding) // encoding for FDE addresses - .FinishEntry() - .FDEHeader(cie, 0x540f9431, 0xbd0) - .ULEB128(0) // Augmentation data length - .FinishEntry() - .D32(0); // terminator - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zR", section); - - EXPECT_CALL(handler, Entry(_, 0x540f9431, 0xbd0, 1, "zR", 75)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseEHFrameSection(§ion); -} - -TEST_F(EHFrame, zS) { - Label cie; - section - .Mark(&cie) - .CIEHeader(9217, 7694, 57, 1, "zS") - .ULEB128(0) // Augmentation data length - .FinishEntry() - .FDEHeader(cie, 0xd40091aa, 0x9aa6e746) - .ULEB128(0) // Augmentation data length - .FinishEntry() - .D32(0); // terminator - - PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zS", section); - - EXPECT_CALL(handler, Entry(_, 0xd40091aa, 0x9aa6e746, 1, "zS", 57)) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, SignalHandler()) - .InSequence(s).WillOnce(Return(true)); - EXPECT_CALL(handler, End()) - .InSequence(s).WillOnce(Return(true)); - - ParseEHFrameSection(§ion); -} - -// These tests require manual inspection of the test output. -struct CFIReporterFixture { - CFIReporterFixture() : reporter("test file name", "test section name") { } - CallFrameInfo::Reporter reporter; -}; - -class CFIReporter: public CFIReporterFixture, public Test { }; - -TEST_F(CFIReporter, Incomplete) { - reporter.Incomplete(0x0102030405060708ULL, CallFrameInfo::kUnknown); -} - -TEST_F(CFIReporter, EarlyEHTerminator) { - reporter.EarlyEHTerminator(0x0102030405060708ULL); -} - -TEST_F(CFIReporter, CIEPointerOutOfRange) { - reporter.CIEPointerOutOfRange(0x0123456789abcdefULL, 0xfedcba9876543210ULL); -} - -TEST_F(CFIReporter, BadCIEId) { - reporter.BadCIEId(0x0123456789abcdefULL, 0xfedcba9876543210ULL); -} - -TEST_F(CFIReporter, UnrecognizedVersion) { - reporter.UnrecognizedVersion(0x0123456789abcdefULL, 43); -} - -TEST_F(CFIReporter, UnrecognizedAugmentation) { - reporter.UnrecognizedAugmentation(0x0123456789abcdefULL, "poodles"); -} - -TEST_F(CFIReporter, InvalidPointerEncoding) { - reporter.InvalidPointerEncoding(0x0123456789abcdefULL, 0x42); -} - -TEST_F(CFIReporter, UnusablePointerEncoding) { - reporter.UnusablePointerEncoding(0x0123456789abcdefULL, 0x42); -} - -TEST_F(CFIReporter, RestoreInCIE) { - reporter.RestoreInCIE(0x0123456789abcdefULL, 0xfedcba9876543210ULL); -} - -TEST_F(CFIReporter, BadInstruction) { - reporter.BadInstruction(0x0123456789abcdefULL, CallFrameInfo::kFDE, - 0xfedcba9876543210ULL); -} - -TEST_F(CFIReporter, NoCFARule) { - reporter.NoCFARule(0x0123456789abcdefULL, CallFrameInfo::kCIE, - 0xfedcba9876543210ULL); -} - -TEST_F(CFIReporter, EmptyStateStack) { - reporter.EmptyStateStack(0x0123456789abcdefULL, CallFrameInfo::kTerminator, - 0xfedcba9876543210ULL); -} - -TEST_F(CFIReporter, ClearingCFARule) { - reporter.ClearingCFARule(0x0123456789abcdefULL, CallFrameInfo::kFDE, - 0xfedcba9876543210ULL); -} - -#ifdef WRITE_ELF -// See comments at the top of the file mentioning WRITE_ELF for details. - -using google_breakpad::test_assembler::Section; - -struct ELFSectionHeader { - ELFSectionHeader(unsigned int set_type) - : type(set_type), flags(0), address(0), link(0), info(0), - alignment(1), entry_size(0) { } - Label name; - unsigned int type; - uint64_t flags; - uint64_t address; - Label file_offset; - Label file_size; - unsigned int link; - unsigned int info; - uint64_t alignment; - uint64_t entry_size; -}; - -void AppendSectionHeader(CFISection *table, const ELFSectionHeader &header) { - (*table) - .D32(header.name) // name, index in string tbl - .D32(header.type) // type - .Address(header.flags) // flags - .Address(header.address) // address in memory - .Address(header.file_offset) // offset in ELF file - .Address(header.file_size) // length in bytes - .D32(header.link) // link to related section - .D32(header.info) // miscellaneous - .Address(header.alignment) // alignment - .Address(header.entry_size); // entry size -} - -void WriteELFFrameSection(const char *filename, const char *cfi_name, - const CFISection &cfi) { - int elf_class = cfi.AddressSize() == 4 ? ELFCLASS32 : ELFCLASS64; - int elf_data = (cfi.endianness() == kBigEndian - ? ELFDATA2MSB : ELFDATA2LSB); - CFISection elf(cfi.endianness(), cfi.AddressSize()); - Label elf_header_size, section_table_offset; - elf - .Append("\x7f" "ELF") - .D8(elf_class) // 32-bit or 64-bit ELF - .D8(elf_data) // endianness - .D8(1) // ELF version - .D8(ELFOSABI_LINUX) // Operating System/ABI indication - .D8(0) // ABI version - .Append(7, 0xda) // padding - .D16(ET_EXEC) // file type: executable file - .D16(EM_386) // architecture: Intel IA-32 - .D32(EV_CURRENT); // ELF version - elf - .Address(0x0123456789abcdefULL) // program entry point - .Address(0) // program header offset - .Address(section_table_offset) // section header offset - .D32(0) // processor-specific flags - .D16(elf_header_size) // ELF header size in bytes */ - .D16(elf_class == ELFCLASS32 ? 32 : 56) // program header entry size - .D16(0) // program header table entry count - .D16(elf_class == ELFCLASS32 ? 40 : 64) // section header entry size - .D16(3) // section count - .D16(1) // section name string table - .Mark(&elf_header_size); - - // The null section. Every ELF file has one, as the first entry in - // the section header table. - ELFSectionHeader null_header(SHT_NULL); - null_header.file_offset = 0; - null_header.file_size = 0; - - // The CFI section. The whole reason for writing out this ELF file - // is to put this in it so that we can run other dumping programs on - // it to check its contents. - ELFSectionHeader cfi_header(SHT_PROGBITS); - cfi_header.file_size = cfi.Size(); - - // The section holding the names of the sections. This is the - // section whose index appears in the e_shstrndx member of the ELF - // header. - ELFSectionHeader section_names_header(SHT_STRTAB); - CFISection section_names(cfi.endianness(), cfi.AddressSize()); - section_names - .Mark(&null_header.name) - .AppendCString("") - .Mark(§ion_names_header.name) - .AppendCString(".shstrtab") - .Mark(&cfi_header.name) - .AppendCString(cfi_name) - .Mark(§ion_names_header.file_size); - - // Create the section table. The ELF header's e_shoff member refers - // to this, and the e_shnum member gives the number of entries it - // contains. - CFISection section_table(cfi.endianness(), cfi.AddressSize()); - AppendSectionHeader(§ion_table, null_header); - AppendSectionHeader(§ion_table, section_names_header); - AppendSectionHeader(§ion_table, cfi_header); - - // Append the section table and the section contents to the ELF file. - elf - .Mark(§ion_table_offset) - .Append(section_table) - .Mark(§ion_names_header.file_offset) - .Append(section_names) - .Mark(&cfi_header.file_offset) - .Append(cfi); - - string contents; - if (!elf.GetContents(&contents)) { - fprintf(stderr, "failed to get ELF file contents\n"); - exit(1); - } - - FILE *out = fopen(filename, "w"); - if (!out) { - fprintf(stderr, "error opening ELF file '%s': %s\n", - filename, strerror(errno)); - exit(1); - } - - if (fwrite(contents.data(), 1, contents.size(), out) != contents.size()) { - fprintf(stderr, "error writing ELF data to '%s': %s\n", - filename, strerror(errno)); - exit(1); - } - - if (fclose(out) == EOF) { - fprintf(stderr, "error closing ELF file '%s': %s\n", - filename, strerror(errno)); - exit(1); - } -} -#endif |