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diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
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+/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
+/******************************************************************************
+ *
+ * Name: acenv.h - Host and compiler configuration
+ *
+ * Copyright (C) 2000 - 2020, Intel Corp.
+ *
+ *****************************************************************************/
+
+#ifndef __ACENV_H__
+#define __ACENV_H__
+
+/*
+ * Environment configuration. The purpose of this file is to interface ACPICA
+ * to the local environment. This includes compiler-specific, OS-specific,
+ * and machine-specific configuration.
+ */
+
+/* Types for ACPI_MUTEX_TYPE */
+
+#define ACPI_BINARY_SEMAPHORE 0
+#define ACPI_OSL_MUTEX 1
+
+/* Types for DEBUGGER_THREADING */
+
+#define DEBUGGER_SINGLE_THREADED 0
+#define DEBUGGER_MULTI_THREADED 1
+
+/******************************************************************************
+ *
+ * Configuration for ACPI tools and utilities
+ *
+ *****************************************************************************/
+
+/* Common application configuration. All single threaded except for acpi_exec. */
+
+#if (defined ACPI_ASL_COMPILER) || \
+ (defined ACPI_BIN_APP) || \
+ (defined ACPI_DUMP_APP) || \
+ (defined ACPI_HELP_APP) || \
+ (defined ACPI_NAMES_APP) || \
+ (defined ACPI_SRC_APP) || \
+ (defined ACPI_XTRACT_APP) || \
+ (defined ACPI_EXAMPLE_APP) || \
+ (defined ACPI_EFI_HELLO)
+#define ACPI_APPLICATION
+#define ACPI_SINGLE_THREADED
+#define USE_NATIVE_ALLOCATE_ZEROED
+#endif
+
+/* iASL configuration */
+
+#ifdef ACPI_ASL_COMPILER
+#define ACPI_DEBUG_OUTPUT
+#define ACPI_CONSTANT_EVAL_ONLY
+#define ACPI_LARGE_NAMESPACE_NODE
+#define ACPI_DATA_TABLE_DISASSEMBLY
+#define ACPI_32BIT_PHYSICAL_ADDRESS
+#define ACPI_DISASSEMBLER 1
+#endif
+
+/* acpi_exec configuration. Multithreaded with full AML debugger */
+
+#ifdef ACPI_EXEC_APP
+#define ACPI_APPLICATION
+#define ACPI_FULL_DEBUG
+#define ACPI_MUTEX_DEBUG
+#define ACPI_DBG_TRACK_ALLOCATIONS
+#endif
+
+/* acpi_help configuration. Error messages disabled. */
+
+#ifdef ACPI_HELP_APP
+#define ACPI_NO_ERROR_MESSAGES
+#endif
+
+/* acpi_names configuration. Debug output enabled. */
+
+#ifdef ACPI_NAMES_APP
+#define ACPI_DEBUG_OUTPUT
+#endif
+
+/* acpi_exec/acpi_names/Example configuration. Native RSDP used. */
+
+#if (defined ACPI_EXEC_APP) || \
+ (defined ACPI_EXAMPLE_APP) || \
+ (defined ACPI_NAMES_APP)
+#define ACPI_USE_NATIVE_RSDP_POINTER
+#endif
+
+/* acpi_dump configuration. Native mapping used if provided by the host */
+
+#ifdef ACPI_DUMP_APP
+#define ACPI_USE_NATIVE_MEMORY_MAPPING
+#endif
+
+/* acpi_names/Example configuration. Hardware disabled */
+
+#if (defined ACPI_EXAMPLE_APP) || \
+ (defined ACPI_NAMES_APP)
+#define ACPI_REDUCED_HARDWARE 1
+#endif
+
+/* Linkable ACPICA library. Two versions, one with full debug. */
+
+#ifdef ACPI_LIBRARY
+#define ACPI_USE_LOCAL_CACHE
+#define ACPI_DEBUGGER 1
+#define ACPI_DISASSEMBLER 1
+
+#ifdef _DEBUG
+#define ACPI_DEBUG_OUTPUT
+#endif
+#endif
+
+/* Common for all ACPICA applications */
+
+#ifdef ACPI_APPLICATION
+#define ACPI_USE_LOCAL_CACHE
+#endif
+
+/* Common debug/disassembler support */
+
+#ifdef ACPI_FULL_DEBUG
+#define ACPI_DEBUG_OUTPUT
+#define ACPI_DEBUGGER 1
+#define ACPI_DISASSEMBLER 1
+#endif
+
+
+/*
+ * acpisrc CR\LF support
+ * Unix file line endings do not include the carriage return.
