2009年12月6日 · Jeff Duntemann in his assembly language book has an example assembly code for printing the command line arguments. The code uses esi and edi to store counters as they …

2016年4月28日 · From what I know is that mov esi, [esp+10h] will copy the data(the actual value) from the adress esp+10h and store it in ESI. So esi should be some kind of data right now. But …

2011年4月21日 · esi, source index: some string operations read a string from the memory pointed to by esi; edi, destination index: some string operations write a string to the memory pointed to …

2016年12月13日 · Usually it's easier to switch values in registers, than modifying rest of code. If you ever happen to be in a situation where you need esi/edi just in the other one, then xchg …

2016年11月25日 · ESI: "Extended Source Index" - often used as a pointer to a source operand in string operations. EDI: "Extended Destination Index" - often used as a pointer to a destination …

2022年10月16日 · To add c[3] with ebx containing the value of c, the code sets esi to 3 and uses add eax, dword ptr [ebx+esi*4]. This instruction adds a 32-bit value read from the memory int …

2010年6月7日 · @CiroSantilliOurBigBook.com: In MASM and GAS .intel_syntax, dword is a constant with value 4, so mov dword [rdi], eax is actually mov [rdi + 4], eax.

2013年2月22日 · Wrt. my example, I checked in the debugger for a call to Sleep: Neither SleepEx nor NtDelayExecution does a push EBP and especially SleepEx seems to be nontrivial. So in …

2014年2月12日 · I found that the ESP register is the current stack pointer and EBP is the base pointer for the current stack frame. However, I don't understand these definitions (I am just …

These registers were originally implicitly used in repetitive instructions, for instance MOVSB, which copies a byte from DS:SI (DataSegment:SourceIndex) to ES:DI …