123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175 |
- // Copyright 2019 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/profiler/arm_cfi_table.h"
- #include "testing/gtest/include/gtest/gtest.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- namespace base {
- bool operator==(const ArmCFITable::FrameEntry& a,
- const ArmCFITable::FrameEntry& b) {
- return a.cfa_offset == b.cfa_offset && a.ra_offset == b.ra_offset;
- }
- TEST(ArmCFITableTest, Parse) {
- auto parse_cfi = [](std::vector<uint16_t> data) {
- return ArmCFITable::Parse(
- {reinterpret_cast<const uint8_t*>(data.data()), data.size() * 2});
- };
- auto reader = parse_cfi({0x01, 0x00, 0x0, 0x0, 0xffff});
- EXPECT_TRUE(reader);
- EXPECT_EQ(1U, reader->GetTableSizeForTesting());
- }
- TEST(ArmCFITableTest, FindEntryForAddress) {
- // Input is generated from the CFI file:
- // STACK CFI INIT 1000 500
- // STACK CFI 1002 .cfa: sp 272 + .ra: .cfa -4 + ^ r4: .cfa -16 +
- // STACK CFI 1008 .cfa: sp 544 + .r1: .cfa -0 + ^ r4: .cfa -16 + ^
- // STACK CFI 1040 .cfa: sp 816 + .r1: .cfa -0 + ^ r4: .cfa -16 + ^
- // STACK CFI 1050 .cfa: sp 816 + .ra: .cfa -8 + ^ r4: .cfa -16 + ^
- // STACK CFI 1080 .cfa: sp 544 + .r1: .cfa -0 + ^ r4: .cfa -16 + ^
- //
- // STACK CFI INIT 2000 22
- // STACK CFI 2004 .cfa: sp 16 + .ra: .cfa -12 + ^ r4: .cfa -16 + ^
- // STACK CFI 2008 .cfa: sp 16 + .ra: .cfa -12 + ^ r4: .cfa -16 + ^
- //
- // STACK CFI INIT 2024 100
- // STACK CFI 2030 .cfa: sp 48 + .ra: .cfa -12 + ^ r4: .cfa -16 + ^
- // STACK CFI 2100 .cfa: sp 64 + .r1: .cfa -0 + ^ r4: .cfa -16 + ^
- //
- // STACK CFI INIT 2200 10
- // STACK CFI 2204 .cfa: sp 44 + .ra: .cfa -8 + ^ r4: .cfa -16 + ^
- const uint16_t input_data[] = {// UNW_INDEX size
- 0x07, 0x0,
- // UNW_INDEX function_addresses (4 byte rows).
- 0x1000, 0x0, 0x1502, 0x0, 0x2000, 0x0, 0x2024,
- 0x0, 0x2126, 0x0, 0x2200, 0x0, 0x2212, 0x0,
- // UNW_INDEX entry_data_indices (2 byte rows).
- 0x0, 0xffff, 0xb, 0x10, 0xffff, 0x15, 0xffff,
- // UNW_DATA table.
- 0x5, 0x2, 0x111, 0x8, 0x220, 0x40, 0x330, 0x50,
- 0x332, 0x80, 0x220, 0x2, 0x4, 0x13, 0x8, 0x13,
- 0x2, 0xc, 0x33, 0xdc, 0x40, 0x1, 0x4, 0x2e};
- auto reader = ArmCFITable::Parse(
- {reinterpret_cast<const uint8_t*>(input_data), sizeof(input_data) * 2});
- EXPECT_EQ(7U, reader->GetTableSizeForTesting());
- EXPECT_FALSE(reader->FindEntryForAddress(0x01));
- EXPECT_FALSE(reader->FindEntryForAddress(0x100));
- EXPECT_FALSE(reader->FindEntryForAddress(0x1502));
- EXPECT_FALSE(reader->FindEntryForAddress(0x3000));
- EXPECT_FALSE(reader->FindEntryForAddress(0x2212));
- auto expect_frame = [&](ArmCFITable::FrameEntry expected, uintptr_t address) {
- auto result = reader->FindEntryForAddress(address);
- EXPECT_TRUE(result.has_value());
- EXPECT_EQ(expected, *result);
- };
- expect_frame({0x110, 0x4}, 0x1002);
- expect_frame({0x110, 0x4}, 0x1003);
- expect_frame({0x220, 0x4}, 0x1008);
- expect_frame({0x220, 0x4}, 0x1009);
- expect_frame({0x220, 0x4}, 0x1039);
- expect_frame({0x220, 0x8}, 0x1080);
- expect_frame({0x220, 0x8}, 0x1100);
- expect_frame({0x0, 0x0}, 0x2024);
- expect_frame({0x30, 0xc}, 0x2050);
- expect_frame({0x2c, 0x8}, 0x2208);
- expect_frame({0x2c, 0x8}, 0x2210);
- }
- TEST(ArmCFITableTest, InvalidTable) {
- auto parse_cfi_and_find =
- [](std::vector<uint16_t> data,
- uintptr_t address) -> absl::optional<ArmCFITable::FrameEntry> {
- auto reader = ArmCFITable::Parse(
- {reinterpret_cast<const uint8_t*>(data.data()), data.size() * 2});
- if (!reader)
- return absl::nullopt;
- return reader->FindEntryForAddress(address);
- };
- // No data.
- EXPECT_FALSE(parse_cfi_and_find({}, 0x0));
- // Empty UNW_INDEX.
- EXPECT_FALSE(parse_cfi_and_find({0x00, 0x00}, 0x0));
- // Missing UNW_INDEX data.
- EXPECT_FALSE(parse_cfi_and_find({0x01, 0x00}, 0x0));
- // No unwind info for address.
- EXPECT_FALSE(parse_cfi_and_find({0x02, 0x00, 0x0, 0x0, 0xffff}, 0x0));
- // entry_data_indices out of bound.
- EXPECT_FALSE(parse_cfi_and_find(
- {
- // UNW_INDEX size
- 0x01,
- 0x0,
- // UNW_INDEX
- 0x1000,
- 0x0,
- 0x0,
- // UNW_DATA
- 0x5,
- },
- 0x1000));
- EXPECT_FALSE(parse_cfi_and_find(
- {
- // UNW_INDEX size
- 0x01,
- 0x0,
- // UNW_INDEX
- 0x1000,
- 0x0,
- 0x0,
- },
- 0x1000));
- // Missing CFIDataRow.
- EXPECT_FALSE(parse_cfi_and_find(
- {
- // UNW_INDEX size
- 0x01,
- 0x0,
- // UNW_INDEX
- 0x1000,
- 0x0,
- 0x0,
- // UNW_DATA
- 0x5,
- 0x0,
- },
- 0x1000));
- // Invalid CFIDataRow.
- EXPECT_FALSE(parse_cfi_and_find(
- {
- // UNW_INDEX size
- 0x01,
- 0x0,
- // UNW_INDEX
- 0x1000,
- 0x0,
- 0x0,
- // UNW_DATA
- 0x1,
- 0x2,
- 0x0,
- },
- 0x1002));
- }
- } // namespace base
|