--- /dev/null
+/** @file\r
+ Unit tests of the CpuExceptionHandlerLib.\r
+\r
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include "CpuExceptionHandlerTest.h"\r
+\r
+GENERAL_REGISTER mActualContextInHandler;\r
+GENERAL_REGISTER mActualContextAfterException;\r
+\r
+//\r
+// In TestCpuContextConsistency, Cpu registers will be set to mExpectedContextInHandler/mExpectedContextAfterException.\r
+// Rcx in mExpectedContextInHandler is set runtime since Rcx is needed in assembly code.\r
+// For GP and PF, Rcx is set to FaultParameter. For other exception triggered by INTn, Rcx is set to ExceptionType.\r
+//\r
+GENERAL_REGISTER mExpectedContextInHandler = { 1, 2, 3, 4, 5, 0, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe };\r
+GENERAL_REGISTER mExpectedContextAfterException = { 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e };\r
+\r
+/**\r
+ Special handler for fault exception.\r
+ Rip/Eip in SystemContext will be modified to the instruction after the exception instruction.\r
+\r
+ @param ExceptionType Exception type.\r
+ @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r
+**/\r
+VOID\r
+EFIAPI\r
+AdjustRipForFaultHandler (\r
+ IN EFI_EXCEPTION_TYPE ExceptionType,\r
+ IN EFI_SYSTEM_CONTEXT SystemContext\r
+ )\r
+{\r
+ mExceptionType = ExceptionType;\r
+ SystemContext.SystemContextX64->Rip += mFaultInstructionLength;\r
+}\r
+\r
+/**\r
+ Special handler for ConsistencyOfCpuContext test case.\r
+\r
+ @param ExceptionType Exception type.\r
+ @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r
+**/\r
+VOID\r
+EFIAPI\r
+AdjustCpuContextHandler (\r
+ IN EFI_EXCEPTION_TYPE ExceptionType,\r
+ IN EFI_SYSTEM_CONTEXT SystemContext\r
+ )\r
+{\r
+ //\r
+ // Store SystemContext in mActualContextInHandler.\r
+ //\r
+ mActualContextInHandler.Rdi = SystemContext.SystemContextX64->Rdi;\r
+ mActualContextInHandler.Rsi = SystemContext.SystemContextX64->Rsi;\r
+ mActualContextInHandler.Rbx = SystemContext.SystemContextX64->Rbx;\r
+ mActualContextInHandler.Rdx = SystemContext.SystemContextX64->Rdx;\r
+ mActualContextInHandler.Rcx = SystemContext.SystemContextX64->Rcx;\r
+ mActualContextInHandler.Rax = SystemContext.SystemContextX64->Rax;\r
+ mActualContextInHandler.R8 = SystemContext.SystemContextX64->R8;\r
+ mActualContextInHandler.R9 = SystemContext.SystemContextX64->R9;\r
+ mActualContextInHandler.R10 = SystemContext.SystemContextX64->R10;\r
+ mActualContextInHandler.R11 = SystemContext.SystemContextX64->R11;\r
+ mActualContextInHandler.R12 = SystemContext.SystemContextX64->R12;\r
+ mActualContextInHandler.R13 = SystemContext.SystemContextX64->R13;\r
+ mActualContextInHandler.R14 = SystemContext.SystemContextX64->R14;\r
+ mActualContextInHandler.R15 = SystemContext.SystemContextX64->R15;\r
+\r
+ //\r
+ // Modify cpu context. These registers will be stored in mActualContextAfterException.\r
+ // Do not handle Rsp and Rbp. CpuExceptionHandlerLib doesn't set Rsp and Rbp register\r
+ // to the value in SystemContext.\r
+ //\r
+ SystemContext.SystemContextX64->Rdi = mExpectedContextAfterException.Rdi;\r
+ SystemContext.SystemContextX64->Rsi = mExpectedContextAfterException.Rsi;\r
+ SystemContext.SystemContextX64->Rbx = mExpectedContextAfterException.Rbx;\r
+ SystemContext.SystemContextX64->Rdx = mExpectedContextAfterException.Rdx;\r
+ SystemContext.SystemContextX64->Rcx = mExpectedContextAfterException.Rcx;\r
+ SystemContext.SystemContextX64->Rax = mExpectedContextAfterException.Rax;\r
+ SystemContext.SystemContextX64->R8 = mExpectedContextAfterException.R8;\r
+ SystemContext.SystemContextX64->R9 = mExpectedContextAfterException.R9;\r
+ SystemContext.SystemContextX64->R10 = mExpectedContextAfterException.R10;\r
+ SystemContext.SystemContextX64->R11 = mExpectedContextAfterException.R11;\r
+ SystemContext.SystemContextX64->R12 = mExpectedContextAfterException.R12;\r
+ SystemContext.SystemContextX64->R13 = mExpectedContextAfterException.R13;\r
+ SystemContext.SystemContextX64->R14 = mExpectedContextAfterException.R14;\r
