WebJan 4, 2012 · in al,70h ; turn off interrupts and NMI or al,80h out 70h,al mov al,-1 ; no interrupts at all out 21h,al out 0a1h,al; ...; in long mode, after turn APIC on sti ; need to calibrate APIC timer mov dx,61h in al,dx and al,0fdh ; turn off sound of speaker or al,1 ; connect speaker to PIT ch.2 WebMay 1, 2010 · mov eax, fs:[30h] ;PEB ;64-bit PEB follows 32-bit PEB ;NtGlobalFlag mov al, [eax+10bch] and al, 70h cmp al, 70h je being_debugged. Heap flags. For a 32-bit process on a 64-bit platform, there are separate heaps for the 32-bit portion and the 64-bit portion. Within the 32-bit heap are two well-known fields of interest.
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WebSep 20, 2024 · out 70h,al Writes to port 0x70 must always be followed by a read or write to port 0x71. Code: Select all shl eax,1 ; clear shr eax,1 ; paging bit The CPU is still in real … Weband al, 70h cmp al, 70h je being_debugged. The following is the detection code for 64-bit code on a 64-bit machine: `` `asm push 60h pop rsi gs:lodsq ;Process Environment Block mov al, [rsi*2+rax-14h] ;NtGlobalFlag and al, 70h cmp al, 70h je being_debugged It should be noted that if a 32-bit program is running on a 64-bit machine, there will ... dynamic essentials chiropractic seminar
Compilation study notes (10) - IO ports and instructions
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