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- /* ALU test program.
- * Test instructions
- * r7 = +/- (r0,r1);
- * r7 = -/+ (r0,r1);
- * r7 = -/- (r0,r1);
- */
- # mach: bfin
- .include "testutils.inc"
- start
- // test subtraction
- R0.L = 0x000f;
- R0.H = 0x0010;
- R1.L = 0x000f;
- R1.H = 0x0010;
- R7 = 0;
- ASTAT = R7;
- R7 = R0 +|- R1;
- DBGA ( R7.L , 0x0000 );
- DBGA ( R7.H , 0x0020 );
- CC = AZ; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = AN; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = V; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = AC0; R7 = CC; DBGA ( R7.L , 0x1 );
- // test overflow negative on subtraction
- R0.L = 0x8000;
- R0.H = 0x0010;
- R1.L = 0x0001;
- R1.H = 0x0010;
- R7 = 0;
- ASTAT = R7;
- R7 = R0 +|- R1;
- DBGA ( R7.L , 0x7fff );
- DBGA ( R7.H , 0x0020 );
- CC = AZ; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = AN; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = V; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = AC0; R7 = CC; DBGA ( R7.L , 0x1 );
- // test saturate negative on subtraction +/-
- R0.L = 0x8000;
- R0.H = 0x0010;
- R1.L = 0x0001;
- R1.H = 0x0010;
- R7 = 0;
- ASTAT = R7;
- R7 = R0 +|- R1 (S);
- DBGA ( R7.L , 0x8000 );
- DBGA ( R7.H , 0x0020 );
- CC = AZ; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = AN; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = V; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = AC0; R7 = CC; DBGA ( R7.L , 0x1 );
- // test saturate negative on subtraction -/+
- R0.L = 0x8000;
- R0.H = 0x8000;
- R1.L = 0x0001;
- R1.H = 0x0001;
- R7 = 0;
- ASTAT = R7;
- R7 = R0 -|+ R1 (S);
- DBGA ( R7.L , 0x8001 );
- DBGA ( R7.H , 0x8000 );
- CC = AZ; R5 = CC; DBGA ( R5.L , 0x0 );
- CC = AN; R5 = CC; DBGA ( R5.L , 0x1 );
- CC = V; R5 = CC; DBGA ( R5.L , 0x1 );
- CC = AC0; R5 = CC; DBGA ( R5.L , 0x0 );
- // test saturate negative on subtraction -/-
- R0.L = 0x8000;
- R0.H = 0x8000;
- R1.L = 0x0001;
- R1.H = 0x0001;
- R7 = 0;
- ASTAT = R7;
- R7 = R0 -|- R1 (S);
- DBGA ( R7.L , 0x8000 );
- DBGA ( R7.H , 0x8000 );
- CC = AZ; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = AN; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = V; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = AC0; R7 = CC; DBGA ( R7.L , 0x1 );
- // test saturate positive on subtraction -/+
- R0.L = 0x7fff;
- R0.H = 0x7fff;
- R1.L = 0xffff;
- R1.H = 0xffff;
- R7 = 0;
- ASTAT = R7;
- R7 = R0 -|+ R1 (S);
- DBGA ( R7.L , 0x7ffe );
- DBGA ( R7.H , 0x7fff );
- CC = AZ; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = AN; R7 = CC; DBGA ( R7.L , 0x0 );
- CC = V; R7 = CC; DBGA ( R7.L , 0x1 );
- CC = AC0; R7 = CC; DBGA ( R7.L , 0x1 );
- pass
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