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[9] | 1 | .sect .text; .sect .rom; .sect .data; .sect .bss
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| 2 | .sect .text
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| 3 | .define .inn
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| 4 |
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| 5 | ! #bytes in ecx
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| 6 | ! bit # in eax
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| 7 | .inn:
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| 8 | xor edx,edx
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| 9 | mov ebx,8
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| 10 | div ebx
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| 11 | mov ebx,esp
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| 12 | add ebx,4
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| 13 | add ebx,eax
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| 14 | cmp eax,ecx
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| 15 | jae 1f
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| 16 | movb al,(ebx)
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| 17 | mov ebx,edx
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| 18 | testb al,bits(ebx)
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| 19 | jz 1f
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| 20 | mov eax,1
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| 21 | jmp 2f
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| 22 | 1:
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| 23 | xor eax,eax
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| 24 | 2:
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| 25 | pop ebx
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| 26 | add esp,ecx
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| 27 | ! eax is result
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| 28 | jmp ebx
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| 29 |
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| 30 | .sect .rom
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| 31 | bits:
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| 32 | .data1 1,2,4,8,16,32,64,128
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