367 lines
9.7 KiB
C
367 lines
9.7 KiB
C
/******************************************************************************
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*
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* Module Name: osgendbg - Generic debugger command singalling
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2017, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <contrib/dev/acpica/include/acdebug.h>
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#define _COMPONENT ACPI_CA_DEBUGGER
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ACPI_MODULE_NAME ("osgendbg")
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/* Local prototypes */
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static void
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AcpiDbRunRemoteDebugger (
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char *BatchBuffer);
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static ACPI_MUTEX AcpiGbl_DbCommandReady;
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static ACPI_MUTEX AcpiGbl_DbCommandComplete;
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static BOOLEAN AcpiGbl_DbCommandSignalsInitialized = FALSE;
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/******************************************************************************
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*
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* FUNCTION: AcpiDbRunRemoteDebugger
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*
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* PARAMETERS: BatchBuffer - Buffer containing commands running in
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* the batch mode
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*
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* RETURN: None
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*
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* DESCRIPTION: Run multi-threading debugger remotely
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*
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*****************************************************************************/
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static void
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AcpiDbRunRemoteDebugger (
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char *BatchBuffer)
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{
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ACPI_STATUS Status;
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char *Ptr = BatchBuffer;
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char *Cmd = Ptr;
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while (!AcpiGbl_DbTerminateLoop)
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{
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if (BatchBuffer)
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{
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if (*Ptr)
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{
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while (*Ptr)
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{
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if (*Ptr == ',')
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{
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/* Convert commas to spaces */
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*Ptr = ' ';
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}
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else if (*Ptr == ';')
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{
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*Ptr = '\0';
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continue;
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}
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Ptr++;
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}
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strncpy (AcpiGbl_DbLineBuf, Cmd, ACPI_DB_LINE_BUFFER_SIZE);
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Ptr++;
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Cmd = Ptr;
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}
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else
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{
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return;
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}
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}
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else
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{
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/* Force output to console until a command is entered */
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AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);
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/* Different prompt if method is executing */
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if (!AcpiGbl_MethodExecuting)
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{
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AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
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}
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else
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{
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AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
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}
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/* Get the user input line */
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Status = AcpiOsGetLine (AcpiGbl_DbLineBuf,
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ACPI_DB_LINE_BUFFER_SIZE, NULL);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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}
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/*
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* Signal the debug thread that we have a command to execute,
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* and wait for the command to complete.
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*/
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AcpiOsReleaseMutex (AcpiGbl_DbCommandReady);
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Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandComplete,
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ACPI_WAIT_FOREVER);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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}
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiOsWaitCommandReady
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Negotiate with the debugger foreground thread (the user
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* thread) to wait the readiness of a command.
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*
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*****************************************************************************/
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ACPI_STATUS
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AcpiOsWaitCommandReady (
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void)
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{
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ACPI_STATUS Status = AE_OK;
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if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED)
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{
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Status = AE_TIME;
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while (Status == AE_TIME)
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{
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if (AcpiGbl_DbTerminateLoop)
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{
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Status = AE_CTRL_TERMINATE;
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}
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else
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{
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Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandReady, 1000);
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}
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}
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}
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else
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{
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/* Force output to console until a command is entered */
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AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);
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/* Different prompt if method is executing */
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if (!AcpiGbl_MethodExecuting)
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{
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AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
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}
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else
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{
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AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
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}
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/* Get the user input line */
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Status = AcpiOsGetLine (AcpiGbl_DbLineBuf,
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ACPI_DB_LINE_BUFFER_SIZE, NULL);
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}
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if (ACPI_FAILURE (Status) && Status != AE_CTRL_TERMINATE)
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"While parsing/handling command line"));
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}
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return (Status);
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiOsNotifyCommandComplete
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*
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* PARAMETERS: void
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*
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* RETURN: Status
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*
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* DESCRIPTION: Negotiate with the debugger foreground thread (the user
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* thread) to notify the completion of a command.
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*
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*****************************************************************************/
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ACPI_STATUS
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AcpiOsNotifyCommandComplete (
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void)
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{
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if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED)
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{
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AcpiOsReleaseMutex (AcpiGbl_DbCommandComplete);
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}
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return (AE_OK);
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiOsInitializeDebugger
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initialize OSPM specific part of the debugger
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*
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*****************************************************************************/
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ACPI_STATUS
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AcpiOsInitializeDebugger (
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void)
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{
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ACPI_STATUS Status;
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/* Create command signals */
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Status = AcpiOsCreateMutex (&AcpiGbl_DbCommandReady);
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if (ACPI_FAILURE (Status))
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{
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return (Status);
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}
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Status = AcpiOsCreateMutex (&AcpiGbl_DbCommandComplete);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorReady;
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}
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/* Initialize the states of the command signals */
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Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandComplete,
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ACPI_WAIT_FOREVER);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorComplete;
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}
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Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandReady,
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ACPI_WAIT_FOREVER);
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if (ACPI_FAILURE (Status))
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{
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goto ErrorComplete;
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}
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AcpiGbl_DbCommandSignalsInitialized = TRUE;
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return (Status);
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ErrorComplete:
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AcpiOsDeleteMutex (AcpiGbl_DbCommandComplete);
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ErrorReady:
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AcpiOsDeleteMutex (AcpiGbl_DbCommandReady);
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return (Status);
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiOsTerminateDebugger
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Terminate signals used by the multi-threading debugger
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*
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*****************************************************************************/
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void
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AcpiOsTerminateDebugger (
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void)
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{
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if (AcpiGbl_DbCommandSignalsInitialized)
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{
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AcpiOsDeleteMutex (AcpiGbl_DbCommandReady);
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AcpiOsDeleteMutex (AcpiGbl_DbCommandComplete);
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}
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiRunDebugger
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*
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* PARAMETERS: BatchBuffer - Buffer containing commands running in
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* the batch mode
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*
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* RETURN: None
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*
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* DESCRIPTION: Run a local/remote debugger
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*
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*****************************************************************************/
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void
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AcpiRunDebugger (
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char *BatchBuffer)
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{
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/* Check for single or multithreaded debug */
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if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
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{
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AcpiDbRunRemoteDebugger (BatchBuffer);
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}
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else
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{
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AcpiDbUserCommands ();
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}
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}
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ACPI_EXPORT_SYMBOL (AcpiRunDebugger)
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