derek.holloway
7502bf64a4
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73 lines
1.1 KiB
ArmAsm
73 lines
1.1 KiB
ArmAsm
// Test extraction from accumulators:
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// SCALE in SIGNED FRACTIONAL mode
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# mach: bfin
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.include "testutils.inc"
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start
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// load r0=0x3fff0000
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// load r1=0x0fffc000
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// load r2=0x7ff00000
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// load r3=0x80100000
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// load r4=0x000000ff
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loadsym P0, data0;
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R0 = [ P0 ++ ];
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R1 = [ P0 ++ ];
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R2 = [ P0 ++ ];
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R3 = [ P0 ++ ];
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R4 = [ P0 ++ ];
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// SCALE
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// 0x003fff0000 -> SCALE 0x7ffe
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A1 = A0 = 0;
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A1.w = R0;
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A0.w = R0;
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R5.H = A1, R5.L = A0 (S2RND);
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DBGA ( R5.L , 0x7ffe );
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DBGA ( R5.H , 0x7ffe );
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// SCALE
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// 0x000fffc000 -> SCALE 0x2000
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A1 = A0 = 0;
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A1.w = R1;
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A0.w = R1;
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R5.H = A1, R5.L = A0 (S2RND);
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DBGA ( R5.L , 0x2000 );
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DBGA ( R5.H , 0x2000 );
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// SCALE
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// 0x007ff00000 -> SCALE 0x7fff
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A1 = A0 = 0;
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A1.w = R2;
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A0.w = R2;
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R5.H = A1, R5.L = A0 (S2RND);
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DBGA ( R5.L , 0x7fff );
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DBGA ( R5.H , 0x7fff );
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// SCALE
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// 0xff80100000 -> SCALE 0x8000
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A1 = A0 = 0;
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A1.w = R3;
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A0.w = R3;
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A1.x = R4.L;
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A0.x = R4.L;
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R5.H = A1, R5.L = A0 (S2RND);
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DBGA ( R5.L , 0x8000 );
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DBGA ( R5.H , 0x8000 );
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pass
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.data;
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data0:
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.dw 0x0000
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.dw 0x3fff
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.dw 0xc000
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.dw 0x0fff
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.dw 0x0000
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.dw 0x7ff0
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.dw 0x0000
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.dw 0x8010
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.dw 0x00ff
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.dw 0x0000
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