x86-64 Examples and Free Source Code

Can I load a 32 bit DLL into a 64 bit process on Windows?...

.net windows 64-bit x86-64

Are rdi and rsi caller saved or callee saved registers?...

assembly x86-64 nasm cpu-registers calling-convention

Reason for (win) x64-calling convention restrictions in epilogues...

windows assembly x86-64 abi seh

How to print a string to the terminal in x86-64 assembly (NASM) without syscall?...

linux assembly x86-64 nasm

How to move two 32-bit registers in to one 64-bit register?...

assembly x86 move x86-64

How to use bits in a byte to set dwords in ymm register without AVX2? (Inverse of vmovmskps)...

assembly x86-64 sse avx

How can I get the _GLOBAL_OFFSET_TABLE_ address in my program?...

c linux gcc linker x86-64

C++-23 numeric_limits<long double>::max() use case...

c++x86-64 long-double numeric-limits 128-bit

Arithmetic identities and EFLAGS (emulate SUB using NOT and ADD?)...

assembly x86 x86-64 eflags

How to catch EXCEPTION_PRIV_INSTRUCTION from RDPMC directly in Assembly (and without SEH)?...

exception assembly x86-64 cpu

Can I disable/turn off general protection exception when an address is not in canonical form?...

pointers assembly x86-64 cpu-architecture canonical-form

x86_64 assembly program segfaults if push/pop rdx is removed...

assembly x86 x86-64

Stack memory in a freestanding environment...

assembly x86-64 stack-memory stack-pointer freestanding

idt_64 definiton crashes the os...

assembly operating-system x86-64 bootloader

How does MSVC's optimized asm implement a simple C program that uses strcpy on argv[1]? Understa...

c windows visual-c++x86-64 disassembly

uops for integer DIV instruction...

assembly x86 x86-64 cpu-architecture micro-architecture

Understanding GCC's alloca() alignment and seemingly missed optimization...

gcc assembly optimization x86-64 alloca

Why does syscall on x86-64 load CS and SS selectors if base/limit aren’t used?...

assembly x86-64 system-calls cpu-registers memory-segmentation

Why does modulo in a loop code result in so different assembly in C (compiled by GCC) and in Rust (c...

c assembly rust x86-64 compiler-optimization

Why are all IMUL µOPs dispatched to Port 1 only (on Haswell), even when multiple IMULs are exec...

assembly x86-64 cpu cpu-architecture intel

What makes executables compiled with gcc on ARM64 larger than on x86_64?...

linux gcc x86-64 executable arm64

How is a 15-byte instruction transferred from memory to CPU?...

assembly x86-64 cpu-architecture cpu-registers instruction-set

Do all x86-64 implementations support the CMOVcc instructions?...

assembly x86-64 instruction-set conditional-move

Producing a cmp and cmov instruction in V8 for x64...

assembly x86-64 v8 branchless conditional-move

In x86_64, does a 32-bit cmov clear the top bits if the condition is false?...

assembly x86-64 cpu-registers conditional-move

What does the "P" prefix stand for in the x86 instruction PCLMULQDQ?...

assembly x86 x86-64 sse instruction-set

x86 Absolute Value Confusion...

assembly x86-64 calling-convention absolute-value

256-bit arithmetic in Clang (extended integers)...

c clang x86-64 bigint extint

Is there a 256-bit integer type in C?...

c gcc x86-64 bigint bitint

How does gdb start an assembly compiled program and step one line at a time?...

linux assembly gdb x86-64 ptrace