1 /******************************************************************************
3 * Module Name: dtio.c - File I/O support for data table compiler
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2013, Intel Corp.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
46 #include "aslcompiler.h"
47 #include "dtcompiler.h"
49 #define _COMPONENT DT_COMPILER
50 ACPI_MODULE_NAME ("dtio")
53 /* Local prototypes */
71 DT_SUBTABLE
*Subtable
,
84 DT_SUBTABLE
*Subtable
,
90 DT_SUBTABLE
*Subtable
,
95 /* States for DtGetNextLine */
97 #define DT_NORMAL_TEXT 0
98 #define DT_START_QUOTED_STRING 1
99 #define DT_START_COMMENT 2
100 #define DT_SLASH_ASTERISK_COMMENT 3
101 #define DT_SLASH_SLASH_COMMENT 4
102 #define DT_END_COMMENT 5
103 #define DT_MERGE_LINES 6
104 #define DT_ESCAPE_SEQUENCE 7
106 static UINT32 Gbl_NextLineOffset
;
109 /******************************************************************************
113 * PARAMETERS: String - Current source code line to trim
115 * RETURN: Trimmed line. Must be freed by caller.
117 * DESCRIPTION: Trim left and right spaces
119 *****************************************************************************/
131 /* Skip lines that start with a space */
133 if (!ACPI_STRCMP (String
, " "))
135 ReturnString
= UtLocalCalloc (1);
136 return (ReturnString
);
139 /* Setup pointers to start and end of input string */
142 End
= String
+ ACPI_STRLEN (String
) - 1;
144 /* Find first non-whitespace character */
146 while ((Start
<= End
) && ((*Start
== ' ') || (*Start
== '\t')))
151 /* Find last non-space character */
155 if (*End
== '\r' || *End
== '\n')
169 /* Remove any quotes around the string */
180 /* Create the trimmed return string */
182 Length
= ACPI_PTR_DIFF (End
, Start
) + 1;
183 ReturnString
= UtLocalCalloc (Length
+ 1);
184 if (ACPI_STRLEN (Start
))
186 ACPI_STRNCPY (ReturnString
, Start
, Length
);
189 ReturnString
[Length
] = 0;
190 return (ReturnString
);
194 /******************************************************************************
196 * FUNCTION: DtLinkField
198 * PARAMETERS: Field - New field object to link
202 * DESCRIPTION: Link one field name and value to the list
204 *****************************************************************************/
214 Prev
= Next
= Gbl_FieldList
;
228 Gbl_FieldList
= Field
;
233 /******************************************************************************
235 * FUNCTION: DtParseLine
237 * PARAMETERS: LineBuffer - Current source code line
238 * Line - Current line number in the source
239 * Offset - Current byte offset of the line
243 * DESCRIPTION: Parse one source line
245 *****************************************************************************/
264 BOOLEAN IsNullString
= FALSE
;
272 /* All lines after "Raw Table Data" are ingored */
274 if (strstr (LineBuffer
, ACPI_RAW_TABLE_DATA_HEADER
))
276 return (AE_NOT_FOUND
);
279 Colon
= strchr (LineBuffer
, ':');
288 while (Start
< Colon
)
292 /* Found left bracket, go to the right bracket */
294 while (Start
< Colon
&& *Start
!= ']')
299 else if (*Start
!= ' ')
308 * There are two column values. One for the field name,
309 * and one for the field value.
311 Column
= ACPI_PTR_DIFF (Colon
, LineBuffer
) + 3;
312 NameColumn
= ACPI_PTR_DIFF (Start
, LineBuffer
) + 1;
314 Length
= ACPI_PTR_DIFF (End
, Start
);
316 TmpName
= UtLocalCalloc (Length
+ 1);
317 ACPI_STRNCPY (TmpName
, Start
, Length
);
318 Name
= DtTrim (TmpName
);
321 Start
= End
= (Colon
+ 1);
324 /* Found left quotation, go to the right quotation and break */
330 /* Check for an explicit null string */
336 while (*End
&& (*End
!= '"'))
346 * Special "comment" fields at line end, ignore them.
