acpica-unix: backport pending patches to fix gcc12 build issue

Due to the compiler change of openwrt, from gcc version 11 to gcc
version 12, we have now the following build errors.

../../../source/components/utilities/utdebug.c: In function
'AcpiUtInitStackPtrTrace':
../../../source/components/utilities/utdebug.c:188:31: error: storing
the address of local variable 'CurrentSp' in 'AcpiGbl_EntryStackPointer'
[-Werror=dangling-pointer=]
  188 |     AcpiGbl_EntryStackPointer = &CurrentSp;
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
../../../source/components/utilities/utdebug.c:185:29: note: 'CurrentSp'
declared here
  185 |     ACPI_SIZE               CurrentSp;
      |                             ^~~~~~~~~
In file included from ../../../source/include/acpi.h:173,
                 from
../../../source/components/utilities/utdebug.c:154:
../../../source/include/acglobal.h:335:41: note:
'AcpiGbl_EntryStackPointer' declared here
  335 | ACPI_GLOBAL (ACPI_SIZE *,
      AcpiGbl_EntryStackPointer);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~
../../../source/include/acpixf.h:188:17: note: in definition of macro
'ACPI_GLOBAL'
  188 |     extern type name
      |                 ^~~~
cc1: all warnings being treated as errors
make[4]: *** [../Makefile.rules:20: obj/utdebug.o] Error 1

This is already issue opend in the the upstream project acpica.
https://github.com/acpica/acpica/issues/771

There is already a fix available, but it has not yet been merged.
https://github.com/acpica/acpica/pull/776

