Renesas SuperH SH-4A - Page 247

Rev. 1.50, 10/04, page 227 of 448
temp=R[n]^R[m];
HH = (temp & 0xFF000000) >> 24;
HL = (temp & 0x00FF0000) >> 16;
LH = (temp & 0x0000FF00) >> 8;
LL = temp & 0x000000FF;
HH = HH && HL && LH && LL;
if (HH==0) T = 1;
else T = 0;
PC += 2;
}
CMPIM(long i) /* CMP_EQ #imm,R0 */
{
long imm;
if ((i&0x80)==0) imm=(0x000000FF & (long i));
else imm=(0xFFFFFF00 | (long i));
if (R[0]==imm) T = 1;
else T = 0;
PC += 2;
}
Example:
CMP/GE R0,R1 ;R0 = H'7FFFFFFF, R1 = H'80000000
BT TRGET_T ;T = 0, so branch is not taken.
CMP/HS R0,R1 ;R0 = H'7FFFFFFF, R1 = H'80000000
BT TRGET_T ;T = 1, so branch is taken.
CMP/STR R2,R3 ;R2 = "ABCD", R3 = "XYCZ"
BT TRGET_T ;T = 1, so branch is taken.