mirror of
https://github.com/kanjitalk755/macemu.git
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158 lines
3.2 KiB
C++
158 lines
3.2 KiB
C++
/*
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* timer_amiga.cpp - Time Manager emulation, AmigaOS specific stuff
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*
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* Basilisk II (C) 1997-2008 Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <exec/types.h>
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#include <devices/timer.h>
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#define __USE_SYSBASE
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#include <proto/timer.h>
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#include <proto/intuition.h>
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#include <inline/timer.h>
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#include <inline/intuition.h>
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#include "sysdeps.h"
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#include "timer.h"
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#define DEBUG 0
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#include "debug.h"
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/*
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* Return microseconds since boot (64 bit)
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*/
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void Microseconds(uint32 &hi, uint32 &lo)
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{
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D(bug("Microseconds\n"));
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struct timeval tv;
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GetSysTime(&tv);
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uint64 tl = (uint64)tv.tv_secs * 1000000 + tv.tv_micro;
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hi = tl >> 32;
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lo = tl;
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}
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/*
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* Return local date/time in Mac format (seconds since 1.1.1904)
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*/
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uint32 TimerDateTime(void)
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{
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ULONG secs, mics;
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CurrentTime(&secs, &mics);
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return secs + 0x8b31ef80;
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}
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/*
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* Get current time
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*/
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void timer_current_time(tm_time_t &t)
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{
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GetSysTime(&t);
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}
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/*
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* Add times
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*/
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void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b)
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{
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res = a;
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AddTime(&res, &b);
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}
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/*
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* Subtract times
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*/
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void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
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{
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res = a;
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SubTime(&res, &b);
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}
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/*
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* Compare times (<0: a < b, =0: a = b, >0: a > b)
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*/
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int timer_cmp_time(tm_time_t a, tm_time_t b)
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{
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return CmpTime(&b, &a);
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}
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/*
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* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
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*/
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void timer_mac2host_time(tm_time_t &res, int32 mactime)
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{
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if (mactime > 0) {
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res.tv_secs = mactime / 1000; // Time in milliseconds
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res.tv_micro = (mactime % 1000) * 1000;
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} else {
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res.tv_secs = -mactime / 1000000; // Time in negative microseconds
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res.tv_micro = -mactime % 1000000;
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}
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}
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/*
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* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
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* A negative input value for hosttime results in a zero return value
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* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
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*/
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int32 timer_host2mac_time(tm_time_t hosttime)
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{
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if (hosttime.tv_secs < 0)
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return 0;
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else {
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uint64 t = (uint64)hosttime.tv_secs * 1000000 + hosttime.tv_micro;
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if (t > 0x7fffffff)
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return t / 1000; // Time in milliseconds
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else
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return -t; // Time in negative microseconds
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}
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}
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/*
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* Suspend emulator thread, virtual CPU in idle mode
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*/
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void idle_wait(void)
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{
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// XXX if you implement this make sure to call idle_resume() from TriggerInterrupt()
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}
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/*
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* Resume execution of emulator thread, events just arrived
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*/
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void idle_resume(void)
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{
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}
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