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

4 files changed, 145 insertions, 1 deletions

diff --git a/utils/acpica-unix/Makefile b/utils/acpica-unix/Makefile
index 5d508e466..10e5a4c1d 100644
--- a/utils/acpica-unix/Makefile
+++ b/utils/acpica-unix/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=acpica-unix
 PKG_VERSION:=20221020
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar_0.gz
 PKG_CAT:=gzip -dc
diff --git a/utils/acpica-unix/patches/0001-ACPI_CAST_PTR-cast-through-void.patch b/utils/acpica-unix/patches/0001-ACPI_CAST_PTR-cast-through-void.patch
new file mode 100644
index 000000000..71510df53
--- /dev/null
+++ b/utils/acpica-unix/patches/0001-ACPI_CAST_PTR-cast-through-void.patch
@@ -0,0 +1,22 @@
+From 0f814783ef9ed3a50e15cab08579218ec45b4640 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <thomas@t-8ch.de>
+Date: Sat, 21 May 2022 12:15:16 +0200
+Subject: [PATCH 1/3] ACPI_CAST_PTR: cast through "void *"
+
+Not all pointer are castable to integers directly and ACPI_UINTPTR_T is
+not guaranteed to be "void *".
+---
+ source/include/actypes.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/source/include/actypes.h
++++ b/source/include/actypes.h
+@@ -649,7 +649,7 @@ typedef UINT64
+ 
+ /* Pointer manipulation */
+ 
+-#define ACPI_CAST_PTR(t, p)             ((t *) (ACPI_UINTPTR_T) (p))
++#define ACPI_CAST_PTR(t, p)             ((t *) (ACPI_UINTPTR_T) (void *) (p))
+ #define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **) (ACPI_UINTPTR_T) (p))
+ #define ACPI_ADD_PTR(t, a, b)           ACPI_CAST_PTR (t, (ACPI_CAST_PTR (UINT8, (a)) + (ACPI_SIZE)(b)))
+ #define ACPI_SUB_PTR(t, a, b)           ACPI_CAST_PTR (t, (ACPI_CAST_PTR (UINT8, (a)) - (ACPI_SIZE)(b)))
diff --git a/utils/acpica-unix/patches/0002-Linux-non-kernel-Use-use-uintptr_t-for-ACPI_UINTPTR_.patch b/utils/acpica-unix/patches/0002-Linux-non-kernel-Use-use-uintptr_t-for-ACPI_UINTPTR_.patch
new file mode 100644
index 000000000..92fb3cdb6
--- /dev/null
+++ b/utils/acpica-unix/patches/0002-Linux-non-kernel-Use-use-uintptr_t-for-ACPI_UINTPTR_.patch
@@ -0,0 +1,37 @@
+From 6b7a78c41c04772a30923c8c0ba71770d55ac815 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <thomas@t-8ch.de>
+Date: Sat, 21 May 2022 12:17:14 +0200
+Subject: [PATCH 2/3] Linux non-kernel: Use use uintptr_t for ACPI_UINTPTR_T
+
+---
+ source/include/platform/aclinux.h | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/source/include/platform/aclinux.h
++++ b/source/include/platform/aclinux.h
+@@ -168,6 +168,8 @@
+ #define ACPI_USE_DO_WHILE_0
+ #define ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS
+ 
++#define ACPI_UINTPTR_T uintptr_t
++
+ 
+ #ifdef __KERNEL__
+ 
+@@ -252,8 +254,6 @@
+ #define ACPI_SPINLOCK               spinlock_t *
+ #define ACPI_CPU_FLAGS              unsigned long
+ 
+-#define ACPI_UINTPTR_T              uintptr_t
+-
+ #define ACPI_TO_INTEGER(p)          ((uintptr_t)(p))
+ #define ACPI_OFFSET(d, f)           offsetof(d, f)
+ 
+@@ -311,6 +311,7 @@
+ 
+ #ifdef ACPI_USE_STANDARD_HEADERS
+ #include <unistd.h>
++#include <stdint.h>
+ #endif
+ 
+ /* Define/disable kernel-specific declarators */
diff --git a/utils/acpica-unix/patches/0003-debug-use-UINT_PTR_T-to-store-stack-boundaries.patch b/utils/acpica-unix/patches/0003-debug-use-UINT_PTR_T-to-store-stack-boundaries.patch
new file mode 100644
index 000000000..b0c1bef6e
--- /dev/null
+++ b/utils/acpica-unix/patches/0003-debug-use-UINT_PTR_T-to-store-stack-boundaries.patch
@@ -0,0 +1,85 @@
+From 2185f7d5d7a5650dbcb6a05e9de41f340cd3b865 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <thomas@t-8ch.de>
+Date: Sat, 21 May 2022 12:17:58 +0200
+Subject: [PATCH 3/3] debug: use UINT_PTR_T to store stack boundaries
+
+GCC12 complains about storing invalid pointers, store them as integers
+instead.
+
+obj/acpiexec ../../../source/components/utilities/utdebug.c
+../../../source/components/utilities/utdebug.c: In function 'AcpiUtInitStackPtrTrace':
+../../../source/components/utilities/utdebug.c:188:31: error: storing the address of local variable 'CurrentSp' in 'AcpiGbl_EntryStackPointer' [-Werror=dangling-pointer=]
+  188 |     AcpiGbl_EntryStackPointer = &CurrentSp;
+      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
+../../../source/components/utilities/utdebug.c:185:29: note: 'CurrentSp' declared here
+  185 |     ACPI_SIZE               CurrentSp;
+      |                             ^~~~~~~~~
+
+Fixes #771
+---
+ source/components/debugger/dbstats.c  | 4 ++--
+ source/components/utilities/utdebug.c | 6 +++---
+ source/components/utilities/utinit.c  | 2 +-
+ source/include/acglobal.h             | 4 ++--
+ 4 files changed, 8 insertions(+), 8 deletions(-)
+
+--- a/source/components/debugger/dbstats.c
++++ b/source/components/debugger/dbstats.c
+@@ -647,8 +647,8 @@ AcpiDbDisplayStatistics (
+             AcpiGbl_EntryStackPointer, AcpiGbl_LowestStackPointer);
+ 
+         AcpiOsPrintf ("\nSubsystem Stack Usage:\n\n");
+-        AcpiOsPrintf ("Entry Stack Pointer          %p\n", AcpiGbl_EntryStackPointer);
+-        AcpiOsPrintf ("Lowest Stack Pointer         %p\n", AcpiGbl_LowestStackPointer);
++        AcpiOsPrintf ("Entry Stack Pointer          %p\n", ACPI_TO_POINTER(AcpiGbl_EntryStackPointer));
++        AcpiOsPrintf ("Lowest Stack Pointer         %p\n", ACPI_TO_POINTER(AcpiGbl_LowestStackPointer));
+         AcpiOsPrintf ("Stack Use                    %X (%u)\n", Temp, Temp);
+         AcpiOsPrintf ("Deepest Procedure Nesting    %u\n", AcpiGbl_DeepestNesting);
+ #endif
+--- a/source/components/utilities/utdebug.c
++++ b/source/components/utilities/utdebug.c
+@@ -185,7 +185,7 @@ AcpiUtInitStackPtrTrace (
+     ACPI_SIZE               CurrentSp;
+ 
+ 
+-    AcpiGbl_EntryStackPointer = &CurrentSp;
++    AcpiGbl_EntryStackPointer = ACPI_TO_INTEGER(&CurrentSp);
+ }
+ 
+ 
+@@ -208,9 +208,9 @@ AcpiUtTrackStackPtr (
+     ACPI_SIZE               CurrentSp;
+ 
+ 
+-    if (&CurrentSp < AcpiGbl_LowestStackPointer)
++    if (ACPI_TO_INTEGER(&CurrentSp) < AcpiGbl_LowestStackPointer)
+     {
+-        AcpiGbl_LowestStackPointer = &CurrentSp;
++        AcpiGbl_LowestStackPointer = ACPI_TO_INTEGER(&CurrentSp);
+     }
+ 
+     if (AcpiGbl_NestingLevel > AcpiGbl_DeepestNesting)
+--- a/source/components/utilities/utinit.c
++++ b/source/components/utilities/utinit.c
+@@ -359,7 +359,7 @@ AcpiUtInitGlobals (
+ #endif
+ 
+ #ifdef ACPI_DEBUG_OUTPUT
+-    AcpiGbl_LowestStackPointer          = ACPI_CAST_PTR (ACPI_SIZE, ACPI_SIZE_MAX);
++    AcpiGbl_LowestStackPointer          = ACPI_SIZE_MAX;
+ #endif
+ 
+ #ifdef ACPI_DBG_TRACK_ALLOCATIONS
+--- a/source/include/acglobal.h
++++ b/source/include/acglobal.h
+@@ -332,8 +332,8 @@ extern const ACPI_PREDEFINED_NAMES
+ ACPI_GLOBAL (UINT32,                    AcpiGbl_CurrentNodeCount);
+ ACPI_GLOBAL (UINT32,                    AcpiGbl_CurrentNodeSize);
+ ACPI_GLOBAL (UINT32,                    AcpiGbl_MaxConcurrentNodeCount);
+-ACPI_GLOBAL (ACPI_SIZE *,               AcpiGbl_EntryStackPointer);
+-ACPI_GLOBAL (ACPI_SIZE *,               AcpiGbl_LowestStackPointer);
++ACPI_GLOBAL (ACPI_UINTPTR_T,            AcpiGbl_EntryStackPointer);
++ACPI_GLOBAL (ACPI_UINTPTR_T,            AcpiGbl_LowestStackPointer);
+ ACPI_GLOBAL (UINT32,                    AcpiGbl_DeepestNesting);
+ ACPI_INIT_GLOBAL (UINT32,               AcpiGbl_NestingLevel, 0);
+ #endif