c - ucontext.h 中的 REG_* 是什么

Question

这是代码，我不知道每个拘留对他们意味着什么，例如REG_RIP，什么是“RIP”

//ucontext.h
enum
{
//...
  REG_RIP,
//...
}

这是完整的代码

Answer 1

It's the name of a register. REG_RIP means "register RIP" and RIP is the Instruction Pointer. So that enum value is a "name" for the instruction pointer (aka program counter) register on x86.