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New posts in x86-64
Can 128bit/64bit hardware unsigned division be faster in some cases than 64bit/32bit division on x86-64 Intel/AMD CPUs?
May 07, 2026
performance
assembly
x86
x86-64
integer-division
Sizeof operator returns incorrect size? [duplicate]
May 07, 2026
c
struct
x86-64
structure-packing
How to test a x64 CPU emulator
May 07, 2026
x86
emulation
x86-64
i386
A working linux kernel + gem5 config for FS boot up in x86 SMP
May 05, 2026
linux
x86
multiprocessing
x86-64
gem5
Why does the Windows x64 calling convention require XMM (FP) args copied to integer registers, for variadic functions like printf?
May 04, 2026
windows
assembly
floating-point
x86-64
calling-convention
Is it possible to temporarily suppress Intel CET for a single ret instruction, or otherwise use retpolines with it?
May 06, 2026
assembly
x86-64
intel
spectre
Tricks compiler uses to compile basic arithmetic operations of 128-bit integer
May 05, 2026
c++
gcc
assembly
x86-64
compiler-optimization
Is there a list of registers used by different x86_64 operations and C std lib functions somewhere?
May 03, 2026
assembly
x86-64
nasm
calling-convention
If LDT does not exist in 64-bit architecture how are 32-bit systems that use it emulated on a 64-bit architecture?
May 03, 2026
assembly
x86
x86-64
instruction-set
gdt
Why is the AL field (FP register usage count) necessary in the SysV ABI?
May 03, 2026
assembly
x86-64
variadic-functions
calling-convention
abi
load a fake debug symbol in gdb when debugging a stripped program
May 03, 2026
c
linux
gdb
x86-64
disassembly
Confusion regarding stack growth on x86_64 Linux
May 03, 2026
c
gcc
assembly
stack
x86-64
Twice as slow SIMD performance without extra copy
May 02, 2026
assembly
x86-64
simd
sse
amd-processor
What is the best way to store a large list of Boolean values in x86 assembly?
Apr 30, 2026
assembly
x86
boolean
x86-64
bitarray
Linking Linux x86-64 assembly hello world program with ld fails [duplicate]
Apr 30, 2026
linux
assembly
64-bit
x86-64
nasm
How to build x64 and x86 projects that reference same projects
Apr 30, 2026
c#
compilation
x86-64
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