- What’s the difference between EAX, EBX, and ECX in assembly?
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 used in your software directly with instructions such as mov, add or cmp The leading e stands for e xtended and means that your register is 32 bits wide
- What does the PIC register (%ebx) do? - Stack Overflow
17 EBX points to the Global Offset Table See this reference about PIC on i386 The link explains what PIC is an how EBX is used
- Linux NASM: What is the value in ebx when you invoke sys_exit?
%ebx is the status code for the exit system call This means that whatever is stored in %ebx will be returned to the Operating System Therefore, after executing your application on a terminal, issuing this command: echo $? will print the return code of your app Pages 20,21,22 of Programming from the Ground Up explains this very well
- Are the data registers EAX, EBX, ECX and EDX interchangeable
For example, for the write system call, it grabs the file descriptor from ebx, a pointer to the buffer you want to write from ecx and the number of bytes you want to write from edx The kernel does not know what your intentions are, it just stupidly grabs whatever is in the registers, so it does matters which registers you use
- Error moving a constant byte value into %ebx - Stack Overflow
My understanding is that this line intends to copy 0xF to a location in main memory, however %ebx is a 32-bit register, memory addresses are 64 bits wide on 64-bit machines, and so %ebx cannot hold a memory address, therefore it cannot be dereferenced (dereferencing is what the parentheses around %ebx represent, correct?)
- Inline assembly error: unknown register name ‘%%ebx’ in ‘asm’
Inline assembly error: unknown register name ‘%%ebx’ in ‘asm’ Asked 13 years ago Modified 13 years ago Viewed 4k times
- Tibco EBX ~ Filter after Technical details - Stack Overflow
I need help with filtering in Tibco EBX rest API I am trying to filter after quot;technicalDetails quot; information like lastUpdateDate or lastUpdateUser As of the current Tibco EBX documentati
- What do square brackets mean in x86 assembly? - Stack Overflow
What is the difference between these four commands? mov ebx, eax mov [ebx], eax mov ebx, [eax] mov [ebx], [eax] They say that the brackets mean "get the value of the address" But what, then, does that very first line really do? Does it not move the value of eax into ebx? If it does, then what are the point of the brackets?
|