ALIGNOF: Determining the alignment requirement of data types is
crucial to ensure safe memory accesses when parsing untrusted data.
IS_POW2: Determining whether a value is a power of two is important
to verify whether untrusted values are valid alignment values.
IS_ALIGNED: In combination with ALIGNOF data offsets can be verified.
A more general version of IS_ALIGNED defined by several modules.
ADDRESS_IS_ALIGNED: Variant of IS_ALIGNED for pointers and addresses.
Replaces module-specific definitions throughout the codebase.
ALIGN_VALUE_ADDEND: The added to align up can be used to directly
determine the required offset for data alignment.
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang....@intel.com>
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Hao A Wu <hao.a...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Vitaly Cheptsov <vit9...@protonmail.com>
Signed-off-by: Marvin Häuser <mhaeu...@posteo.de>
---
MdeModulePkg/Bus/Ata/AhciPei/AhciMode.c | 2 +-
MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c | 6 +-
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c | 12 +--
MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c | 2 +-
MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c | 4 +-
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c | 6 +-
MdeModulePkg/Universal/EbcDxe/EbcExecute.c | 36 ++++----
MdeModulePkg/Bus/Ata/AhciPei/AhciPei.h | 1 -
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.h | 2 -
MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.h | 1 -
MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h | 4 +-
MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsBlockIoPei.h | 2 -
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.h | 2 -
MdeModulePkg/Universal/EbcDxe/EbcExecute.h | 3 +-
MdePkg/Include/Base.h | 90
+++++++++++++++++++-
15 files changed, 125 insertions(+), 48 deletions(-)
diff --git a/MdeModulePkg/Bus/Ata/AhciPei/AhciMode.c
b/MdeModulePkg/Bus/Ata/AhciPei/AhciMode.c
index 7636ad27c86c..520197aee752 100644
--- a/MdeModulePkg/Bus/Ata/AhciPei/AhciMode.c
+++ b/MdeModulePkg/Bus/Ata/AhciPei/AhciMode.c
@@ -2099,7 +2099,7 @@ TrustTransferAtaDevice (
// ATA PassThru PPI.
//
if ((AtaPassThru->Mode->IoAlign > 1) &&
- !IS_ALIGNED (Buffer, AtaPassThru->Mode->IoAlign)) {
+ !ADDRESS_IS_ALIGNED (Buffer, AtaPassThru->Mode->IoAlign)) {
NewBuffer = AllocateAlignedPages (
EFI_SIZE_TO_PAGES (TransferLength),
AtaPassThru->Mode->IoAlign
diff --git a/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c
b/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c
index 191b78c88541..057ad42d596b 100644
--- a/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c
+++ b/MdeModulePkg/Bus/Ata/AhciPei/AhciPeiPassThru.c
@@ -193,15 +193,15 @@ AhciAtaPassThruPassThru (
}
IoAlign = This->Mode->IoAlign;
- if ((IoAlign > 1) && !IS_ALIGNED (Packet->InDataBuffer, IoAlign)) {
+ if ((IoAlign > 1) && !ADDRESS_IS_ALIGNED (Packet->InDataBuffer, IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((IoAlign > 1) && !IS_ALIGNED (Packet->OutDataBuffer, IoAlign)) {
+ if ((IoAlign > 1) && !ADDRESS_IS_ALIGNED (Packet->OutDataBuffer, IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((IoAlign > 1) && !IS_ALIGNED (Packet->Asb, IoAlign)) {
+ if ((IoAlign > 1) && !ADDRESS_IS_ALIGNED (Packet->Asb, IoAlign)) {
return EFI_INVALID_PARAMETER;
}
diff --git a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
index 86fe9d954fdb..c7b3cfce1340 100644
--- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
+++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
