diff options
Diffstat (limited to 'source/os_specific/service_layers/osgendbg.c')
| -rw-r--r-- | source/os_specific/service_layers/osgendbg.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/source/os_specific/service_layers/osgendbg.c b/source/os_specific/service_layers/osgendbg.c new file mode 100644 index 000000000000..1b7079e1c813 --- /dev/null +++ b/source/os_specific/service_layers/osgendbg.c @@ -0,0 +1,366 @@ +/****************************************************************************** + * + * Module Name: osgendbg - Generic debugger command singalling + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2016, 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 "acdebug.h" + + +#define _COMPONENT ACPI_CA_DEBUGGER + ACPI_MODULE_NAME ("osgendbg") + + +/* Local prototypes */ + +static void +AcpiDbRunRemoteDebugger ( + char *BatchBuffer); + + +static ACPI_MUTEX AcpiGbl_DbCommandReady; +static ACPI_MUTEX AcpiGbl_DbCommandComplete; +static BOOLEAN AcpiGbl_DbCommandSignalsInitialized = FALSE; + +/****************************************************************************** + * + * FUNCTION: AcpiDbRunRemoteDebugger + * + * PARAMETERS: BatchBuffer - Buffer containing commands running in + * the batch mode + * + * RETURN: None + * + * DESCRIPTION: Run multi-threading debugger remotely + * + *****************************************************************************/ + +static void +AcpiDbRunRemoteDebugger ( + char *BatchBuffer) +{ + ACPI_STATUS Status; + char *Ptr = BatchBuffer; + char *Cmd = Ptr; + + + while (!AcpiGbl_DbTerminateLoop) + { + if (BatchBuffer) + { + if (*Ptr) + { + while (*Ptr) + { + if (*Ptr == ',') + { + /* Convert commas to spaces */ + *Ptr = ' '; + } + else if (*Ptr == ';') + { + *Ptr = '\0'; + continue; + } + + Ptr++; + } + + strncpy (AcpiGbl_DbLineBuf, Cmd, ACPI_DB_LINE_BUFFER_SIZE); + Ptr++; + Cmd = Ptr; + } + else + { + return; + } + } + else + { + /* Force output to console until a command is entered */ + + AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT); + + /* Different prompt if method is executing */ + + if (!AcpiGbl_MethodExecuting) + { + AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT); + } + else + { + AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT); + } + + /* Get the user input line */ + + Status = AcpiOsGetLine (AcpiGbl_DbLineBuf, + ACPI_DB_LINE_BUFFER_SIZE, NULL); + if (ACPI_FAILURE (Status)) + { + return; + } + } + + /* + * Signal the debug thread that we have a command to execute, + * and wait for the command to complete. + */ + AcpiOsReleaseMutex (AcpiGbl_DbCommandReady); + + Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandComplete, + ACPI_WAIT_FOREVER); + if (ACPI_FAILURE (Status)) + { + return; + } + } +} + + +/****************************************************************************** + * + * FUNCTION: AcpiOsWaitCommandReady + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Negotiate with the debugger foreground thread (the user + * thread) to wait the readiness of a command. + * + *****************************************************************************/ + +ACPI_STATUS +AcpiOsWaitCommandReady ( + void) +{ + ACPI_STATUS Status = AE_OK; + + + if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED) + { + Status = AE_TIME; + + while (Status == AE_TIME) + { + if (AcpiGbl_DbTerminateLoop) + { + Status = AE_CTRL_TERMINATE; + } + else + { + Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandReady, 1000); + } + } + } + else + { + /* Force output to console until a command is entered */ + + AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT); + + /* Different prompt if method is executing */ + + if (!AcpiGbl_MethodExecuting) + { + AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT); + } + else + { + AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT); + } + + /* Get the user input line */ + + Status = AcpiOsGetLine (AcpiGbl_DbLineBuf, + ACPI_DB_LINE_BUFFER_SIZE, NULL); + } + + if (ACPI_FAILURE (Status) && Status != AE_CTRL_TERMINATE) + { + ACPI_EXCEPTION ((AE_INFO, Status, + "While parsing/handling command line")); + } + return (Status); +} + + +/****************************************************************************** + * + * FUNCTION: AcpiOsNotifyCommandComplete + * + * PARAMETERS: void + * + * RETURN: Status + * + * DESCRIPTION: Negotiate with the debugger foreground thread (the user + * thread) to notify the completion of a command. + * + *****************************************************************************/ + +ACPI_STATUS +AcpiOsNotifyCommandComplete ( + void) +{ + + if (AcpiGbl_DebuggerConfiguration == DEBUGGER_MULTI_THREADED) + { + AcpiOsReleaseMutex (AcpiGbl_DbCommandComplete); + } + return (AE_OK); +} + + +/****************************************************************************** + * + * FUNCTION: AcpiOsInitializeDebugger + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Initialize OSPM specific part of the debugger + * + *****************************************************************************/ + +ACPI_STATUS +AcpiOsInitializeDebugger ( + void) +{ + ACPI_STATUS Status; + + + /* Create command signals */ + + Status = AcpiOsCreateMutex (&AcpiGbl_DbCommandReady); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + Status = AcpiOsCreateMutex (&AcpiGbl_DbCommandComplete); + if (ACPI_FAILURE (Status)) + { + goto ErrorReady; + } + + /* Initialize the states of the command signals */ + + Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandComplete, + ACPI_WAIT_FOREVER); + if (ACPI_FAILURE (Status)) + { + goto ErrorComplete; + } + Status = AcpiOsAcquireMutex (AcpiGbl_DbCommandReady, + ACPI_WAIT_FOREVER); + if (ACPI_FAILURE (Status)) + { + goto ErrorComplete; + } + + AcpiGbl_DbCommandSignalsInitialized = TRUE; + return (Status); + +ErrorComplete: + AcpiOsDeleteMutex (AcpiGbl_DbCommandComplete); +ErrorReady: + AcpiOsDeleteMutex (AcpiGbl_DbCommandReady); + return (Status); +} + + +/****************************************************************************** + * + * FUNCTION: AcpiOsTerminateDebugger + * + * PARAMETERS: None + * + * RETURN: None + * + * DESCRIPTION: Terminate signals used by the multi-threading debugger + * + *****************************************************************************/ + +void +AcpiOsTerminateDebugger ( + void) +{ + + if (AcpiGbl_DbCommandSignalsInitialized) + { + AcpiOsDeleteMutex (AcpiGbl_DbCommandReady); + AcpiOsDeleteMutex (AcpiGbl_DbCommandComplete); + } +} + + +/****************************************************************************** + * + * FUNCTION: AcpiRunDebugger + * + * PARAMETERS: BatchBuffer - Buffer containing commands running in + * the batch mode + * + * RETURN: None + * + * DESCRIPTION: Run a local/remote debugger + * + *****************************************************************************/ + +void +AcpiRunDebugger ( + char *BatchBuffer) +{ + /* Check for single or multithreaded debug */ + + if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED) + { + AcpiDbRunRemoteDebugger (BatchBuffer); + } + else + { + AcpiDbUserCommands (); + } +} + +ACPI_EXPORT_SYMBOL (AcpiRunDebugger) |