xref: /freebsd/sys/contrib/dev/acpica/components/executer/extrace.c (revision c7d813a93eeb447470734c9bc0c140d90a54c271)
1 /******************************************************************************
2  *
3  * Module Name: extrace - Support for interpreter execution tracing
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2017, Intel Corp.
12  * All rights reserved.
13  *
14  * 2. License
15  *
16  * 2.1. This is your license from Intel Corp. under its intellectual property
17  * rights. You may have additional license terms from the party that provided
18  * you this software, covering your right to use that party's intellectual
19  * property rights.
20  *
21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22  * copy of the source code appearing in this file ("Covered Code") an
23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24  * base code distributed originally by Intel ("Original Intel Code") to copy,
25  * make derivatives, distribute, use and display any portion of the Covered
26  * Code in any form, with the right to sublicense such rights; and
27  *
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29  * license (with the right to sublicense), under only those claims of Intel
30  * patents that are infringed by the Original Intel Code, to make, use, sell,
31  * offer to sell, and import the Covered Code and derivative works thereof
32  * solely to the minimum extent necessary to exercise the above copyright
33  * license, and in no event shall the patent license extend to any additions
34  * to or modifications of the Original Intel Code. No other license or right
35  * is granted directly or by implication, estoppel or otherwise;
36  *
37  * The above copyright and patent license is granted only if the following
38  * conditions are met:
39  *
40  * 3. Conditions
41  *
42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43  * Redistribution of source code of any substantial portion of the Covered
44  * Code or modification with rights to further distribute source must include
45  * the above Copyright Notice, the above License, this list of Conditions,
46  * and the following Disclaimer and Export Compliance provision. In addition,
47  * Licensee must cause all Covered Code to which Licensee contributes to
48  * contain a file documenting the changes Licensee made to create that Covered
49  * Code and the date of any change. Licensee must include in that file the
50  * documentation of any changes made by any predecessor Licensee. Licensee
51  * must include a prominent statement that the modification is derived,
52  * directly or indirectly, from Original Intel Code.
53  *
54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55  * Redistribution of source code of any substantial portion of the Covered
56  * Code or modification without rights to further distribute source must
57  * include the following Disclaimer and Export Compliance provision in the
58  * documentation and/or other materials provided with distribution. In
59  * addition, Licensee may not authorize further sublicense of source of any
60  * portion of the Covered Code, and must include terms to the effect that the
61  * license from Licensee to its licensee is limited to the intellectual
62  * property embodied in the software Licensee provides to its licensee, and
63  * not to intellectual property embodied in modifications its licensee may
64  * make.
65  *
66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67  * substantial portion of the Covered Code or modification must reproduce the
68  * above Copyright Notice, and the following Disclaimer and Export Compliance
69  * provision in the documentation and/or other materials provided with the
70  * distribution.
71  *
72  * 3.4. Intel retains all right, title, and interest in and to the Original
73  * Intel Code.
74  *
75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76  * Intel shall be used in advertising or otherwise to promote the sale, use or
77  * other dealings in products derived from or relating to the Covered Code
78  * without prior written authorization from Intel.
79  *
80  * 4. Disclaimer and Export Compliance
81  *
82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88  * PARTICULAR PURPOSE.
89  *
90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97  * LIMITED REMEDY.
98  *
99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100  * software or system incorporating such software without first obtaining any
101  * required license or other approval from the U. S. Department of Commerce or
102  * any other agency or department of the United States Government. In the
103  * event Licensee exports any such software from the United States or
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108  * any of its subsidiaries will export/re-export any technical data, process,
109  * software, or service, directly or indirectly, to any country for which the
110  * United States government or any agency thereof requires an export license,
111  * other governmental approval, or letter of assurance, without first obtaining
112  * such license, approval or letter.
113  *
114  *****************************************************************************
115  *
116  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include <contrib/dev/acpica/include/acpi.h>
153 #include <contrib/dev/acpica/include/accommon.h>
154 #include <contrib/dev/acpica/include/acnamesp.h>
155 #include <contrib/dev/acpica/include/acinterp.h>
156 
157 
158 #define _COMPONENT          ACPI_EXECUTER
159         ACPI_MODULE_NAME    ("extrace")
160 
161 
162 static ACPI_OPERAND_OBJECT  *AcpiGbl_TraceMethodObject = NULL;
163 
164 /* Local prototypes */
165 
166 #ifdef ACPI_DEBUG_OUTPUT
167 static const char *
168 AcpiExGetTraceEventName (
169     ACPI_TRACE_EVENT_TYPE   Type);
170 #endif
171 
172 
173 /*******************************************************************************
174  *
175  * FUNCTION:    AcpiExInterpreterTraceEnabled
176  *
177  * PARAMETERS:  Name                - Whether method name should be matched,
178  *                                    this should be checked before starting
179  *                                    the tracer
180  *
181  * RETURN:      TRUE if interpreter trace is enabled.
