vendor/acpica/20120215

1 files changed, 593 insertions, 0 deletions

diff --git a/source/compiler/aslcodegen.c b/source/compiler/aslcodegen.c
new file mode 100644
index 000000000000..825dd194fc07
--- /dev/null
+++ b/source/compiler/aslcodegen.c
@@ -0,0 +1,593 @@
+
+/******************************************************************************
+ *
+ * Module Name: aslcodegen - AML code generation
+ *
+ *****************************************************************************/
+
+/*
+ * 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 "aslcompiler.h"
+#include "aslcompiler.y.h"
+#include "amlcode.h"
+
+#define _COMPONENT          ACPI_COMPILER
+        ACPI_MODULE_NAME    ("aslcodegen")
+
+/* Local prototypes */
+
+static ACPI_STATUS
+CgAmlWriteWalk (
+    ACPI_PARSE_OBJECT       *Op,
+    UINT32                  Level,
+    void                    *Context);
+
+static void
+CgLocalWriteAmlData (
+    ACPI_PARSE_OBJECT       *Op,
+    void                    *Buffer,
+    UINT32                  Length);
+
+static void
+CgWriteAmlOpcode (
+    ACPI_PARSE_OBJECT       *Op);
+
+static void
+CgWriteTableHeader (
+    ACPI_PARSE_OBJECT       *Op);
+
+static void
+CgCloseTable (
+    void);
+
+static void
+CgWriteNode (
+    ACPI_PARSE_OBJECT       *Op);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgGenerateAmlOutput
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Generate AML code.  Currently generates the listing file
+ *              simultaneously.
+ *
+ ******************************************************************************/
+
+void
+CgGenerateAmlOutput (
+    void)
+{
+
+    DbgPrint (ASL_DEBUG_OUTPUT, "\nWriting AML\n\n");
+
+    /* Generate the AML output file */
+
+    FlSeekFile (ASL_FILE_SOURCE_OUTPUT, 0);
+    Gbl_SourceLine = 0;
+    Gbl_NextError = Gbl_ErrorLog;
+
+    TrWalkParseTree (RootNode, ASL_WALK_VISIT_DOWNWARD,
+        CgAmlWriteWalk, NULL, NULL);
+    CgCloseTable ();
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgAmlWriteWalk
+ *
+ * PARAMETERS:  ASL_WALK_CALLBACK
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Parse tree walk to generate the AML code.
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+CgAmlWriteWalk (
+    ACPI_PARSE_OBJECT       *Op,
+    UINT32                  Level,
+    void                    *Context)
+{
+
+    /*
+     * Print header at level 0. Alignment assumes 32-bit pointers
+     */
+    if (!Level)
+    {
+        DbgPrint (ASL_TREE_OUTPUT,
+            "Final parse tree used for AML output:\n");
+        DbgPrint (ASL_TREE_OUTPUT,
+            "%*s Value    P_Op A_Op OpLen PByts Len  SubLen PSubLen OpPtr    Child    Parent   Flags    AcTyp    Final Col L\n",
+            76, " ");
+    }
+
+    /* Debug output */
+
+    DbgPrint (ASL_TREE_OUTPUT,
+        "%5.5d [%2d]", Op->Asl.LogicalLineNumber, Level);
+    UtPrintFormattedName (Op->Asl.ParseOpcode, Level);
+
+    if (Op->Asl.ParseOpcode == PARSEOP_NAMESEG    ||
+        Op->Asl.ParseOpcode == PARSEOP_NAMESTRING ||
+        Op->Asl.ParseOpcode == PARSEOP_METHODCALL)
+    {
+        DbgPrint (ASL_TREE_OUTPUT,
+            "%10.32s      ", Op->Asl.ExternalName);
+    }
+    else
+    {
+        DbgPrint (ASL_TREE_OUTPUT, "                ");
+    }
+
+    DbgPrint (ASL_TREE_OUTPUT,
+    "%08X %04X %04X %01X     %04X  %04X %04X   %04X    %08X %08X %08X %08X %08X %04X  %02d  %02d\n",
+            /* 1  */ (UINT32) Op->Asl.Value.Integer,
+            /* 2  */ Op->Asl.ParseOpcode,
+            /* 3  */ Op->Asl.AmlOpcode,
+            /* 4  */ Op->Asl.AmlOpcodeLength,
+            /* 5  */ Op->Asl.AmlPkgLenBytes,
+            /* 6  */ Op->Asl.AmlLength,
+            /* 7  */ Op->Asl.AmlSubtreeLength,
+            /* 8  */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0,
+            /* 9  */ Op,
+            /* 10 */ Op->Asl.Child,
+            /* 11 */ Op->Asl.Parent,
+            /* 12 */ Op->Asl.CompileFlags,
+            /* 13 */ Op->Asl.AcpiBtype,
+            /* 14 */ Op->Asl.FinalAmlLength,
+            /* 15 */ Op->Asl.Column,
+            /* 16 */ Op->Asl.LineNumber);
+
+    /* Generate the AML for this node */
+
+    CgWriteNode (Op);
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgLocalWriteAmlData
+ *
+ * PARAMETERS:  Op              - Current parse op
+ *              Buffer          - Buffer to write
+ *              Length          - Size of data in buffer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Write a buffer of AML data to the AML output file.
