| // Test ALU RND RND12 RND20 |
| # mach: bfin |
| |
| .include "testutils.inc" |
| start |
| |
| |
| // positive saturation |
| R0 = 0xffffffff; |
| A0.w = R0; |
| A1.w = R0; |
| R0 = 0x7f (X); |
| A0.x = R0; |
| A1.x = R0; |
| R3 = A1 + A0, R4 = A1 - A0 (S); |
| DBGA ( R3.H , 0x7fff ); DBGA ( R3.L , 0xffff ); |
| DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 ); |
| |
| // neg saturation |
| R0 = 0; |
| A0.w = R0; |
| A1.w = R0; |
| R0 = 0x80 (X); |
| A0.x = R0; |
| A1.x = R0; |
| R3 = A1 + A0, R4 = A1 - A0 (S); |
| DBGA ( R3.H , 0x8000 ); DBGA ( R3.L , 0x0000 ); |
| DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 ); |
| |
| // positive saturation |
| R0 = 0xfffffff0; |
| A0.w = R0; |
| A1.w = R0; |
| R0 = 0x01; |
| A0.x = R0; |
| A1.x = R0; |
| R3 = A1 + A0, R4 = A1 - A0 (S); |
| DBGA ( R3.H , 0x7fff ); DBGA ( R3.L , 0xffff ); |
| DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 ); |
| |
| // no sat |
| R0 = 0xfffffff0; |
| A0.w = R0; |
| A1.w = R0; |
| R0 = 0x01; |
| A0.x = R0; |
| A1.x = R0; |
| R3 = A1 + A0, R4 = A1 - A0 (NS); |
| DBGA ( R3.H , 0xffff ); DBGA ( R3.L , 0xffe0 ); |
| DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 ); |
| |
| // add and sub +1 -1 |
| R0 = 0x00000001; |
| A0.w = R0; |
| R0 = 0xffffffff; |
| A1.w = R0; |
| R0 = 0; |
| A0.x = R0; |
| R0 = 0xff (X); |
| A1.x = R0; |
| R3 = A1 + A0, R4 = A1 - A0 (NS); |
| DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); // 0 |
| DBGA ( R4.H , 0xffff ); DBGA ( R4.L , 0xfffe ); // -2 |
| |
| // should get the same with saturation |
| R3 = A1 + A0, R4 = A1 - A0 (S); |
| DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); // 0 |
| DBGA ( R4.H , 0xffff ); DBGA ( R4.L , 0xfffe ); // -2 |
| |
| // add and sub -1 +1 but with reverse order of A0 A1 |
| R0 = 0x00000001; |
| A0.w = R0; |
| R0 = 0xffffffff; |
| A1.w = R0; |
| R0 = 0; |
| A0.x = R0; |
| R0 = 0xff (X); |
| A1.x = R0; |
| R3 = A0 + A1, R4 = A0 - A1 (NS); |
| DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); |
| DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0002 ); |
| |
| pass |