+ * If the acpisrc utility is being built using a microsoft compiler, it means
+ * that it will be running on a windows machine which means that the output is
+ * expected to have CR/LF newlines. If the acpisrc utility is built with
+ * anything else, it will likely run on a system with LF newlines. This flag
+ * tells the acpisrc utility that newlines will be in the LF format.
+ */
+#define ACPI_SRC_OS_LF_ONLY 0
+
+/*! [Begin] no source code translation */
+
+/******************************************************************************
+ *
+ * Host configuration files. The compiler configuration files are included
+ * first.
+ *
+ *****************************************************************************/
+
+#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
+#include <acpi/platform/acgcc.h>
+
+#elif defined(_MSC_VER)
+#include "acmsvc.h"
+
+#elif defined(__INTEL_COMPILER)
+#include <acpi/platform/acintel.h>
+
+#endif
+
+#if defined(_LINUX) || defined(__linux__)
+#include <acpi/platform/aclinux.h>
+
+#elif defined(_APPLE) || defined(__APPLE__)
+#include "acmacosx.h"
+
+#elif defined(__DragonFly__)
+#include "acdragonfly.h"
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include "acfreebsd.h"
+
+#elif defined(__NetBSD__)
+#include "acnetbsd.h"
+
+#elif defined(__sun)
+#include "acsolaris.h"
+
+#elif defined(MODESTO)
+#include "acmodesto.h"
+
+#elif defined(NETWARE)
+#include "acnetware.h"
+
+#elif defined(_CYGWIN)
+#include "accygwin.h"
+
+#elif defined(WIN32)
+#include "acwin.h"
+
+#elif defined(WIN64)
+#include "acwin64.h"
+
+#elif defined(_WRS_LIB_BUILD)
+#include "acvxworks.h"
+
+#elif defined(__OS2__)
+#include "acos2.h"
+
+#elif defined(__HAIKU__)
+#include "achaiku.h"
+
+#elif defined(__QNX__)
+#include "acqnx.h"
+
+/*
+ * EFI applications can be built with -nostdlib, in this case, it must be
+ * included after including all other host environmental definitions, in
+ * order to override the definitions.
+ */
+#elif defined(_AED_EFI) || defined(_GNU_EFI) || defined(_EDK2_EFI)
+#include "acefi.h"
+
+#else
+
+/* Unknown environment */
+
+#error Unknown target environment
+#endif
+
+/*! [End] no source code translation !*/
+
+/******************************************************************************
+ *
+ * Setup defaults for the required symbols that were not defined in one of
+ * the host/compiler files above.