@@ -1281,15 +1281,15 @@ AtaPassThruPassThru (
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->InDataBuffer,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->OutDataBuffer,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->Asb,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->Asb,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
@@ -2012,15 +2012,15 @@ ExtScsiPassThruPassThru (
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->InDataBuffer,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->OutDataBuffer,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->SenseData,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->SenseData,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
diff --git a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c
b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c
index 79026a4a957d..eabab8ac5bc5 100644
--- a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c
+++ b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaPassThruExecute.c
@@ -1036,7 +1036,7 @@ TrustTransferAtaDevice (
// Check the alignment of the incoming buffer prior to invoking underlying
ATA PassThru
//
AtaPassThru = AtaDevice->AtaBusDriverData->AtaPassThru;
- if ((AtaPassThru->Mode->IoAlign > 1) && !IS_ALIGNED (Buffer,
AtaPassThru->Mode->IoAlign)) {
+ if ((AtaPassThru->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED (Buffer,
AtaPassThru->Mode->IoAlign)) {
NewBuffer = AllocateAlignedBuffer (AtaDevice, TransferLength);
if (NewBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
diff --git a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
index c80e78fa8a6b..81db2efd0599 100644
--- a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
+++ b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
@@ -1956,7 +1956,7 @@ ScsiDiskReceiveData (
goto Done;
}
- if ((ScsiDiskDevice->ScsiIo->IoAlign > 1) && !IS_ALIGNED (PayloadBuffer,
ScsiDiskDevice->ScsiIo->IoAlign)) {
+ if ((ScsiDiskDevice->ScsiIo->IoAlign > 1) && !ADDRESS_IS_ALIGNED
(PayloadBuffer, ScsiDiskDevice->ScsiIo->IoAlign)) {
AlignedBuffer = AllocateAlignedBuffer (ScsiDiskDevice,
PayloadBufferSize);
if (AlignedBuffer == NULL) {
Status = EFI_OUT_OF_RESOURCES;
@@ -2171,7 +2171,7 @@ ScsiDiskSendData (
goto Done;
}
- if ((ScsiDiskDevice->ScsiIo->IoAlign > 1) && !IS_ALIGNED (PayloadBuffer,
ScsiDiskDevice->ScsiIo->IoAlign)) {
+ if ((ScsiDiskDevice->ScsiIo->IoAlign > 1) && !ADDRESS_IS_ALIGNED
(PayloadBuffer, ScsiDiskDevice->ScsiIo->IoAlign)) {
AlignedBuffer = AllocateAlignedBuffer (ScsiDiskDevice,
PayloadBufferSize);
if (AlignedBuffer == NULL) {
Status = EFI_OUT_OF_RESOURCES;
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
index 92ff958f161e..c4d01a20fcbe 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
@@ -170,15 +170,15 @@ UfsPassThruPassThru (
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->InDataBuffer,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->OutDataBuffer,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
- if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->SenseData,
This->Mode->IoAlign)) {
+ if ((This->Mode->IoAlign > 1) && !ADDRESS_IS_ALIGNED(Packet->SenseData,
This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
diff --git a/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
b/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
index 1c4a4f5155c9..ba66f441bcea 100644
--- a/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
+++ b/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
@@ -2004,7 +2004,7 @@ ExecuteJMP (
// check for alignment, and jump absolute.
