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Diffstat (limited to 'compiler/dtio.c')
| -rw-r--r-- | compiler/dtio.c | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/compiler/dtio.c b/compiler/dtio.c new file mode 100644 index 0000000000000..469cea60917da --- /dev/null +++ b/compiler/dtio.c @@ -0,0 +1,512 @@ +/****************************************************************************** + * + * Module Name: dtio.c - File I/O support for data table compiler + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. + * All rights reserved. + * + * 2. License + * + * 2.1. This is your license from Intel Corp. under its intellectual property + * rights. You may have additional license terms from the party that provided + * you this software, covering your right to use that party's intellectual + * property rights. + * + * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a + * copy of the source code appearing in this file ("Covered Code") an + * irrevocable, perpetual, worldwide license under Intel's copyrights in the + * base code distributed originally by Intel ("Original Intel Code") to copy, + * make derivatives, distribute, use and display any portion of the Covered + * Code in any form, with the right to sublicense such rights; and + * + * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent + * license (with the right to sublicense), under only those claims of Intel + * patents that are infringed by the Original Intel Code, to make, use, sell, + * offer to sell, and import the Covered Code and derivative works thereof + * solely to the minimum extent necessary to exercise the above copyright + * license, and in no event shall the patent license extend to any additions + * to or modifications of the Original Intel Code. No other license or right + * is granted directly or by implication, estoppel or otherwise; + * + * The above copyright and patent license is granted only if the following + * conditions are met: + * + * 3. Conditions + * + * 3.1. Redistribution of Source with Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification with rights to further distribute source must include + * the above Copyright Notice, the above License, this list of Conditions, + * and the following Disclaimer and Export Compliance provision. In addition, + * Licensee must cause all Covered Code to which Licensee contributes to + * contain a file documenting the changes Licensee made to create that Covered + * Code and the date of any change. Licensee must include in that file the + * documentation of any changes made by any predecessor Licensee. Licensee + * must include a prominent statement that the modification is derived, + * directly or indirectly, from Original Intel Code. + * + * 3.2. Redistribution of Source with no Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification without rights to further distribute source must + * include the following Disclaimer and Export Compliance provision in the + * documentation and/or other materials provided with distribution. In + * addition, Licensee may not authorize further sublicense of source of any + * portion of the Covered Code, and must include terms to the effect that the + * license from Licensee to its licensee is limited to the intellectual + * property embodied in the software Licensee provides to its licensee, and + * not to intellectual property embodied in modifications its licensee may + * make. + * + * 3.3. Redistribution of Executable. Redistribution in executable form of any + * substantial portion of the Covered Code or modification must reproduce the + * above Copyright Notice, and the following Disclaimer and Export Compliance + * provision in the documentation and/or other materials provided with the + * distribution. + * + * 3.4. Intel retains all right, title, and interest in and to the Original + * Intel Code. + * + * 3.5. Neither the name Intel nor any other trademark owned or controlled by + * Intel shall be used in advertising or otherwise to promote the sale, use or + * other dealings in products derived from or relating to the Covered Code + * without prior written authorization from Intel. + * + * 4. Disclaimer and Export Compliance + * + * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED + * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE + * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, + * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY + * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY + * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A + * PARTICULAR PURPOSE. + * + * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES + * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR + * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, + * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY + * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL + * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS + * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY + * LIMITED REMEDY. + * + * 4.3. Licensee shall not export, either directly or indirectly, any of this + * software or system incorporating such software without first obtaining any + * required license or other approval from the U. S. Department of Commerce or + * any other agency or department of the United States Government. In the + * event Licensee exports any such software from the United States or + * re-exports any such software from a foreign destination, Licensee shall + * ensure that the distribution and export/re-export of the software is in + * compliance with all laws, regulations, orders, or other restrictions of the + * U.S. Export Administration Regulations. Licensee agrees that neither it nor + * any of its subsidiaries will export/re-export any technical data, process, + * software, or service, directly or indirectly, to any country for which the + * United States government or any agency thereof requires an export license, + * other governmental approval, or letter of assurance, without first obtaining + * such license, approval or letter. + * + *****************************************************************************/ + +#define __DTIO_C__ + +#include "aslcompiler.h" +#include "dtcompiler.h" + +#define _COMPONENT DT_COMPILER + ACPI_MODULE_NAME ("dtio") + + +/****************************************************************************** + * + * FUNCTION: DtIsComment + * + * PARAMETERS: Line - Current source code line + * + * RETURN: TRUE if comment, FALSE otherwise + * + * DESCRIPTION: Detect a comment in the source module + * + *****************************************************************************/ + +/* TBD: Temporary: very simple code to detect comments */ + +static int +DtIsComment( + char *Line) +{ + + if (!ACPI_STRNCMP (Line, "/*", 2) || + !ACPI_STRNCMP (Line, " *", 2)) + { + return 1; + } + + return 0; +} + + +/****************************************************************************** + * + * FUNCTION: DtTrim + * + * PARAMETERS: String - Current source code line to trim + * + * RETURN: Trimmed line. Must be freed by caller. + * + * DESCRIPTION: Trim left and right spaces + * + *****************************************************************************/ + +static char * +DtTrim ( + char *String) +{ + char *Start; + char *End; + char *ReturnString; + ACPI_SIZE Length; + + + /* Skip lines that start with a space */ + + if (!ACPI_STRCMP (String, " ")) + { + ReturnString = UtLocalCalloc (1); + return (ReturnString); + } + + /* Setup pointers to start and end of input string */ + + Start = String; + End = String + ACPI_STRLEN (String) - 1; + + /* Find first non-whitespace character */ + + while ((Start <= End) && ((*Start == ' ') || (*Start == '\t'))) + { + Start++; + } + + /* Find last non-space character */ + + while (End >= Start) + { + if (*End == '\r' || *End == '\n') + { + End--; + continue; + } + + if (*End != ' ') + { + break; + } + + End--; + } + + /* Remove any quotes around the string */ + + if (*Start == '\"') + { + Start++; + } + if (*End == '\"') + { + End--; + } + + /* Create the trimmed return string */ + + Length = ACPI_PTR_DIFF (End, Start) + 1; + ReturnString = UtLocalCalloc (Length + 1); + if (ACPI_STRLEN (Start)) + { + ACPI_STRNCPY (ReturnString, Start, Length); + } + + ReturnString[Length] = 0; + return (ReturnString); +} + + +/****************************************************************************** + * + * FUNCTION: DtLinkField + * + * PARAMETERS: Field - New field object to link + * + * RETURN: None + * + * DESCRIPTION: Link one field name and value to the list + * + *****************************************************************************/ + +static void +DtLinkField ( + DT_FIELD *Field) +{ + DT_FIELD *Prev; + DT_FIELD *Next; + + + Prev = Next = Gbl_FieldList; + + while (Next) + { + Prev = Next; + Next = Next->Next; + } + + if (Prev) + { + Prev->Next = Field; + } + else + { + Gbl_FieldList = Field; + } +} + + +/****************************************************************************** + * + * FUNCTION: DtParseLine + * + * PARAMETERS: LineBuffer - Current source code line + * Line - Current line number in the source + * Offset - Current byte offset of the line + * + * RETURN: None + * + * DESCRIPTION: Parse one source line + * + *****************************************************************************/ + +static void +DtParseLine ( + char *LineBuffer, + UINT32 Line, + UINT32 Offset) +{ + char *Start; + char *End; + char *TmpName; + char *TmpValue; + char *Name; + char *Value; + char *Colon; + UINT32 Length; + DT_FIELD *Field; + UINT32 Column; + UINT32 NameColumn; + + + if (!LineBuffer || DtIsComment (LineBuffer)) + { + return; + } + + Colon = strchr (LineBuffer, ':'); + if (!Colon || *(Colon - 1) != ' ') + { + return; + } + + Start = LineBuffer; + End = Colon; + + while (Start < Colon) + { + if (*Start == ' ') + { + Start++; + continue; + } + + /* Found left bracket, go to the right bracket */ + + if (*Start == '[') + { + while (Start < Colon && *Start != ']') + { + Start++; + } + + if (Start == Colon) + { + MYDEBUG ("ERROR: right bracket reaches colon position\n"); + break; + } + + Start++; + continue; + } + + break; + } + + /* + * There are two column values. One for the field name, + * and one for the field value. + */ + Column = ACPI_PTR_DIFF (Colon, LineBuffer) + 3; + NameColumn = ACPI_PTR_DIFF (Start, LineBuffer) + 1; + + Length = ACPI_PTR_DIFF (End, Start); + + TmpName = UtLocalCalloc (Length + 1); + ACPI_STRNCPY (TmpName, Start, Length); + Name = DtTrim (TmpName); + ACPI_FREE (TmpName); + + Start = End = (Colon + 1); + + while (*End) + { + /* Found left quotation, go to the right quotation and break */ + + if (*End == '"') + { + End++; + while (*End && *End != '"') + { + End++; + } + + End++; + break; + } + + if (*End == '(' || + *End == '<' || + *End == '/') + { + break; + } + + End++; + } + + Length = ACPI_PTR_DIFF (End, Start); + TmpValue = UtLocalCalloc (Length + 1); + ACPI_STRNCPY (TmpValue, Start, Length); + Value = DtTrim (TmpValue); + ACPI_FREE (TmpValue); + + if (Name && Value) + { + Field = UtLocalCalloc (sizeof (DT_FIELD)); + Field->Name = Name; + Field->Value = Value; + Field->Line = Line; + Field->ByteOffset = Offset; + Field->NameColumn = NameColumn; + Field->Column = Column; + + DtLinkField (Field); + } +} + + +/****************************************************************************** + * + * FUNCTION: DtScanFile + * + * PARAMETERS: Handle - Open file handle for the source file + * + * RETURN: Pointer to start of the constructed parse tree. + * + * DESCRIPTION: Scan source file, link all field name and value + * to the global parse tree: Gbl_FieldList + * + *****************************************************************************/ + +DT_FIELD * +DtScanFile ( + FILE *Handle) +{ + UINT32 Line = 0; + UINT32 Offset = 0; + + + /* Get the file size */ + + Gbl_InputByteCount = DtGetFileSize (Handle); + + /* Scan line-by-line */ + + while (fgets (Gbl_CurrentLineBuffer, ASL_LINE_BUFFER_SIZE, Handle)) + { + Line++; + Gbl_CurrentLineNumber++; + DtParseLine (Gbl_CurrentLineBuffer, Line, Offset); + + Offset = (UINT32) ftell (Handle); + } + + return (Gbl_FieldList); +} + + +/* + * Output functions + */ + + +/****************************************************************************** + * + * FUNCTION: DtWriteBinary + * + * PARAMETERS: DT_WALK_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Write one subtable of a binary ACPI table + * + *****************************************************************************/ + +static void +DtWriteBinary ( + DT_SUBTABLE *Subtable, + void *Context, + void *ReturnValue) +{ + + FlWriteFile (ASL_FILE_AML_OUTPUT, Subtable->Buffer, Subtable->Length); +} + + +/****************************************************************************** + * + * FUNCTION: DtOutputBinary + * + * PARAMETERS: + * + * RETURN: Status + * + * DESCRIPTION: Write entire binary ACPI table (result of compilation) + * + *****************************************************************************/ + +void +DtOutputBinary ( + DT_SUBTABLE *RootTable) +{ + + if (!RootTable) + { + return; + } + + /* Walk the entire parse tree, emitting the binary data */ + + DtWalkTableTree (RootTable, DtWriteBinary, NULL, NULL); + Gbl_TableLength = DtGetFileSize (Gbl_Files[ASL_FILE_AML_OUTPUT].Handle); +} |