tberghammer added a subscriber: tberghammer.
tberghammer added a comment.
Hi Ewan,
Can you give me some instruction about how can I reproduce the issue on a
Nexus 6? (If you can't gave the information out then the disassembly of the
offending function and the fault address might gave me some hint
Hi Ewan,
Can you give me some instruction about how can I reproduce the issue on a
Nexus 6? (If you can't gave the information out then the disassembly of the
offending function and the fault address might gave me some hint as well)
A SIGBUS error looks a bit strange for me but my best guess is t
EwanCrawford added a subscriber: EwanCrawford.
EwanCrawford added a comment.
Hi Tamas,
This commit causes a SIGBUS for me on Nexus 6 ARMv7 devices, specifically the
g_thumb_breakpoint_opcode change.
I can revert this locally but any advice on tracking the issue down further?
Repository:
rL L
This revision was automatically updated to reflect the committed changes.
Closed by commit rL260367: Use BKPT instead of UDF for arm/thumb breakpoints
(authored by tberghammer).
Changed prior to commit:
http://reviews.llvm.org/D16853?vs=46899&id=47431#toc
Repository:
rL LLVM
http://reviews.
clayborg accepted this revision.
clayborg added a comment.
This revision is now accepted and ready to land.
Looks good. Most JTAG probes actually vend their own GDB server these days. If
so, we will used the Z packets in order to set breakpoints, so we will be
isolated from these issues. If we a
tberghammer added a comment.
In http://reviews.llvm.org/D16853#347120, @omjavaid wrote:
> GDB doesnt use bkpt instruction for user debugging for the reason that it
> interferes with jtag debug probes. I am not sure if LLDB will be ever used
> with a jtag probe in near future but still a jtag pr
omjavaid added a comment.
GDB doesnt use bkpt instruction for user debugging for the reason that it
interferes with jtag debug probes. I am not sure if LLDB will be ever used with
a jtag probe in near future but still a jtag prob might be connected to the
same hardware which is using LLDB to de
tberghammer updated this revision to Diff 46899.
tberghammer added a comment.
Update breakpoint opcodes based on review
http://reviews.llvm.org/D16853
Files:
source/Plugins/Platform/Linux/PlatformLinux.cpp
source/Plugins/Process/Linux/NativeProcessLinux.cpp
Index: source/Plugins/Process/Li
clayborg requested changes to this revision.
clayborg added a comment.
This revision now requires changes to proceed.
There are immediate values you can play around with inside the BKPT instruction
of both ARM and Thumb versions so that the two least significant bytes are the
same:
static const
tberghammer created this revision.
tberghammer added reviewers: clayborg, omjavaid.
tberghammer added a subscriber: lldb-commits.
Herald added subscribers: rengolin, aemerson.
Use BKPT instead of UDF for arm/thumb breakpoints
The UDF instruction is deprecated in armv7 and in case of thumb2 instru
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