347 * Note: normal slash-slash and slash-asterisk comments are
348 * stripped already by the DtGetNextLine parser.
350 * TBD: Perhaps DtGetNextLine should parse the following type
361 Length
= ACPI_PTR_DIFF (End
, Start
);
362 TmpValue
= UtLocalCalloc (Length
+ 1);
364 ACPI_STRNCPY (TmpValue
, Start
, Length
);
365 Value
= DtTrim (TmpValue
);
366 ACPI_FREE (TmpValue
);
368 /* Create a new field object only if we have a valid value field */
370 if ((Value
&& *Value
) || IsNullString
)
372 Field
= UtLocalCalloc (sizeof (DT_FIELD
));
374 Field
->Value
= Value
;
376 Field
->ByteOffset
= Offset
;
377 Field
->NameColumn
= NameColumn
;
378 Field
->Column
= Column
;
382 else /* Ignore this field, it has no valid data */
392 /******************************************************************************
394 * FUNCTION: DtGetNextLine
396 * PARAMETERS: Handle - Open file handle for the source file
398 * RETURN: Filled line buffer and offset of start-of-line (ASL_EOF on EOF)
400 * DESCRIPTION: Get the next valid source line. Removes all comments.
401 * Ignores empty lines.
403 * Handles both slash-asterisk and slash-slash comments.
404 * Also, quoted strings, but no escapes within.
406 * Line is returned in Gbl_CurrentLineBuffer.
407 * Line number in original file is returned in Gbl_CurrentLineNumber.
409 *****************************************************************************/
415 BOOLEAN LineNotAllBlanks
= FALSE
;
416 UINT32 State
= DT_NORMAL_TEXT
;
417 UINT32 CurrentLineOffset
;
425 * If line is too long, expand the line buffers. Also increases
426 * Gbl_LineBufferSize.
428 if (i
>= Gbl_LineBufferSize
)
430 UtExpandLineBuffers ();
438 case DT_START_QUOTED_STRING
:
439 case DT_SLASH_ASTERISK_COMMENT
:
441 AcpiOsPrintf ("**** EOF within comment/string %u\n", State
);
449 /* Standalone EOF is OK */
457 * Received an EOF in the middle of a line. Terminate the
458 * line with a newline. The next call to this function will
459 * return a standalone EOF. Thus, the upper parsing software
460 * never has to deal with an EOF within a valid line (or
461 * the last line does not get tossed on the floor.)
464 State
= DT_NORMAL_TEXT
;
471 /* Normal text, insert char into line buffer */
473 Gbl_CurrentLineBuffer
[i
] = (char) c
;
478 State
= DT_START_COMMENT
;
483 State
= DT_START_QUOTED_STRING
;
484 LineNotAllBlanks
= TRUE
;
490 * The continuation char MUST be last char on this line.
491 * Otherwise, it will be assumed to be a valid ASL char.
493 State
= DT_MERGE_LINES
;
498 CurrentLineOffset
= Gbl_NextLineOffset
;
499 Gbl_NextLineOffset
= (UINT32
) ftell (Handle
);
500 Gbl_CurrentLineNumber
++;
503 * Exit if line is complete. Ignore empty lines (only \n)
504 * or lines that contain nothing but blanks.
