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authorJung-uk Kim <jkim@FreeBSD.org>2013-04-04 21:18:57 +0000
committerJung-uk Kim <jkim@FreeBSD.org>2013-04-04 21:18:57 +0000
commit0ff2ef6cfe11e98b10c26dc8f1c359e6502538c8 (patch)
tree2d060ed4fedfc9aace2e673176570faa8ae1d376 /source/compiler/asloffset.c
parent6bb10c5e2fa82c104e57c7468335930ba9e47d4f (diff)
downloadsrc-0ff2ef6cfe11e98b10c26dc8f1c359e6502538c8.tar.gz
src-0ff2ef6cfe11e98b10c26dc8f1c359e6502538c8.zip
Import ACPICA 20130328.vendor/acpica/20130328
Notes
Notes: svn path=/vendor-sys/acpica/dist/; revision=249109 svn path=/vendor-sys/acpica/20130328/; revision=249110; tag=vendor/acpica/20130328
Diffstat (limited to 'source/compiler/asloffset.c')
-rw-r--r--source/compiler/asloffset.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/source/compiler/asloffset.c b/source/compiler/asloffset.c
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+/******************************************************************************
+ *
+ * Module Name: asloffset - Generate a C "offset table" for BIOS use.
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * 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 MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+#include "aslcompiler.h"
+#include "aslcompiler.y.h"
+#include "amlcode.h"
+#include "acnamesp.h"
+
+
+#define _COMPONENT ACPI_COMPILER
+ ACPI_MODULE_NAME ("asloffset")
+
+
+/* Local prototypes */
+
+static void
+LsEmitOffsetTableEntry (
+ UINT32 FileId,
+ ACPI_NAMESPACE_NODE *Node,
+ UINT32 Offset,
+ UINT32 Length,
+ char *OpName,
+ UINT64 Value,
+ UINT8 AmlOpcode);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: LsAmlOffsetWalk
+ *
+ * PARAMETERS: ASL_WALK_CALLBACK
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Process one node during a offset table file generation.
+ *
+ * Three types of objects are currently emitted to the offset table:
+ * 1) Tagged (named) resource descriptors
+ * 2) Named integer objects with constant integer values
+ * 3) Operation Regions that have constant Offset (address) parameters
+ *
+ * The offset table allows the BIOS to dynamically update the values of these
+ * objects at boot time.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+LsAmlOffsetWalk (
+ ACPI_PARSE_OBJECT *Op,
+ UINT32 Level,
+ void *Context)
+{
+ UINT32 FileId = (UINT32) ACPI_TO_INTEGER (Context);
+ ACPI_NAMESPACE_NODE *Node;
+ UINT32 Length;
+ UINT32 OffsetOfOpcode;
+ ACPI_PARSE_OBJECT *AddressOp;
+
+
+ /* Ignore actual data blocks for resource descriptors */
+
+ if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DATA)
+ {
+ return (AE_OK); /* Do NOT update the global AML offset */
+ }
+
+ /* We are only interested in named objects (have a namespace node) */
+
+ Node = Op->Asl.Node;
+ if (!Node)
+ {
+ Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
+ return (AE_OK);
+ }
+
+ /* Named resource descriptor (has a descriptor tag) */
+
+ if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE) &&
+ (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC))
+ {
+ LsEmitOffsetTableEntry (FileId, Node, Gbl_CurrentAmlOffset,
+ Op->Asl.FinalAmlLength, Op->Asl.ParseOpName, 0, Op->Asl.Extra);
+ }
+
+ /* Named object -- Name (NameString, DataRefObject) */
+
+ else if (Op->Asl.AmlOpcode == AML_NAME_OP)
+ {
+ if (!Op->Asl.Child)
+ {
+ FlPrintFile (FileId, "%s NO CHILD!\n", MsgBuffer);
+ return (AE_OK);
+ }
+
+ Length = Op->Asl.FinalAmlLength;
+
+ /* Get to the NameSeg/NamePath Op (and length of the name) */
+
+ Op = Op->Asl.Child;
+ OffsetOfOpcode = Length + Op->Asl.FinalAmlLength;
+
+ /* Get actual value associated with the name */
+
+ Op = Op->Asl.Next;
+ switch (Op->Asl.AmlOpcode)
+ {
+ /*
+ * We are only interested in integer constants that can be changed
+ * at boot time. Note, the One/Ones/Zero opcodes are considered
+ * non-changeable, so we ignore them here.
