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[Bug translator/10388] New: Support DW_OP_call_frame_cfa
- From: "mjw at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 14 Jul 2009 09:35:10 -0000
- Subject: [Bug translator/10388] New: Support DW_OP_call_frame_cfa
- Reply-to: sourceware-bugzilla at sourceware dot org
Currently there are several failures in sdt.exp and exelib.exp on fedora rawhide
because it has a newer gcc that supports a more compact debuginfo format by
using some dwarf3 features. In particular it now emits DW_OP_call_frame_cfa if
there is eh_frame information available. Systemtap and elfutils don't support
this yet. The failures look like:
Got "semantic error: dwarf_getlocation_addr (form 0xa): invalid DWARF
The dwarf isn't invalid, elfutils dwarf_get_location() just didn't recognize
DW_OP_call_frame_cfa (this has been fixed in elfutils git, not released yet),
and loc2c also doesn't handle DW_OP_call_frame_cfa. Adding support will rely on
the new elfutils cfi support (only available in git atm).
See also https://fedorahosted.org/pipermail/elfutils-devel/2009-July/000457.html
--
Summary: Support DW_OP_call_frame_cfa
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: translator
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: mjw at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=10388
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