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New posts in x86-64
"relocation R_X86_64_32S against `.bss' can not be used when making a shared object”
Oct 20, 2022
linux
assembly
x86-64
nasm
linker-errors
How to call a function through a function pointer passed as an argument?
Oct 20, 2022
assembly
function-pointers
x86-64
masm
With ASLR turned on, are all sections of an image get loaded at the same offsets relative to the image base address every time?
Oct 19, 2022
c++
c
linux
x86-64
aslr
What is the purpose of the 40h REX opcode in ASM x64?
Oct 19, 2022
windows
64-bit
x86-64
disassembly
opcode
MSYS2 GCC zeros out doubles on floating point operations with SSE disabled
Oct 19, 2022
gcc
x86-64
sse
calling-convention
msys2
complier generating a mov back and forth on eax
Oct 19, 2022
c++
gcc
assembly
x86-64
micro-optimization
What is the fastest way to swap the bytes of an unaligned 64 bit value in memory?
Oct 18, 2022
performance
assembly
x86-64
endianness
micro-optimization
XNOR two 64 bits registers in 8 bit blocks
Oct 17, 2022
assembly
bit-manipulation
x86-64
simd
Does prefetching a write ever affect single core performance?
Oct 09, 2022
x86-64
multicore
cpu-architecture
prefetch
cpu-cache
Tracing call stack in disassembled code
Oct 03, 2022
c++
c
assembly
gdb
x86-64
Reserve bytes in stack: x86 Assembly (64 bit)
Sep 30, 2022
assembly
x86-64
cpu-registers
Is it valid to link non PIC objects into an executable with PIC objects
Oct 24, 2022
intel
linux
gcc
x86-64
fpic
Does rcx always point to the PEB at the process entrypoint?
Mar 13, 2022
intel
c
windows
winapi
assembly
x86-64
assembly subroutines get called twice without even being called from main
Oct 31, 2022
intel
linux
gcc
assembly
x86-64
subroutine
ranlib and static library
Nov 09, 2022
intel
c
linux
gcc
makefile
x86-64
Why does the ia32/x64 opcode map document 0x66 and 0xF2 as a double mandatory prefix for opcode 0x0F38F1 (CRC32)?
Sep 04, 2021
intel
assembly
x86
x86-64
opcode
machine-code
PIE disabled. Absolute addressing when asm programming with gcc on mac OS X
Mar 18, 2021
macos
gcc
assembly
x86-64
How come INC instruction of x86 is not atomic? [duplicate]
Sep 10, 2022
intel
c
assembly
x86-64
atomic
Modulo operator slower than manual implementation?
Sep 30, 2022
c
x86-64
compiler-optimization
modular-arithmetic
128-bit
Access x86 COM from x64 .NET
Sep 14, 2022
.net
com
interop
x86
64-bit
x86-64
32bit-64bit
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