New posts in x86

How are cache memories shared in multicore Intel CPUs?

performance x86 multiprocessing intel cpu-cache

What does the "rep stos" x86 assembly instruction sequence do?

assembly x86

Very fast memcpy for image processing?

c assembly optimization x86 memcpy

Fastest way to calculate a 128-bit integer modulo a 64-bit integer

c algorithm x86 modulo assembly

What is the correct way to obtain (-1)^n?

c++ algorithm x86 cmath

What are the ESP and the EBP registers?

assembly x86 callstack stack-frame

Divide and Get Remainder at the same time?

x86 modulo divide

How to interpret objdump disassembly output columns?

assembly x86 endianness disassembly att

NASM Error Parsing, Instruction Expected

assembly x86 nasm

C++ How is release-and-acquire achieved on x86 only using MOV?

c++ x86 memory-barriers memory-model stdatomic

Assembly x86 Date to Number - Breaking a string into smaller sections

string assembly x86 masm32

How to write an absolute target for a near direct relative call/jmp in MASM

assembly visual-c++ x86 call masm

When using the MOV mnemonic to load/copy a string to a memory register in MASM, are the characters stored in reverse order?

string assembly x86 masm masm32

Random number in assembly

assembly random x86 x86-16 emu8086

Why can I access lower dword/word/byte in a register but not higher?

assembly x86 64-bit x86-64 cpu-registers

When should I use size directives in x86?

assembly x86 x86-64 directive

Is it useful to use VZEROUPPER if your program+libraries contain no SSE instructions?

performance assembly x86 avx micro-optimization

How do programs know how much space to allocate for local variables on the stack?

assembly x86 x86-64 stack-frame

How does the CPU know how many bytes it should read for the next instruction, considering instructions have different lenghts?

assembly x86 cpu

Is vxorps-zeroing on AMD Jaguar/Bulldozer/Zen faster with xmm registers than ymm?

assembly x86 avx micro-optimization amd-processor