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// Test ALU RND RND12 RND20
# mach: bfin
.include "testutils.inc"
start
// positive saturation
R0 = 0xffffffff;
A0.w = R0;
A1.w = R0;
R0 = 0x7f (X);
A0.x = R0;
A1.x = R0;
R3 = A1 + A0, R4 = A1 - A0 (S);
DBGA ( R3.H , 0x7fff ); DBGA ( R3.L , 0xffff );
DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
// neg saturation
R0 = 0;
A0.w = R0;
A1.w = R0;
R0 = 0x80 (X);
A0.x = R0;
A1.x = R0;
R3 = A1 + A0, R4 = A1 - A0 (S);
DBGA ( R3.H , 0x8000 ); DBGA ( R3.L , 0x0000 );
DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
// positive saturation
R0 = 0xfffffff0;
A0.w = R0;
A1.w = R0;
R0 = 0x01;
A0.x = R0;
A1.x = R0;
R3 = A1 + A0, R4 = A1 - A0 (S);
DBGA ( R3.H , 0x7fff ); DBGA ( R3.L , 0xffff );
DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
// no sat
R0 = 0xfffffff0;
A0.w = R0;
A1.w = R0;
R0 = 0x01;
A0.x = R0;
A1.x = R0;
R3 = A1 + A0, R4 = A1 - A0 (NS);
DBGA ( R3.H , 0xffff ); DBGA ( R3.L , 0xffe0 );
DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
// add and sub +1 -1
R0 = 0x00000001;
A0.w = R0;
R0 = 0xffffffff;
A1.w = R0;
R0 = 0;
A0.x = R0;
R0 = 0xff (X);
A1.x = R0;
R3 = A1 + A0, R4 = A1 - A0 (NS);
DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); // 0
DBGA ( R4.H , 0xffff ); DBGA ( R4.L , 0xfffe ); // -2
// should get the same with saturation
R3 = A1 + A0, R4 = A1 - A0 (S);
DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); // 0
DBGA ( R4.H , 0xffff ); DBGA ( R4.L , 0xfffe ); // -2
// add and sub -1 +1 but with reverse order of A0 A1
R0 = 0x00000001;
A0.w = R0;
R0 = 0xffffffff;
A1.w = R0;
R0 = 0;
A0.x = R0;
R0 = 0xff (X);
A1.x = R0;
R3 = A0 + A1, R4 = A0 - A1 (NS);
DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 );
DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0002 );
pass
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