1 2 .EXTERN MY_LABEL2; 3 .section .text; 4 5 // 6 //9 SHIFT/ROTATE OPERATIONS 7 // 8 9 //Preg = ( Preg + Preg ) << 1 ; /* dest_reg = (dest_reg + src_reg) x 2 (a) */ 10 P0 = (P0+P0)<<1; 11 P0 = (P0+P1)<<1; 12 P2 = (P2+P0)<<1; 13 P1 = (P1+P2)<<1; 14 15 //P0 = (P2+P0)<<1; 16 17 //Preg = ( Preg + Preg ) << 2 ; /* dest_reg = (dest_reg + src_reg) x 4 (a) */ 18 P0 = (P0+P0)<<2; 19 P0 = (P0+P1)<<2; 20 P2 = (P2+P0)<<2; 21 P1 = (P1+P2)<<2; 22 23 //P0 = (P2+P0)<<2; 24 25 //Dreg = (Dreg + Dreg) << 1 ; /* dest_reg = (dest_reg + src_reg) x 2 (a) */ 26 R0 = (R0+R0)<<1; 27 R0 = (R0+R1)<<1; 28 R2 = (R2+R0)<<1; 29 R1 = (R1+R2)<<1; 30 31 //R0 = (R2+R0)<<1; 32 33 34 //Dreg = (Dreg + Dreg) << 2 ; /* dest_reg = (dest_reg + src_reg) x 4 (a) */ 35 R0 = (R0+R0)<<2; 36 R0 = (R0+R1)<<2; 37 R2 = (R2+R0)<<2; 38 R1 = (R1+R2)<<2; 39 40 //R0 = (R2+R0)<<2; 41 42 //Preg = Preg + ( Preg << 1 ) ; /* adder_pntr + (src_pntr x 2) (a) */ 43 P0 = P0 + (P0 << 1); 44 P0 = P0 + (P1 << 1); 45 P0 = P0 + (P2 << 1); 46 P0 = P1 + (P2 << 1); 47 P0 = P2 + (P3 << 1); 48 P1 = P0 + (P0 << 1); 49 P1 = P0 + (P1 << 1); 50 P1 = P0 + (P2 << 1); 51 P1 = P1 + (P2 << 1); 52 P1 = P2 + (P3 << 1); 53 54 //Preg = Preg + ( Preg << 2 ) ; /* adder_pntr + (src_pntr x 4) (a) */ 55 P0 = P0 + (P0 << 2); 56 P0 = P0 + (P1 << 2); 57 P0 = P0 + (P2 << 2); 58 P0 = P1 + (P2 << 2); 59 P0 = P2 + (P3 << 2); 60 P1 = P0 + (P0 << 2); 61 P1 = P0 + (P1 << 2); 62 P1 = P0 + (P2 << 2); 63 P1 = P1 + (P2 << 2); 64 P1 = P2 + (P3 << 2); 65 66 //Dreg >>>= uimm5 ; /* arithmetic right shift (a) */ 67 R0 >>>= 0; 68 R0 >>>= 31; 69 R0 >>>= 5; 70 R5 >>>= 0; 71 R5 >>>= 31; 72 R5 >>>= 5; 73 74 //Dreg <<= uimm5 ; /* logical left shift (a) */ 75 R0 <<= 0; 76 R0 <<= 31; 77 R0 <<= 5; 78 R5 <<= 0; 79 R5 <<= 31; 80 R5 <<= 5; 81 //Dreg_lo_hi = Dreg_lo_hi >>> uimm4 ; /* arithmetic right shift (b) */ 82 R0.L = R0.L >>> 0; 83 R0.L = R0.L >>> 15; 84 R0.L = R0.H >>> 0; 85 R0.L = R0.H >>> 15; 86 R0.H = R0.L >>> 0; 87 R0.H = R0.L >>> 15; 88 R0.H = R0.H >>> 0; 89 R0.H = R0.H >>> 15; 90 91 R0.L = R1.L >>> 0; 92 R0.L = R1.L >>> 15; 93 R0.L = R1.H >>> 0; 94 R0.L = R1.H >>> 15; 95 R0.H = R1.L >>> 0; 96 R0.H = R1.L >>> 15; 97 R0.H = R1.H >>> 0; 98 R0.H = R1.H >>> 15; 99 100 R0.L = R7.L >>> 0; 101 R1.L = R6.L >>> 15; 102 R2.L = R5.H >>> 0; 103 R3.L = R4.H >>> 15; 104 R4.H = R3.L >>> 0; 105 R5.H = R2.L >>> 15; 106 R6.H = R1.H >>> 0; 107 R7.H = R0.H >>> 15; 108 109 //Dreg_lo_hi = Dreg_lo_hi << uimm4 (S) ; /* arithmetic left shift (b) */ 110 R0.L = R0.L << 0(S); 111 R0.L = R0.L << 15(S); 112 R0.L = R0.H << 0(S); 113 R0.L = R0.H << 15(S); 114 R0.H = R0.L << 0(S); 115 R0.H = R0.L << 15(S); 116 R0.H = R0.H << 0(S); 117 R0.H = R0.H << 15(S); 118 119 R0.L = R1.L << 0(S); 120 R0.L = R1.L << 15(S); 121 R0.L = R1.H << 0(S); 122 R0.L = R1.H << 15(S); 123 R0.H = R1.L << 0(S); 124 R0.H = R1.L << 15(S); 125 R0.H = R1.H << 0(S); 126 R0.H = R1.H << 15(S); 127 128 R0.L = R7.L << 0(S); 129 R1.L = R6.L << 15(S); 130 R2.L = R5.H << 0(S); 131 R3.L = R4.H << 15(S); 132 R4.H = R3.L << 0(S); 133 R5.H = R2.L << 15(S); 134 R6.H = R1.H << 0(S); 135 R7.H = R0.H << 15(S); 136 //Dreg = Dreg >>> uimm5 ; /* arithmetic right shift (b) */ 137 R0 = R0 >>> 0; 138 R0 = R0 >>> 31; 139 R0 = R1 >>> 0; 140 R0 = R1 >>> 31; 141 R7 = R0 >>> 0; 142 R6 = R1 >>> 31; 143 R5 = R2 >>> 0; 144 R4 = R3 >>> 31; 145 R3 = R4 >>> 0; 146 R2 = R5 >>> 31; 147 R1 = R6 >>> 0; 148 R0 = R7 >>> 31; 149 150 //Dreg = Dreg << uimm5 (S) ; /* arithmetic left shift (b) */ 151 R0 = R0 << 0(S); 152 R0 = R0 << 31(S); 153 R0 = R1 << 0(S); 154 R0 = R1 << 31(S); 155 R7 = R0 << 0(S); 156 R6 = R1 << 31(S); 157 R5 = R2 << 0(S); 158 R4 = R3 << 31(S); 159 R3 = R4 << 0(S); 160 R2 = R5 << 31(S); 161 R1 = R6 << 0(S); 162 R0 = R7 << 31(S); 163 //A0 = A0 >>> uimm5 ; /* arithmetic right shift (b) */ 164 A0 = A0 >>> 0; 165 A0 = A0 >>> 15; 166 A0 = A0 >>> 31; 167 168 //A0 = A0 << uimm5 ; /* logical left shift (b) */ 169 A0 = A0 << 0; 170 A0 = A0 << 15; 171 A0 = A0 << 31; 172 173 //A1 = A1 >>> uimm5 ; /* arithmetic right shift (b) */ 174 A1 = A1 >>> 0; 175 A1 = A1 >>> 15; 176 A1 = A1 >>> 31; 177 178 //A1 = A1 << uimm5 ; /* logical left shift (b) */ 179 A1 = A1 << 0; 180 A1 = A1 << 15; 181 A1 = A1 << 31; 182 183 //Dreg >>>= Dreg ; /* arithmetic right shift (a) */ 184 R0 >>>= R0; 185 R0 >>>= R1; 186 R1 >>>= R0; 187 R1 >>>= R7; 188 189 //Dreg <<= Dreg ; /* logical left shift (a) */ 190 R0 <<= R0; 191 R0 <<= R1; 192 R1 <<= R0; 193 R1 <<= R7; 194 195 //Dreg_lo_hi = ASHIFT Dreg_lo_hi BY Dreg_lo (opt_sat) ; /* arithmetic right shift (b) */ 196 r3.l = ashift r0.h by r7.l ; /* shift, half-word */ 197 r3.h = ashift r0.l by r7.l ; 198 r3.h = ashift r0.h by r7.l ; 199 r3.l = ashift r0.l by r7.l ; 200 r3.l = ashift r0.h by r7.l(s) ; /* shift, half-word, saturated */ 201 r3.h = ashift r0.l by r7.l(s) ; /* shift, half-word, saturated */ 202 r3.h = ashift r0.h by r7.l(s) ; 203 r3.l = ashift r0.l by r7.l (s) ; 204 205 //Dreg = ASHIFT Dreg BY Dreg_lo (opt_sat) ; /* arithmetic right shift (b) */ 206 r4 = ashift r2 by r7.l ; /* shift, word */ 207 r4 = ashift r2 by r7.l (s) ; /* shift, word, saturated */ 208 209 //A0 = ASHIFT A0 BY Dreg_lo ; /* arithmetic right shift (b)*/ 210 A0 = ashift A0 by r7.l ; /* shift, Accumulator */ 211 212 //A1 = ASHIFT A1 BY Dreg_lo ; /* arithmetic right shift (b)*/ 213 A1 = ashift A1 by r7.l ; /* shift, Accumulator */ 214 215 p3 = p2 >> 1 ; /* pointer right shift by 1 */ 216 p3 = p3 >> 2 ; /* pointer right shift by 2 */ 217 p4 = p5 << 1 ; /* pointer left shift by 1 */ 218 p0 = p1 << 2 ; /* pointer left shift by 2 */ 219 r3 >>= 17 ; /* data right shift */ 220 r3 <<= 17 ; /* data left shift */ 221 r3.l = r0.l >> 4 ; /* data right shift, half-word register */ 222 r3.l = r0.h >> 4 ; /* same as above; half-word register combinations are arbitrary */ 223 r3.h = r0.l << 12 ; /* data left shift, half-word register */ 224 r3.h = r0.h << 14 ; /* same as above; half-word register combinations are arbitrary */ 225 226 r3 = r6 >> 4 ; /* right shift, 32-bit word */ 227 r3 = r6 << 4 ; /* left shift, 32-bit word */ 228 229 a0 = a0 >> 7 ; /* Accumulator right shift */ 230 a1 = a1 >> 25 ; /* Accumulator right shift */ 231 a0 = a0 << 7 ; /* Accumulator left shift */ 232 a1 = a1 << 14 ; /* Accumulator left shift */ 233 234 r3 >>= r0 ; /* data right shift */ 235 r3 <<= r1 ; /* data left shift */ 236 237 r3.l = lshift r0.l by r2.l ; /* shift direction controlled by sign of R2.L */ 238 r3.h = lshift r0.l by r2.l ; 239 240 a0 = lshift a0 by r7.l ; 241 a1 = lshift a1 by r7.l ; 242 243 r4 = rot r1 by 31 ; /* rotate left */ 244 r4 = rot r1 by -32 ; /* rotate right */ 245 r4 = rot r1 by 5 ; /* rotate right */ 246 247 a0 = rot a0 by 22 ; /* rotate Accumulator left */ 248 a0 = rot a0 by -32 ; /* rotate Accumulator left */ 249 a0 = rot a0 by 31 ; /* rotate Accumulator left */ 250 251 a1 = rot a1 by -32 ; /* rotate Accumulator right */ 252 a1 = rot a1 by 31 ; /* rotate Accumulator right */ 253 a1 = rot a1 by 22 ; /* rotate Accumulator right */ 254 255 r4 = rot r1 by r2.l ; 256 a0 = rot a0 by r3.l ; 257 a1 = rot a1 by r7.l ; 258 259 r0.l = r1.l << 0; 260 r0.l = r1.l << 1; 261 r0.l = r1.l << 2; 262 r0.l = r1.l << 4; 263 r0.l = r1.l >> 0; 264 r0.l = r1.l >> 1; 265 r0.l = r1.l >> 2; 266 r0.l = r1.l >> 4; 267 r0.l = r1.l >>> 1; 268 r0.l = r1.l >>> 2; 269 r0.l = r1.l >>> 4; 270 271 r0.l = r1.h << 0; 272 r0.l = r1.h << 1; 273 r0.l = r1.h << 2; 274 r0.l = r1.h << 4; 275 r0.l = r1.h >> 0; 276 r0.l = r1.h >> 1; 277 r0.l = r1.h >> 2; 278 r0.l = r1.h >> 4; 279 r0.l = r1.h >>> 1; 280 r0.l = r1.h >>> 2; 281 r0.l = r1.h >>> 4; 282 283 r0.l = r1.h << 0 (S); 284 r0.l = r1.h << 1 (S); 285 r0.l = r1.h << 2 (S); 286 r0.l = r1.h << 4 (S); 287 r0.l = r1.h >>> 1 (S); 288 r0.l = r1.h >>> 2 (S); 289 r0.l = r1.h >>> 4 (S); 290 291