506 if ((i
!= 0) && LineNotAllBlanks
)
508 if ((i
+ 1) >= Gbl_LineBufferSize
)
510 UtExpandLineBuffers ();
513 Gbl_CurrentLineBuffer
[i
+1] = 0; /* Terminate string */
514 return (CurrentLineOffset
);
517 /* Toss this line and start a new one */
520 LineNotAllBlanks
= FALSE
;
527 LineNotAllBlanks
= TRUE
;
535 case DT_START_QUOTED_STRING
:
537 /* Insert raw chars until end of quoted string */
539 Gbl_CurrentLineBuffer
[i
] = (char) c
;
546 State
= DT_NORMAL_TEXT
;
551 State
= DT_ESCAPE_SEQUENCE
;
556 AcpiOsPrintf ("ERROR at line %u: Unterminated quoted string\n",
557 Gbl_CurrentLineNumber
++);
558 State
= DT_NORMAL_TEXT
;
561 default: /* Get next character */
567 case DT_ESCAPE_SEQUENCE
:
569 /* Just copy the escaped character. TBD: sufficient for table compiler? */
571 Gbl_CurrentLineBuffer
[i
] = (char) c
;
573 State
= DT_START_QUOTED_STRING
;
576 case DT_START_COMMENT
:
578 /* Open comment if this character is an asterisk or slash */
584 State
= DT_SLASH_ASTERISK_COMMENT
;
589 State
= DT_SLASH_SLASH_COMMENT
;
592 default: /* Not a comment */
594 i
++; /* Save the preceding slash */
595 if (i
>= Gbl_LineBufferSize
)
597 UtExpandLineBuffers ();
600 Gbl_CurrentLineBuffer
[i
] = (char) c
;
602 State
= DT_NORMAL_TEXT
;
607 case DT_SLASH_ASTERISK_COMMENT
:
609 /* Ignore chars until an asterisk-slash is found */
615 Gbl_NextLineOffset
= (UINT32
) ftell (Handle
);
616 Gbl_CurrentLineNumber
++;
621 State
= DT_END_COMMENT
;
630 case DT_SLASH_SLASH_COMMENT
:
632 /* Ignore chars until end-of-line */
636 /* We will exit via the NORMAL_TEXT path */
639 State
= DT_NORMAL_TEXT
;
645 /* End comment if this char is a slash */
651 State
= DT_NORMAL_TEXT
;
656 CurrentLineOffset
= Gbl_NextLineOffset
;
657 Gbl_NextLineOffset
= (UINT32
) ftell (Handle
);
658 Gbl_CurrentLineNumber
++;
663 /* Consume all adjacent asterisks */
668 State
= DT_SLASH_ASTERISK_COMMENT
;
678 * This is not a continuation backslash, it is a normal
679 * normal ASL backslash - for example: Scope(\_SB_)
681 i
++; /* Keep the backslash that is already in the buffer */
684 State
= DT_NORMAL_TEXT
;
689 * This is a continuation line -- a backlash followed
690 * immediately by a newline. Insert a space between the
691 * lines (overwrite the backslash)
693 Gbl_CurrentLineBuffer
[i
] = ' ';
696 /* Ignore newline, this will merge the lines */
698 CurrentLineOffset
= Gbl_NextLineOffset
;
699 Gbl_NextLineOffset
= (UINT32
) ftell (Handle
);
700 Gbl_CurrentLineNumber
++;
701 State
= DT_NORMAL_TEXT
;
707 DtFatal (ASL_MSG_COMPILER_INTERNAL
, NULL
, "Unknown input state");
714 /******************************************************************************
716 * FUNCTION: DtScanFile
718 * PARAMETERS: Handle - Open file handle for the source file
720 * RETURN: Pointer to start of the constructed parse tree.
722 * DESCRIPTION: Scan source file, link all field names and values
723 * to the global parse tree: Gbl_FieldList
725 *****************************************************************************/
735 ACPI_FUNCTION_NAME (DtScanFile
);
738 /* Get the file size */
740 Gbl_InputByteCount
= DtGetFileSize (Handle
);
742 Gbl_CurrentLineNumber
= 0;
743 Gbl_CurrentLineOffset
= 0;
744 Gbl_NextLineOffset
= 0;
746 /* Scan line-by-line */
748 while ((Offset
= DtGetNextLine (Handle
)) != ASL_EOF
)
750 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
, "Line %2.2u/%4.4X - %s",
751 Gbl_CurrentLineNumber
, Offset
, Gbl_CurrentLineBuffer
));
753 Status
= DtParseLine (Gbl_CurrentLineBuffer
, Gbl_CurrentLineNumber
, Offset
);
754 if (Status
== AE_NOT_FOUND
)
760 /* Dump the parse tree if debug enabled */
762 DtDumpFieldList (Gbl_FieldList
);
763 return (Gbl_FieldList
);
771 /******************************************************************************
773 * FUNCTION: DtWriteBinary
775 * PARAMETERS: DT_WALK_CALLBACK
779 * DESCRIPTION: Write one subtable of a binary ACPI table
781 *****************************************************************************/
785 DT_SUBTABLE
*Subtable
,
790 FlWriteFile (ASL_FILE_AML_OUTPUT
, Subtable
->Buffer
, Subtable
->Length
);
794 /******************************************************************************
796 * FUNCTION: DtOutputBinary
802 * DESCRIPTION: Write entire binary ACPI table (result of compilation)
804 *****************************************************************************/
808 DT_SUBTABLE
*RootTable
)
816 /* Walk the entire parse tree, emitting the binary data */
818 DtWalkTableTree (RootTable
, DtWriteBinary
, NULL
, NULL
);
819 Gbl_TableLength
= DtGetFileSize (Gbl_Files
[ASL_FILE_AML_OUTPUT
].Handle
);
827 /******************************************************************************
829 * FUNCTION: DtDumpBuffer
831 * PARAMETERS: FileID - Where to write buffer data
832 * Buffer - Buffer to dump
833 * Offset - Offset in current table
834 * Length - Buffer Length
838 * DESCRIPTION: Another copy of DumpBuffer routine (unfortunately).
