1 /*******************************************************************************
3 * Module Name: dmbuffer - AML disassembler, buffer and string support
6 ******************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
119 #include "acdisasm.h"
120 #include "acparser.h"
124 #ifdef ACPI_DISASSEMBLER
126 #define _COMPONENT ACPI_CA_DEBUGGER
127 ACPI_MODULE_NAME ("dmbuffer")
129 /* Local prototypes */
133 ACPI_PARSE_OBJECT *Op);
136 /*******************************************************************************
138 * FUNCTION: AcpiDmDisasmByteList
140 * PARAMETERS: Level - Current source code indentation level
141 * ByteData - Pointer to the byte list
142 * ByteCount - Length of the byte list
146 * DESCRIPTION: Dump an AML "ByteList" in Hex format. 8 bytes per line, prefixed
147 * with the hex buffer offset.
149 ******************************************************************************/
152 AcpiDmDisasmByteList (
165 /* Dump the byte list */
167 for (i = 0; i < ByteCount; i++)
169 /* New line every 8 bytes */
171 if (((i % 8) == 0) && (i < ByteCount))
178 AcpiDmIndent (Level);
181 AcpiOsPrintf ("/* %04X */ ", i);
185 AcpiOsPrintf ("0x%2.2X", (UINT32) ByteData[i]);
187 /* Add comma if there are more bytes to display */
189 if (i < (ByteCount -1))
202 /*******************************************************************************
204 * FUNCTION: AcpiDmByteList
206 * PARAMETERS: Info - Parse tree walk info
211 * DESCRIPTION: Dump a buffer byte list, handling the various types of buffers.
212 * Buffer type must be already set in the Op DisasmOpcode.
214 ******************************************************************************/
218 ACPI_OP_WALK_INFO *Info,
219 ACPI_PARSE_OBJECT *Op)
225 ByteData = Op->Named.Data;
226 ByteCount = (UINT32) Op->Common.Value.Integer;
229 * The byte list belongs to a buffer, and can be produced by either
230 * a ResourceTemplate, Unicode, quoted string, or a plain byte list.
232 switch (Op->Common.Parent->Common.DisasmOpcode)
234 case ACPI_DASM_RESOURCE:
236 AcpiDmResourceTemplate (Info, Op->Common.Parent, ByteData, ByteCount);
239 case ACPI_DASM_STRING:
241 AcpiDmIndent (Info->Level);
242 AcpiUtPrintString ((char *) ByteData, ACPI_UINT8_MAX);
246 case ACPI_DASM_UNICODE:
251 case ACPI_DASM_BUFFER:
255 * Not a resource, string, or unicode string.
256 * Just dump the buffer
258 AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount);
264 /*******************************************************************************
266 * FUNCTION: AcpiDmIsUnicodeBuffer
268 * PARAMETERS: Op - Buffer Object to be examined
270 * RETURN: TRUE if buffer contains a UNICODE string
272 * DESCRIPTION: Determine if a buffer Op contains a Unicode string
274 ******************************************************************************/
277 AcpiDmIsUnicodeBuffer (
278 ACPI_PARSE_OBJECT *Op)
283 ACPI_PARSE_OBJECT *SizeOp;
284 ACPI_PARSE_OBJECT *NextOp;
288 /* Buffer size is the buffer argument */
290 SizeOp = Op->Common.Value.Arg;
292 /* Next, the initializer byte list to examine */
294 NextOp = SizeOp->Common.Next;
300 /* Extract the byte list info */
302 ByteData = NextOp->Named.Data;
303 ByteCount = (UINT32) NextOp->Common.Value.Integer;
304 WordCount = ACPI_DIV_2 (ByteCount);
307 * Unicode string must have an even number of bytes and last
313 ((UINT16 *) (void *) ByteData)[WordCount - 1] != 0)
318 /* For each word, 1st byte must be ascii, 2nd byte must be zero */
320 for (i = 0; i < (ByteCount - 2); i += 2)
322 if ((!ACPI_IS_PRINT (ByteData[i])) ||
323 (ByteData[i + 1] != 0))
329 /* Ignore the Size argument in the disassembly of this buffer op */
331 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
336 /*******************************************************************************
338 * FUNCTION: AcpiDmIsStringBuffer
340 * PARAMETERS: Op - Buffer Object to be examined
342 * RETURN: TRUE if buffer contains a ASCII string, FALSE otherwise
344 * DESCRIPTION: Determine if a buffer Op contains a ASCII string
346 ******************************************************************************/
349 AcpiDmIsStringBuffer (
350 ACPI_PARSE_OBJECT *Op)
354 ACPI_PARSE_OBJECT *SizeOp;
355 ACPI_PARSE_OBJECT *NextOp;
359 /* Buffer size is the buffer argument */
361 SizeOp = Op->Common.Value.Arg;
363 /* Next, the initializer byte list to examine */
365 NextOp = SizeOp->Common.Next;
371 /* Extract the byte list info */
373 ByteData = NextOp->Named.Data;
374 ByteCount = (UINT32) NextOp->Common.Value.Integer;
376 /* Last byte must be the null terminator */
380 (ByteData[ByteCount-1] != 0))
385 for (i = 0; i < (ByteCount - 1); i++)
387 /* TBD: allow some escapes (non-ascii chars).
