88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
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/*
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* hl_clock.c -- provide _clock() and _times().
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*
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* Copyright (c) 2024 Synopsys Inc.
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*
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*/
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#include <errno.h>
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#include <stdint.h>
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#include <time.h>
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#include <sys/times.h>
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#include "../arc-timer.h"
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#include "hl_toolchain.h"
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#include "hl_api.h"
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/* Implements HL_SYSCALL_CLOCK. */
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static __always_inline clock_t
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_hl_clock (void)
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{
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uint32_t ret;
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volatile __uncached char *p;
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p = _hl_message (HL_SYSCALL_CLOCK, ":i", (uint32_t *) &ret);
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_hl_delete ();
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if (p == NULL)
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{
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errno = ETIMEDOUT;
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return -1;
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}
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return ret;
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}
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/*
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* This implementation returns timer 0 value if it exists or
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* host clock() value converted to target clocks.
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*
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* Please note that this value cannot be converted to seconds
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* using CLOCKS_PER_SEC.
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*/
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clock_t
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_clock (void)
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{
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if (_arc_timer_default_present ())
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return _arc_timer_default_read ();
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else
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return _hl_clock ();
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}
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/* All time is counted as user time. */
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clock_t
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_times (struct tms *tp)
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{
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clock_t ret;
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if (tp == NULL)
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{
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errno = EFAULT;
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return -1;
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}
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ret = _clock ();
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if (ret == (clock_t) -1)
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return ret;
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tp->tms_utime = ret;
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tp->tms_stime = 0;
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tp->tms_cutime = 0;
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tp->tms_cstime = 0;
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return ret;
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}
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