| // Test extraction from accumulators: |
| // ROUND/TRUNCATE in SIGNED FRACTIONAL mode |
| // test ops: "+=" |
| # mach: bfin |
| |
| .include "testutils.inc" |
| start |
| |
| |
| // load r0=0x7ffef000 |
| // load r1=0x7ffff000 |
| // load r2=0x00008000 |
| // load r3=0x00018000 |
| // load r4=0x0000007f |
| loadsym P0, data0; |
| R0 = [ P0 ++ ]; |
| R1 = [ P0 ++ ]; |
| R2 = [ P0 ++ ]; |
| R3 = [ P0 ++ ]; |
| R4 = [ P0 ++ ]; |
| |
| // round |
| // 0x007ffef00 -> 0x7fff |
| A1 = A0 = 0; |
| A1.w = R0; |
| A0.w = R0; |
| R5.H = A1, R5.L = A0; |
| DBGA ( R5.L , 0x7fff ); |
| DBGA ( R5.H , 0x7fff ); |
| |
| // round with ovflw |
| // 0x007ffff00 -> 0x7fff |
| A1 = A0 = 0; |
| A1.w = R1; |
| A0.w = R1; |
| R5.H = A1, R5.L = A0; |
| DBGA ( R5.L , 0x7fff ); |
| DBGA ( R5.H , 0x7fff ); |
| |
| // trunc |
| // 0x007ffef00 -> 0x7ffe |
| A1 = A0 = 0; |
| A1.w = R0; |
| A0.w = R0; |
| R5.H = A1, R5.L = A0 (T); |
| DBGA ( R5.L , 0x7ffe ); |
| DBGA ( R5.H , 0x7ffe ); |
| |
| // round with ovflw |
| // 0x7f7ffff00 -> 0x7fff |
| A1 = A0 = 0; |
| A1.w = R1; |
| A1.x = R4.L; |
| A0.w = R1; |
| A0.x = R4.L; |
| R5.H = A1, R5.L = A0; |
| DBGA ( R5.L , 0x7fff ); |
| DBGA ( R5.H , 0x7fff ); |
| |
| // round, nearest even is zero |
| // 0x0000008000 -> 0x0000 |
| A1 = A0 = 0; |
| A1.w = R2; |
| A0.w = R2; |
| R5.H = A1, R5.L = A0; |
| DBGA ( R5.L , 0x0 ); |
| DBGA ( R5.H , 0x0 ); |
| |
| // round, nearest even is 2 |
| // 0x00000018000 -> 0x0002 |
| A1 = A0 = 0; |
| A1.w = R3; |
| A0.w = R3; |
| R5.H = A1, R5.L = A0; |
| DBGA ( R5.L , 0x2 ); |
| DBGA ( R5.H , 0x2 ); |
| |
| pass |
| |
| .data |
| data0: |
| .dw 0xf000 |
| .dw 0x7ffe |
| .dw 0xf000 |
| .dw 0x7ffe |
| .dw 0x8000 |
| .dw 0x0000 |
| .dw 0x8000 |
| .dw 0x0001 |
| .dw 0x007f |
| .dw 0x0000 |