From 492e41a24fd088c7ab609ee8ad518f69c9cd29e3 Mon Sep 17 00:00:00 2001
From: Al Stone <ahs3@redhat.com>
Date: Tue, 22 Sep 2020 18:12:01 -0600
Subject: [PATCH 18/45] Support GTDT in a big-endian world

Signed-off-by: Al Stone <ahs3@redhat.com>
---
 source/common/dmtbdump1.c  | 13 +++++++++----
 source/compiler/dttable1.c |  9 +++++++--
 2 files changed, 16 insertions(+), 6 deletions(-)

Index: acpica-unix2-20211217/source/common/dmtbdump1.c
===================================================================
--- acpica-unix2-20211217.orig/source/common/dmtbdump1.c
+++ acpica-unix2-20211217/source/common/dmtbdump1.c
@@ -1292,7 +1292,7 @@ AcpiDmDumpGtdt (
 {
     ACPI_STATUS             Status;
     ACPI_GTDT_HEADER        *Subtable;
-    UINT32                  Length = Table->Length;
+    UINT32                  Length = AcpiUtReadUint32 (&Table->Length);
     UINT32                  Offset = sizeof (ACPI_TABLE_GTDT);
     ACPI_DMTABLE_INFO       *InfoTable;
     UINT32                  SubtableLength;
@@ -1328,7 +1328,7 @@ AcpiDmDumpGtdt (
 
     /* Subtables */
 
-    while (Offset < Table->Length)
+    while (Offset < Length)
     {
         /* Common subtable header */
 
@@ -1346,8 +1346,13 @@ AcpiDmDumpGtdt (
         case ACPI_GTDT_TYPE_TIMER_BLOCK:
 
             SubtableLength = sizeof (ACPI_GTDT_TIMER_BLOCK);
-            GtCount = (ACPI_CAST_PTR (ACPI_GTDT_TIMER_BLOCK,
-                Subtable))->TimerCount;
+            {
+                UINT32 Tmp32;
+
+                Tmp32 = (ACPI_CAST_PTR (ACPI_GTDT_TIMER_BLOCK,
+                    Subtable))->TimerCount;
+                GtCount = AcpiUtReadUint32 (&Tmp32);
+            }
 
             InfoTable = AcpiDmTableInfoGtdt0;
             break;
Index: acpica-unix2-20211217/source/compiler/dttable1.c
===================================================================
--- acpica-unix2-20211217.orig/source/compiler/dttable1.c
+++ acpica-unix2-20211217/source/compiler/dttable1.c
@@ -1288,8 +1288,13 @@ DtCompileGtdt (
             DtPushSubtable (Subtable);
             ParentTable = DtPeekSubtable ();
 
-            GtCount = (ACPI_CAST_PTR (ACPI_GTDT_TIMER_BLOCK,
-                Subtable->Buffer - sizeof(ACPI_GTDT_HEADER)))->TimerCount;
+            {
+                UINT32 Tmp32;
+
+                Tmp32 = (ACPI_CAST_PTR (ACPI_GTDT_TIMER_BLOCK,
+                    Subtable->Buffer - sizeof (ACPI_GTDT_HEADER)))->TimerCount;
+                GtCount = AcpiUtReadUint32 (&Tmp32);
+            }
 
             while (GtCount)
             {