vendor/acpica/20121114

1 files changed, 272 insertions, 0 deletions

diff --git a/source/components/disassembler/dmdeferred.c b/source/components/disassembler/dmdeferred.c
new file mode 100644
index 000000000000..a3f40aee9b1a
--- /dev/null
+++ b/source/components/disassembler/dmdeferred.c
@@ -0,0 +1,272 @@
+/******************************************************************************
+ *
+ * Module Name: dmdeferred - Disassembly of deferred AML opcodes
+ *
+ *****************************************************************************/
+
+/*
+ * 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.
+ */
+
+
+#include "acpi.h"
+#include "accommon.h"
+#include "acdispat.h"
+#include "amlcode.h"
+#include "acdisasm.h"
+#include "acparser.h"
+
+#define _COMPONENT          ACPI_CA_DISASSEMBLER
+        ACPI_MODULE_NAME    ("dmdeferred")
+
+
+/* Local prototypes */
+
+static ACPI_STATUS
+AcpiDmDeferredParse (
+    ACPI_PARSE_OBJECT       *Op,
+    UINT8                   *Aml,
+    UINT32                  AmlLength);
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiDmParseDeferredOps
+ *
+ * PARAMETERS:  Root                - Root of the parse tree
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Parse the deferred opcodes (Methods, regions, etc.)
+ *
+ *****************************************************************************/
+
+ACPI_STATUS
+AcpiDmParseDeferredOps (
+    ACPI_PARSE_OBJECT       *Root)
+{
+    const ACPI_OPCODE_INFO  *OpInfo;
+    ACPI_PARSE_OBJECT       *Op = Root;
+    ACPI_STATUS             Status;
+
+
+    ACPI_FUNCTION_NAME (DmParseDeferredOps);
+
+
+    /* Traverse the entire parse tree */
+
+    while (Op)
+    {
+        OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
+        if (!(OpInfo->Flags & AML_DEFER))
+        {
+            Op = AcpiPsGetDepthNext (Root, Op);
+            continue;
+        }
+
+        /* Now we know we have a deferred opcode */
+
+        switch (Op->Common.AmlOpcode)
+        {
+        case AML_METHOD_OP:
+        case AML_BUFFER_OP:
+        case AML_PACKAGE_OP:
+        case AML_VAR_PACKAGE_OP:
+
+            Status = AcpiDmDeferredParse (Op, Op->Named.Data, Op->Named.Length);
+            if (ACPI_FAILURE (Status))
+            {
+                return (Status);
+            }
+            break;
+
+        /* We don't need to do anything for these deferred opcodes */
+
+        case AML_REGION_OP:
+        case AML_DATA_REGION_OP:
+        case AML_CREATE_QWORD_FIELD_OP:
+        case AML_CREATE_DWORD_FIELD_OP:
+        case AML_CREATE_WORD_FIELD_OP:
+        case AML_CREATE_BYTE_FIELD_OP:
+        case AML_CREATE_BIT_FIELD_OP:
+        case AML_CREATE_FIELD_OP:
+        case AML_BANK_FIELD_OP:
+
+            break;
+
+        default:
+            ACPI_ERROR ((AE_INFO, "Unhandled deferred AML opcode [0x%.4X]",
+                 Op->Common.AmlOpcode));
+            break;
+        }
+
+        Op = AcpiPsGetDepthNext (Root, Op);
+    }
+
+    return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    AcpiDmDeferredParse
+ *
+ * PARAMETERS:  Op                  - Root Op of the deferred opcode
+ *              Aml                 - Pointer to the raw AML
+ *              AmlLength           - Length of the AML
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Parse one deferred opcode
+ *              (Methods, operation regions, etc.)
+ *
+ *****************************************************************************/
+
+static ACPI_STATUS
+AcpiDmDeferredParse (
+    ACPI_PARSE_OBJECT       *Op,
+    UINT8                   *Aml,
+    UINT32                  AmlLength)
+{
+    ACPI_WALK_STATE         *WalkState;
+    ACPI_STATUS             Status;
+    ACPI_PARSE_OBJECT       *SearchOp;
+    ACPI_PARSE_OBJECT       *StartOp;
+    UINT32                  BaseAmlOffset;
+    ACPI_PARSE_OBJECT       *NewRootOp;
+    ACPI_PARSE_OBJECT       *ExtraOp;
+
+
+    ACPI_FUNCTION_TRACE (DmDeferredParse);
+
+
+    if (!Aml || !AmlLength)
+    {
+        return_ACPI_STATUS (AE_OK);
+    }
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Parsing deferred opcode %s [%4.4s]\n",
+        Op->Common.AmlOpName, (char *) &Op->Named.Name));
+
+    /* Need a new walk state to parse the AML */
+
+    WalkState = AcpiDsCreateWalkState (0, Op, NULL, NULL);
+    if (!WalkState)
+    {
+        return_ACPI_STATUS (AE_NO_MEMORY);
+    }
+
+    Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, Aml,
+        AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Parse the AML for this deferred opcode */
+
+    WalkState->ParseFlags &= ~ACPI_PARSE_DELETE_TREE;
+    WalkState->ParseFlags |= ACPI_PARSE_DISASSEMBLE;
+    Status = AcpiPsParseAml (WalkState);
+
+    /*
+     * We need to update all of the AML offsets, since the parser thought
+     * that the method began at offset zero. In reality, it began somewhere
+     * within the ACPI table, at the BaseAmlOffset. Walk the entire tree that
+     * was just created and update the AmlOffset in each Op.
+     */
+    BaseAmlOffset = (Op->Common.Value.Arg)->Common.AmlOffset + 1;
+    StartOp = (Op->Common.Value.Arg)->Common.Next;
+    SearchOp = StartOp;
+
+    while (SearchOp)
+    {
+        SearchOp->Common.AmlOffset += BaseAmlOffset;
+        SearchOp = AcpiPsGetDepthNext (StartOp, SearchOp);
+    }
+
+    /*
+     * For Buffer and Package opcodes, link the newly parsed subtree
+     * into the main parse tree
+     */
+    switch (Op->Common.AmlOpcode)
+    {
+    case AML_BUFFER_OP:
+    case AML_PACKAGE_OP:
+    case AML_VAR_PACKAGE_OP:
+
+        switch (Op->Common.AmlOpcode)
+        {
+        case AML_PACKAGE_OP:
+
+            ExtraOp = Op->Common.Value.Arg;
+            NewRootOp = ExtraOp->Common.Next;
+            ACPI_FREE (ExtraOp);
+            break;
+
+        case AML_VAR_PACKAGE_OP:
+        case AML_BUFFER_OP:
+        default:
+
+            NewRootOp = Op->Common.Value.Arg;
+            break;
+        }
+
+        Op->Common.Value.Arg = NewRootOp->Common.Value.Arg;
+
+        /* Must point all parents to the main tree */
+
+        StartOp = Op;
+        SearchOp = StartOp;
+        while (SearchOp)
+        {
+            if (SearchOp->Common.Parent == NewRootOp)
+            {
+                SearchOp->Common.Parent = Op;
+            }
+
+            SearchOp = AcpiPsGetDepthNext (StartOp, SearchOp);
+        }
+
+        ACPI_FREE (NewRootOp);
+        break;
+
+    default:
+        break;
+    }
+
+    return_ACPI_STATUS (AE_OK);
+}