+ *
+ *****************************************************************************/
+
+/* 64-bit data types */
+
+#ifndef COMPILER_DEPENDENT_INT64
+#define COMPILER_DEPENDENT_INT64 long long
+#endif
+
+#ifndef COMPILER_DEPENDENT_UINT64
+#define COMPILER_DEPENDENT_UINT64 unsigned long long
+#endif
+
+/* Type of mutex supported by host. Default is binary semaphores. */
+#ifndef ACPI_MUTEX_TYPE
+#define ACPI_MUTEX_TYPE ACPI_BINARY_SEMAPHORE
+#endif
+
+/* Global Lock acquire/release */
+
+#ifndef ACPI_ACQUIRE_GLOBAL_LOCK
+#define ACPI_ACQUIRE_GLOBAL_LOCK(Glptr, acquired) acquired = 1
+#endif
+
+#ifndef ACPI_RELEASE_GLOBAL_LOCK
+#define ACPI_RELEASE_GLOBAL_LOCK(Glptr, pending) pending = 0
+#endif
+
+/* Flush CPU cache - used when going to sleep. Wbinvd or similar. */
+
+#ifndef ACPI_FLUSH_CPU_CACHE
+#define ACPI_FLUSH_CPU_CACHE()
+#endif
+
+/* "inline" keywords - configurable since inline is not standardized */
+
+#ifndef ACPI_INLINE
+#define ACPI_INLINE
+#endif
+
+/* Use ordered initialization if compiler doesn't support designated. */
+#ifndef ACPI_STRUCT_INIT
+#define ACPI_STRUCT_INIT(field, value) value
+#endif
+
+/*
+ * Configurable calling conventions:
+ *
+ * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
+ * ACPI_EXTERNAL_XFACE - External ACPI interfaces
+ * ACPI_INTERNAL_XFACE - Internal ACPI interfaces
+ * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
+ */
+#ifndef ACPI_SYSTEM_XFACE
+#define ACPI_SYSTEM_XFACE
+#endif
+
+#ifndef ACPI_EXTERNAL_XFACE
+#define ACPI_EXTERNAL_XFACE
+#endif
+
+#ifndef ACPI_INTERNAL_XFACE
+#define ACPI_INTERNAL_XFACE
+#endif
+
+#ifndef ACPI_INTERNAL_VAR_XFACE
+#define ACPI_INTERNAL_VAR_XFACE
+#endif
+
+/*
+ * Debugger threading model
+ * Use single threaded if the entire subsystem is contained in an application
+ * Use multiple threaded when the subsystem is running in the kernel.
+ *
+ * By default the model is single threaded if ACPI_APPLICATION is set,
+ * multi-threaded if ACPI_APPLICATION is not set.
+ */
+#ifndef DEBUGGER_THREADING
+#if !defined (ACPI_APPLICATION) || defined (ACPI_EXEC_APP)
+#define DEBUGGER_THREADING DEBUGGER_MULTI_THREADED
+
+#else
+#define DEBUGGER_THREADING DEBUGGER_SINGLE_THREADED
+#endif
+#endif /* !DEBUGGER_THREADING */
+
+/******************************************************************************
+ *
+ * C library configuration
+ *
+ *****************************************************************************/
+
+/*
+ * ACPI_USE_SYSTEM_CLIBRARY - Define this if linking to an actual C library.
+ * Otherwise, local versions of string/memory functions will be used.
+ * ACPI_USE_STANDARD_HEADERS - Define this if linking to a C library and
+ * the standard header files may be used. Defining this implies that
+ * ACPI_USE_SYSTEM_CLIBRARY has been defined.
+ *
+ * The ACPICA subsystem only uses low level C library functions that do not
+ * call operating system services and may therefore be inlined in the code.
+ *
+ * It may be necessary to tailor these include files to the target
+ * generation environment.
+ */
+
+/* Use the standard C library headers. We want to keep these to a minimum. */
+
+#ifdef ACPI_USE_STANDARD_HEADERS
+
+/* Use the standard headers from the standard locations */
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#if defined (ACPI_APPLICATION) || defined(ACPI_LIBRARY)
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <time.h>
+#include <signal.h>
+#endif
+
+#endif /* ACPI_USE_STANDARD_HEADERS */
+
+#ifdef ACPI_APPLICATION
+#define ACPI_FILE FILE *
+#define ACPI_FILE_OUT stdout
+#define ACPI_FILE_ERR stderr
+#else
+#define ACPI_FILE void *
+#define ACPI_FILE_OUT NULL
+#define ACPI_FILE_ERR NULL
+#endif /* ACPI_APPLICATION */
+
+#ifndef ACPI_INIT_FUNCTION
+#define ACPI_INIT_FUNCTION
+#endif
+
+#endif /* __ACENV_H__ */