2022年11月11日 · eax, ebx, ecx and so on are actually registers, which can be seen as "hardware" variables, somewhat similar to higher level-language's variables. Registers can be used in your software directly with instructions such as mov, add or cmp.

2016年11月25日 · EAX: "Extended Accumulator" - used for arithmetic and logical operations, as well as for storing return values from functions. EBX: "Extended Base" - often used as a pointer to data in the data segment of memory. ECX: "Extended Counter" - often used for loop and string operations, as well as for storing function arguments.

2020年9月29日 · MOV sets EAX = the value from memory at that address. Your re-phrasing of the existing answer isn't adding anything new, and is actually less clear because you're mis-using "address" to mean "memory at that address", which is …

In your example the address calculation is very simple, because it just adds a offset to ebx and stores the result in eax: eax = ebx + 0x10. lea can do a lot more. It can add registers, multiply registers with the constants 2, 4 and 8 for address calculations of words, integers and doubles. It can also add an offset.

hmm eax == 32bits ax == 16bits ah|al == 8bits, it's always like this, x64 adds new registers, back in the 16 bit days we only had ax & al & ah then when 32 bit addressing came round it was added in a way that didn't really effect how you address the 16bit or 8bit registers, the new registers in x64 (64 bit registers that overlap, eax that overlaps ax, etc) start with an r so rax rbx and so on.

2018年10月26日 · BTW, "eax, ax, al registers" = it's the same one register, not three registers. Those different aliases just indicate the bit-size the instruction will target/affect (not 100% true/precise in 64b mode, where 32b eax target will automatically clear upper 32b, i.e. the instruction like mov eax,2 will affect whole rax).

2017年7月7日 · Registers like eax, ebx, etc are the 32-bit registers which exist both in the original 32-bit x86 ISA, as well as the 64-bit x86-64. If your book refers only to those registers, it is likely that it doesn't cover the 64-bit extension (perhaps it was written before it).

2015年12月2日 · Latest EAX update (on a fresh setup install prerequisites first) Inserted Code DBMASMEAX007a3.bundle3 rev.update.013.7.5 (20220615): …expiring in 2023.12.31 23:59:59 GMT !

So AX is composed of AH:AL halves, and is itself the low half of EAX. (The upper half of EAX isn't directly accessible as a 16-bit register; you can shift or rotate EAX if you want to get at it.) x86-64 CPUs extend the integer registers to 64-bit: RAX is the full 64-bit value, with EAX and its sub-components mapped to the lower 32 bits. The ...

2025年2月12日 · I am new to this EAX DB, just found this thread less than 3 hours ago, and have been trying to read as much as i can, and tried to set up the EAX DB myself in my MT4. But I can't seem to make it works. I don't even know If I'm setting up everything right. I've activated the force history script before running the EAX. my question are: 1.