24531904_j

padd
}
割り込み : 無効操作フ ォ ル ト
for (i = 0; i < 4; i++) {
temp[i] = sign_ext(x[i], 16) + sign_ext(y[i], 16);
}
} else if (uus_saturation_form) {
max = 0xffff;
min = 0x0000;
for (i = 0; i < 4; i++) {
temp[i] = zero_ext(x[i], 16) + sign_ext(y[i], 16);
}
} else if (uuu_saturation_form) {
max = 0xffff;
min = 0x0000;
for (i = 0; i < 4; i++) {
temp[i] = zero_ext(x[i], 16) + zero_ext(y[i], 16);
}
} else { // modulo_form
for (i = 0; i < 4; i++) {
temp[i] = zero_ext(x[i], 16) + zero_ext(y[i], 16);
}
}
if (sss_saturation_form || uus_saturation_form ||
uuu_saturation_form) {
for (i = 0; i < 4; i++) {
if (temp[i] > max)
temp[i] = max;
}
if (temp[i] < min)
temp[i] = min;
}
GR[r 1 ] = concatenate4(temp[3], temp[2], temp[1], temp[0]);
} else { // four-byte elements
x[0] = GR[r 2 ]{31:0}; y[0] = GR[r 3 ]{31:0};
x[1] = GR[r 2 ]{63:32}; y[1] = GR[r 3 ]{63:32};
}
for (i = 0; i < 2; i++) { // modulo_form
temp[i] = zero_ext(x[i], 32) + zero_ext(y[i], 32);
}
GR[r 1 ] = concatenate2(temp[1], temp[0]);
GR[r 1 ].nat = GR[r 2 ].nat || GR[r 3 ].nat;
第 3 巻 : 命令リファレンス 3:179