rpms/acpica-tools
7
0
Fork 0
Code Issues Pull Requests Releases Activity
691cca69d9
acpica-tools/0001-Add-in-basic-infrastructure-for-big-endian-support.patch
Al Stone edb6c78416 Update to upstream 20200925 version 
This update also means a major update for all of the big-endian patching
that has been done.  The older mechanism was getting to unwieldy to keep
maintained, and too sensitive to upstream changes.  Hence, redid all of
the old patches, and took the opportunity to make them more amenable to
change over time.  Ultimately, the goal is to have upstream accept these
in some form.

Signed-off-by: Al Stone <ahs3@redhat.com>
2020-10-19 12:24:09 -06:00

373 lines
13 KiB
Diff
Raw Blame History

From bb45113bc9aed952a499cd1c53988dc81f597582 Mon Sep 17 00:00:00 2001
From: Al Stone <ahs3@redhat.com>
Date: Thu, 15 Oct 2020 11:53:33 -0600
Subject: [PATCH 01/40] Add in basic infrastructure for big-endian support
This adds in some basic functions -- AcpiUtReadUint32(), for example,
to read a UINT32 value in little-endian form and return it in host-native
format -- along with AcpiUtWriteUint() that writes out an integer in
host-native format as a little-endian value.
But, to do that, I'm adding the functions in a new file: utendian.c. So,
the header files need fixing, and the makefiles need to be sure to compile
the new code.
However, this sets things up for the future, where endian-aware code can
be added as the need is uncovered. For now, these functions cover all of
the cases I know about.
Signed-off-by: Al Stone <ahs3@redhat.com>
---
generate/unix/acpibin/Makefile | 1 +
generate/unix/acpidump/Makefile | 1 +
generate/unix/acpiexamples/Makefile | 1 +
generate/unix/acpiexec/Makefile | 1 +
generate/unix/acpihelp/Makefile | 1 +
generate/unix/iasl/Makefile | 1 +
source/components/utilities/utendian.c | 205 +++++++++++++++++++++++++
source/include/acutils.h | 26 ++++
source/include/platform/aclinux.h | 5 +
9 files changed, 242 insertions(+)
create mode 100644 source/components/utilities/utendian.c
Index: acpica-unix2-20200925/generate/unix/acpibin/Makefile
===================================================================
--- acpica-unix2-20200925.orig/generate/unix/acpibin/Makefile
+++ acpica-unix2-20200925/generate/unix/acpibin/Makefile
@@ -37,6 +37,7 @@ OBJECTS = \
$(OBJDIR)/utcache.o\
$(OBJDIR)/utdebug.o\
$(OBJDIR)/utdecode.o\
+ $(OBJDIR)/utendian.o\
$(OBJDIR)/utexcep.o\
$(OBJDIR)/utglobal.o\
$(OBJDIR)/utlock.o\
Index: acpica-unix2-20200925/generate/unix/acpidump/Makefile
===================================================================
--- acpica-unix2-20200925.orig/generate/unix/acpidump/Makefile
+++ acpica-unix2-20200925/generate/unix/acpidump/Makefile
@@ -36,6 +36,7 @@ OBJECTS = \
$(OBJDIR)/osunixdir.o\
$(OBJDIR)/osunixmap.o\
$(OBJDIR)/osunixxf.o\
+ $(OBJDIR)/utendian.o\
$(OBJDIR)/tbprint.o\
$(OBJDIR)/tbxfroot.o\
$(OBJDIR)/utascii.o\
Index: acpica-unix2-20200925/generate/unix/acpiexamples/Makefile
===================================================================
--- acpica-unix2-20200925.orig/generate/unix/acpiexamples/Makefile
+++ acpica-unix2-20200925/generate/unix/acpiexamples/Makefile
@@ -139,6 +139,7 @@ OBJECTS = \
$(OBJDIR)/utdebug.o\
$(OBJDIR)/utdecode.o\
$(OBJDIR)/utdelete.o\
+ $(OBJDIR)/utendian.o\
$(OBJDIR)/uterror.o\
$(OBJDIR)/uteval.o\
$(OBJDIR)/utexcep.o\
Index: acpica-unix2-20200925/generate/unix/acpiexec/Makefile
===================================================================
--- acpica-unix2-20200925.orig/generate/unix/acpiexec/Makefile
+++ acpica-unix2-20200925/generate/unix/acpiexec/Makefile
@@ -214,6 +214,7 @@ OBJECTS = \
$(OBJDIR)/utdebug.o\
