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Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/qnx/ztimer.c')
-rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/qnx/ztimer.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/qnx/ztimer.c b/board/MAI/bios_emulator/scitech/src/pm/qnx/ztimer.c new file mode 100644 index 00000000000..d2740971f98 --- /dev/null +++ b/board/MAI/bios_emulator/scitech/src/pm/qnx/ztimer.c @@ -0,0 +1,91 @@ +/**************************************************************************** +* +* Ultra Long Period Timer +* +* ======================================================================== +* +* The contents of this file are subject to the SciTech MGL Public +* License Version 1.0 (the "License"); you may not use this file +* except in compliance with the License. You may obtain a copy of +* the License at http://www.scitechsoft.com/mgl-license.txt +* +* Software distributed under the License is distributed on an +* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +* implied. See the License for the specific language governing +* rights and limitations under the License. +* +* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. +* +* The Initial Developer of the Original Code is SciTech Software, Inc. +* All Rights Reserved. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: QNX +* +* Description: QNX specific implementation for the Zen Timer functions. +* +****************************************************************************/ + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +REMARKS: +Initialise the Zen Timer module internals. +****************************************************************************/ +void __ZTimerInit(void) +{ +} + +/**************************************************************************** +REMARKS: +Use the gettimeofday() function to get microsecond precision (probably less +though) +****************************************************************************/ +static ulong __ULZReadTime(void) +{ + struct timespec ts; + clock_gettime(CLOCK_REALTIME, &ts); + return (ts.tv_nsec / 1000 + ts.tv_sec * 1000000); +} + +/**************************************************************************** +REMARKS: +Start the Zen Timer counting. +****************************************************************************/ +#define __LZTimerOn(tm) tm->start.low = __ULZReadTime() + +/**************************************************************************** +REMARKS: +Compute the lap time since the timer was started. +****************************************************************************/ +#define __LZTimerLap(tm) (__ULZReadTime() - tm->start.low) + +/**************************************************************************** +REMARKS: +Call the assembler Zen Timer functions to do the timing. +****************************************************************************/ +#define __LZTimerOff(tm) tm->end.low = __ULZReadTime() + +/**************************************************************************** +REMARKS: +Call the assembler Zen Timer functions to do the timing. +****************************************************************************/ +#define __LZTimerCount(tm) (tm->end.low - tm->start.low) + +/**************************************************************************** +REMARKS: +Define the resolution of the long period timer as microseconds per timer tick. +****************************************************************************/ +#define ULZTIMER_RESOLUTION 1 + +/**************************************************************************** +REMARKS: +Compute the elapsed time from the BIOS timer tick. Note that we check to see +whether a midnight boundary has passed, and if so adjust the finish time to +account for this. We cannot detect if more that one midnight boundary has +passed, so if this happens we will be generating erronous results. +****************************************************************************/ +ulong __ULZElapsedTime(ulong start,ulong finish) +{ return finish - start; } |