--- /dev/null
+/** @file\r
+ IA32-specific functions for unit-testing INTN and UINTN functions in\r
+ SafeIntLib.\r
+\r
+ Copyright (c) Microsoft Corporation.<BR>\r
+ Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include "TestBaseSafeIntLib.h"\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeInt32ToUintn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INT32 Operand;\r
+ UINTN Result;\r
+\r
+ //\r
+ // If Operand is non-negative, then it's a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeInt32ToUintn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (-1537977259);\r
+ Status = SafeInt32ToUintn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUint32ToIntn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINT32 Operand;\r
+ INTN Result;\r
+\r
+ //\r
+ // If Operand is <= MAX_INTN, then it's a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeUint32ToIntn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (0xabababab);\r
+ Status = SafeUint32ToIntn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeIntnToInt32 (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INTN Operand;\r
+ INT32 Result;\r
+\r
+ //\r
+ // INTN is same as INT32 in IA32, so this is just a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeIntnToInt32(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeIntnToUint32 (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INTN Operand;\r
+ UINT32 Result;\r
+\r
+ //\r
+ // If Operand is non-negative, then it's a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeIntnToUint32(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (-1537977259);\r
+ Status = SafeIntnToUint32(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUintnToUint32 (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Operand;\r
+ UINT32 Result;\r
+\r
+ //\r
+ // UINTN is same as UINT32 in IA32, so this is just a cast\r
+ //\r
+ Operand = 0xabababab;\r
+ Result = 0;\r
+ Status = SafeUintnToUint32(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0xabababab, Result);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUintnToIntn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Operand;\r
+ INTN Result;\r
+\r
+ //\r
+ // If Operand is <= MAX_INTN, then it's a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeUintnToIntn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (0xabababab);\r
+ Status = SafeUintnToIntn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUintnToInt64 (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Operand;\r
+ INT64 Result;\r
+\r
+ //\r
+ // UINTN is same as UINT32 in IA32, and UINT32 is a subset of\r
+ // INT64, so this is just a cast\r
+ //\r
+ Operand = 0xabababab;\r
+ Result = 0;\r
+ Status = SafeUintnToInt64(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0xabababab, Result);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeInt64ToIntn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INT64 Operand;\r
+ INTN Result;\r
+\r
+ //\r
+ // If Operand is between MIN_INTN and MAX_INTN2 inclusive, then it's a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeInt64ToIntn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ Operand = (-1537977259);\r
+ Status = SafeInt64ToIntn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL((-1537977259), Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (0x5babababefefefef);\r
+ Status = SafeInt64ToIntn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ Operand = (-6605562033422200815);\r
+ Status = SafeInt64ToIntn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeInt64ToUintn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INT64 Operand;\r
+ UINTN Result;\r
+\r
+ //\r
+ // If Operand is between 0 and MAX_UINTN inclusive, then it's a cast\r
+ //\r
+ Operand = 0xabababab;\r
+ Result = 0;\r
+ Status = SafeInt64ToUintn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0xabababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (0x5babababefefefef);\r
+ Status = SafeInt64ToUintn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ Operand = (-6605562033422200815);\r
+ Status = SafeInt64ToUintn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUint64ToIntn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINT64 Operand;\r
+ INTN Result;\r
+\r
+ //\r
+ // If Operand is <= MAX_INTN, then it's a cast\r
+ //\r
+ Operand = 0x5bababab;\r
+ Result = 0;\r
+ Status = SafeUint64ToIntn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x5bababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (0xababababefefefef);\r
+ Status = SafeUint64ToIntn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUint64ToUintn (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINT64 Operand;\r
+ UINTN Result;\r
+\r
+ //\r
+ // If Operand is <= MAX_UINTN, then it's a cast\r
+ //\r
