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New posts in assembly
What is the reason function names are prefixed with an underscore by the compiler?
Aug 11, 2022
c
function
assembly
naming
compilation
Why are rbp and rsp called general purpose registers?
Nov 03, 2022
assembly
x86-64
cpu-registers
Is it possible to create threads without system calls in Linux x86 GAS assembly?
Jul 18, 2022
linux
multithreading
assembly
gnu-assembler
What does NOPL do in x86 system?
Dec 16, 2021
assembly
x86
nop
Long multi-byte NOPs: commonly understood macros or other notation
Jun 27, 2021
assembly
x86-64
naming-conventions
disassembly
nop
no-op
Why does mulss take only 3 cycles on Haswell, different from Agner's instruction tables? (Unrolling FP loops with multiple accumulators)
Nov 24, 2021
c
assembly
x86
sse
micro-optimization
Is it safe to read past the end of a buffer within the same page on x86 and x64?
Jul 20, 2021
c
performance
assembly
optimization
x86
Learning to read GCC assembler output
Sep 23, 2022
c++
c
gcc
assembly
In x86 what's difference between "test eax,eax" and "cmp eax,0"
Aug 30, 2022
assembly
x86
Efficient 128-bit addition using carry flag
May 09, 2021
c++
gcc
assembly
bigint
carryflag
Difference between JA and JG in assembly
Aug 29, 2022
assembly
x86
conditional-statements
What's the point of LEA EAX, [EAX]?
Aug 29, 2022
c
assembly
x86
instruction-set
How exactly do partial registers on Haswell/Skylake perform? Writing AL seems to have a false dependency on RAX, and AH is inconsistent
Apr 05, 2019
assembly
x86
intel
cpu-architecture
micro-optimization
What is callq instruction?
Sep 12, 2022
assembly
x86
x86-64
att
Reading a register value into a C variable [duplicate]
Aug 29, 2022
c
gcc
assembly
inline-assembly
cpu-registers
How are the fs/gs registers used in Linux AMD64?
Sep 30, 2022
linux
assembly
architecture
x86
x86-64
What does the MOVZBL instruction do in IA-32 AT&T syntax?
Aug 09, 2022
assembly
x86
att
zero-extension
Labels in GCC inline assembly
Aug 29, 2022
c++
c
gcc
assembly
inline-assembly
Why is such complex code emitted for dividing a signed integer by a power of two?
Oct 12, 2022
c++
visual-c++
assembly
x86
division
Why does Intel's compiler prefer NEG+ADD over SUB?
Aug 29, 2022
assembly
x86
micro-optimization
icc
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