182  *
183  * DESCRIPTION: Check whether interpreter trace is enabled
184  *
185  ******************************************************************************/
186 
187 static BOOLEAN
188 AcpiExInterpreterTraceEnabled (
189     char                    *Name)
190 {
191 
192     /* Check if tracing is enabled */
193 
194     if (!(AcpiGbl_TraceFlags & ACPI_TRACE_ENABLED))
195     {
196         return (FALSE);
197     }
198 
199     /*
200      * Check if tracing is filtered:
201      *
202      * 1. If the tracer is started, AcpiGbl_TraceMethodObject should have
203      *    been filled by the trace starter
204      * 2. If the tracer is not started, AcpiGbl_TraceMethodName should be
205      *    matched if it is specified
206      * 3. If the tracer is oneshot style, AcpiGbl_TraceMethodName should
207      *    not be cleared by the trace stopper during the first match
208      */
209     if (AcpiGbl_TraceMethodObject)
210     {
211         return (TRUE);
212     }
213 
214     if (Name &&
215         (AcpiGbl_TraceMethodName &&
216          strcmp (AcpiGbl_TraceMethodName, Name)))
217     {
218         return (FALSE);
219     }
220 
221     if ((AcpiGbl_TraceFlags & ACPI_TRACE_ONESHOT) &&
222         !AcpiGbl_TraceMethodName)
223     {
224         return (FALSE);
225     }
226 
227     return (TRUE);
228 }
229 
230 
231 /*******************************************************************************
232  *
233  * FUNCTION:    AcpiExGetTraceEventName
234  *
235  * PARAMETERS:  Type            - Trace event type
236  *
237  * RETURN:      Trace event name.
238  *
239  * DESCRIPTION: Used to obtain the full trace event name.
240  *
241  ******************************************************************************/
242 
243 #ifdef ACPI_DEBUG_OUTPUT
244 
245 static const char *
246 AcpiExGetTraceEventName (
247     ACPI_TRACE_EVENT_TYPE   Type)
248 {
249 
250     switch (Type)
251     {
252     case ACPI_TRACE_AML_METHOD:
253 
254         return "Method";
255 
256     case ACPI_TRACE_AML_OPCODE:
257 
258         return "Opcode";
259 
260     case ACPI_TRACE_AML_REGION:
261 
262         return "Region";
263 
264     default:
265 
266         return "";
267     }
268 }
269 
270 #endif
271 
272 
273 /*******************************************************************************
274  *
275  * FUNCTION:    AcpiExTracePoint
276  *
277  * PARAMETERS:  Type                - Trace event type
278  *              Begin               - TRUE if before execution
279  *              Aml                 - Executed AML address
280  *              Pathname            - Object path
281  *
282  * RETURN:      None
283  *
284  * DESCRIPTION: Internal interpreter execution trace.
285  *
286  ******************************************************************************/
287 
288 void
289 AcpiExTracePoint (
290     ACPI_TRACE_EVENT_TYPE   Type,
291     BOOLEAN                 Begin,
292     UINT8                   *Aml,
293     char                    *Pathname)
294 {
295 
296     ACPI_FUNCTION_NAME (ExTracePoint);
297 
298 
299     if (Pathname)
300     {
301         ACPI_DEBUG_PRINT ((ACPI_DB_TRACE_POINT,
302             "%s %s [0x%p:%s] execution.\n",
303             AcpiExGetTraceEventName (Type), Begin ? "Begin" : "End",
304             Aml, Pathname));
305     }
306     else
307     {
308         ACPI_DEBUG_PRINT ((ACPI_DB_TRACE_POINT,
309             "%s %s [0x%p] execution.\n",
310             AcpiExGetTraceEventName (Type), Begin ? "Begin" : "End",
311             Aml));
312     }
313 }
314 
315 
316 /*******************************************************************************
317  *
318  * FUNCTION:    AcpiExStartTraceMethod
319  *
320  * PARAMETERS:  MethodNode          - Node of the method
321  *              ObjDesc             - The method object
322  *              WalkState           - current state, NULL if not yet executing
323  *                                    a method.
324  *
325  * RETURN:      None
326  *
327  * DESCRIPTION: Start control method execution trace
328  *
329  ******************************************************************************/
330 
331 void
332 AcpiExStartTraceMethod (
333     ACPI_NAMESPACE_NODE     *MethodNode,
334     ACPI_OPERAND_OBJECT     *ObjDesc,
335     ACPI_WALK_STATE         *WalkState)
336 {
337     char                    *Pathname = NULL;
338     BOOLEAN                 Enabled = FALSE;
339 
340 
341     ACPI_FUNCTION_NAME (ExStartTraceMethod);
342 
343 
344     if (MethodNode)
345     {
346         Pathname = AcpiNsGetNormalizedPathname (MethodNode, TRUE);
347     }
348 
349     Enabled = AcpiExInterpreterTraceEnabled (Pathname);
350     if (Enabled && !AcpiGbl_TraceMethodObject)
351     {
352         AcpiGbl_TraceMethodObject = ObjDesc;
353         AcpiGbl_OriginalDbgLevel = AcpiDbgLevel;
354         AcpiGbl_OriginalDbgLayer = AcpiDbgLayer;
355         AcpiDbgLevel = ACPI_TRACE_LEVEL_ALL;
356         AcpiDbgLayer = ACPI_TRACE_LAYER_ALL;
357 
358         if (AcpiGbl_TraceDbgLevel)
359         {
360             AcpiDbgLevel = AcpiGbl_TraceDbgLevel;
361         }
362 
363         if (AcpiGbl_TraceDbgLayer)
364         {
365             AcpiDbgLayer = AcpiGbl_TraceDbgLayer;
366         }
367     }
368 
369     if (Enabled)
370     {
371         ACPI_TRACE_POINT (ACPI_TRACE_AML_METHOD, TRUE,
372             ObjDesc ? ObjDesc->Method.AmlStart : NULL, Pathname);
373     }
374 
375     if (Pathname)
376     {
377         ACPI_FREE (Pathname);
378     }
379 }
380 
381 
382 /*******************************************************************************
383  *
384  * FUNCTION:    AcpiExStopTraceMethod
385  *
386  * PARAMETERS:  MethodNode          - Node of the method
387  *              ObjDesc             - The method object
388  *              WalkState           - current state, NULL if not yet executing
389  *                                    a method.