+ */
+ case AML_BYTE_OP:
+ case AML_WORD_OP:
+ case AML_DWORD_OP:
+ case AML_QWORD_OP:
+
+ /* The +1/-1 is to handle the integer size prefix (opcode) */
+
+ LsEmitOffsetTableEntry (FileId, Node,
+ (Gbl_CurrentAmlOffset + OffsetOfOpcode + 1),
+ (Op->Asl.FinalAmlLength - 1), Op->Asl.ParseOpName,
+ Op->Asl.Value.Integer, (UINT8) Op->Asl.AmlOpcode);
+ break;
+
+ default:
+ break;
+ }
+
+ Gbl_CurrentAmlOffset += Length;
+ return (AE_OK);
+ }
+
+ /* OperationRegion (NameString, RegionSpace, RegionOffset, RegionLength) */
+
+ else if (Op->Asl.AmlOpcode == AML_REGION_OP)
+ {
+ Length = Op->Asl.FinalAmlLength;
+
+ /* Get the name/namepath node */
+
+ AddressOp = Op->Asl.Child;
+ OffsetOfOpcode = Length + AddressOp->Asl.FinalAmlLength + 1;
+
+ /* Get the SpaceId node, then the Offset (address) node */
+
+ AddressOp = AddressOp->Asl.Next;
+ AddressOp = AddressOp->Asl.Next;
+
+ switch (AddressOp->Asl.AmlOpcode)
+ {
+ /*
+ * We are only interested in integer constants that can be changed
+ * at boot time. Note, the One/Ones/Zero opcodes are considered
+ * non-changeable, so we ignore them here.
+ */
+ case AML_BYTE_OP:
+ case AML_WORD_OP:
+ case AML_DWORD_OP:
+ case AML_QWORD_OP:
+
+ /* The +1/-1 is to handle the integer size prefix (opcode) */
+
+ LsEmitOffsetTableEntry (FileId, Node,
+ (Gbl_CurrentAmlOffset + OffsetOfOpcode + 1),
+ (AddressOp->Asl.FinalAmlLength - 1), Op->Asl.ParseOpName,
+ AddressOp->Asl.Value.Integer, (UINT8) AddressOp->Asl.AmlOpcode);
+
+ Gbl_CurrentAmlOffset += Length;
+ return (AE_OK);
+
+ default:
+ break;
+ }
+ }
+
+ Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
+ return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: LsEmitOffsetTableEntry
+ *
+ * PARAMETERS: FileId - ID of current listing file
+ * Node - Namespace node associated with the name
+ * Offset - Offset of the value within the AML table
+ * Length - Length in bytes of the value
+ * OpName - Name of the AML opcode
+ * Value - Current value of the AML field
+ * AmlOpcode - Opcode associated with the field
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Emit a line of the offset table (-so option)
+ *
+ ******************************************************************************/
+
+static void
+LsEmitOffsetTableEntry (
+ UINT32 FileId,
+ ACPI_NAMESPACE_NODE *Node,
+ UINT32 Offset,
+ UINT32 Length,
+ char *OpName,
+ UINT64 Value,
+ UINT8 AmlOpcode)
+{
+ ACPI_BUFFER TargetPath;
+ ACPI_STATUS Status;
+
+
+ /* Get the full pathname to the namespace node */
+
+ TargetPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
+ Status = AcpiNsHandleToPathname (Node, &TargetPath);
+ if (ACPI_FAILURE (Status))
+ {
+ return;
+ }
+
+ /* [1] - Skip the opening backslash for the path */
+
+ strcpy (MsgBuffer, "\"");
+ strcat (MsgBuffer, &((char *) TargetPath.Pointer)[1]);
+ strcat (MsgBuffer, "\",");
+ ACPI_FREE (TargetPath.Pointer);
+
+ /*
+ * Max offset is 4G, constrained by 32-bit ACPI table length.
+ * Max Length for Integers is 8 bytes.
+ */
+ FlPrintFile (FileId,
+ " {%-29s 0x%8.8X, 0x%2.2X, 0x%8.8X%8.8X}, /* %s */\n",
+ MsgBuffer, Offset, AmlOpcode, ACPI_FORMAT_UINT64 (Value), OpName);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: LsDoOffsetTableHeader, LsDoOffsetTableFooter
+ *
+ * PARAMETERS: FileId - ID of current listing file
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Header and footer for the offset table file.
+ *
+ ******************************************************************************/
+
+void
+LsDoOffsetTableHeader (
+ UINT32 FileId)
+{
+
+ Gbl_CurrentAmlOffset = 0;
+
+ FlPrintFile (FileId,
+ "#ifndef __AML_OFFSET_TABLE_H\n"
+ "#define __AML_OFFSET_TABLE_H\n\n");
+
+ FlPrintFile (FileId, "typedef struct {\n"
+ " char *Pathname;\n"
+ " unsigned long Offset;\n"
+ " unsigned char AmlOpcode;\n"
+ " unsigned long long AmlValue;\n"
+ "} AML_OFFSET_TABLE_ENTRY;\n\n");
+
+ FlPrintFile (FileId,
+ "#endif /* __AML_OFFSET_TABLE_H */\n\n");
+
+ FlPrintFile (FileId,
+ "AML_OFFSET_TABLE_ENTRY %s_%s_OffsetTable[] =\n{\n",
+ Gbl_TableSignature, Gbl_TableId);
+}
+
+
+void
+LsDoOffsetTableFooter (
+ UINT32 FileId)
+{
+
+ FlPrintFile (FileId,
+ " {0,0,0,0} /* Table terminator */\n};\n\n");
+ Gbl_CurrentAmlOffset = 0;
+}