| // Copyright 2018 The Fuchsia 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 <zircon/hw/debug/x86.h> |
| #include <zircon/syscalls/exception.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include "src/developer/debug/ipc/decode_exception.h" |
| #include "src/developer/debug/shared/arch_x86.h" |
| |
| namespace debug_ipc { |
| namespace { |
| |
| class ArmTestInfo : public Arm64ExceptionInfo { |
| public: |
| uint32_t esr = 0; |
| |
| std::optional<uint32_t> FetchESR() const override { return esr; } |
| }; |
| |
| class X64TestInfo : public X64ExceptionInfo { |
| public: |
| X64ExceptionInfo::DebugRegs regs; |
| |
| std::optional<X64ExceptionInfo::DebugRegs> FetchDebugRegs() const override { return regs; } |
| }; |
| |
| } // namespace |
| |
| TEST(DecodeException, Arm64) { |
| ArmTestInfo info; |
| |
| // Exceptions that require no decoding. |
| EXPECT_EQ(ExceptionType::kSoftwareBreakpoint, DecodeException(ZX_EXCP_SW_BREAKPOINT, info)); |
| EXPECT_EQ(ExceptionType::kGeneral, DecodeException(ZX_EXCP_GENERAL, info)); |
| EXPECT_EQ(ExceptionType::kPageFault, DecodeException(ZX_EXCP_FATAL_PAGE_FAULT, info)); |
| EXPECT_EQ(ExceptionType::kUndefinedInstruction, |
| DecodeException(ZX_EXCP_UNDEFINED_INSTRUCTION, info)); |
| EXPECT_EQ(ExceptionType::kUnalignedAccess, DecodeException(ZX_EXCP_UNALIGNED_ACCESS, info)); |
| EXPECT_EQ(ExceptionType::kThreadStarting, DecodeException(ZX_EXCP_THREAD_STARTING, info)); |
| EXPECT_EQ(ExceptionType::kThreadExiting, DecodeException(ZX_EXCP_THREAD_EXITING, info)); |
| EXPECT_EQ(ExceptionType::kPolicyError, DecodeException(ZX_EXCP_POLICY_ERROR, info)); |
| EXPECT_EQ(ExceptionType::kProcessStarting, DecodeException(ZX_EXCP_PROCESS_STARTING, info)); |
| |
| // Hardware breakpoints. The meaty stuff. |
| info.esr = 0b110000 << 26; |
| EXPECT_EQ(ExceptionType::kHardwareBreakpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| info.esr = 0b110001 << 26; |
| EXPECT_EQ(ExceptionType::kHardwareBreakpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| |
| info.esr = 0b110010 << 26; |
| EXPECT_EQ(ExceptionType::kSingleStep, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| info.esr = 0b110011 << 26; |
| EXPECT_EQ(ExceptionType::kSingleStep, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| } |
| |
| TEST(DecodeException, X64) { |
| X64TestInfo info; |
| |
| // Exceptions that require no decoding. |
| EXPECT_EQ(ExceptionType::kSoftwareBreakpoint, DecodeException(ZX_EXCP_SW_BREAKPOINT, info)); |
| EXPECT_EQ(ExceptionType::kGeneral, DecodeException(ZX_EXCP_GENERAL, info)); |
| EXPECT_EQ(ExceptionType::kPageFault, DecodeException(ZX_EXCP_FATAL_PAGE_FAULT, info)); |
| EXPECT_EQ(ExceptionType::kUndefinedInstruction, |
| DecodeException(ZX_EXCP_UNDEFINED_INSTRUCTION, info)); |
| EXPECT_EQ(ExceptionType::kUnalignedAccess, DecodeException(ZX_EXCP_UNALIGNED_ACCESS, info)); |
| EXPECT_EQ(ExceptionType::kThreadStarting, DecodeException(ZX_EXCP_THREAD_STARTING, info)); |
| EXPECT_EQ(ExceptionType::kThreadExiting, DecodeException(ZX_EXCP_THREAD_EXITING, info)); |
| EXPECT_EQ(ExceptionType::kPolicyError, DecodeException(ZX_EXCP_POLICY_ERROR, info)); |
| EXPECT_EQ(ExceptionType::kProcessStarting, DecodeException(ZX_EXCP_PROCESS_STARTING, info)); |
| |
| // Hardware breakpoints. The meaty stuff. |
| info.regs.dr0 = 0x1111111111111111; |
| info.regs.dr1 = 0x2222222222222222; |
| info.regs.dr2 = 0x3333333333333333; |
| info.regs.dr3 = 0x4444444444444444; |
| |
| info.regs.dr6 = 0; |
| X86_DBG_STATUS_BS_SET(&info.regs.dr6, 1); |
| ASSERT_EQ(ExceptionType::kSingleStep, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| |
| info.regs.dr6 = 0; |
| X86_DBG_STATUS_B0_SET(&info.regs.dr6, 1); |
| EXPECT_EQ(ExceptionType::kHardwareBreakpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| X86_DBG_CONTROL_RW0_SET(&info.regs.dr7, 1); |
| EXPECT_EQ(ExceptionType::kWatchpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| |
| info.regs.dr6 = 0; |
| X86_DBG_STATUS_B1_SET(&info.regs.dr6, 1); |
| EXPECT_EQ(ExceptionType::kHardwareBreakpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| X86_DBG_CONTROL_RW1_SET(&info.regs.dr7, 1); |
| EXPECT_EQ(ExceptionType::kWatchpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| |
| info.regs.dr6 = 0; |
| X86_DBG_STATUS_B2_SET(&info.regs.dr6, 1); |
| EXPECT_EQ(ExceptionType::kHardwareBreakpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| X86_DBG_CONTROL_RW2_SET(&info.regs.dr7, 1); |
| EXPECT_EQ(ExceptionType::kWatchpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| |
| info.regs.dr6 = 0; |
| X86_DBG_STATUS_B3_SET(&info.regs.dr6, 1); |
| EXPECT_EQ(ExceptionType::kHardwareBreakpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| X86_DBG_CONTROL_RW3_SET(&info.regs.dr7, 1); |
| EXPECT_EQ(ExceptionType::kWatchpoint, DecodeException(ZX_EXCP_HW_BREAKPOINT, info)); |
| } |
| |
| } // namespace debug_ipc |