/******************************************************************************
*
* Module Name: extrace - Support for interpreter execution tracing
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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 "acpi.h"
#include "accommon.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME ("extrace")
static ACPI_OPERAND_OBJECT *AcpiGbl_TraceMethodObject = NULL;
/* Local prototypes */
#ifdef ACPI_DEBUG_OUTPUT
static const char *
AcpiExGetTraceEventName (
ACPI_TRACE_EVENT_TYPE Type);
#endif
/*******************************************************************************
*
* FUNCTION: AcpiExInterpreterTraceEnabled
*
* PARAMETERS: Name - Whether method name should be matched,
* this should be checked before starting
* the tracer
*
* RETURN: TRUE if interpreter trace is enabled.
*
* DESCRIPTION: Check whether interpreter trace is enabled
*
******************************************************************************/
static BOOLEAN
AcpiExInterpreterTraceEnabled (
char *Name)
{
/* Check if tracing is enabled */
if (!(AcpiGbl_TraceFlags & ACPI_TRACE_ENABLED))
{
return (FALSE);
}
/*
* Check if tracing is filtered:
*
* 1. If the tracer is started, AcpiGbl_TraceMethodObject should have
* been filled by the trace starter
* 2. If the tracer is not started, AcpiGbl_TraceMethodName should be
* matched if it is specified
* 3. If the tracer is oneshot style, AcpiGbl_TraceMethodName should
* not be cleared by the trace stopper during the first match
*/
if (AcpiGbl_TraceMethodObject)
{
return (TRUE);
}
if (Name &&
(AcpiGbl_TraceMethodName &&
strcmp (AcpiGbl_TraceMethodName, Name)))
{
return (FALSE);
}
if ((AcpiGbl_TraceFlags & ACPI_TRACE_ONESHOT) &&
!AcpiGbl_TraceMethodName)
{
return (FALSE);
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: AcpiExGetTraceEventName
*
* PARAMETERS: Type - Trace event type
*
* RETURN: Trace event name.
*
* DESCRIPTION: Used to obtain the full trace event name.
*
******************************************************************************/
#ifdef ACPI_DEBUG_OUTPUT
static const char *
AcpiExGetTraceEventName (
ACPI_TRACE_EVENT_TYPE Type)
{
switch (Type)
{
case ACPI_TRACE_AML_METHOD:
return "Method";
case ACPI_TRACE_AML_OPCODE:
return "Opcode";
case ACPI_TRACE_AML_REGION:
return "Region";
default:
return "";
}
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiExTracePoint
*
* PARAMETERS: Type - Trace event type
* Begin - TRUE if before execution
* Aml - Executed AML address
* Pathname - Object path
*
* RETURN: None
*
* DESCRIPTION: Internal interpreter execution trace.
*
******************************************************************************/
void
AcpiExTracePoint (
ACPI_TRACE_EVENT_TYPE Type,
BOOLEAN Begin,
UINT8 *Aml,
char *Pathname)
{
ACPI_FUNCTION_NAME (ExTracePoint);
if (Pathname)
{
ACPI_DEBUG_PRINT ((ACPI_DB_TRACE_POINT,
"%s %s [0x%p:%s] execution.\n",
AcpiExGetTraceEventName (Type), Begin ? "Begin" : "End",
Aml, Pathname));
}
else
{
ACPI_DEBUG_PRINT ((ACPI_DB_TRACE_POINT,
"%s %s [0x%p] execution.\n",
AcpiExGetTraceEventName (Type), Begin ? "Begin" : "End",
Aml));
}
}
/*******************************************************************************
*
* FUNCTION: AcpiExStartTraceMethod
*
* PARAMETERS: MethodNode - Node of the method
* ObjDesc - The method object
* WalkState - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Start control method execution trace
