Re: [edk2-devel] [PATCH v1 09/19] DynamicTablesPkg: Fix unaligned pointers usage
Reviewed-by: Alexei Fedorov
Alexei
From: Sami Mujawar
Sent: 23 August 2019 11:55
To: devel@edk2.groups.io
Cc: Sami Mujawar ; Alexei Fedorov
; leif.lindh...@linaro.org ;
Matteo Carlini ; nd
Subject: [PATCH v1 09/19] DynamicTablesPkg: Fix unaligned pointers usage
The VS2017 compiler reports 'warning C4366: The result of
the unary '&' operator may be unaligned' if an address of
an unaligned structure member is passed as an argument to
a function.
Fix this warning by using local variables in place of
unaligned structure members.
Signed-off-by: Sami Mujawar
---
DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c | 24
+++-
DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h | 13
+--
2 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
index
40699ce113caa8530c89ac20562cf5abda26b88e..82070403ac8757f54e839fd00eb4acb3292fc60c
100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
@@ -1066,6 +1066,9 @@ BuildPpttTable (
EFI_STATUS Status;
UINT32 TableSize;
UINT32 ProcTopologyStructCount;
+ UINT32 ProcHierarchyNodeCount;
+ UINT32 CacheStructCount;
+ UINT32 IdStructCount;
UINT32 ProcHierarchyNodeOffset;
UINT32 CacheStructOffset;
@@ -1113,7 +1116,7 @@ BuildPpttTable (
CfgMgrProtocol,
CM_NULL_TOKEN,
,
- >ProcHierarchyNodeCount
+
);
if (EFI_ERROR (Status)) {
DEBUG ((
@@ -1124,7 +1127,8 @@ BuildPpttTable (
goto error_handler;
}
- ProcTopologyStructCount = Generator->ProcHierarchyNodeCount;
+ ProcTopologyStructCount = ProcHierarchyNodeCount;
+ Generator->ProcHierarchyNodeCount = ProcHierarchyNodeCount;
// Get the cache info and update the processor topology structure count with
// Cache Type Structures (Type 1)
@@ -1132,7 +1136,7 @@ BuildPpttTable (
CfgMgrProtocol,
CM_NULL_TOKEN,
,
- >CacheStructCount
+
);
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
DEBUG ((
@@ -1143,7 +1147,8 @@ BuildPpttTable (
goto error_handler;
}
- ProcTopologyStructCount += Generator->CacheStructCount;
+ ProcTopologyStructCount += CacheStructCount;
+ Generator->CacheStructCount = CacheStructCount;
// Get the processor hierarchy node ID info and update the processor topology
// structure count with ID Structures (Type 2)
@@ -1151,7 +1156,7 @@ BuildPpttTable (
CfgMgrProtocol,
CM_NULL_TOKEN,
,
- >IdStructCount
+
);
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
DEBUG ((
@@ -1163,7 +1168,8 @@ BuildPpttTable (
goto error_handler;
}
- ProcTopologyStructCount += Generator->IdStructCount;
+ ProcTopologyStructCount += IdStructCount;
+ Generator->IdStructCount = IdStructCount;
// Allocate Node Indexer array
NodeIndexer = (PPTT_NODE_INDEXER*)AllocateZeroPool (
@@ -1475,6 +1481,12 @@ ACPI_PPTT_GENERATOR PpttGenerator = {
// Processor topology node count
0,
+ // Count of Processor Hierarchy Nodes
+ 0,
+ // Count of Cache Structures
+ 0,
+ // Count of Id Structures
+ 0,
// Pointer to PPTT Node Indexer
NULL
};
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
index
6a0fdd08e1533c57285f42086314c70a5ed5..0a14da502d595e27d87262b1bac681318f1d9ced
100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
@@ -167,6 +167,12 @@ typedef struct AcpiPpttGenerator {
ACPI_TABLE_GENERATOR Header;
/// PPTT structure count
UINT32ProcTopologyStructCount;
+ /// Count of Processor Hierarchy Nodes
+ UINT32ProcHierarchyNodeCount;
+ /// Count of Cache Structures
+ UINT32CacheStructCount;
+ /// Count of Id Structures
+ UINT32IdStructCount;
/// List of indexed CM objects for PPTT generation
PPTT_NODE_INDEXER * NodeIndexer;
/// Pointer to the start of Processor Hierarchy nodes in
@@ -176,13 +182,6 @@ typedef struct AcpiPpttGenerator {
PPTT_NODE_INDEXER * CacheStructIndexedList;
/// Pointer to the start of Id Structures in the Node Indexer array
PPTT_NODE_INDEXER * IdStructIndexedList;
- /// Count of Processor Hierarchy Nodes
- UINT32ProcHierarchyNodeCount;
- /// Count of Cache
[edk2-devel] [PATCH v1 09/19] DynamicTablesPkg: Fix unaligned pointers usage
The VS2017 compiler reports 'warning C4366: The result of
the unary '&' operator may be unaligned' if an address of
an unaligned structure member is passed as an argument to
a function.
