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New posts in x86-64
Rex prefix decoding for intel x64 arch
Jul 01, 2026
assembly
x86-64
intel
opcode
machine-code
Logarithm in C++ and assembly
Jun 30, 2026
c++
performance
assembly
x86-64
logarithm
How to traverse a string in assembly until I reach null? (strlen loop)
Jul 02, 2026
assembly
x86-64
gnu-assembler
att
strlen
What is REX prefix in Instruction Encoding?
Jun 30, 2026
assembly
x86-64
att
machine-code
instruction-encoding
Why does GCC allocate more stack memory than needed?
Jul 01, 2026
c
gcc
x86-64
compiler-optimization
stack-memory
execve() argv in GAS AT&T assembler
Jun 29, 2026
assembly
x86-64
system-calls
shellcode
execve
Java getProperties
Jun 29, 2026
java
cpu
x86-64
getproperties
CMPXCHG – safe to ignore the ZF flag?
Jun 29, 2026
assembly
x86-64
lock-free
compare-and-swap
How to compare a char in a string with another char in NASM x86_64 Linux Assembly
Jun 27, 2026
linux
assembly
64-bit
nasm
x86-64
How can I compile x86_64 asm code on M1 Mac (ARM)
Jun 28, 2026
macos
assembly
x86-64
cross-compiling
apple-m1
Missing optimization: mov al, [mem] to bitfield-insert a new low byte into an integer
Jun 27, 2026
c
assembly
x86-64
micro-optimization
How do you call C functions from Assembly and how do you link it Statically?
Jun 27, 2026
c
linux
assembly
gcc
x86-64
How to optimize cell-width measuring with SIMD (find the first column to have a non-zero byte in an 8x8 block of bytes)
Jun 26, 2026
c
x86-64
simd
sse
avx
Understanding a DT_TEXTREL warning
Jun 25, 2026
assembly
x86-64
nasm
ld
position-independent-code
Why modern calling conventions pass variadic arguments in registers?
Jun 26, 2026
c
assembly
x86-64
arm64
calling-convention
Why do GCC and Clang stop using RIP-relative loads for arrays bigger than 16MB?
Jun 26, 2026
assembly
gcc
clang
x86-64
addressing-mode
Is mfence for rdtsc necessary on x86_64 platform?
Jun 25, 2026
c++
linux
timestamp
x86-64
rdtsc
Where can I find a list of x86_64 assembly instructions?
Jun 25, 2026
assembly
x86-64
instruction-set
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