+ *
+ ******************************************************************************/
+
+static void
+CgLocalWriteAmlData (
+    ACPI_PARSE_OBJECT       *Op,
+    void                    *Buffer,
+    UINT32                  Length)
+{
+
+    /* Write the raw data to the AML file */
+
+    FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length);
+
+    /* Update the final AML length for this node (used for listings) */
+
+    if (Op)
+    {
+        Op->Asl.FinalAmlLength += Length;
+    }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgWriteAmlOpcode
+ *
+ * PARAMETERS:  Op            - Parse node with an AML opcode
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Write the AML opcode corresponding to a parse node.
+ *
+ ******************************************************************************/
+
+static void
+CgWriteAmlOpcode (
+    ACPI_PARSE_OBJECT       *Op)
+{
+    UINT8                   PkgLenFirstByte;
+    UINT32                  i;
+    union {
+        UINT16                  Opcode;
+        UINT8                   OpcodeBytes[2];
+    } Aml;
+    union {
+        UINT32                  Len;
+        UINT8                   LenBytes[4];
+    } PkgLen;
+
+
+    /* We expect some DEFAULT_ARGs, just ignore them */
+
+    if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
+    {
+        return;
+    }
+
+    switch (Op->Asl.AmlOpcode)
+    {
+    case AML_UNASSIGNED_OPCODE:
+
+        /* These opcodes should not get here */
+
+        printf ("Found a node with an unassigned AML opcode\n");
+        fprintf (stderr, "Found a node with an unassigned AML opcode\n");
+        return;
+
+    case AML_INT_RESERVEDFIELD_OP:
+
+        /* Special opcodes for within a field definition */
+
+        Aml.Opcode = AML_FIELD_OFFSET_OP;
+        break;
+
+    case AML_INT_ACCESSFIELD_OP:
+
+        Aml.Opcode = AML_FIELD_ACCESS_OP;
+        break;
+
+    case AML_INT_CONNECTION_OP:
+
+        Aml.Opcode = AML_FIELD_CONNECTION_OP;
+        break;
+
+    default:
+        Aml.Opcode = Op->Asl.AmlOpcode;
+        break;
+    }
+
+
+    switch (Aml.Opcode)
+    {
+    case AML_PACKAGE_LENGTH:
+
+        /* Value is the length to be encoded (Used in field definitions) */
+
+        PkgLen.Len = (UINT32) Op->Asl.Value.Integer;
+        break;
+
+    default:
+
+        /* Check for two-byte opcode */
+
+        if (Aml.Opcode > 0x00FF)
+        {
+            /* Write the high byte first */
+
+            CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1);
+        }
+
+        CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1);
+
+        /* Subtreelength doesn't include length of package length bytes */
+
+        PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes;
+        break;
+    }
+
+    /* Does this opcode have an associated "PackageLength" field? */
+
+    if (Op->Asl.CompileFlags & NODE_AML_PACKAGE)
+    {
+        if (Op->Asl.AmlPkgLenBytes == 1)
+        {
+            /* Simplest case -- no bytes to follow, just write the count */
+
+            CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1);
+        }
+        else if (Op->Asl.AmlPkgLenBytes != 0)
+        {
+            /*
+             * Encode the "bytes to follow" in the first byte, top two bits.