$(OBJDIR)/utdecode.o\
$(OBJDIR)/utdelete.o\
+ $(OBJDIR)/utendian.o\
$(OBJDIR)/uterror.o\
$(OBJDIR)/uteval.o\
$(OBJDIR)/utexcep.o\
Index: acpica-unix2-20200925/generate/unix/acpihelp/Makefile
===================================================================
--- acpica-unix2-20200925.orig/generate/unix/acpihelp/Makefile
+++ acpica-unix2-20200925/generate/unix/acpihelp/Makefile
@@ -43,6 +43,7 @@ OBJECTS = \
$(OBJDIR)/getopt.o\
$(OBJDIR)/osunixxf.o\
$(OBJDIR)/utdebug.o\
+ $(OBJDIR)/utendian.o\
$(OBJDIR)/utexcep.o\
$(OBJDIR)/utglobal.o\
$(OBJDIR)/uthex.o\
Index: acpica-unix2-20200925/generate/unix/iasl/Makefile
===================================================================
--- acpica-unix2-20200925.orig/generate/unix/iasl/Makefile
+++ acpica-unix2-20200925/generate/unix/iasl/Makefile
@@ -225,6 +225,7 @@ OBJECTS = \
$(OBJDIR)/utdebug.o\
$(OBJDIR)/utdecode.o\
$(OBJDIR)/utdelete.o\
+ $(OBJDIR)/utendian.o\
$(OBJDIR)/uterror.o\
$(OBJDIR)/utexcep.o\
$(OBJDIR)/utglobal.o\
Index: acpica-unix2-20200925/source/components/utilities/utendian.c
===================================================================
--- /dev/null
+++ acpica-unix2-20200925/source/components/utilities/utendian.c
@@ -0,0 +1,205 @@
+/******************************************************************************
+ *
+ * Module Name: utendian -- byte swapping support for other-endianness
+ *
+ *****************************************************************************/
+
+/*****************************************************************************
+ *
+ * Copyright (c) 2020, Al Stone <ahs3@redhat.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, you may choose to be licensed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ *****************************************************************************/
+
+#include "acpi.h"
+#include "accommon.h"
+
+#define _COMPONENT ACPI_COMPILER
+ ACPI_MODULE_NAME ("utendian")
+
+
+/*
+ * Endianness support functions.
+ *
+ * Ultimately, everything in ACPI tables or AML must be in little-endian
+ * format. However, we sometimes find it necessary to run on a big-endian
+ * machine and create or read those little-endian values. This is a small
+ * libary of functions to make that easier, and more visible.
+ *
+ */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: AcpiUtReadUint16
+ *
+ * PARAMETERS: Src - location containing the little-endian
+ * value
+ *
+ * RETURN: UINT16 value in host-native form
+ *
+ * DESCRIPTION: Read a UINT16 little-endian value from a given location
+ * and return it in host-native form
+ *
+ ******************************************************************************/
+
+#if defined(ACPI_BIG_ENDIAN)
+UINT16 AcpiUtReadUint16 (void *SrcPtr)
+{
+ UINT16 Result = 0;
+ UINT8 *Dst = (UINT8 *)&Result;
+ UINT8 *Src = (UINT8 *)SrcPtr;
+
+ Dst[0] = Src[1];
+ Dst[1] = Src[0];
+
+ return Result;
+}
+#else
+UINT16 AcpiUtReadUint16 (void *SrcPtr) { return *(UINT16 *)SrcPtr; }
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION: AcpiUtReadUint32
+ *
+ * PARAMETERS: Src - location containing the little-endian
+ * value
+ *
+ * RETURN: UINT32 value in host-native form
+ *
+ * DESCRIPTION: Read a UINT32 little-endian value from a given location
+ * and return it in host-native form
+ *
+ ******************************************************************************/
+
+#if defined(ACPI_BIG_ENDIAN)
+UINT32 AcpiUtReadUint32 (void *SrcPtr)
+{
+ UINT32 Result = 0;
+ UINT8 *Dst = (UINT8 *)&Result;
+ UINT8 *Src = (UINT8 *)SrcPtr;
+
+ Dst[0] = Src[3];
+ Dst[1] = Src[2];
+ Dst[2] = Src[1];
+ Dst[3] = Src[0];
+
+ return Result;
+}
+#else
