Compiling this code: int main () { return 0; } using: gcc -S filename.cpp ...generates this assembly: .file\"heloworld.cpp\"
A real question that I\'ve been asking myself la开发者_运维百科tely is what design choices brought about x86 being a little endian architecture instead of a big endian architecture?Largely, for the sa
This question already has answers here: How to invoke a system call via syscall or sysenter in inline assembly?
This is from Wikipedia... The Interrupt Descriptor Table (IDT) is a data structure used by the x86 architecture to implement an interrupt
I\'m sorry... (premature) optimization is the root of all evil, but I\'d like to know: how much more costly is to have a jmp instruction vs. not have it (branchless code)? I\'m aft开发者_C百科er the m
I am looking for some help to improve this bilinear scaling sse2 code on core2 cpus On my Atom N270 and on an i7 this code is about 2x faster than the mmx code.But under core2 cpus it is only equal t
I have a problem, whereby I’m getting runtime errors with a compiled program.This works fine in the development environment (x86), but not on the production environment (which is x64).
I\'ve read that, on a 32-bit system with 4GB system memory, 2GB is allocated to user mode and 2GB allocated to kernel mode. But, 开发者_高级运维If I had a system with 512 MB of memory, would it be par
section .text org 100h push selected call output mov ah,4Ch int 21h output: push ebp mov ebp, esp sub esp, 4 push ebx
How can I get CPU serial number under Linux (Ubuntu) without root permissions? I tried cpuid command, it works without root permissions, but appears to return all zeros (I believe because something
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