52 lines
880 B
ArmAsm
52 lines
880 B
ArmAsm
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# Blackfin testcase for factorial
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# mach: bfin
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.include "testutils.inc"
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start
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.macro factorial num:req answer:req
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R0 = \num (Z);
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CALL _fact;
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imm32 r1, \answer;
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CC = R1 == R0;
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if CC JUMP 1f;
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fail
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1:
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.endm
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_test:
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factorial 1 1
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factorial 2 2
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factorial 3 6
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factorial 4 24
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factorial 5 120
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factorial 6 720
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factorial 7 5040
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factorial 8 40320
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factorial 9 362880
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factorial 10 3628800
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factorial 11 39916800
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factorial 12 479001600
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# This is the real answer, but it overflows 32bits. Since gas itself
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# likes to choke on 64bit values when compiled for 32bit systems, just
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# specify the truncated 32bit value since that's what the Blackfin will
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# come up with too.
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# factorial 13 6227020800
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factorial 13 1932053504
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pass
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_fact:
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LINK 0;
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[ -- SP ] = R7;
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CC = R0 < 2;
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IF CC JUMP 1f;
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R7 = R0;
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R0 += -1;
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CALL _fact;
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R0 *= R7;
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1:
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R7 = [ SP ++ ];
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UNLINK;
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RTS;
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