+ SystemContext.SystemContextX64->R15 = mExpectedContextAfterException.R15;\r
+\r
+ //\r
+ // When fault exception happens, eip/rip points to the faulting instruction.\r
+ // For now, olny GP and PF are tested in fault exception.\r
+ //\r
+ if ((ExceptionType == EXCEPT_IA32_PAGE_FAULT) || (ExceptionType == EXCEPT_IA32_GP_FAULT)) {\r
+ AdjustRipForFaultHandler (ExceptionType, SystemContext);\r
+ }\r
+}\r
+\r
+/**\r
+ Compare cpu context in ConsistencyOfCpuContext test case.\r
+ 1.Compare mActualContextInHandler with mExpectedContextInHandler.\r
+ 2.Compare mActualContextAfterException with mActualContextAfterException.\r
+\r
+ @retval UNIT_TEST_PASSED The Unit test has completed and it was successful.\r
+ @retval UNIT_TEST_ERROR_TEST_FAILED A test case assertion has failed.\r
+**/\r
+UNIT_TEST_STATUS\r
+CompareCpuContext (\r
+ VOID\r
+ )\r
+{\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.Rdi, mExpectedContextInHandler.Rdi);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.Rsi, mExpectedContextInHandler.Rsi);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.Rbx, mExpectedContextInHandler.Rbx);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.Rdx, mExpectedContextInHandler.Rdx);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.Rcx, mExpectedContextInHandler.Rcx);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.Rax, mExpectedContextInHandler.Rax);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R8, mExpectedContextInHandler.R8);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R9, mExpectedContextInHandler.R9);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R10, mExpectedContextInHandler.R10);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R11, mExpectedContextInHandler.R11);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R12, mExpectedContextInHandler.R12);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R13, mExpectedContextInHandler.R13);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R14, mExpectedContextInHandler.R14);\r
+ UT_ASSERT_EQUAL (mActualContextInHandler.R15, mExpectedContextInHandler.R15);\r
+\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.Rdi, mExpectedContextAfterException.Rdi);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.Rsi, mExpectedContextAfterException.Rsi);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.Rbx, mExpectedContextAfterException.Rbx);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.Rdx, mExpectedContextAfterException.Rdx);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.Rcx, mExpectedContextAfterException.Rcx);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.Rax, mExpectedContextAfterException.Rax);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R8, mExpectedContextAfterException.R8);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R9, mExpectedContextAfterException.R9);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R10, mExpectedContextAfterException.R10);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R11, mExpectedContextAfterException.R11);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R12, mExpectedContextAfterException.R12);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R13, mExpectedContextAfterException.R13);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R14, mExpectedContextAfterException.R14);\r
+ UT_ASSERT_EQUAL (mActualContextAfterException.R15, mExpectedContextAfterException.R15);\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+/**\r
+ Special handler for CpuStackGuard test case.\r
+\r
+ @param ExceptionType Exception type.\r
+ @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+CpuStackGuardExceptionHandler (\r
+ IN EFI_EXCEPTION_TYPE ExceptionType,\r
+ IN EFI_SYSTEM_CONTEXT SystemContext\r
+ )\r
+{\r
+ UINTN LocalVariable;\r
+\r
+ AdjustRipForFaultHandler (ExceptionType, SystemContext);\r
+ mRspAddress[0] = (UINTN)SystemContext.SystemContextX64->Rsp;\r
+ mRspAddress[1] = (UINTN)(&LocalVariable);\r
+\r
+ return;\r
+}\r
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