* [Bug tapsets/13466] New: Failures with ARM EABI
@ 2011-12-02 14:48 mjw at redhat dot com
2011-12-07 15:50 ` [Bug tapsets/13466] " mjw at redhat dot com
2017-05-08 20:29 ` fche at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: mjw at redhat dot com @ 2011-12-02 14:48 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=13466
Bug #: 13466
Summary: Failures with ARM EABI
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: tapsets
AssignedTo: systemtap@sourceware.org
ReportedBy: mjw@redhat.com
Classification: Unclassified
On ARM kernels build with EABI we see the following failures:
Running /root/systemtap/testsuite/systemtap.context/context.exp ...
FAIL: int64 function arguments -- numeric
FAIL: int64 function arguments -- numeric --kelf --ignore-dwarf
This is because these tests pass 'long long' arguments.
It seems this differs between ARM calling conventions, newer calling
conventions mandate: "64-bit function parameters passed in registers are
aligned to an even-numbered register instead of using the next available pair."
This could be fixed by taking this into account in tapset/arm/registers.stp
u/s64_arg. But that would break other arm calling conventions.
(Also this would move some of the arguments out of registers and onto the
stack, which arm/registers.stp arch functions aren't yet prepared to handle.)
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* [Bug tapsets/13466] Failures with ARM EABI
2011-12-02 14:48 [Bug tapsets/13466] New: Failures with ARM EABI mjw at redhat dot com
@ 2011-12-07 15:50 ` mjw at redhat dot com
2017-05-08 20:29 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: mjw at redhat dot com @ 2011-12-07 15:50 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=13466
--- Comment #1 from Mark Wielaard <mjw at redhat dot com> 2011-12-07 15:33:08 UTC ---
See also Bug 13481 - ARM register.stp arg() functions don't handle arguments
passed on the stack.
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* [Bug tapsets/13466] Failures with ARM EABI
2011-12-02 14:48 [Bug tapsets/13466] New: Failures with ARM EABI mjw at redhat dot com
2011-12-07 15:50 ` [Bug tapsets/13466] " mjw at redhat dot com
@ 2017-05-08 20:29 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fche at redhat dot com @ 2017-05-08 20:29 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=13466
Frank Ch. Eigler <fche at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |fche at redhat dot com
Resolution|--- |WONTFIX
--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> ---
no reported problems on mainstream arm64
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2011-12-02 14:48 [Bug tapsets/13466] New: Failures with ARM EABI mjw at redhat dot com
2011-12-07 15:50 ` [Bug tapsets/13466] " mjw at redhat dot com
2017-05-08 20:29 ` fche at redhat dot com
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