/******************************************************************************
 *
 * Module Name: utdebug - Debug print/trace routines
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2015, 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.
 */

#define EXPORT_ACPI_INTERFACES

#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"

#define _COMPONENT          ACPI_UTILITIES
        ACPI_MODULE_NAME    ("utdebug")


#ifdef ACPI_DEBUG_OUTPUT

static ACPI_THREAD_ID       AcpiGbl_PrevThreadId = (ACPI_THREAD_ID) 0xFFFFFFFF;
static char                 *AcpiGbl_FnEntryStr = "----Entry";
static char                 *AcpiGbl_FnExitStr  = "----Exit-";

/* Local prototypes */

static const char *
AcpiUtTrimFunctionName (
    const char              *FunctionName);


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtInitStackPtrTrace
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Save the current CPU stack pointer at subsystem startup
 *
 ******************************************************************************/

void
AcpiUtInitStackPtrTrace (
    void)
{
    ACPI_SIZE               CurrentSp;


    AcpiGbl_EntryStackPointer = &CurrentSp;
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtTrackStackPtr
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Save the current CPU stack pointer
 *
 ******************************************************************************/

void
AcpiUtTrackStackPtr (
    void)
{
    ACPI_SIZE               CurrentSp;


    if (&CurrentSp < AcpiGbl_LowestStackPointer)
    {
        AcpiGbl_LowestStackPointer = &CurrentSp;
    }

    if (AcpiGbl_NestingLevel > AcpiGbl_DeepestNesting)
    {
        AcpiGbl_DeepestNesting = AcpiGbl_NestingLevel;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtTrimFunctionName
 *
 * PARAMETERS:  FunctionName        - Ascii string containing a procedure name
 *
 * RETURN:      Updated pointer to the function name
 *
 * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
 *              This allows compiler macros such as __FUNCTION__ to be used
 *              with no change to the debug output.
 *
 ******************************************************************************/

static const char *
AcpiUtTrimFunctionName (
    const char              *FunctionName)
{

    /* All Function names are longer than 4 chars, check is safe */

    if (*(ACPI_CAST_PTR (UINT32, FunctionName)) == ACPI_PREFIX_MIXED)
    {
        /* This is the case where the original source has not been modified */

        return (FunctionName + 4);
    }

    if (*(ACPI_CAST_PTR (UINT32, FunctionName)) == ACPI_PREFIX_LOWER)
    {
        /* This is the case where the source has been 'linuxized' */

        return (FunctionName + 5);
    }

    return (FunctionName);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDebugPrint
 *
 * PARAMETERS:  RequestedDebugLevel - Requested debug print level
 *              LineNumber          - Caller's line number (for error output)
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Format              - Printf format field
 *              ...                 - Optional printf arguments
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print error message with prefix consisting of the module name,
 *              line number, and component ID.
 *
 ******************************************************************************/

void  ACPI_INTERNAL_VAR_XFACE
AcpiDebugPrint (
    UINT32                  RequestedDebugLevel,
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    const char              *Format,
    ...)
{
    ACPI_THREAD_ID          ThreadId;
    va_list                 args;


    /* Check if debug output enabled */

    if (!ACPI_IS_DEBUG_ENABLED (RequestedDebugLevel, ComponentId))
    {
        return;
    }

    /*
     * Thread tracking and context switch notification
     */
    ThreadId = AcpiOsGetThreadId ();
    if (ThreadId != AcpiGbl_PrevThreadId)
    {
        if (ACPI_LV_THREADS & AcpiDbgLevel)
        {
            AcpiOsPrintf (
                "\n**** Context Switch from TID %u to TID %u ****\n\n",
                (UINT32) AcpiGbl_PrevThreadId, (UINT32) ThreadId);
        }

        AcpiGbl_PrevThreadId = ThreadId;
        AcpiGbl_NestingLevel = 0;
    }

    /*
     * Display the module name, current line number, thread ID (if requested),
     * current procedure nesting level, and the current procedure name
     */
    AcpiOsPrintf ("%9s-%04ld ", ModuleName, LineNumber);

#ifdef ACPI_APPLICATION
    /*
     * For AcpiExec/iASL only, emit the thread ID and nesting level.
     * Note: nesting level is really only useful during a single-thread
     * execution. Otherwise, multiple threads will keep resetting the
     * level.
     */
    if (ACPI_LV_THREADS & AcpiDbgLevel)
    {
        AcpiOsPrintf ("[%u] ", (UINT32) ThreadId);
    }

    AcpiOsPrintf ("[%02ld] ", AcpiGbl_NestingLevel);
#endif

    AcpiOsPrintf ("%-22.22s: ", AcpiUtTrimFunctionName (FunctionName));

    va_start (args, Format);
    AcpiOsVprintf (Format, args);
    va_end (args);
}

ACPI_EXPORT_SYMBOL (AcpiDebugPrint)


/*******************************************************************************
 *
 * FUNCTION:    AcpiDebugPrintRaw
 *
 * PARAMETERS:  RequestedDebugLevel - Requested debug print level
 *              LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Format              - Printf format field
 *              ...                 - Optional printf arguments
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print message with no headers. Has same interface as
 *              DebugPrint so that the same macros can be used.
 *
 ******************************************************************************/

void  ACPI_INTERNAL_VAR_XFACE
AcpiDebugPrintRaw (
    UINT32                  RequestedDebugLevel,
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    const char              *Format,
    ...)
{
    va_list                 args;


    /* Check if debug output enabled */

    if (!ACPI_IS_DEBUG_ENABLED (RequestedDebugLevel, ComponentId))
    {
        return;
    }

    va_start (args, Format);
    AcpiOsVprintf (Format, args);
    va_end (args);
}

ACPI_EXPORT_SYMBOL (AcpiDebugPrintRaw)