840 * TBD: merge dump buffer routines
842 *****************************************************************************/
856 FlPrintFile (FileId
, "Output: [%3.3Xh %4.4d %3d] ",
857 Offset
, Offset
, Length
);
864 FlPrintFile (FileId
, "%24s", "");
867 /* Print 16 hex chars */
873 /* Dump fill spaces */
875 FlPrintFile (FileId
, " ");
880 FlPrintFile (FileId
, "%02X ", Buffer
[i
+j
]);
884 FlPrintFile (FileId
, " ");
885 for (j
= 0; j
< 16; j
++)
889 FlPrintFile (FileId
, "\n\n");
893 BufChar
= Buffer
[(ACPI_SIZE
) i
+ j
];
894 if (ACPI_IS_PRINT (BufChar
))
896 FlPrintFile (FileId
, "%c", BufChar
);
900 FlPrintFile (FileId
, ".");
904 /* Done with that line. */
906 FlPrintFile (FileId
, "\n");
910 FlPrintFile (FileId
, "\n\n");
914 /******************************************************************************
916 * FUNCTION: DtDumpFieldList
918 * PARAMETERS: Field - Root field
922 * DESCRIPTION: Dump the entire field list
924 *****************************************************************************/
931 if (!Gbl_DebugFlag
|| !Field
)
936 DbgPrint (ASL_DEBUG_OUTPUT
, "\nField List:\n"
937 "LineNo ByteOff NameCol Column TableOff "
938 "Flags %32s : %s\n\n", "Name", "Value");
941 DbgPrint (ASL_DEBUG_OUTPUT
,
942 "%.08X %.08X %.08X %.08X %.08X %.08X %32s : %s\n",
943 Field
->Line
, Field
->ByteOffset
, Field
->NameColumn
,
944 Field
->Column
, Field
->TableOffset
, Field
->Flags
,
945 Field
->Name
, Field
->Value
);
950 DbgPrint (ASL_DEBUG_OUTPUT
, "\n\n");
954 /******************************************************************************
956 * FUNCTION: DtDumpSubtableInfo, DtDumpSubtableTree
958 * PARAMETERS: DT_WALK_CALLBACK
962 * DESCRIPTION: Info - dump a subtable tree entry with extra information.
963 * Tree - dump a subtable tree formatted by depth indentation.
965 *****************************************************************************/
969 DT_SUBTABLE
*Subtable
,
974 DbgPrint (ASL_DEBUG_OUTPUT
,
975 "[%.04X] %.08X %.08X %.08X %.08X %.08X %p %p %p\n",
976 Subtable
->Depth
, Subtable
->Length
, Subtable
->TotalLength
,
977 Subtable
->SizeOfLengthField
, Subtable
->Flags
, Subtable
,
978 Subtable
->Parent
, Subtable
->Child
, Subtable
->Peer
);
983 DT_SUBTABLE
*Subtable
,
988 DbgPrint (ASL_DEBUG_OUTPUT
,
989 "[%.04X] %*s%08X (%.02X) - (%.02X)\n",
990 Subtable
->Depth
, (4 * Subtable
->Depth
), " ",
991 Subtable
, Subtable
->Length
, Subtable
->TotalLength
);
995 /******************************************************************************
997 * FUNCTION: DtDumpSubtableList
1003 * DESCRIPTION: Dump the raw list of subtables with information, and also
1004 * dump the subtable list in formatted tree format. Assists with
1005 * the development of new table code.
