FUNCTION::REGPARM

Section: Context Functions (3stap)
Updated: November 2022
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NAME

function::regparm - Specify regparm value used to compile function

SYNOPSIS

    regparm(n:long)

ARGUMENTS

: original regparm value

DESCRIPTION

Call this function with argument n before accessing function arguments using the *_arg function is the function was build with the gcc -mregparm=n option.

(The i386 kernel is built with -mregparm=3, so systemtap considers regparm(3) the default for kernel functions on that architecture.) Only valid on i386 and x86_64 (when probing 32bit applications). Produces an error on other architectures.