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+//==========================================================================
+//
+//        clock0.cxx
+//
+//        Clock test 0
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos 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://sourceware.cygnus.com/ecos
+// 
+// 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 eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     dsm
+// Contributors:    dsm
+// Date:          1998-02-13
+// Description:   Tests some basic clock functions.
+// Omissions:     Doesn't test likely boundary conditions for
+//                CYGNUM_KERNEL_COUNTERS_MULTI_LIST_SIZE
+//                Real Time Clock Testing is limited
+// Options:
+//     CYGIMP_KERNEL_COUNTERS_SINGLE_LIST
+//     CYGIMP_KERNEL_COUNTERS_MULTI_LIST
+//     CYGVAR_KERNEL_COUNTERS_CLOCK
+//     CYGNUM_KERNEL_COUNTERS_MULTI_LIST_SIZE
+// Assumptions:   This assumes we have long long support and
+//                that counters are 64 bits.
+//####DESCRIPTIONEND####
+
+#include <pkgconf/kernel.h>
+
+#include <cyg/kernel/clock.hxx>
+
+#include <cyg/infra/testcase.h>
+
+#include <cyg/kernel/clock.inl>
+
+#include "testaux.hxx"
+
+#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK
+
+cyg_alarm_fn call_me;
+
+bool flash( void )
+{
+    Cyg_Counter counter0 = Cyg_Counter();
+    Cyg_Counter counter1 = Cyg_Counter(723);
+    
+    CYG_ASSERTCLASSO( counter0, "error" );
+    CYG_ASSERTCLASSO( counter1, "error" );
+
+    Cyg_Alarm alarm0 = Cyg_Alarm(&counter0, call_me, 12);
+
+    CYG_ASSERTCLASSO( alarm0, "error" );
+
+    Cyg_Clock::cyg_resolution res = {1,2};
+
+    Cyg_Clock clock0(res);
+
+    CYG_ASSERTCLASSO( clock0, "error" );
+
+    return true;
+}
+
+// Testing alarms
+//
+// call_me is a function that will be called when an alarm is
+// triggered.  It updates a global variable called which is CHECKed
+// explicitly to see if the approriate alarms have been called.
+
+cyg_uint16 called = 0x0;
+
+void call_me(Cyg_Alarm *alarm, CYG_ADDRWORD data)
+{
+    called ^= data;
+}
+
+void call_me2(Cyg_Alarm *alarm, CYG_ADDRWORD data)
+{
+    call_me(alarm, data^0x10);
+}
+
+
+void clock0_main(void)
+{
+    CYG_TEST_INIT();
+
+    CHECK(flash());
+    CHECK(flash());
+
+    const cyg_uint32 big_number = 3333222111u;
+    Cyg_Counter counter0 = Cyg_Counter();
+
+    CHECK( 0 == counter0.current_value() );
+    CHECK( 0 == counter0.current_value_lo() );
+    CHECK( 0 == counter0.current_value_hi() );
+
+    counter0.tick();
+
+    CHECK( 1 == counter0.current_value() );
+    CHECK( 1 == counter0.current_value_lo() );
+    CHECK( 0 == counter0.current_value_hi() );
+
+    counter0.tick(6);
+
+    CHECK( 7 == counter0.current_value() );
+    CHECK( 7 == counter0.current_value_lo() );
+    CHECK( 0 == counter0.current_value_hi() );
+
+    counter0.set_value( 0xfffffffc );
+
+    CHECK( 0xfffffffc == counter0.current_value() );
+    CHECK( 0xfffffffc == counter0.current_value_lo() );
+    CHECK( 0 == counter0.current_value_hi() );
+
+    counter0.tick( 0x13 );	// Overflows 32 bits
+    
+    CHECK( 0x10000000fULL == counter0.current_value() );
+    CHECK( 0xf == counter0.current_value_lo() );
+    CHECK( 0x1 == counter0.current_value_hi() );
+
+    
+    Cyg_Counter counter1 = Cyg_Counter(big_number);
+
+    CHECK( 0 == counter1.current_value() );
+    CHECK( 0 == counter1.current_value_lo() );
+    CHECK( 0 == counter1.current_value_hi() );
+
+    counter1.tick(2);
+    
+    CHECK( 2ll*big_number == counter1.current_value() );
+    CHECK( ((2ll*big_number) & 0xffffffff) ==
+                counter1.current_value_lo() );
+    CHECK( ((2ll*big_number) >> 32) == counter1.current_value_hi() );
+
+    counter1.tick();
+    
+    CHECK( 3ll*big_number == counter1.current_value() );
+    CHECK( ((3ll*big_number) & 0xffffffff) ==
+                counter1.current_value_lo() );
+    CHECK( ((3ll*big_number) >> 32) == counter1.current_value_hi() );
+
+    counter1.tick();
+    
+    CHECK( 4ll*big_number == counter1.current_value() );
+    CHECK( ((4ll*big_number) & 0xffffffff) ==
+                counter1.current_value_lo() );
+    CHECK( ((4ll*big_number) >> 32) == counter1.current_value_hi() );
+
+    counter1.set_value(1222333444555ll);
+    CHECK( 1222333444555ll == counter1.current_value() );
+
+    counter0.set_value(11);
+    CHECK( 11 == counter0.current_value() );
+    
+    // the call_me functions cause the "called" bits to toggle
+    // CHECKing the value of called TEST_CHECKs the parity of # of calls
+    // made by each alarm.
