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New posts in x86
Jump directly to certain parts of a function
Aug 14, 2026
c
assembly
x86
What is the rationale for setting all SSE/AVX registers call-clobbered in the SysV ABI?
Aug 14, 2026
x86
x86-64
sse
calling-convention
abi
Efficient floating point modulus one in C (fractional part of a float)
Aug 14, 2026
c
x86
floating-point
modulo
fpu
strcat overflow?
Aug 13, 2026
c
assembly
x86
nasm
strcat
What is the equivalent of _rotl64 under GCC [duplicate]
Aug 11, 2026
c++
c
gcc
rotation
x86
How does an int instruction know which registers to use when it runs?
Aug 12, 2026
assembly
x86
nasm
system-calls
bios
Is there an easy way to multiply two registers like this in AT&T assembly: %eax * %ebx = %ecx
Aug 12, 2026
assembly
x86
att
How does the CPU writes data to an IO port?
Aug 12, 2026
assembly
x86
cpu
switching fpu to single precision
Aug 12, 2026
performance
assembly
optimization
x86
x87
Efficient way to toggle an atomic_bool
Aug 11, 2026
c
x86
atomic
compiler-optimization
stdatomic
AMD DE_CFG[9] documentation
Aug 11, 2026
security
x86
cpu-architecture
amd-processor
Reset vector in 386+ processors
Aug 11, 2026
x86
boot
real-mode
How can I best pass a Global Offset Table (GOT) for my language on x86?
Aug 09, 2026
assembly
x86
elf
Change in glibc not working
Aug 10, 2026
c
linux
gcc
x86
Total Store Order and write merging in x86(-64)
Aug 10, 2026
architecture
x86
x86-64
cpu-architecture
Equivalent of PEXT instruction on ARM
Aug 10, 2026
assembly
x86
arm
bit-manipulation
arm64
Why is rep movsb slow for overlapping forward memmove, and why does libc use it?
Aug 10, 2026
c++
performance
x86
cpu-architecture
memmove
how to find cpu cache size for a x86 processor
Aug 09, 2026
caching
assembly
x86
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