| // Test result extraction of mac instructions. |
| // Test basic edge values |
| // SIGNED INTEGER mode into SINGLE destination register |
| // test ops: "+=" |
| # mach: bfin |
| |
| .include "testutils.inc" |
| start |
| |
| |
| // load r0=0x80000001 |
| // 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 ++ ]; |
| |
| // integer extraction with no saturation |
| // 0x1 * 0x1 = 0x0000000001 -> 0x1 |
| A1 = A0 = 0; |
| R5.H = (A1 += R0.L * R0.L), R5.L = (A0 += R0.L * R0.L) (IS); |
| DBGA ( R5.L , 0x1 ); |
| DBGA ( R5.H , 0x1 ); |
| |
| // integer extraction with positive saturation |
| // 0x7fff * 0x7f -> 0x7fff |
| A1 = A0 = 0; |
| R5.H = (A1 += R1.L * R3.L), R5.L = (A0 += R1.L * R3.L) (IS); |
| DBGA ( R5.L , 0x7fff ); |
| DBGA ( R5.H , 0x7fff ); |
| |
| // integer extraction with negative saturation |
| // 0x8000 * 0x7f -> 0x8000 |
| A1 = A0 = 0; |
| R5.H = (A1 += R1.H * R3.L), R5.L = (A0 += R1.H * R3.L) (IS); |
| DBGA ( R5.L , 0x8000 ); |
| DBGA ( R5.H , 0x8000 ); |
| |
| pass |
| |
| .data; |
| data0: |
| .dw 0x0001 |
| .dw 0x8000 |
| .dw 0x7fff |
| .dw 0x8000 |
| .dw 0x0000 |
| .dw 0xf000 |
| .dw 0x007f |
| .dw 0x0000 |
| .dw 0x0080 |
| .dw 0x0000 |
