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[/] [lxp32/] [trunk/] [verify/] [lxp32/] [src/] [firmware/] [test013.asm] - Rev 12
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/** Test division (divu, divs, modu, mods)*/lc r100, 0x10000000 // test result output pointerlc r101, haltlc r102, failurelc r103, 0x10000004// Test unsigned divisionlc r32, op1lc r33, op2lc r34, quotientlc r35, remainderlc r36, cnt_looplc r10, 100 // countercnt_loop:lw r0, r32lw r1, r33divu r2, r0, r1modu r3, r0, r1lw r4, r34lw r5, r35cjmpne r102, r2, r4 // failurecjmpne r102, r3, r5 // failuremul r6, r2, r1add r6, r6, r3cjmpne r102, r6, r0 // failureadd r32, r32, 4add r33, r33, 4add r34, r34, 4add r35, r35, 4sub r10, r10, 1cjmpug r36, r10, 0 // cnt_loopsw r103, 1// Test signed divisionlc r32, op1_signedlc r33, op2_signedlc r34, quotient_signedlc r35, remainder_signedlc r36, cnt_loop2lc r10, 100 // countercnt_loop2:lw r0, r32lw r1, r33divs r2, r0, r1mods r3, r0, r1lw r4, r34lw r5, r35cjmpne r102, r2, r4 // failurecjmpne r102, r3, r5 // failuremul r6, r2, r1add r6, r6, r3cjmpne r102, r6, r0 // failureadd r32, r32, 4add r33, r33, 4add r34, r34, 4add r35, r35, 4sub r10, r10, 1cjmpug r36, r10, 0 // cnt_loop2sw r103, 2// Random division/multiplication testmov r64, 1 // initial PRBS valuelc r65, 1103515245 // PRBS multiplierlc r66, 12345 // PRBS addition constantlc r67, 32767 // PRBS masklc r68, 16384lc r10, 1000lc r32, rnd_looplc r33, randlc r34, rnd_contrnd_loop:call r33 // randsub r1, r0, r68 // dividend in r1call r33 // randsub r2, r0, r68 // divisor in r2cjmpne r34, r2, 0 // rnd_contmov r2, 1rnd_cont:divs r3, r1, r2mods r4, r1, r2mul r5, r3, r2add r5, r5, r4cjmpne r102, r5, r1 // failuresub r10, r10, 1cjmpug r32, r10, 0 // rnd_loopsw r103, 3sw r100, 1jmp r101 // haltfailure:sw r100, 2halt:hltjmp r101 // halt// Linear congruent pseudo-random number generator (as in ISO/IEC 9899:1999)rand:mul r64, r64, r65add r64, r64, r66sru r0, r64, 16and r0, r0, r67retop1:.word 2227053353.word 4059122064.word 210189531.word 1203176988.word 2794175299.word 1562322232.word 219364165.word 1352278066.word 4130490642.word 1156715599.word 993179440.word 529260957.word 1235055289.word 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