+             * The low-order nybble of the length is in the bottom 4 bits
+             */
+            PkgLenFirstByte = (UINT8)
+                (((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) |
+                (PkgLen.LenBytes[0] & 0x0F));
+
+            CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1);
+
+            /*
+             * Shift the length over by the 4 bits we just stuffed
+             * in the first byte
+             */
+            PkgLen.Len >>= 4;
+
+            /* Now we can write the remaining bytes - either 1, 2, or 3 bytes */
+
+            for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++)
+            {
+                CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1);
+            }
+        }
+    }
+
+    switch (Aml.Opcode)
+    {
+    case AML_BYTE_OP:
+
+        CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1);
+        break;
+
+    case AML_WORD_OP:
+
+        CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2);
+       break;
+
+    case AML_DWORD_OP:
+
+        CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4);
+        break;
+
+    case AML_QWORD_OP:
+
+        CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8);
+        break;
+
+    case AML_STRING_OP:
+
+        CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
+        break;
+
+    default:
+        /* All data opcodes must appear above */
+        break;
+    }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgWriteTableHeader
+ *
+ * PARAMETERS:  Op        - The DEFINITIONBLOCK node
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK
+ *
+ ******************************************************************************/
+
+static void
+CgWriteTableHeader (
+    ACPI_PARSE_OBJECT       *Op)
+{
+    ACPI_PARSE_OBJECT       *Child;
+
+
+    /* AML filename */
+
+    Child = Op->Asl.Child;
+
+    /* Signature */
+
+    Child = Child->Asl.Next;
+    strncpy (TableHeader.Signature, Child->Asl.Value.String, 4);
+
+    /* Revision */
+
+    Child = Child->Asl.Next;
+    TableHeader.Revision = (UINT8) Child->Asl.Value.Integer;
+
+    /* Command-line Revision override */
+
+    if (Gbl_RevisionOverride)
+    {
+        TableHeader.Revision = Gbl_RevisionOverride;
+    }
+
+    /* OEMID */
+
+    Child = Child->Asl.Next;
+    strncpy (TableHeader.OemId, Child->Asl.Value.String, 6);
+
+    /* OEM TableID */
+
+    Child = Child->Asl.Next;
+    strncpy (TableHeader.OemTableId, Child->Asl.Value.String, 8);
+
+    /* OEM Revision */
+
+    Child = Child->Asl.Next;
+    TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer;
+
+    /* Compiler ID */
+
+    strncpy (TableHeader.AslCompilerId, ASL_CREATOR_ID, 4);
+
+    /* Compiler version */
+
+    TableHeader.AslCompilerRevision = ASL_REVISION;
+
+    /* Table length. Checksum zero for now, will rewrite later */
+
+    TableHeader.Length   = Gbl_TableLength;
+    TableHeader.Checksum = 0;
+
+    CgLocalWriteAmlData (Op, &TableHeader, sizeof (ACPI_TABLE_HEADER));
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgCloseTable
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Complete the ACPI table by calculating the checksum and
+ *              re-writing the header.
+ *
+ ******************************************************************************/
+
+static void
+CgCloseTable (
+    void)
+{
+    signed char         Sum;
+    UINT8               FileByte;
+
+
+    FlSeekFile (ASL_FILE_AML_OUTPUT, 0);
+    Sum = 0;
+
+    /* Calculate the checksum over the entire file */
+
+    while (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) == AE_OK)
+    {
+        Sum = (signed char) (Sum + FileByte);
+    }
+
+    /* Re-write the table header with the checksum */
+
+    TableHeader.Checksum = (UINT8) (0 - Sum);
+
+    FlSeekFile (ASL_FILE_AML_OUTPUT, 0);
+    CgLocalWriteAmlData (NULL, &TableHeader, sizeof (ACPI_TABLE_HEADER));
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    CgWriteNode
+ *
+ * PARAMETERS:  Op            - Parse node to write.
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Write the AML that corresponds to a parse node.
+ *
+ ******************************************************************************/
+
+static void
+CgWriteNode (
+    ACPI_PARSE_OBJECT       *Op)
+{
+    ASL_RESOURCE_NODE       *Rnode;
+
+
+    /* Always check for DEFAULT_ARG and other "Noop" nodes */
+    /* TBD: this may not be the best place for this check */
+
+    if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)  ||
+        (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL)     ||
+        (Op->Asl.ParseOpcode == PARSEOP_INCLUDE)      ||
+        (Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END))
+    {
+        return;
+    }
+
+    Op->Asl.FinalAmlLength = 0;
+
+    switch (Op->Asl.AmlOpcode)
+    {
+    case AML_RAW_DATA_BYTE:
+    case AML_RAW_DATA_WORD:
+    case AML_RAW_DATA_DWORD:
+    case AML_RAW_DATA_QWORD:
+
+        CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength);
+        return;
+
+
+    case AML_RAW_DATA_BUFFER:
+
+        CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength);
+        return;
+
+
+    case AML_RAW_DATA_CHAIN:
+
+        Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer);
+        while (Rnode)
+        {
+            CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength);
+            Rnode = Rnode->Next;
+        }
+        return;
+
+    default:
+        /* Internal data opcodes must all appear above */
+        break;
+    }
+
+    switch (Op->Asl.ParseOpcode)
+    {
+    case PARSEOP_DEFAULT_ARG:
+
+        break;
+
+    case PARSEOP_DEFINITIONBLOCK:
+
+        CgWriteTableHeader (Op);
+        break;
+
+    case PARSEOP_NAMESEG:
+    case PARSEOP_NAMESTRING:
+    case PARSEOP_METHODCALL:
+
+        CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
+        break;
+
+    default:
+
+        CgWriteAmlOpcode (Op);
+        break;
+    }
+}
+
+