92 lines
1.4 KiB
ArmAsm
92 lines
1.4 KiB
ArmAsm
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// Test extraction from accumulators:
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// ROUND/TRUNCATE in SIGNED FRACTIONAL mode
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// test ops: "+="
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# mach: bfin
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.include "testutils.inc"
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start
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// load r0=0x7ffef000
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// load r1=0x7ffff000
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// load r2=0x00008000
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// load r3=0x00018000
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// load r4=0x0000007f
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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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// round
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// 0x007ffef00 -> 0x7fff
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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;
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DBGA ( R5.L , 0x7fff );
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DBGA ( R5.H , 0x7fff );
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// round with ovflw
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// 0x007ffff00 -> 0x7fff
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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;
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DBGA ( R5.L , 0x7fff );
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DBGA ( R5.H , 0x7fff );
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// trunc
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// 0x007ffef00 -> 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 (T);
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DBGA ( R5.L , 0x7ffe );
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DBGA ( R5.H , 0x7ffe );
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// round with ovflw
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// 0x7f7ffff00 -> 0x7fff
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A1 = A0 = 0;
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A1.w = R1;
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A1.x = R4.L;
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A0.w = R1;
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A0.x = R4.L;
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R5.H = A1, R5.L = A0;
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DBGA ( R5.L , 0x7fff );
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DBGA ( R5.H , 0x7fff );
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// round, nearest even is zero
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// 0x0000008000 -> 0x0000
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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;
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DBGA ( R5.L , 0x0 );
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DBGA ( R5.H , 0x0 );
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// round, nearest even is 2
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// 0x00000018000 -> 0x0002
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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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R5.H = A1, R5.L = A0;
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DBGA ( R5.L , 0x2 );
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DBGA ( R5.H , 0x2 );
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pass
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.data
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data0:
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.dw 0xf000
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.dw 0x7ffe
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.dw 0xf000
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.dw 0x7ffe
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.dw 0x8000
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.dw 0x0000
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.dw 0x8000
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.dw 0x0001
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.dw 0x007f
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.dw 0x0000
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