388 * they will be handled in the string output routine
391 if (!ACPI_IS_PRINT (ByteData[i]))
401 /*******************************************************************************
403 * FUNCTION: AcpiDmUnicode
405 * PARAMETERS: Op - Byte List op containing Unicode string
409 * DESCRIPTION: Dump Unicode string as a standard ASCII string. (Remove
410 * the extra zero bytes).
412 ******************************************************************************/
416 ACPI_PARSE_OBJECT *Op)
423 /* Extract the buffer info as a WORD buffer */
425 WordData = ACPI_CAST_PTR (UINT16, Op->Named.Data);
426 WordCount = ACPI_DIV_2 (((UINT32) Op->Common.Value.Integer));
431 /* Write every other byte as an ASCII character */
433 for (i = 0; i < (WordCount - 1); i++)
435 AcpiOsPrintf ("%c", (int) WordData[i]);
438 AcpiOsPrintf ("\")");
442 /*******************************************************************************
444 * FUNCTION: AcpiDmIsEisaId
446 * PARAMETERS: Op - Op to be examined
450 * DESCRIPTION: Determine if an Op can be converted to an EisaId.
452 ******************************************************************************/
456 ACPI_PARSE_OBJECT *Op)
460 ACPI_PARSE_OBJECT *NextOp;
465 /* Get the NameSegment */
467 Name = AcpiPsGetName (Op);
473 /* We are looking for _HID */
475 if (!ACPI_COMPARE_NAME (&Name, METHOD_NAME__HID))
480 /* The parameter must be either a word or a dword */
482 NextOp = AcpiPsGetDepthNext (NULL, Op);
483 if ((NextOp->Common.AmlOpcode != AML_DWORD_OP) &&
484 (NextOp->Common.AmlOpcode != AML_WORD_OP))
489 /* Swap from little-endian to big-endian to simplify conversion */
491 BigEndianId = AcpiUtDwordByteSwap ((UINT32) NextOp->Common.Value.Integer);
493 /* Create the 3 leading ASCII letters */
495 Prefix[0] = ((BigEndianId >> 26) & 0x1F) + 0x40;
496 Prefix[1] = ((BigEndianId >> 21) & 0x1F) + 0x40;
497 Prefix[2] = ((BigEndianId >> 16) & 0x1F) + 0x40;
499 /* Verify that all 3 are ascii and alpha */
501 for (i = 0; i < 3; i++)
503 if (!ACPI_IS_ASCII (Prefix[i]) ||
504 !ACPI_IS_ALPHA (Prefix[i]))
510 /* OK - mark this node as convertable to an EISA ID */
512 NextOp->Common.DisasmOpcode = ACPI_DASM_EISAID;
516 /*******************************************************************************
518 * FUNCTION: AcpiDmEisaId
520 * PARAMETERS: EncodedId - Raw encoded EISA ID.
524 * DESCRIPTION: Convert an encoded EISAID back to the original ASCII String.
526 ******************************************************************************/
535 /* Swap from little-endian to big-endian to simplify conversion */
537 BigEndianId = AcpiUtDwordByteSwap (EncodedId);
540 /* Split to form "AAANNNN" string */
542 AcpiOsPrintf ("EisaId (\"%c%c%c%4.4X\")",
544 /* Three Alpha characters (AAA), 5 bits each */
546 (int) ((BigEndianId >> 26) & 0x1F) + 0x40,
547 (int) ((BigEndianId >> 21) & 0x1F) + 0x40,
548 (int) ((BigEndianId >> 16) & 0x1F) + 0x40,
550 /* Numeric part (NNNN) is simply the lower 16 bits */
552 (UINT32) (BigEndianId & 0xFFFF));