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