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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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