derek.holloway
7502bf64a4
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125 lines
2.3 KiB
ArmAsm
125 lines
2.3 KiB
ArmAsm
// MAC test program.
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// Test basic edge values
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// SIGNED INTEGER mode
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// test ops: "+=" "-=" "=" "NOP"
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# mach: bfin
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.include "testutils.inc"
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start
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// load r0=0x80007fff
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// load r1=0x80007fff
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// load r2=0xf0000000
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// load r3=0x0000007f
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// load r4=0x00000080
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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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// 0x7fff * 0x7fff = 0x003fff0001
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A1 = A0 = 0;
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A1 += R0.L * R1.L, A0 += R0.L * R1.L (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0x0001 );
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DBGA ( R6.H , 0x3fff );
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DBGA ( R7.L , 0x0000 );
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// 0x8000 * 0x7fff = 0xffc0008000
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A1 = A0 = 0;
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A1 += R0.H * R1.L, A0 += R0.H * R1.L (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0x8000 );
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DBGA ( R6.H , 0xc000 );
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DBGA ( R7.L , 0xffff );
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// 0x8000 * 0x8000 = 0x0040000000
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A1 = A0 = 0;
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A1 += R0.H * R1.H, A0 += R0.H * R1.H (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0x0000 );
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DBGA ( R6.H , 0x4000 );
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DBGA ( R7.L , 0x0000 );
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// saturate positive by first loading large value into accums
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// expected value is 0x7fffffffff
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A1 = A0 = 0;
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A1.w = R2;
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A1.x = R3.L;
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A0.w = R2;
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A0.x = R3.L;
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A1 += R0.L * R1.L, A0 += R0.L * R1.L (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0xffff );
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DBGA ( R6.H , 0xffff );
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DBGA ( R7.L , 0x007f );
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// saturate negative
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// expected value is 0x8000000000
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A1 = A0 = 0;
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A1.x = R4.L;
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A0.x = R4.L;
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A1 += R0.L * R1.H, A0 += R0.L * R1.H (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0x0000 );
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DBGA ( R6.H , 0x0000 );
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DBGA ( R7.L , 0xff80 );
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// saturate positive with "-="
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// expected value is 0x7fffffffff
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A1 = A0 = 0;
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A1.w = R2;
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A1.x = R3.L;
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A0.w = R2;
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A0.x = R3.L;
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A1 -= R0.H * R1.L, A0 -= R0.H * R1.L (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0xffff );
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DBGA ( R6.H , 0xffff );
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DBGA ( R7.L , 0x007f );
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// saturate negative with "-="
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// expected value is 0x8000000000
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A1 = A0 = 0;
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A1.x = R4.L;
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A0.x = R4.L;
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A1 -= R0.L * R1.L, A0 -= R0.L * R1.L (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0x0000 );
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DBGA ( R6.H , 0x0000 );
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DBGA ( R7.L , 0xff80 );
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// 0x8000 * 0x8000 = 0xffc0000000 with "-="
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A1 = A0 = 0;
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A1 -= R0.H * R1.H, A0 -= R0.H * R1.H (IS);
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R6 = A1.w;
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R7.L = A1.x;
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DBGA ( R6.L , 0x0000 );
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DBGA ( R6.H , 0xc000 );
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DBGA ( R7.L , 0xffff );
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pass
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.data 0x1000;
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data0:
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.dw 0x7fff
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.dw 0x8000
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.dw 0x7fff
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.dw 0x8000
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.dw 0x0000
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.dw 0xf000
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.dw 0x007f
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.dw 0x0000
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.dw 0x0080
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.dw 0x0000
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