//
Data64 = (UINT64) VmReadImmed64 (VmPtr, 2);
- if (!IS_ALIGNED ((UINTN) Data64, sizeof (UINT16))) {
+ if (!ADDRESS_IS_ALIGNED ((UINTN) Data64, sizeof (UINT16))) {
EbcDebugSignalException (
EXCEPT_EBC_ALIGNMENT_CHECK,
EXCEPTION_FLAG_FATAL,
@@ -2059,7 +2059,7 @@ ExecuteJMP (
// Form: JMP32 @Rx {Index32}
//
Addr = VmReadMemN (VmPtr, (UINTN) Data64 + Index32);
- if (!IS_ALIGNED ((UINTN) Addr, sizeof (UINT16))) {
+ if (!ADDRESS_IS_ALIGNED ((UINTN) Addr, sizeof (UINT16))) {
EbcDebugSignalException (
EXCEPT_EBC_ALIGNMENT_CHECK,
EXCEPTION_FLAG_FATAL,
@@ -2082,7 +2082,7 @@ ExecuteJMP (
// Form: JMP32 Rx {Immed32}
//
Addr = (UINTN) (Data64 + Index32);
- if (!IS_ALIGNED ((UINTN) Addr, sizeof (UINT16))) {
+ if (!ADDRESS_IS_ALIGNED ((UINTN) Addr, sizeof (UINT16))) {
EbcDebugSignalException (
EXCEPT_EBC_ALIGNMENT_CHECK,
EXCEPTION_FLAG_FATAL,
@@ -3128,7 +3128,7 @@ ExecuteRET (
// Pull the return address off the VM app's stack and set the IP
// to it
//
- if (!IS_ALIGNED ((UINTN) VmPtr->Gpr[0], sizeof (UINT16))) {
+ if (!ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Gpr[0], sizeof (UINT16))) {
EbcDebugSignalException (
EXCEPT_EBC_ALIGNMENT_CHECK,
EXCEPTION_FLAG_FATAL,
@@ -4693,7 +4693,7 @@ VmWriteMem16 (
//
// Do a simple write if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINT16))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINT16))) {
*(UINT16 *) Addr = Data;
} else {
//
@@ -4756,7 +4756,7 @@ VmWriteMem32 (
//
// Do a simple write if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINT32))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINT32))) {
*(UINT32 *) Addr = Data;
} else {
//
@@ -4819,7 +4819,7 @@ VmWriteMem64 (
//
// Do a simple write if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINT64))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINT64))) {
*(UINT64 *) Addr = Data;
} else {
//
@@ -4885,7 +4885,7 @@ VmWriteMemN (
//
// Do a simple write if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINTN))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINTN))) {
*(UINTN *) Addr = Data;
} else {
for (Index = 0; Index < sizeof (UINTN) / sizeof (UINT32); Index++) {
@@ -4949,7 +4949,7 @@ VmReadImmed16 (
//
// Read direct if aligned
//
- if (IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (INT16))) {
+ if (ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (INT16))) {
return * (INT16 *) (VmPtr->Ip + Offset);
} else {
//
@@ -4993,7 +4993,7 @@ VmReadImmed32 (
//
// Read direct if aligned
//
- if (IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT32))) {
+ if (ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT32))) {
return * (INT32 *) (VmPtr->Ip + Offset);
}
//
@@ -5032,7 +5032,7 @@ VmReadImmed64 (
//
// Read direct if aligned
//
- if (IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT64))) {
+ if (ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT64))) {
return * (UINT64 *) (VmPtr->Ip + Offset);
}
//
@@ -5069,7 +5069,7 @@ VmReadCode16 (
//
// Read direct if aligned
//
- if (IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT16))) {
+ if (ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT16))) {
return * (UINT16 *) (VmPtr->Ip + Offset);
} else {
//
@@ -5110,7 +5110,7 @@ VmReadCode32 (
//
// Read direct if aligned
//
- if (IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT32))) {
+ if (ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT32))) {
