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/* Interpreter fragment for the Hitachi H8/300 architecture simulator.
Written by Steve Chamberlain of Cygnus Support.
sac@cygnus.com
This file is part of H8/300 sim
THIS SOFTWARE IS NOT COPYRIGHTED
Cygnus offers the following for use in the public domain. Cygnus
makes no warranty with regard to the software or it's performance
and the user accepts the software "AS IS" with all faults.
CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
movflags8:
n = dst & 0x80;
z = !(dst & 0xff);
v = 0;
goto next;
movflags16:
n = dst & 0x8000;
z = !(dst & 0xffff);
v = 0;
goto next;
aluflags8:
n = dst & 0x80;
z = !(dst & 0xff);
v = ((srca & 0x80) == (srcb & 0x80)) && ((srca & 0x80) != (dst & 0x80));
c = dst & 0x100;
goto next;
aluflags16:
n = dst & 0x8000;
z = !(dst & 0xffff);
v = ((srca & 0x8000) == (srcb & 0x8000)) && ((srca & 0x8000) != (dst & 0x8000));
c = dst & 0x10000;
goto next;
setflags:;
SET_CCR(tmp);
goto next;
logflags:
shiftflags:
v = 0;
incflags:
z = !(dst & 0xff);
n = dst & 0x80;
goto next;
next: ;
pc = npc;
if (ni > checkfreq)
{
ni = 0;
SAVE_INTERPRETER_STATE();
perifs();
LOAD_INTERPRETER_STATE();
#ifdef __GO32__
if (kbhit())
saved_state.exception = SIGINT;
#endif
}
ni++;
} while (!saved_state.exception);
SAVE_INTERPRETER_STATE();
}
sim_info()
{
int cycles = saved_state.reg[CYCLES];
printf("cycles (v approximate) %10d\n", cycles);
}
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