69 lines
1.6 KiB
PHP
69 lines
1.6 KiB
PHP
; Sorting bunch of dwords, count = ecx, locating at address = edx,
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; comparison function at ebx
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; Destroy content of eax, ecx, esi, edi
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Sort:
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jecxz .Done
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mov eax,ecx
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@@:
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push eax
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call .Restore
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pop eax
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dec eax
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jnz @B
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@@:
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cmp ecx,1
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jz .Done
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mov esi,1
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mov edi,ecx
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call .Exchange
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dec ecx
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mov eax,1
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call .Restore
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jmp @B
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.Done:
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ret
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.Exchange:
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push eax ecx
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mov eax,[edx+esi*4-4]
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mov ecx,[edx+edi*4-4]
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mov [edx+esi*4-4],ecx
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mov [edx+edi*4-4],eax
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pop ecx eax
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ret
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.Restore:
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lea esi,[eax+eax]
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cmp esi,ecx
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ja .DonErr
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push esi
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mov esi,[edx+esi*4-4]
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mov edi,[edx+eax*4-4]
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call ebx
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pop esi
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ja .NeedXchg
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cmp esi,ecx
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jae .DonErr
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push esi
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mov esi,[edx+esi*4]
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mov edi,[edx+eax*4-4]
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call ebx
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pop esi
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jbe .DonErr
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.NeedXchg:
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cmp esi,ecx
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jz .DoXchg
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push esi
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mov edi,[edx+esi*4-4]
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mov esi,[edx+esi*4]
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call ebx
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pop esi
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sbb esi,-1
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.DoXchg:
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mov edi,eax
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call .Exchange
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mov eax,esi
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jmp .Restore
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.DonErr:
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ret
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