45 lines
600 B
ArmAsm
45 lines
600 B
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss
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.sect .text
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.define .loi
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.define .los
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! #bytes in ecx
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! address in ebx
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! save esi/edi. they might be register variables
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.los:
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pop edx
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mov eax,ecx
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sar ecx,1
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jnb 1f
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movsxb eax,(ebx)
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push eax
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jmp edx
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1:
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sar ecx,1
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jnb 1f
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movsx eax,(ebx)
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push eax
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jmp edx
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1:
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push edx
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mov edx,esi
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mov esi,ebx
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pop ebx
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sub esp,eax
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jmp 1f
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.loi:
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! only called with size >= 4
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mov edx,esi
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mov esi,ebx
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pop ebx
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sub esp,ecx
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sar ecx,2
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1:
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mov eax,edi
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mov edi,esp
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rep movs
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mov esi,edx
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mov edi,eax
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jmp ebx
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