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New posts in x86-64
In this compiler output, why does func(int) use its first arg as a pointer, zeroing 24 bytes of pointed-to memory? The arg isn't a pointer
Aug 11, 2026
assembly
x86-64
calling-convention
What are the lowest locking primitives in Linux
Aug 11, 2026
c
linux
gcc
x86-64
Total Store Order and write merging in x86(-64)
Aug 10, 2026
architecture
x86
x86-64
cpu-architecture
Is there a list of unused binary opcodes for X86_64 (amd64)
Aug 10, 2026
assembly
x86-64
instruction-set
opcode
gem5
Why are all IMUL µOPs dispatched to Port 1 only (on Haswell), even when multiple IMULs are executed in parallel?
Aug 09, 2026
assembly
x86-64
cpu
cpu-architecture
intel
Is it legal to have same register as operands in one instruction?
Aug 08, 2026
assembly
x86-64
instructions
instruction-set
Are machine code instructions fetched in little endian 4-byte words on an Intel x86-64 architecture?
Aug 07, 2026
x86-64
intel
endianness
cpu-word
machine-code
Is there a higher performing implementation of powf(10,floorf(log10f(x)))
Aug 07, 2026
c++
c
floating-point
x86-64
arm64
Execve with argument in x64 with gnu asm
Aug 06, 2026
assembly
arguments
x86-64
shellcode
execv
Try to understand calling process in assembly code
Aug 06, 2026
c
assembly
x86-64
Lazarus FPC refusing a 64-bit value for AND op in ASM [duplicate]
Aug 06, 2026
assembly
x86-64
freepascal
lazarus
Convert _mm_shuffle_epi32 to C expression for the permutation?
Aug 03, 2026
x86
x86-64
sse
shuffle
sse2
Can a process running a 32-bit compiled binary use more than 4GB of memory?
Aug 05, 2026
python
osx-snow-leopard
memory-management
x86-64
i386
Calculating x*log_2(y) with x86 assembly
Aug 05, 2026
assembly
floating-point
x86-64
logarithm
Why floating point registers are different than general purpose ones
Aug 05, 2026
floating-point
x86-64
simd
cpu-registers
Why do I have to play with "rsp" to call a c++ function?
Aug 05, 2026
windows
assembly
x86-64
masm
calling-convention
Why does the x86-64 Linux ABI pass structs by value smaller than 16 bytes in registers, instead of 8?
Aug 04, 2026
c
linux
assembly
x86-64
abi
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