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtTrace
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel
 *
 ******************************************************************************/

void
AcpiUtTrace (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId)
{

    AcpiGbl_NestingLevel++;
    AcpiUtTrackStackPtr ();

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s\n", AcpiGbl_FnEntryStr);
    }
}

ACPI_EXPORT_SYMBOL (AcpiUtTrace)


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtTracePtr
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Pointer             - Pointer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel
 *
 ******************************************************************************/

void
AcpiUtTracePtr (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    void                    *Pointer)
{

    AcpiGbl_NestingLevel++;
    AcpiUtTrackStackPtr ();

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s %p\n", AcpiGbl_FnEntryStr, Pointer);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtTraceStr
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              String              - Additional string to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel
 *
 ******************************************************************************/

void
AcpiUtTraceStr (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    char                    *String)
{

    AcpiGbl_NestingLevel++;
    AcpiUtTrackStackPtr ();

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s %s\n", AcpiGbl_FnEntryStr, String);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtTraceU32
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Integer             - Integer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel
 *
 ******************************************************************************/

void
AcpiUtTraceU32 (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    UINT32                  Integer)
{

    AcpiGbl_NestingLevel++;
    AcpiUtTrackStackPtr ();

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s %08X\n", AcpiGbl_FnEntryStr, Integer);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtExit
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel
 *
 ******************************************************************************/

void
AcpiUtExit (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId)
{

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s\n", AcpiGbl_FnExitStr);
    }

    if (AcpiGbl_NestingLevel)
    {
        AcpiGbl_NestingLevel--;
    }
}

ACPI_EXPORT_SYMBOL (AcpiUtExit)


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtStatusExit
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Status              - Exit status code
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel. Prints exit status also.
 *
 ******************************************************************************/

void
AcpiUtStatusExit (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    ACPI_STATUS             Status)
{

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        if (ACPI_SUCCESS (Status))
        {
            AcpiDebugPrint (ACPI_LV_FUNCTIONS,
                LineNumber, FunctionName, ModuleName, ComponentId,
                "%s %s\n", AcpiGbl_FnExitStr,
                AcpiFormatException (Status));
        }
        else
        {
            AcpiDebugPrint (ACPI_LV_FUNCTIONS,
                LineNumber, FunctionName, ModuleName, ComponentId,
                "%s ****Exception****: %s\n", AcpiGbl_FnExitStr,
                AcpiFormatException (Status));
        }
    }

    if (AcpiGbl_NestingLevel)
    {
        AcpiGbl_NestingLevel--;
    }
}

ACPI_EXPORT_SYMBOL (AcpiUtStatusExit)


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtValueExit
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Value               - Value to be printed with exit msg
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel. Prints exit value also.
 *
 ******************************************************************************/

void
AcpiUtValueExit (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    UINT64                  Value)
{

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s %8.8X%8.8X\n", AcpiGbl_FnExitStr,
            ACPI_FORMAT_UINT64 (Value));
    }

    if (AcpiGbl_NestingLevel)
    {
        AcpiGbl_NestingLevel--;
    }
}

ACPI_EXPORT_SYMBOL (AcpiUtValueExit)


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtPtrExit
 *
 * PARAMETERS:  LineNumber          - Caller's line number
 *              FunctionName        - Caller's procedure name
 *              ModuleName          - Caller's module name
 *              ComponentId         - Caller's component ID
 *              Ptr                 - Pointer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
 *              set in DebugLevel. Prints exit value also.
 *
 ******************************************************************************/

void
AcpiUtPtrExit (
    UINT32                  LineNumber,
    const char              *FunctionName,
    const char              *ModuleName,
    UINT32                  ComponentId,
    UINT8                   *Ptr)
{

    /* Check if enabled up-front for performance */

    if (ACPI_IS_DEBUG_ENABLED (ACPI_LV_FUNCTIONS, ComponentId))
    {
        AcpiDebugPrint (ACPI_LV_FUNCTIONS,
            LineNumber, FunctionName, ModuleName, ComponentId,
            "%s %p\n", AcpiGbl_FnExitStr, Ptr);
    }

    if (AcpiGbl_NestingLevel)
    {
        AcpiGbl_NestingLevel--;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiTracePoint
 *
 * PARAMETERS:  Type                - Trace event type
 *              Begin               - TRUE if before execution
 *              Aml                 - Executed AML address
 *              Pathname            - Object path
 *              Pointer             - Pointer to the related object
 *
 * RETURN:      None
 *
 * DESCRIPTION: Interpreter execution trace.
 *
 ******************************************************************************/

void
AcpiTracePoint (
    ACPI_TRACE_EVENT_TYPE   Type,
    BOOLEAN                 Begin,
    UINT8                   *Aml,
    char                    *Pathname)
{

    ACPI_FUNCTION_ENTRY ();

    AcpiExTracePoint (Type, Begin, Aml, Pathname);

#ifdef ACPI_USE_SYSTEM_TRACER
    AcpiOsTracePoint (Type, Begin, Aml, Pathname);
#endif
}

ACPI_EXPORT_SYMBOL (AcpiTracePoint)

#endif


#ifdef ACPI_APPLICATION
/*******************************************************************************
 *
 * FUNCTION:    AcpiLogError
 *
 * PARAMETERS:  Format              - Printf format field
 *              ...                 - Optional printf arguments
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print error message to the console, used by applications.
 *
 ******************************************************************************/

void  ACPI_INTERNAL_VAR_XFACE
AcpiLogError (
    const char              *Format,
    ...)
{
    va_list                 Args;

    va_start (Args, Format);
    (void) AcpiUtFileVprintf (ACPI_FILE_ERR, Format, Args);
    va_end (Args);
}

ACPI_EXPORT_SYMBOL (AcpiLogError)
#endif