return * (UINT32 *) (VmPtr->Ip + Offset);
}
//
@@ -5147,7 +5147,7 @@ VmReadCode64 (
//
// Read direct if aligned
//
- if (IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT64))) {
+ if (ADDRESS_IS_ALIGNED ((UINTN) VmPtr->Ip + Offset, sizeof (UINT64))) {
return * (UINT64 *) (VmPtr->Ip + Offset);
}
//
@@ -5210,7 +5210,7 @@ VmReadMem16 (
//
// Read direct if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINT16))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINT16))) {
return * (UINT16 *) Addr;
}
//
@@ -5243,7 +5243,7 @@ VmReadMem32 (
//
// Read direct if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINT32))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINT32))) {
return * (UINT32 *) Addr;
}
//
@@ -5280,7 +5280,7 @@ VmReadMem64 (
//
// Read direct if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINT64))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINT64))) {
return * (UINT64 *) Addr;
}
//
@@ -5349,7 +5349,7 @@ VmReadMemN (
//
// Read direct if aligned
//
- if (IS_ALIGNED (Addr, sizeof (UINTN))) {
+ if (ADDRESS_IS_ALIGNED (Addr, sizeof (UINTN))) {
return * (UINTN *) Addr;
}
//
diff --git a/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.h
b/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.h
index 2be78076bee7..59bb9e5d0bca 100644
--- a/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.h
+++ b/MdeModulePkg/Bus/Ata/AhciPei/AhciPei.h
@@ -145,7 +145,6 @@ typedef union {
#define AHCI_PORT_SERR 0x0030
#define AHCI_PORT_CI 0x0038
-#define IS_ALIGNED(addr, size) (((UINTN) (addr) & (size - 1))
== 0)
#define TIMER_PERIOD_SECONDS(Seconds) MultU64x32((UINT64)(Seconds),
10000000)
#pragma pack(1)
diff --git a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.h
b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.h
index 5f582b9b3e76..99bbf7d14a17 100644
--- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.h
+++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.h
@@ -147,8 +147,6 @@ struct _ATA_NONBLOCK_TASK {
#define ATA_ATAPI_TIMEOUT EFI_TIMER_PERIOD_SECONDS(3)
#define ATA_SPINUP_TIMEOUT EFI_TIMER_PERIOD_SECONDS(10)
-#define IS_ALIGNED(addr, size) (((UINTN) (addr) & (size - 1)) == 0)
-
#define ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS(a) \
CR (a, \
ATA_ATAPI_PASS_THRU_INSTANCE, \
diff --git a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.h
b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.h
index a5a865209942..172d2d61ea6c 100644
--- a/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.h
+++ b/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.h
@@ -76,7 +76,6 @@
#define ATA_TASK_SIGNATURE SIGNATURE_32 ('A', 'T', 'S', 'K')
#define ATA_DEVICE_SIGNATURE SIGNATURE_32 ('A', 'B', 'I', 'D')
#define ATA_SUB_TASK_SIGNATURE SIGNATURE_32 ('A', 'S', 'T', 'S')
-#define IS_ALIGNED(addr, size) (((UINTN) (addr) & (size - 1)) == 0)
//
// ATA bus data structure for ATA controller
diff --git a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
index ed9bbd6f8ba8..86ad27b3292f 100644
--- a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
+++ b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
@@ -37,9 +37,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <IndustryStandard/Scsi.h>
#include <IndustryStandard/Atapi.h>
-#define IS_DEVICE_FIXED(a) (a)->FixedDevice ? 1 : 0
-
-#define IS_ALIGNED(addr, size) (((UINTN) (addr) & (size - 1)) == 0)