1007 *****************************************************************************/
1010 DtDumpSubtableList (
1014 if (!Gbl_DebugFlag
|| !Gbl_RootTable
)
1019 DbgPrint (ASL_DEBUG_OUTPUT
,
1021 "Depth Length TotalLen LenSize Flags "
1022 "This Parent Child Peer\n\n");
1023 DtWalkTableTree (Gbl_RootTable
, DtDumpSubtableInfo
, NULL
, NULL
);
1025 DbgPrint (ASL_DEBUG_OUTPUT
,
1026 "\nSubtable Tree: (Depth, Subtable, Length, TotalLength)\n\n");
1027 DtWalkTableTree (Gbl_RootTable
, DtDumpSubtableTree
, NULL
, NULL
);
1031 /******************************************************************************
1033 * FUNCTION: DtWriteFieldToListing
1035 * PARAMETERS: Buffer - Contains the compiled data
1036 * Field - Field node for the input line
1037 * Length - Length of the output data
1041 * DESCRIPTION: Write one field to the listing file (if listing is enabled).
1043 *****************************************************************************/
1046 DtWriteFieldToListing (
1054 if (!Gbl_ListingFlag
|| !Field
)
1059 /* Dump the original source line */
1061 FlPrintFile (ASL_FILE_LISTING_OUTPUT
, "Input: ");
1062 FlSeekFile (ASL_FILE_INPUT
, Field
->ByteOffset
);
1064 while (FlReadFile (ASL_FILE_INPUT
, &FileByte
, 1) == AE_OK
)
1066 FlWriteFile (ASL_FILE_LISTING_OUTPUT
, &FileByte
, 1);
1067 if (FileByte
== '\n')
1073 /* Dump the line as parsed and represented internally */
1075 FlPrintFile (ASL_FILE_LISTING_OUTPUT
, "Parsed: %*s : %.64s",
1076 Field
->Column
-4, Field
->Name
, Field
->Value
);
1078 if (strlen (Field
->Value
) > 64)
1080 FlPrintFile (ASL_FILE_LISTING_OUTPUT
, "...Additional data, length 0x%X\n",
1081 strlen (Field
->Value
));
1083 FlPrintFile (ASL_FILE_LISTING_OUTPUT
, "\n");
1085 /* Dump the hex data that will be output for this field */
1087 DtDumpBuffer (ASL_FILE_LISTING_OUTPUT
, Buffer
, Field
->TableOffset
, Length
);
1091 /******************************************************************************
1093 * FUNCTION: DtWriteTableToListing
1099 * DESCRIPTION: Write the entire compiled table to the listing file
1102 *****************************************************************************/
1105 DtWriteTableToListing (
1111 if (!Gbl_ListingFlag
)
1116 /* Read the entire table from the output file */
1118 Buffer
= UtLocalCalloc (Gbl_TableLength
);
1119 FlSeekFile (ASL_FILE_AML_OUTPUT
, 0);
1120 FlReadFile (ASL_FILE_AML_OUTPUT
, Buffer
, Gbl_TableLength
);
1122 /* Dump the raw table data */
1124 AcpiOsRedirectOutput (Gbl_Files
[ASL_FILE_LISTING_OUTPUT
].Handle
);
1126 AcpiOsPrintf ("\n%s: Length %d (0x%X)\n\n",
1127 ACPI_RAW_TABLE_DATA_HEADER
, Gbl_TableLength
, Gbl_TableLength
);
1128 AcpiUtDumpBuffer (Buffer
, Gbl_TableLength
, DB_BYTE_DISPLAY
, 0);
1130 AcpiOsRedirectOutput (stdout
);