---
name: "function::registers_valid"
section: "3stap"
platform: "linux"
package: "systemtap-doc"
version: "5.1-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/function::registers_valid"
---

# function::registers\_valid(3stap)

Determines validity of register and u\_register in current context

## NAME

function::registers\_valid - Determines validity of **register** and **u\_register** in current context

## SYNOPSIS

```
    registers_valid:long()
```

## ARGUMENTS

None

## DESCRIPTION

This function returns 1 if **register** and **u\_register** can be used in the current context, or 0 otherwise. For example, **registers\_valid** returns 0 when called from a begin or end probe.

## SEE ALSO0

[*tapset::context*(3stap)](/tapset::context/3stap.md)