+#define IS_DEVICE_FIXED(a) (a)->FixedDevice ? 1 : 0
#define UFS_WLUN_RPMB 0xC4
diff --git a/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsBlockIoPei.h
b/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsBlockIoPei.h
index 6e2305aa2bc2..7306106a4454 100644
--- a/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsBlockIoPei.h
+++ b/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsBlockIoPei.h
@@ -133,8 +133,6 @@ typedef struct _UFS_PEIM_HC_PRIVATE_DATA {
#define ROUNDUP8(x) (((x) % 8 == 0) ? (x) : ((x) / 8 + 1) * 8)
-#define IS_ALIGNED(addr, size) (((UINTN) (addr) & (size - 1)) == 0)
-
#define GET_UFS_PEIM_HC_PRIVATE_DATA_FROM_THIS(a) CR (a,
UFS_PEIM_HC_PRIVATE_DATA, BlkIoPpi, UFS_PEIM_HC_SIG)
#define GET_UFS_PEIM_HC_PRIVATE_DATA_FROM_THIS2(a) CR (a,
UFS_PEIM_HC_PRIVATE_DATA, BlkIo2Ppi, UFS_PEIM_HC_SIG)
#define GET_UFS_PEIM_HC_PRIVATE_DATA_FROM_THIS_NOTIFY(a) CR (a,
UFS_PEIM_HC_PRIVATE_DATA, EndOfPeiNotifyList, UFS_PEIM_HC_SIG)
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.h
b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.h
index 79b86f7e6b3d..11b5b197b67a 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.h
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.h
@@ -105,8 +105,6 @@ typedef struct {
#define ROUNDUP8(x) (((x) % 8 == 0) ? (x) : ((x) / 8 + 1) * 8)
-#define IS_ALIGNED(addr, size) (((UINTN) (addr) & (size - 1)) == 0)
-
#define UFS_PASS_THRU_PRIVATE_DATA_FROM_THIS(a) \
CR (a, \
UFS_PASS_THRU_PRIVATE_DATA, \
diff --git a/MdeModulePkg/Universal/EbcDxe/EbcExecute.h
b/MdeModulePkg/Universal/EbcDxe/EbcExecute.h
index 1cb68bc5385a..858ca7fc86ae 100644
--- a/MdeModulePkg/Universal/EbcDxe/EbcExecute.h
+++ b/MdeModulePkg/Universal/EbcDxe/EbcExecute.h
@@ -14,8 +14,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
//
// Macros to check and set alignment
//
-#define ASSERT_ALIGNED(addr, size) ASSERT (!((UINT32) (addr) & (size - 1)))
-#define IS_ALIGNED(addr, size) !((UINT32) (addr) & (size - 1))
+#define ASSERT_ALIGNED(addr, size) ASSERT (IS_ALIGNED (addr, size))
//
// Debug macro
diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index 2da08b0c787f..32d0e512e05f 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -789,6 +789,35 @@ typedef UINTN *BASE_LIST;
#define OFFSET_OF(TYPE, Field) ((UINTN) &(((TYPE *)0)->Field))
#endif
+/**
+ Returns the alignment requirement of a type.
+
+ @param TYPE The name of the type to retrieve the alignment requirement of.
+
+ @return Alignment requirement, in Bytes, of TYPE.
+**/
+#if defined(__GNUC__) || defined(__clang__) || (defined(_MSC_VER) && _MSC_VER
>= 1900)
+ //
+ // All supported versions of GCC and Clang, as well as MSVC 2015 and later,
+ // support the standard operator _Alignof.
+ //
+ #define ALIGNOF(TYPE) _Alignof (TYPE)
+#elif defined(_MSC_VER)
+ //
+ // Earlier versions of MSVC, at least MSVC 2008 and later, support the
+ // vendor-extension __alignof.
+ //
+ #define ALIGNOF(TYPE) __alignof (TYPE)
+#else
+ //
+ // For compilers that do not support inbuilt alignof operators, use
OFFSET_OF.
+ // CHAR8 is known to have both a size and an alignment requirement of 1 Byte.
+ // As such, A must be located exactly at the offset equal to its alignment
+ // requirement.
+ //
+ #define ALIGNOF(TYPE) OFFSET_OF (struct { CHAR8 C; TYPE A; }, A)
+#endif
+
/**
Portable definition for compile time assertions.
Equivalent to C11 static_assert macro from assert.h.
