diff options
Diffstat (limited to 'stapprobes.5.in')
| -rw-r--r-- | stapprobes.5.in | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/stapprobes.5.in b/stapprobes.5.in index c71f79d3..f1626166 100644 --- a/stapprobes.5.in +++ b/stapprobes.5.in @@ -334,6 +334,11 @@ $var\->field traversal to a structure's field. The indirection operator may be repeated to follow more levels of pointers. .TP +$return +is available in return probes only for functions that are declared +with a return value. +.TP +.TP $var[N] indexes into an array. The index is given with a literal number. @@ -344,12 +349,15 @@ sprintf("parm1=%x ... parmN=%x var1=%x ... varN=%x", parm1, ..., parmN, var1, ..., varN) .TP $$locals -expands to a character string that is equivalent to -sprintf("var1=%x ... varN=%x", var1, ..., varN) +expands to a subset of $$vars for only local variables. .TP $$parms -expands to a character string that is equivalent to -sprintf("parm1=%x ... parmN=%x", parm1, ..., parmN) +expands to a subset of $$vars for only function parameters. +.TP +$$return +is available in return probes only. It expands to a string that +is equivalent to sprintf("$return=%x", $return) +if the probed function has a return value, or else an empty string. .PP For ".return" probes, context variables other than the "$return" value itself are only available for the function call parameters. |