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18 thg 11, 2018 · @Kaunda: he means that instructions like imul eax, ecx and imul edx, ebx both do the same thing (to different regs), and the CPU doesn't care if you keep a loop counter in …
19 thg 3, 2017 · BTW, don't use loop instruction (unless coding for 256 byte intro), use dec ecx jnz start_loop (sort of simulates 'loop' instruction, and can be used with any register as counter). …
12 thg 5, 2016 · If the ECX register is zero then the repe cmpsb is not executed at all. This means that the following setb and seta instructions would produce garbage! Thus the programmer …
23 thg 10, 2017 · mov ecx, 16 looptop: . . . loop looptop How many times will this loop execute? What happens if ecx = 0 to start with? Does loop jump or fall-through in t...
12 thg 9, 2019 · What I do want, is the ability to store the result in another register, say %ecx for example, and then use this to access the value in the array at index i*j. When I look up the …
16 thg 1, 2016 · when I have the the operation IDIV ecx in assembly, then i have read that the that the value in edx:eax is divided by the operand ecx. I also know that the quotient is stored in …
22 thg 4, 2002 · 以下内容是CSDN社区关于请问 mov eax esi 和 mov eax [esi] 有什么不同？相关内容，如果想了解更多关于汇编语言社区其他内容，请访问CSDN社区。
imul also has an immediate form: imul ecx, ebx, 1234 does ecx = ebx * 1234. Many assemblers will accept imul ecx, 1234 as short-hand for imul ecx, ecx, 1234. These 32x32 => 32-bit forms …
30 thg 3, 2010 · The following is a brief explanation of what each of the x86 general-purpose registers stands for: EAX: 'Extended Accumulator' - used for arithmetic and logical operations, …
11 thg 11, 2022 · 35 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 …
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