35 lines
728 B
C
35 lines
728 B
C
/* $NetBSD: getsecs.c,v 1.5 1998/01/05 07:02:49 perry Exp $ */
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#include <sys/param.h>
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#include "include/prom.h"
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#include "include/rpb.h"
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int
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getsecs()
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{
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static long tnsec;
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static long lastpcc, wrapsecs;
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long curpcc;
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if (tnsec == 0) {
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tnsec = 1;
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lastpcc = alpha_rpcc() & 0xffffffff;
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wrapsecs = (0xffffffff /
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((struct rpb *)HWRPB_ADDR)->rpb_cc_freq) + 1;
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#if 0
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printf("getsecs: cc freq = %d, time to wrap = %d\n",
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((struct rpb *)HWRPB_ADDR)->rpb_cc_freq, wrapsecs);
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#endif
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}
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curpcc = alpha_rpcc() & 0xffffffff;
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if (curpcc < lastpcc)
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curpcc += 0x100000000;
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tnsec += ((curpcc - lastpcc) * 1000000000) / ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq;
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lastpcc = curpcc;
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return (tnsec / 1000000000);
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}
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