| // MAC test program. |
| // Test basic edge values |
| // SIGNED INTEGER mode |
| // test ops: "+=" "-=" "=" "NOP" |
| # mach: bfin |
| |
| .include "testutils.inc" |
| start |
| |
| |
| // load r0=0x80007fff |
| // load r1=0x80007fff |
| // load r2=0xf0000000 |
| // load r3=0x0000007f |
| // load r4=0x00000080 |
| loadsym P0, data0; |
| R0 = [ P0 ++ ]; |
| R1 = [ P0 ++ ]; |
| R2 = [ P0 ++ ]; |
| R3 = [ P0 ++ ]; |
| R4 = [ P0 ++ ]; |
| |
| // 0x7fff * 0x7fff = 0x003fff0001 |
| A1 = A0 = 0; |
| A1 += R0.L * R1.L, A0 += R0.L * R1.L (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0x0001 ); |
| DBGA ( R6.H , 0x3fff ); |
| DBGA ( R7.L , 0x0000 ); |
| |
| // 0x8000 * 0x7fff = 0xffc0008000 |
| A1 = A0 = 0; |
| A1 += R0.H * R1.L, A0 += R0.H * R1.L (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0x8000 ); |
| DBGA ( R6.H , 0xc000 ); |
| DBGA ( R7.L , 0xffff ); |
| |
| // 0x8000 * 0x8000 = 0x0040000000 |
| A1 = A0 = 0; |
| A1 += R0.H * R1.H, A0 += R0.H * R1.H (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0x0000 ); |
| DBGA ( R6.H , 0x4000 ); |
| DBGA ( R7.L , 0x0000 ); |
| |
| // saturate positive by first loading large value into accums |
| // expected value is 0x7fffffffff |
| A1 = A0 = 0; |
| A1.w = R2; |
| A1.x = R3.L; |
| A0.w = R2; |
| A0.x = R3.L; |
| A1 += R0.L * R1.L, A0 += R0.L * R1.L (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0xffff ); |
| DBGA ( R6.H , 0xffff ); |
| DBGA ( R7.L , 0x007f ); |
| |
| // saturate negative |
| // expected value is 0x8000000000 |
| A1 = A0 = 0; |
| A1.x = R4.L; |
| A0.x = R4.L; |
| A1 += R0.L * R1.H, A0 += R0.L * R1.H (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0x0000 ); |
| DBGA ( R6.H , 0x0000 ); |
| DBGA ( R7.L , 0xff80 ); |
| |
| // saturate positive with "-=" |
| // expected value is 0x7fffffffff |
| A1 = A0 = 0; |
| A1.w = R2; |
| A1.x = R3.L; |
| A0.w = R2; |
| A0.x = R3.L; |
| A1 -= R0.H * R1.L, A0 -= R0.H * R1.L (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0xffff ); |
| DBGA ( R6.H , 0xffff ); |
| DBGA ( R7.L , 0x007f ); |
| |
| // saturate negative with "-=" |
| // expected value is 0x8000000000 |
| A1 = A0 = 0; |
| A1.x = R4.L; |
| A0.x = R4.L; |
| A1 -= R0.L * R1.L, A0 -= R0.L * R1.L (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0x0000 ); |
| DBGA ( R6.H , 0x0000 ); |
| DBGA ( R7.L , 0xff80 ); |
| |
| // 0x8000 * 0x8000 = 0xffc0000000 with "-=" |
| A1 = A0 = 0; |
| A1 -= R0.H * R1.H, A0 -= R0.H * R1.H (IS); |
| R6 = A1.w; |
| R7.L = A1.x; |
| DBGA ( R6.L , 0x0000 ); |
| DBGA ( R6.H , 0xc000 ); |
| DBGA ( R7.L , 0xffff ); |
| |
| pass |
| |
| .data 0x1000; |
| data0: |
| .dw 0x7fff |
| .dw 0x8000 |
| .dw 0x7fff |
| .dw 0x8000 |
| .dw 0x0000 |
| .dw 0xf000 |
| .dw 0x007f |
| .dw 0x0000 |
| .dw 0x0080 |
| .dw 0x0000 |
