| // Test extraction from accumulators: |
| // SCALE in SIGNED FRACTIONAL mode |
| # mach: bfin |
| |
| .include "testutils.inc" |
| start |
| |
| |
| // load r0=0x3fff0000 |
| // load r1=0x0fffc000 |
| // load r2=0x7ff00000 |
| // load r3=0x80100000 |
| // load r4=0x000000ff |
| loadsym P0, data0; |
| R0 = [ P0 ++ ]; |
| R1 = [ P0 ++ ]; |
| R2 = [ P0 ++ ]; |
| R3 = [ P0 ++ ]; |
| R4 = [ P0 ++ ]; |
| |
| // SCALE |
| // 0x003fff0000 -> SCALE 0x7ffe |
| A1 = A0 = 0; |
| A1.w = R0; |
| A0.w = R0; |
| R5.H = A1, R5.L = A0 (S2RND); |
| DBGA ( R5.L , 0x7ffe ); |
| DBGA ( R5.H , 0x7ffe ); |
| |
| // SCALE |
| // 0x000fffc000 -> SCALE 0x2000 |
| A1 = A0 = 0; |
| A1.w = R1; |
| A0.w = R1; |
| R5.H = A1, R5.L = A0 (S2RND); |
| DBGA ( R5.L , 0x2000 ); |
| DBGA ( R5.H , 0x2000 ); |
| |
| // SCALE |
| // 0x007ff00000 -> SCALE 0x7fff |
| A1 = A0 = 0; |
| A1.w = R2; |
| A0.w = R2; |
| R5.H = A1, R5.L = A0 (S2RND); |
| DBGA ( R5.L , 0x7fff ); |
| DBGA ( R5.H , 0x7fff ); |
| |
| // SCALE |
| // 0xff80100000 -> SCALE 0x8000 |
| A1 = A0 = 0; |
| A1.w = R3; |
| A0.w = R3; |
| A1.x = R4.L; |
| A0.x = R4.L; |
| R5.H = A1, R5.L = A0 (S2RND); |
| DBGA ( R5.L , 0x8000 ); |
| DBGA ( R5.H , 0x8000 ); |
| |
| pass |
| |
| .data; |
| data0: |
| .dw 0x0000 |
| .dw 0x3fff |
| .dw 0xc000 |
| .dw 0x0fff |
| .dw 0x0000 |
| .dw 0x7ff0 |
| .dw 0x0000 |
| .dw 0x8010 |
| .dw 0x00ff |
| .dw 0x0000 |