@@ -824,6 +853,21 @@ STATIC_ASSERT (sizeof (CHAR16) == 2, "sizeof (CHAR16)
does not meet UEFI Specif
STATIC_ASSERT (sizeof (L'A') == 2, "sizeof (L'A') does not meet UEFI
Specification Data Type requirements");
STATIC_ASSERT (sizeof (L"A") == 4, "sizeof (L\"A\") does not meet UEFI
Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (BOOLEAN) == sizeof (BOOLEAN), "Alignment of BOOLEAN
does not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (INT8) == sizeof (INT8), "Alignment of INT8 does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (UINT8) == sizeof (UINT8), "Alignment of INT16 does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (INT16) == sizeof (INT16), "Alignment of INT16 does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (UINT16) == sizeof (UINT16), "Alignment of UINT16
does not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (INT32) == sizeof (INT32), "Alignment of INT32 does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (UINT32) == sizeof (UINT32), "Alignment of UINT32
does not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (INT64) == sizeof (INT64), "Alignment of INT64 does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (UINT64) == sizeof (UINT64), "Alignment of UINT64
does not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (CHAR8) == sizeof (CHAR8), "Alignment of CHAR8 does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (CHAR16) == sizeof (CHAR16), "Alignment of CHAR16
does not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (INTN) == sizeof (INTN), "Alignment of INTN does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (UINTN) == sizeof (UINTN), "Alignment of UINTN does
not meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (VOID *) == sizeof (VOID *), "Alignment of VOID *
does not meet UEFI Specification Data Type requirements");
+
//
// The following three enum types are used to verify that the compiler
// configuration for enum types is compliant with Section 2.3.1 of the
@@ -847,6 +891,10 @@ STATIC_ASSERT (sizeof (__VERIFY_UINT8_ENUM_SIZE) == 4,
"Size of enum does not me
STATIC_ASSERT (sizeof (__VERIFY_UINT16_ENUM_SIZE) == 4, "Size of enum does not
meet UEFI Specification Data Type requirements");
STATIC_ASSERT (sizeof (__VERIFY_UINT32_ENUM_SIZE) == 4, "Size of enum does not
meet UEFI Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (__VERIFY_UINT8_ENUM_SIZE) == sizeof
(__VERIFY_UINT8_ENUM_SIZE), "Alignment of enum does not meet UEFI
Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (__VERIFY_UINT16_ENUM_SIZE) == sizeof
(__VERIFY_UINT16_ENUM_SIZE), "Alignment of enum does not meet UEFI
Specification Data Type requirements");
+STATIC_ASSERT (ALIGNOF (__VERIFY_UINT32_ENUM_SIZE) == sizeof
(__VERIFY_UINT32_ENUM_SIZE), "Alignment of enum does not meet UEFI
Specification Data Type requirements");
+
/**
Macro that returns a pointer to the data structure that contains a specified
field of
that data structure. This is a lightweight method to hide information by
placing a
@@ -868,6 +916,46 @@ STATIC_ASSERT (sizeof (__VERIFY_UINT32_ENUM_SIZE) == 4,
"Size of enum does not m
**/
#define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) -
OFFSET_OF (TYPE, Field)))
+/**
+ Checks whether a value is a power of two.
+
+ @param Value The value to check.
+
+ @return Whether Value is a power of two.
+**/
+#define IS_POW2(Value) ((Value) != 0U && ((Value) & ((Value) - 1U)) == 0U)
+
+/**
+ Checks whether a value is aligned by a specified alignment.
+
+ @param Value The value to check.
+ @param Alignment The alignment boundary used to check against.
+
+ @return Whether Value is aligned by Alignment.
+**/
+#define IS_ALIGNED(Value, Alignment) (((Value) & ((Alignment) - 1U)) == 0U)
+
+/**
+ Checks whether a pointer or address is aligned by a specified alignment.
+
+ @param Address The pointer or address to check.
+ @param Alignment The alignment boundary used to check against.
+
+ @return Whether Address is aligned by Alignment.
+**/
+#define ADDRESS_IS_ALIGNED(Address, Alignment) IS_ALIGNED ((UINTN) (Address),
Alignment)
+
+/**
+ Determines the addend to add to a value to round it up to the next boundary
of
+ a specified alignment.
+
+ @param Value The value to round up.
+ @param Alignment The alignment boundary used to return the addend.
+
+ @return Addend to round Value up to alignment boundary Alignment.
+**/
+#define ALIGN_VALUE_ADDEND(Value, Alignment) (((Alignment) - (Value)) &
((Alignment) - 1U))
+
/**
Rounds a value up to the next boundary using a specified alignment.
@@ -880,7 +968,7 @@ STATIC_ASSERT (sizeof (__VERIFY_UINT32_ENUM_SIZE) == 4,
"Size of enum does not m
@return A value up to the next boundary.
**/
-#define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) &
((Alignment) - 1)))
+#define ALIGN_VALUE(Value, Alignment) ((Value) + ALIGN_VALUE_ADDEND (Value,
Alignment))
/**
Adjust a pointer by adding the minimum offset required for it to be aligned
on
--
2.31.1
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