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New posts in x86
Hooks: why do we need to VirtualProtect() again to restore permissions?
Apr 23, 2017
c++
winapi
x86
hook
Does the semantics of `std::memory_order_acquire` requires processor instructions on x86/x86_64?
Apr 01, 2022
c++
c++11
concurrency
x86
memory-barriers
Optimal SSE unsigned 8 bit compare
Sep 06, 2021
c
x86
sse
simd
sse4
Questions regarding operations on NaN
Nov 07, 2022
floating-point
x86
sse
nan
ieee-754
Why segmentation cannot be completely disable?
Jun 15, 2021
x86
x86-64
cpu-architecture
processor
memory-segmentation
How to disable vectorization in clang++?
Oct 17, 2022
c++
optimization
x86
clang
vectorization
Order-preserving memcpy in C++
Apr 26, 2019
c++
x86
arm
memcpy
lock-free
What register in i386 stores the CPL?
Sep 06, 2022
x86
x86-64
cpu-architecture
cpu-registers
i386
Drain the instruction pipeline of Intel Core 2 Duo?
Oct 10, 2017
c
assembly
x86
benchmarking
microbenchmark
intel
Different platform AppDomains in one .Net process?
Aug 31, 2022
.net
dll
x86
64-bit
appdomain
Emulating an x86 processor -- how should I start?
Oct 11, 2021
x86
emulation
what is the order of source operands in AT&T syntax compared to Intel syntax?
Sep 20, 2022
gcc
assembly
x86
att
Efficiently dividing a double by a power of 2
May 22, 2022
c++
c
x86
EBP, ESP and stack frame in assembly
Dec 20, 2019
assembly
x86
nasm
calling-convention
stack-frame
Can the IN (as well as INS, INSB, etc.) instruction block in x86 assembly?
Aug 08, 2019
assembly
x86
Meaning of "ds:" in assembly language
Aug 12, 2022
assembly
x86
intel
May there be any penalties when using 64/32-bit registers in Long mode?
Sep 11, 2022
assembly
optimization
x86
micro-optimization
Using OR r/m32, imm32 in NASM
Oct 14, 2020
assembly
x86
intel
amd
An i386/x64 pop FS/GS instruction supports a variant where it increments the SP by 32 bits or 64 bits in stead of 16 bits. What is it used for?
May 18, 2022
assembly
x86
x86-64
i386
Is the i386 instruction "div ah" pointless?
Feb 14, 2022
assembly
x86
i386
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