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New posts in x86
Why REP LODS AL instruction exists?
Sep 04, 2019
assembly
x86
intel
amd
How is the BIOS ROM mapped into address space on PC?
Feb 20, 2022
embedded
x86
cpu
bios
what does the cmpq instruction do?
Oct 16, 2022
assembly
x86
x86-64
Copying a bool from a parameter to a global - comparing compilers output
Apr 05, 2022
c++
assembly
x86
compiler-optimization
micro-optimization
DMA transfer RAM-to-RAM
Sep 18, 2022
c
windows
x86
dma
Prohibit unaligned memory accesses on x86/x86_64
Oct 31, 2022
linux
debugging
x86
memory-alignment
What are these seemingly-useless callq instructions in my x86 object files for?
Mar 27, 2022
c++
assembly
x86
compiler-optimization
How to do an atomic increment and fetch in C?
Sep 18, 2022
c
linux
x86
atomic
intel
x86 calling convention: should arguments passed by stack be read-only?
Jan 16, 2018
c
x86
stack
argument-passing
calling-convention
How can I pass parameters in assembler x86 function call?
Sep 05, 2022
assembly
x86
nasm
calling-convention
How to draw a pixel on the screen in protected mode in x86 assembly?
Sep 13, 2022
memory
video
assembly
x86
pixel
Trapping quiet NaN
Oct 26, 2019
c++
debugging
x86
floating-point
How can I use mach_absolute_time without overflowing?
Jun 24, 2021
macos
x86
posix
powerpc
darwin
Why does MSVC emit a useless MOVSX before performing this Bit Test?
Mar 30, 2018
c++
visual-studio
assembly
x86
x86-64
Using base pointer register in C++ inline asm
Jan 31, 2022
c++
gcc
x86
inline-assembly
red-zone
What does "store-buffer forwarding" mean in the Intel developer's manual?
Aug 18, 2018
assembly
x86
intel
cpu-architecture
memory-model
Why is imul used for multiplying unsigned numbers?
Aug 30, 2022
assembly
x86
x86-64
multiplication
unsigned
How does assembly do parameter passing: by value, reference, pointer for different types/arrays?
Sep 28, 2022
c++
c
arrays
assembly
x86
intel
Is the EBP register (base frame pointer) only for Debugging in x86? [duplicate]
Sep 18, 2022
debugging
memory-management
assembly
x86
check if carry flag is set
Nov 07, 2022
c
gcc
x86
carryflag
eflags
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