Fix this warning by using local variables in place of
unaligned structure members.
Signed-off-by: Sami Mujawar
---
DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c | 24
+++-
DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h | 13
+--
2 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
index
40699ce113caa8530c89ac20562cf5abda26b88e..82070403ac8757f54e839fd00eb4acb3292fc60c
100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.c
@@ -1066,6 +1066,9 @@ BuildPpttTable (
EFI_STATUS Status;
UINT32 TableSize;
UINT32 ProcTopologyStructCount;
+ UINT32 ProcHierarchyNodeCount;
+ UINT32 CacheStructCount;
+ UINT32 IdStructCount;
UINT32 ProcHierarchyNodeOffset;
UINT32 CacheStructOffset;
@@ -1113,7 +1116,7 @@ BuildPpttTable (
CfgMgrProtocol,
CM_NULL_TOKEN,
,
- >ProcHierarchyNodeCount
+
);
if (EFI_ERROR (Status)) {
DEBUG ((
@@ -1124,7 +1127,8 @@ BuildPpttTable (
goto error_handler;
}
- ProcTopologyStructCount = Generator->ProcHierarchyNodeCount;
+ ProcTopologyStructCount = ProcHierarchyNodeCount;
+ Generator->ProcHierarchyNodeCount = ProcHierarchyNodeCount;
// Get the cache info and update the processor topology structure count with
// Cache Type Structures (Type 1)
@@ -1132,7 +1136,7 @@ BuildPpttTable (
CfgMgrProtocol,
CM_NULL_TOKEN,
,
- >CacheStructCount
+
);
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
DEBUG ((
@@ -1143,7 +1147,8 @@ BuildPpttTable (
goto error_handler;
}
- ProcTopologyStructCount += Generator->CacheStructCount;
+ ProcTopologyStructCount += CacheStructCount;
+ Generator->CacheStructCount = CacheStructCount;
// Get the processor hierarchy node ID info and update the processor topology
// structure count with ID Structures (Type 2)
@@ -1151,7 +1156,7 @@ BuildPpttTable (
CfgMgrProtocol,
CM_NULL_TOKEN,
,
- >IdStructCount
+
);
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
DEBUG ((
@@ -1163,7 +1168,8 @@ BuildPpttTable (
goto error_handler;
}
- ProcTopologyStructCount += Generator->IdStructCount;
+ ProcTopologyStructCount += IdStructCount;
+ Generator->IdStructCount = IdStructCount;
// Allocate Node Indexer array
NodeIndexer = (PPTT_NODE_INDEXER*)AllocateZeroPool (
@@ -1475,6 +1481,12 @@ ACPI_PPTT_GENERATOR PpttGenerator = {
// Processor topology node count
0,
+ // Count of Processor Hierarchy Nodes
+ 0,
+ // Count of Cache Structures
+ 0,
+ // Count of Id Structures
+ 0,
// Pointer to PPTT Node Indexer
NULL
};
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
index
6a0fdd08e1533c57285f42086314c70a5ed5..0a14da502d595e27d87262b1bac681318f1d9ced
100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiPpttLibArm/PpttGenerator.h
@@ -167,6 +167,12 @@ typedef struct AcpiPpttGenerator {
ACPI_TABLE_GENERATOR Header;
/// PPTT structure count
UINT32ProcTopologyStructCount;
+ /// Count of Processor Hierarchy Nodes
+ UINT32ProcHierarchyNodeCount;
+ /// Count of Cache Structures
+ UINT32CacheStructCount;
+ /// Count of Id Structures
+ UINT32IdStructCount;
/// List of indexed CM objects for PPTT generation
PPTT_NODE_INDEXER * NodeIndexer;
/// Pointer to the start of Processor Hierarchy nodes in
@@ -176,13 +182,6 @@ typedef struct AcpiPpttGenerator {
PPTT_NODE_INDEXER * CacheStructIndexedList;
/// Pointer to the start of Id Structures in the Node Indexer array
PPTT_NODE_INDEXER * IdStructIndexedList;
- /// Count of Processor Hierarchy Nodes
- UINT32ProcHierarchyNodeCount;
- /// Count of Cache Structures
- UINT32CacheStructCount;
- /// Count of Id Structures
- UINT32IdStructCount;
-
} ACPI_PPTT_GENERATOR;
#pragma pack()
--
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this
