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[Bug translator/12780] New: use DW_OP_GNU_entry_value for @entry($var) if possible
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Wed, 18 May 2011 16:42:44 +0000
- Subject: [Bug translator/12780] New: use DW_OP_GNU_entry_value for @entry($var) if possible
- Auto-submitted: auto-generated
http://sourceware.org/bugzilla/show_bug.cgi?id=12780
Summary: use DW_OP_GNU_entry_value for @entry($var) if possible
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: translator
AssignedTo: systemtap@sourceware.org
ReportedBy: fche@redhat.com
A recently added gcc facility exposes saved copies of the incoming
parameters of a function with a DW_OP_GNU_entry tag. It may be
possible to use this facility for some @entry($var) type constructs,
which would save having to put a k/uprobe at function entry to perform
explicit $var saving.
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