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New posts in x86-64
machine code FF 25 should have 64-bit operand but actually only 32-bit is available
Feb 08, 2026
assembly
x86-64
machine-code
opcode
How do I extract a single byte from an xmm-register in Asm?
Feb 06, 2026
assembly
x86-64
sse
gnu-assembler
replaced C function with assembly, now segfaulting after main exits [duplicate]
Feb 06, 2026
linux
assembly
x86-64
calling-convention
abi
Address sanitizer says there is a segfault, but valgrind and gdb say there isn't?
Feb 05, 2026
assembly
gcc
segmentation-fault
x86-64
address-sanitizer
Creating overload for String.GetHashCode() to return same value in x86 and x64 environments
Feb 03, 2026
c#
.net
x86-64
gethashcode
Using call-preserved registers vs just the stack for saving values around a function call [duplicate]
Feb 02, 2026
c
assembly
gcc
x86-64
register-allocation
How do cores decide which cache line to invalidate in MESI?
Feb 01, 2026
assembly
x86-64
cpu-architecture
cpu-cache
Complete x86/x64 JIT Assembler for C Language
Jan 31, 2026
assembly
x86
x86-64
jit
x64 ymm/SIMD/vector instructions where ymm register is specified in a register?
Jan 31, 2026
assembly
x86-64
simd
Why does this compiler output by GCC error when translated into NASM?
Jan 30, 2026
assembly
compiler-errors
nasm
x86-64
code-translation
How to use INVLPG on x86-64 architecture?
Jan 25, 2026
c
assembly
x86
x86-64
tlb
Why do align access and non-align access have same performance?
Jan 27, 2026
x86-64
intel
memory-alignment
Is calling `add` on a memory location faster than calling it on a register and then moving the value?
Jan 26, 2026
assembly
x86
x86-64
micro-optimization
Assembly do we need the endings? [duplicate]
Jan 25, 2026
assembly
x86-64
att
Cache set and tag
Jan 24, 2026
caching
memory
x86-64
mmu
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