+UINT32 AcpiUtReadUint32 (void *SrcPtr) { return *(UINT32 *)SrcPtr; }
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION: AcpiUtReadUint64
+ *
+ * PARAMETERS: Src - location containing the little-endian
+ * value
+ *
+ * RETURN: UINT64 value in host-native form
+ *
+ * DESCRIPTION: Read a UINT64 little-endian value from a given location
+ * and return it in host-native form
+ *
+ ******************************************************************************/
+
+#if defined(ACPI_BIG_ENDIAN)
+UINT64 AcpiUtReadUint64 (void *SrcPtr)
+{
+ UINT64 Result = 0;
+ UINT8 *Dst = (UINT8 *)&Result;
+ UINT8 *Src = (UINT8 *)SrcPtr;
+
+ Dst[0] = Src[7];
+ Dst[1] = Src[6];
+ Dst[2] = Src[5];
+ Dst[3] = Src[4];
+ Dst[4] = Src[3];
+ Dst[5] = Src[2];
+ Dst[6] = Src[1];
+ Dst[7] = Src[0];
+
+ return Result;
+}
+#else
+UINT64 AcpiUtReadUint64 (void *SrcPtr) { return *(UINT64 *)SrcPtr; }
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION: AcpiUtWriteUint
+ *
+ * PARAMETERS: DstPtr - where to place the retrieved value
+ * DstLength - space in bytes for this int type
+ * SrcPtr - where the little-endian value lives
+ * SrcLength - space in bytes for this int type
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Write a host-native integer value of the given size, and
+ * store it in the location specified in little-endian form.
+ * Given the amount of integer type casting done, this general
+ * version seems the most useful (vs 32->32, 32->16, 16->32,
+ * ad infinitum)
+ *
+ ******************************************************************************/
+
+#if defined(ACPI_BIG_ENDIAN)
+void AcpiUtWriteUint (void *DstPtr, int DstLength,
+ const void *SrcPtr, const int SrcLength)
+{
+ UINT8 *Dst = (UINT8 *)DstPtr;
+ UINT8 *Src = (UINT8 *)SrcPtr;
+ int Length;
+ int ii;
+
+ Length = SrcLength >= DstLength ? DstLength : SrcLength;
+ for (ii = 0; ii < Length; ii++)
+ Dst[ii] = Src[SrcLength - ii - 1];
+
+}
+#else
+void AcpiUtWriteUint (void *DstPtr, int DstLength,
+ const void *SrcPtr, const int SrcLength)
+{
+ UINT8 *Dst = (UINT8 *)DstPtr;
+ UINT8 *Src = (UINT8 *)SrcPtr;
+ uint Length;
+
+ Length = SrcLength > DstLength ? DstLength : SrcLength;
+ memcpy(Dst, Src, Length);
+}
+#endif
+
Index: acpica-unix2-20200925/source/include/acutils.h
===================================================================
--- acpica-unix2-20200925.orig/source/include/acutils.h
+++ acpica-unix2-20200925/source/include/acutils.h
@@ -1161,4 +1161,30 @@ AcpiUtConvertStringToUuid (
UINT8 *UuidBuffer);
#endif
+/*
+ * utendian -- byte-swapping for big-endian support
+ */
+#if defined(ACPI_ASL_COMPILER) || defined(ACPI_EXEC_APP) || \
+ defined(ACPI_HELP_APP) || defined(ACPI_DUMP_APP) || \
+ defined(ACPI_EXAMPLE_APP) || defined(ACPI_BIN_APP)
+UINT32
+AcpiUtReadUint32 (
+ void *SrcPtr);
+
+UINT16
+AcpiUtReadUint16 (
+ void *SrcPtr);
+
+UINT64
+AcpiUtReadUint64 (
+ void *SrcPtr);
+
+void
+AcpiUtWriteUint (
+ void *DstPtr,
+ int DstLength,
+ const void *SrcPtr,
+ const int SrcLength);
+#endif
+
#endif /* _ACUTILS_H */
Index: acpica-unix2-20200925/source/include/platform/aclinux.h
===================================================================
--- acpica-unix2-20200925.orig/source/include/platform/aclinux.h
+++ acpica-unix2-20200925/source/include/platform/aclinux.h
@@ -198,6 +198,7 @@
#ifdef ACPI_USE_STANDARD_HEADERS
#include <unistd.h>
+#include <endian.h>
#endif
/* Define/disable kernel-specific declarators */
@@ -233,6 +234,10 @@
#define __cdecl
#endif
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define ACPI_BIG_ENDIAN
+#endif
+
#endif /* __KERNEL__ */
#endif /* __ACLINUX_H__ */
Reference in New Issue View Git Blame Copy Permalink