* [Bug translator/11847] New: sdt.h for ppc, -mno-regnames, use %I0%0
@ 2010-07-28 21:57 fche at redhat dot com
2010-09-01 14:57 ` [Bug translator/11847] " fche at redhat dot com
0 siblings, 1 reply; 2+ messages in thread
From: fche at redhat dot com @ 2010-07-28 21:57 UTC (permalink / raw)
To: systemtap
We sort of gave up back in bug #11821, but it turns out we can
do somewhat better, if the "%0" is replaced with "%I0%0" for
each SDT_V2 operand slot, for powerpc only. This would cause
literals to be prefixed with "i", resolving the ambiguity.
Then in turn the translator's $nnnn regex matcher (tapsets.cxx:4675ish)
could accept "i" as a literal number prefix, not just "$".
Up to this point, it's all compatible with SDT_V2 binaries & logic.
However, the later REGISTER case can't presume that the lack-of-"i"
means a register number, since SDT_V2 binaries may exist that precede
this particular change. So a later magic number may need to be assigned
to communicate to the translator that %I0%0 was specified, and thus
lack-of-"i" means "register number, for sure".
--
Summary: sdt.h for ppc, -mno-regnames, use %I0%0
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: translator
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=11847
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* [Bug translator/11847] sdt.h for ppc, -mno-regnames, use %I0%0
2010-07-28 21:57 [Bug translator/11847] New: sdt.h for ppc, -mno-regnames, use %I0%0 fche at redhat dot com
@ 2010-09-01 14:57 ` fche at redhat dot com
0 siblings, 0 replies; 2+ messages in thread
From: fche at redhat dot com @ 2010-09-01 14:57 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2010-09-01 14:56 -------
Part of sdt v3.
*** This bug has been marked as a duplicate of 11916 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://sourceware.org/bugzilla/show_bug.cgi?id=11847
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2010-07-28 21:57 [Bug translator/11847] New: sdt.h for ppc, -mno-regnames, use %I0%0 fche at redhat dot com
2010-09-01 14:57 ` [Bug translator/11847] " fche at redhat dot com
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