*
******************************************************************************/
void
AcpiExStartTraceMethod (
ACPI_NAMESPACE_NODE *MethodNode,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_WALK_STATE *WalkState)
{
char *Pathname = NULL;
BOOLEAN Enabled = FALSE;
ACPI_FUNCTION_NAME (ExStartTraceMethod);
if (MethodNode)
{
Pathname = AcpiNsGetNormalizedPathname (MethodNode, TRUE);
}
Enabled = AcpiExInterpreterTraceEnabled (Pathname);
if (Enabled && !AcpiGbl_TraceMethodObject)
{
AcpiGbl_TraceMethodObject = ObjDesc;
AcpiGbl_OriginalDbgLevel = AcpiDbgLevel;
AcpiGbl_OriginalDbgLayer = AcpiDbgLayer;
AcpiDbgLevel = ACPI_TRACE_LEVEL_ALL;
AcpiDbgLayer = ACPI_TRACE_LAYER_ALL;
if (AcpiGbl_TraceDbgLevel)
{
AcpiDbgLevel = AcpiGbl_TraceDbgLevel;
}
if (AcpiGbl_TraceDbgLayer)
{
AcpiDbgLayer = AcpiGbl_TraceDbgLayer;
}
}
if (Enabled)
{
ACPI_TRACE_POINT (ACPI_TRACE_AML_METHOD, TRUE,
ObjDesc ? ObjDesc->Method.AmlStart : NULL, Pathname);
}
if (Pathname)
{
ACPI_FREE (Pathname);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiExStopTraceMethod
*
* PARAMETERS: MethodNode - Node of the method
* ObjDesc - The method object
* WalkState - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Stop control method execution trace
*
******************************************************************************/
void
AcpiExStopTraceMethod (
ACPI_NAMESPACE_NODE *MethodNode,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_WALK_STATE *WalkState)
{
char *Pathname = NULL;
BOOLEAN Enabled;
ACPI_FUNCTION_NAME (ExStopTraceMethod);
if (MethodNode)
{
Pathname = AcpiNsGetNormalizedPathname (MethodNode, TRUE);
}
Enabled = AcpiExInterpreterTraceEnabled (NULL);
if (Enabled)
{
ACPI_TRACE_POINT (ACPI_TRACE_AML_METHOD, FALSE,
ObjDesc ? ObjDesc->Method.AmlStart : NULL, Pathname);
}
/* Check whether the tracer should be stopped */
if (AcpiGbl_TraceMethodObject == ObjDesc)
{
/* Disable further tracing if type is one-shot */
if (AcpiGbl_TraceFlags & ACPI_TRACE_ONESHOT)
{
AcpiGbl_TraceMethodName = NULL;
}
AcpiDbgLevel = AcpiGbl_OriginalDbgLevel;
AcpiDbgLayer = AcpiGbl_OriginalDbgLayer;
AcpiGbl_TraceMethodObject = NULL;
}
if (Pathname)
{
ACPI_FREE (Pathname);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiExStartTraceOpcode
*
* PARAMETERS: Op - The parser opcode object
* WalkState - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Start opcode execution trace
*
******************************************************************************/
void
AcpiExStartTraceOpcode (
ACPI_PARSE_OBJECT *Op,
ACPI_WALK_STATE *WalkState)
{
ACPI_FUNCTION_NAME (ExStartTraceOpcode);
if (AcpiExInterpreterTraceEnabled (NULL) &&
(AcpiGbl_TraceFlags & ACPI_TRACE_OPCODE))
{
ACPI_TRACE_POINT (ACPI_TRACE_AML_OPCODE, TRUE,
Op->Common.Aml, Op->Common.AmlOpName);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiExStopTraceOpcode
*
* PARAMETERS: Op - The parser opcode object
* WalkState - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Stop opcode execution trace
*
******************************************************************************/
void
AcpiExStopTraceOpcode (
ACPI_PARSE_OBJECT *Op,
ACPI_WALK_STATE *WalkState)
{
ACPI_FUNCTION_NAME (ExStopTraceOpcode);
if (AcpiExInterpreterTraceEnabled (NULL) &&
(AcpiGbl_TraceFlags & ACPI_TRACE_OPCODE))
{
ACPI_TRACE_POINT (ACPI_TRACE_AML_OPCODE, FALSE,
Op->Common.Aml, Op->Common.AmlOpName);
}
}