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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "glk/frotz/processor.h"
namespace Glk {
namespace Frotz {
void Processor::z_add() {
store((zword)((short)zargs[0] + (short)zargs[1]));
}
void Processor::z_and() {
store((zword)(zargs[0] & zargs[1]));
}
void Processor::z_art_shift() {
if ((short)zargs[1] > 0)
store((zword)((short)zargs[0] << (short)zargs[1]));
else
store((zword)((short)zargs[0] >> - (short)zargs[1]));
}
void Processor::z_div() {
if (zargs[1] == 0)
runtimeError(ERR_DIV_ZERO);
store((zword)((short)zargs[0] / (short)zargs[1]));
}
void Processor::z_je() {
branch(
zargc > 1 && (zargs[0] == zargs[1] || (
zargc > 2 && (zargs[0] == zargs[2] || (
zargc > 3 && (zargs[0] == zargs[3])))))
);
}
void Processor::z_jg() {
branch((short)zargs[0] > (short)zargs[1]);
}
void Processor::z_jl() {
branch((short)zargs[0] < (short)zargs[1]);
}
void Processor::z_jz() {
branch((short)zargs[0] == 0);
}
void Processor::z_log_shift() {
if ((short)zargs[1] > 0)
store((zword)(zargs[0] << (short)zargs[1]));
else
store((zword)(zargs[0] >> - (short)zargs[1]));
}
void Processor::z_mod() {
if (zargs[1] == 0)
runtimeError(ERR_DIV_ZERO);
store((zword)((short)zargs[0] % (short)zargs[1]));
}
void Processor::z_mul() {
store((zword)((short)zargs[0] * (short)zargs[1]));
}
void Processor::z_not() {
store((zword)~zargs[0]);
}
void Processor::z_or() {
store((zword)(zargs[0] | zargs[1]));
}
void Processor::z_sub() {
store((zword)((short)zargs[0] - (short)zargs[1]));
}
void Processor::z_test() {
branch((zargs[0] & zargs[1]) == zargs[1]);
}
} // End of namespace Frotz
} // End of namespace Glk
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