+ Operand = 0xabababab;\r
+ Result = 0;\r
+ Status = SafeUint64ToUintn(Operand, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0xabababab, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Operand = (0xababababefefefef);\r
+ Status = SafeUint64ToUintn(Operand, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUintnAdd (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Augend;\r
+ UINTN Addend;\r
+ UINTN Result;\r
+\r
+ //\r
+ // If the result of addition doesn't overflow MAX_UINTN, then it's addition\r
+ //\r
+ Augend = 0x3a3a3a3a;\r
+ Addend = 0x3a3a3a3a;\r
+ Result = 0;\r
+ Status = SafeUintnAdd(Augend, Addend, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x74747474, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Augend = 0xabababab;\r
+ Addend = 0xbcbcbcbc;\r
+ Status = SafeUintnAdd(Augend, Addend, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeIntnAdd (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INTN Augend;\r
+ INTN Addend;\r
+ INTN Result;\r
+\r
+ //\r
+ // If the result of addition doesn't overflow MAX_INTN\r
+ // and doesn't underflow MIN_INTN, then it's addition\r
+ //\r
+ Augend = 0x3a3a3a3a;\r
+ Addend = 0x3a3a3a3a;\r
+ Result = 0;\r
+ Status = SafeIntnAdd(Augend, Addend, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x74747474, Result);\r
+\r
+ Augend = (-976894522);\r
+ Addend = (-976894522);\r
+ Status = SafeIntnAdd(Augend, Addend, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL((-1953789044), Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Augend = 0x5a5a5a5a;\r
+ Addend = 0x5a5a5a5a;\r
+ Status = SafeIntnAdd(Augend, Addend, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ Augend = (-1515870810);\r
+ Addend = (-1515870810);\r
+ Status = SafeIntnAdd(Augend, Addend, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUintnSub (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Minuend;\r
+ UINTN Subtrahend;\r
+ UINTN Result;\r
+\r
+ //\r
+ // If Minuend >= Subtrahend, then it's subtraction\r
+ //\r
+ Minuend = 0x5a5a5a5a;\r
+ Subtrahend = 0x3b3b3b3b;\r
+ Result = 0;\r
+ Status = SafeUintnSub(Minuend, Subtrahend, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x1f1f1f1f, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Minuend = 0x5a5a5a5a;\r
+ Subtrahend = 0x6d6d6d6d;\r
+ Status = SafeUintnSub(Minuend, Subtrahend, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeIntnSub (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INTN Minuend;\r
+ INTN Subtrahend;\r
+ INTN Result;\r
+\r
+ //\r
+ // If the result of subtractions doesn't overflow MAX_INTN or\r
+ // underflow MIN_INTN, then it's subtraction\r
+ //\r
+ Minuend = 0x5a5a5a5a;\r
+ Subtrahend = 0x3a3a3a3a;\r
+ Result = 0;\r
+ Status = SafeIntnSub(Minuend, Subtrahend, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x20202020, Result);\r
+\r
+ Minuend = 0x3a3a3a3a;\r
+ Subtrahend = 0x5a5a5a5a;\r
+ Status = SafeIntnSub(Minuend, Subtrahend, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL((-538976288), Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Minuend = (-2054847098);\r
+ Subtrahend = 2054847098;\r
+ Status = SafeIntnSub(Minuend, Subtrahend, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ Minuend = (2054847098);\r
+ Subtrahend = (-2054847098);\r
+ Status = SafeIntnSub(Minuend, Subtrahend, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeUintnMult (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINTN Multiplicand;\r
+ UINTN Multiplier;\r
+ UINTN Result;\r
+\r
+ //\r
+ // If the result of multiplication doesn't overflow MAX_UINTN, it will succeed\r
+ //\r
+ Multiplicand = 0xa122a;\r
+ Multiplier = 0xd23;\r
+ Result = 0;\r
+ Status = SafeUintnMult(Multiplicand, Multiplier, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x844c9dbe, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Multiplicand = 0xa122a;\r
+ Multiplier = 0xed23;\r
+ Status = SafeUintnMult(Multiplicand, Multiplier, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r
+\r
+UNIT_TEST_STATUS\r
+EFIAPI\r
+TestSafeIntnMult (\r
+ IN UNIT_TEST_CONTEXT Context\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ INTN Multiplicand;\r
+ INTN Multiplier;\r
+ INTN Result;\r
+\r
+ //\r
+ // If the result of multiplication doesn't overflow MAX_INTN and doesn't\r
+ // underflow MIN_UINTN, it will succeed\r
+ //\r
+ Multiplicand = 0x123456;\r
+ Multiplier = 0x678;\r
+ Result = 0;\r
+ Status = SafeIntnMult(Multiplicand, Multiplier, &Result);\r
+ UT_ASSERT_NOT_EFI_ERROR(Status);\r
+ UT_ASSERT_EQUAL(0x75c28c50, Result);\r
+\r
+ //\r
+ // Otherwise should result in an error status\r
+ //\r
+ Multiplicand = 0x123456;\r
+ Multiplier = 0xabc;\r
+ Status = SafeIntnMult(Multiplicand, Multiplier, &Result);\r
+ UT_ASSERT_EQUAL(RETURN_BUFFER_TOO_SMALL, Status);\r
+\r
+ return UNIT_TEST_PASSED;\r
+}\r