Import ACPICA 20130328.

1 files changed, 326 insertions, 0 deletions

diff --git a/source/compiler/asloffset.c b/source/compiler/asloffset.c
new file mode 100644
index 0000000..190b92a
--- /dev/null
+++ b/source/compiler/asloffset.c
@@ -0,0 +1,326 @@
+/******************************************************************************
+ *
+ * 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;
+}