+
+    Cyg_Alarm alarm0 = Cyg_Alarm(&counter0, call_me, 0x1);
+    Cyg_Alarm alarm1 = Cyg_Alarm(&counter0, call_me, 0x2);
+    Cyg_Alarm alarm2 = Cyg_Alarm(&counter0, call_me2, 0x4);
+    
+    CHECK( 0x00 == called );
+    alarm0.initialize(12,3);
+    alarm2.initialize(21,2);
+    CHECK( 0x00 == called );
+
+    counter0.tick();		// 12 a0
+    CHECK( 0x01 == called );
+
+    alarm1.initialize(13,0);
+    counter0.tick();		// 13 a1
+    CHECK( 0x03 == called );
+
+    alarm1.initialize(17,0);
+    counter0.tick();		// 14
+    CHECK( 0x03 == called );
+
+    counter0.tick();		// 15 a0
+    CHECK( 0x02 == called );
+
+    counter0.tick(2);		// 17 a1
+    CHECK( 0x00 == called );
+
+    counter0.tick();		// 18 a0
+    CHECK( 0x01 == called );
+
+    counter0.tick(3);		// 21 a0 a2
+    CHECK( 0x14 == called );
+
+    counter0.tick(2);		// 23 a2
+    CHECK( 0x00 == called );
+    
+    alarm2.disable();  
+
+    counter0.tick(2);		// 25 a0(24)
+    CHECK( 0x01 == called );
+    
+    alarm2.enable();            // a2 (enabled at 25)
+    CHECK( 0x15 == called );
+
+    counter0.tick();		// 26
+    CHECK( 0x15 == called );
+    
+    counter0.tick(2);		// 28 a0(27) a2(27)
+    CHECK( 0x00 == called );
+    
+    counter0.tick(3);		// 31 a0(30) a2(29 31)
+    CHECK( 0x01 == called );
+
+    Cyg_Clock::cyg_resolution res0;
+
+    res0.dividend = 100;
+    res0.divisor = 3;
+
+    Cyg_Clock::cyg_resolution res1;
+
+    Cyg_Clock clock0 = Cyg_Clock(res0);
+
+    res1 = clock0.get_resolution();
+    CHECK( res0.dividend == res1.dividend );
+    CHECK( res0.divisor == res1.divisor );
+
+    res1.dividend = 12;
+    res1.divisor = 25;
+
+    clock0.set_resolution(res1);
+    res0 = clock0.get_resolution();
+    CHECK( res0.dividend == res1.dividend );
+    CHECK( res0.divisor == res1.divisor );
+
+    res0 = Cyg_Clock::real_time_clock->get_resolution();
+
+    CYG_TEST_PASS_FINISH("Clock 0 OK");
+}
+
+externC void
+cyg_start( void )
+{
+    clock0_main();
+}
+
+#else // def CYGVAR_KERNEL_COUNTERS_CLOCK
+
+externC void
+cyg_start( void )
+{
+    CYG_TEST_INIT();
+    CYG_TEST_PASS_FINISH( "N/A: Kernel real-time clock disabled");
+}
+
+#endif // def CYGVAR_KERNEL_COUNTERS_CLOCK
+// EOF clock0.cxx