390  *
391  * RETURN:      None
392  *
393  * DESCRIPTION: Stop control method execution trace
394  *
395  ******************************************************************************/
396 
397 void
398 AcpiExStopTraceMethod (
399     ACPI_NAMESPACE_NODE     *MethodNode,
400     ACPI_OPERAND_OBJECT     *ObjDesc,
401     ACPI_WALK_STATE         *WalkState)
402 {
403     char                    *Pathname = NULL;
404     BOOLEAN                 Enabled;
405 
406 
407     ACPI_FUNCTION_NAME (ExStopTraceMethod);
408 
409 
410     if (MethodNode)
411     {
412         Pathname = AcpiNsGetNormalizedPathname (MethodNode, TRUE);
413     }
414 
415     Enabled = AcpiExInterpreterTraceEnabled (NULL);
416 
417     if (Enabled)
418     {
419         ACPI_TRACE_POINT (ACPI_TRACE_AML_METHOD, FALSE,
420             ObjDesc ? ObjDesc->Method.AmlStart : NULL, Pathname);
421     }
422 
423     /* Check whether the tracer should be stopped */
424 
425     if (AcpiGbl_TraceMethodObject == ObjDesc)
426     {
427         /* Disable further tracing if type is one-shot */
428 
429         if (AcpiGbl_TraceFlags & ACPI_TRACE_ONESHOT)
430         {
431             AcpiGbl_TraceMethodName = NULL;
432         }
433 
434         AcpiDbgLevel = AcpiGbl_OriginalDbgLevel;
435         AcpiDbgLayer = AcpiGbl_OriginalDbgLayer;
436         AcpiGbl_TraceMethodObject = NULL;
437     }
438 
439     if (Pathname)
440     {
441         ACPI_FREE (Pathname);
442     }
443 }
444 
445 
446 /*******************************************************************************
447  *
448  * FUNCTION:    AcpiExStartTraceOpcode
449  *
450  * PARAMETERS:  Op                  - The parser opcode object
451  *              WalkState           - current state, NULL if not yet executing
452  *                                    a method.
453  *
454  * RETURN:      None
455  *
456  * DESCRIPTION: Start opcode execution trace
457  *
458  ******************************************************************************/
459 
460 void
461 AcpiExStartTraceOpcode (
462     ACPI_PARSE_OBJECT       *Op,
463     ACPI_WALK_STATE         *WalkState)
464 {
465 
466     ACPI_FUNCTION_NAME (ExStartTraceOpcode);
467 
468 
469     if (AcpiExInterpreterTraceEnabled (NULL) &&
470         (AcpiGbl_TraceFlags & ACPI_TRACE_OPCODE))
471     {
472         ACPI_TRACE_POINT (ACPI_TRACE_AML_OPCODE, TRUE,
473             Op->Common.Aml, Op->Common.AmlOpName);
474     }
475 }
476 
477 
478 /*******************************************************************************
479  *
480  * FUNCTION:    AcpiExStopTraceOpcode
481  *
482  * PARAMETERS:  Op                  - The parser opcode object
483  *              WalkState           - current state, NULL if not yet executing
484  *                                    a method.
485  *
486  * RETURN:      None
487  *
488  * DESCRIPTION: Stop opcode execution trace
489  *
490  ******************************************************************************/
491 
492 void
493 AcpiExStopTraceOpcode (
494     ACPI_PARSE_OBJECT       *Op,
495     ACPI_WALK_STATE         *WalkState)
496 {
497 
498     ACPI_FUNCTION_NAME (ExStopTraceOpcode);
499 
500 
501     if (AcpiExInterpreterTraceEnabled (NULL) &&
502         (AcpiGbl_TraceFlags & ACPI_TRACE_OPCODE))
503     {
504         ACPI_TRACE_POINT (ACPI_TRACE_AML_OPCODE, FALSE,
505             Op->Common.Aml, Op->Common.AmlOpName);
506     }
507 }
508