acpica-tools/unaligned.patch

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Patch carried over from the prior iasl package and updated. This allows
for builds on systems requiring aligned memory access. Please see
http://lists.acpica.org/pipermail/devel/2010-July/000159.html. Resolves
BZ#865013 and BZ#856856.
--
Add more platforms to the list of the ones requiring aligned memory access.
Also fix callsites where wrong assumptions where made in terms of aligment.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
source/components/executer/exoparg2.c | 12 +++++++++---
source/include/actypes.h | 26 +++++++++++++-------------
3 files changed, 32 insertions(+), 21 deletions(-)
Index: acpica-unix2-20200925/source/components/executer/exoparg2.c
===================================================================
--- acpica-unix2-20200925.orig/source/components/executer/exoparg2.c
+++ acpica-unix2-20200925/source/components/executer/exoparg2.c
@@ -172,6 +172,8 @@ AcpiExOpcode_2A_2T_1R (
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc1 = NULL;
ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL;
+ UINT64 ReturnValue1 = 0;
+ UINT64 ReturnValue2 = 0;
ACPI_STATUS Status;
@@ -206,8 +208,10 @@ AcpiExOpcode_2A_2T_1R (
Status = AcpiUtDivide (
Operand[0]->Integer.Value,
Operand[1]->Integer.Value,
- &ReturnDesc1->Integer.Value,
- &ReturnDesc2->Integer.Value);
+ &ReturnValue1, &ReturnValue2);
+ ReturnDesc1->Integer.Value = ReturnValue1;
+ ReturnDesc2->Integer.Value = ReturnValue2;
+
if (ACPI_FAILURE (Status))
{
goto Cleanup;
@@ -282,6 +286,7 @@ AcpiExOpcode_2A_1T_1R (
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
UINT64 Index;
+ UINT64 ReturnValue = 0;
ACPI_STATUS Status = AE_OK;
ACPI_SIZE Length = 0;
@@ -327,7 +332,8 @@ AcpiExOpcode_2A_1T_1R (
Operand[0]->Integer.Value,
Operand[1]->Integer.Value,
NULL,
- &ReturnDesc->Integer.Value);
+ &ReturnValue);
+ ReturnDesc->Integer.Value = ReturnValue;
break;
case AML_CONCATENATE_OP: /* Concatenate (Data1, Data2, Result) */
Index: acpica-unix2-20200925/source/include/actypes.h
===================================================================
--- acpica-unix2-20200925.orig/source/include/actypes.h
+++ acpica-unix2-20200925/source/include/actypes.h
@@ -143,6 +143,19 @@ typedef COMPILER_DEPENDENT_INT64
*/
#define ACPI_THREAD_ID UINT64
+/*
+ * In the case of the Itanium Processor Family (IPF), the hardware does not
+ * support misaligned memory transfers. Set the MISALIGNMENT_NOT_SUPPORTED flag
+ * to indicate that special precautions must be taken to avoid alignment faults.
+ * (IA64 or ia64 is currently used by existing compilers to indicate IPF.)
+ *
+ * Note: EM64T and other X86-64 processors support misaligned transfers,
+ * so there is no need to define this flag.
+ */
+#if defined (__IA64__) || defined (__ia64__) || defined(__alpha__) || defined(__sparc__) || defined(__hppa__) || defined(__arm__)
+#define ACPI_MISALIGNMENT_NOT_SUPPORTED
+#endif
+
/*******************************************************************************
*
@@ -170,20 +183,6 @@ typedef UINT64
#define ACPI_USE_NATIVE_DIVIDE /* Has native 64-bit integer support */
#define ACPI_USE_NATIVE_MATH64 /* Has native 64-bit integer support */
-/*
- * In the case of the Itanium Processor Family (IPF), the hardware does not
- * support misaligned memory transfers. Set the MISALIGNMENT_NOT_SUPPORTED
- * flag to indicate that special precautions must be taken to avoid alignment
- * faults. (IA64 or ia64 is currently used by existing compilers to indicate
- * IPF.)
- *
- * Note: EM64T and other X86-64 processors support misaligned transfers,
- * so there is no need to define this flag.
- */
-#if defined (__IA64__) || defined (__ia64__)
-#define ACPI_MISALIGNMENT_NOT_SUPPORTED
-#endif
-
/*******************************************************************************
*