1 files changed, 360 insertions, 0 deletions
diff --git a/source/components/parser/pstree.c b/source/components/parser/pstree.c
new file mode 100644
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+++ b/source/components/parser/pstree.c
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+/******************************************************************************
+ *
+ * Module Name: pstree - Parser op tree manipulation/traversal/search
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, 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.
+ */
+
+
+#define __PSTREE_C__
+
+#include "acpi.h"
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+
+#define _COMPONENT          ACPI_PARSER
+        ACPI_MODULE_NAME    ("pstree")
+
+/* Local prototypes */
+
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+ACPI_PARSE_OBJECT *
+AcpiPsGetChild (
+    ACPI_PARSE_OBJECT       *op);
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiPsGetArg
+ *
+ * PARAMETERS:  Op              - Get an argument for this op
+ *              Argn            - Nth argument to get
+ *
+ * RETURN:      The argument (as an Op object). NULL if argument does not exist
+ *
+ * DESCRIPTION: Get the specified op's argument.
+ *
+ ******************************************************************************/
+
+ACPI_PARSE_OBJECT *
+AcpiPsGetArg (
+    ACPI_PARSE_OBJECT       *Op,
+    UINT32                  Argn)
+{
+    ACPI_PARSE_OBJECT       *Arg = NULL;
+    const ACPI_OPCODE_INFO  *OpInfo;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+/*
+    if (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP)
+    {
+        return (Op->Common.Value.Arg);
+    }
+*/
+    /* Get the info structure for this opcode */
+
+    OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
+    if (OpInfo->Class == AML_CLASS_UNKNOWN)
+    {
+        /* Invalid opcode or ASCII character */
+
+        return (NULL);
+    }
+
+    /* Check if this opcode requires argument sub-objects */
+
+    if (!(OpInfo->Flags & AML_HAS_ARGS))
+    {
+        /* Has no linked argument objects */
+
+        return (NULL);
+    }
+
+    /* Get the requested argument object */
+
+    Arg = Op->Common.Value.Arg;
+    while (Arg && Argn)
+    {
+        Argn--;
+        Arg = Arg->Common.Next;
+    }
+
+    return (Arg);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiPsAppendArg
+ *
+ * PARAMETERS:  Op              - Append an argument to this Op.
+ *              Arg             - Argument Op to append
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Append an argument to an op's argument list (a NULL arg is OK)
+ *
+ ******************************************************************************/
+
+void
+AcpiPsAppendArg (
+    ACPI_PARSE_OBJECT       *Op,
+    ACPI_PARSE_OBJECT       *Arg)
+{
+    ACPI_PARSE_OBJECT       *PrevArg;
+    const ACPI_OPCODE_INFO  *OpInfo;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    if (!Op)
+    {
+        return;
+    }
+
+    /* Get the info structure for this opcode */
+
+    OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
+    if (OpInfo->Class == AML_CLASS_UNKNOWN)
+    {
+        /* Invalid opcode */
+
+        ACPI_ERROR ((AE_INFO, "Invalid AML Opcode: 0x%2.2X",
+            Op->Common.AmlOpcode));
+        return;
+    }
+
+    /* Check if this opcode requires argument sub-objects */
+
+    if (!(OpInfo->Flags & AML_HAS_ARGS))
+    {
+        /* Has no linked argument objects */
+
+        return;
+    }
+
+    /* Append the argument to the linked argument list */
+
+    if (Op->Common.Value.Arg)
+    {
+        /* Append to existing argument list */
+
+        PrevArg = Op->Common.Value.Arg;
+        while (PrevArg->Common.Next)
+        {
+            PrevArg = PrevArg->Common.Next;
+        }
+        PrevArg->Common.Next = Arg;
+    }
+    else
+    {
+        /* No argument list, this will be the first argument */
+
+        Op->Common.Value.Arg = Arg;
+    }
+
+    /* Set the parent in this arg and any args linked after it */
+
+    while (Arg)
+    {
+        Arg->Common.Parent = Op;
+        Arg = Arg->Common.Next;
+
+        Op->Common.ArgListLength++;
+    }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiPsGetDepthNext
+ *
+ * PARAMETERS:  Origin          - Root of subtree to search
+ *              Op              - Last (previous) Op that was found
+ *
+ * RETURN:      Next Op found in the search.
+ *
+ * DESCRIPTION: Get next op in tree (walking the tree in depth-first order)
+ *              Return NULL when reaching "origin" or when walking up from root
+ *
+ ******************************************************************************/
+
+ACPI_PARSE_OBJECT *
+AcpiPsGetDepthNext (
+    ACPI_PARSE_OBJECT       *Origin,
+    ACPI_PARSE_OBJECT       *Op)
+{
+    ACPI_PARSE_OBJECT       *Next = NULL;
+    ACPI_PARSE_OBJECT       *Parent;
+    ACPI_PARSE_OBJECT       *Arg;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    if (!Op)
+    {
+        return (NULL);
+    }
+
+    /* Look for an argument or child */
+
+    Next = AcpiPsGetArg (Op, 0);
+    if (Next)
+    {
+        return (Next);
+    }
+
+    /* Look for a sibling */
+
+    Next = Op->Common.Next;
+    if (Next)
+    {
+        return (Next);
+    }
+
+    /* Look for a sibling of parent */
+
+    Parent = Op->Common.Parent;
+
+    while (Parent)
+    {
+        Arg = AcpiPsGetArg (Parent, 0);
+        while (Arg && (Arg != Origin) && (Arg != Op))
+        {
+            Arg = Arg->Common.Next;
+        }
+
+        if (Arg == Origin)
+        {
+            /* Reached parent of origin, end search */
+
+            return (NULL);
+        }
+
+        if (Parent->Common.Next)
+        {
+            /* Found sibling of parent */
+
+            return (Parent->Common.Next);
+        }
+
+        Op = Parent;
+        Parent = Parent->Common.Parent;
+    }
+
+    return (Next);
+}
+
+
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiPsGetChild
+ *
+ * PARAMETERS:  Op              - Get the child of this Op
+ *
+ * RETURN:      Child Op, Null if none is found.
+ *
+ * DESCRIPTION: Get op's children or NULL if none
+ *
+ ******************************************************************************/
+
+ACPI_PARSE_OBJECT *
+AcpiPsGetChild (
+    ACPI_PARSE_OBJECT       *Op)
+{
+    ACPI_PARSE_OBJECT       *Child = NULL;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    switch (Op->Common.AmlOpcode)
+    {
+    case AML_SCOPE_OP:
+    case AML_ELSE_OP:
+    case AML_DEVICE_OP:
+    case AML_THERMAL_ZONE_OP:
+    case AML_INT_METHODCALL_OP:
+
+        Child = AcpiPsGetArg (Op, 0);
+        break;
+
+
+    case AML_BUFFER_OP:
+    case AML_PACKAGE_OP:
+    case AML_METHOD_OP:
+    case AML_IF_OP:
+    case AML_WHILE_OP:
+    case AML_FIELD_OP:
+
+        Child = AcpiPsGetArg (Op, 1);
+        break;
+
+
+    case AML_POWER_RES_OP:
+    case AML_INDEX_FIELD_OP:
+
+        Child = AcpiPsGetArg (Op, 2);
+        break;
+
+
+    case AML_PROCESSOR_OP:
+    case AML_BANK_FIELD_OP:
+
+        Child = AcpiPsGetArg (Op, 3);
+        break;
+
+
+    default:
+        /* All others have no children */
+        break;
+    }
+
+    return (Child);
+}
+#endif
+
+