derek.holloway
7502bf64a4
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84 lines
1.7 KiB
ArmAsm
84 lines
1.7 KiB
ArmAsm
// Test ALU RND RND12 RND20
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# mach: bfin
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.include "testutils.inc"
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start
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// positive saturation
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R0 = 0xffffffff;
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A0.w = R0;
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A1.w = R0;
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R0 = 0x7f (X);
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A0.x = R0;
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A1.x = R0;
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R3 = A1 + A0, R4 = A1 - A0 (S);
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DBGA ( R3.H , 0x7fff ); DBGA ( R3.L , 0xffff );
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DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
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// neg saturation
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R0 = 0;
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A0.w = R0;
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A1.w = R0;
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R0 = 0x80 (X);
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A0.x = R0;
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A1.x = R0;
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R3 = A1 + A0, R4 = A1 - A0 (S);
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DBGA ( R3.H , 0x8000 ); DBGA ( R3.L , 0x0000 );
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DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
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// positive saturation
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R0 = 0xfffffff0;
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A0.w = R0;
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A1.w = R0;
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R0 = 0x01;
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A0.x = R0;
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A1.x = R0;
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R3 = A1 + A0, R4 = A1 - A0 (S);
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DBGA ( R3.H , 0x7fff ); DBGA ( R3.L , 0xffff );
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DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
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// no sat
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R0 = 0xfffffff0;
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A0.w = R0;
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A1.w = R0;
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R0 = 0x01;
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A0.x = R0;
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A1.x = R0;
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R3 = A1 + A0, R4 = A1 - A0 (NS);
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DBGA ( R3.H , 0xffff ); DBGA ( R3.L , 0xffe0 );
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DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0000 );
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// add and sub +1 -1
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R0 = 0x00000001;
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A0.w = R0;
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R0 = 0xffffffff;
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A1.w = R0;
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R0 = 0;
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A0.x = R0;
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R0 = 0xff (X);
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A1.x = R0;
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R3 = A1 + A0, R4 = A1 - A0 (NS);
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DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); // 0
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DBGA ( R4.H , 0xffff ); DBGA ( R4.L , 0xfffe ); // -2
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// should get the same with saturation
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R3 = A1 + A0, R4 = A1 - A0 (S);
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DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 ); // 0
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DBGA ( R4.H , 0xffff ); DBGA ( R4.L , 0xfffe ); // -2
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// add and sub -1 +1 but with reverse order of A0 A1
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R0 = 0x00000001;
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A0.w = R0;
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R0 = 0xffffffff;
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A1.w = R0;
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R0 = 0;
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A0.x = R0;
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R0 = 0xff (X);
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A1.x = R0;
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R3 = A0 + A1, R4 = A0 - A1 (NS);
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DBGA ( R3.H , 0x0000 ); DBGA ( R3.L , 0x0000 );
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DBGA ( R4.H , 0x0000 ); DBGA ( R4.L , 0x0002 );
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pass
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