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| author | Tamas Berghammer <tberghammer@google.com> | 2016-02-02 14:32:11 +0000 |
|---|---|---|
| committer | Tamas Berghammer <tberghammer@google.com> | 2016-02-02 14:32:11 +0000 |
| commit | 8e18fe6e5423163d8f3f9b56aadc8c5b3eb2be91 (patch) | |
| tree | d20764245ea183874a9293c2dca9d88604caa00a /lldb/packages/Python/lldbsuite/test | |
| parent | 926b189a813cc434beadc831fc5beca621fb8612 (diff) | |
| download | bcm5719-llvm-8e18fe6e5423163d8f3f9b56aadc8c5b3eb2be91.tar.gz bcm5719-llvm-8e18fe6e5423163d8f3f9b56aadc8c5b3eb2be91.zip | |
Fix single stepping over the IT instruction
The ARM instruction emulator had 2 bugs related to the handling of the
IT instruction causing an error in single stepping:
* We haven't initialized the IT mask from the CPSR so if the last
instruction of the IT block is a branch and the condition is false
then the emulator evaluated the branch what resulted in an incorrect
pc for the next instruction.
* The ITSTATE was advanced before the execution of each instruction. As
a result the emulator was using the condition of following instruction
in every case. The ITSTATE should be edvanced after the execution of
an instruction except after an IT instruction.
Differential revision: http://reviews.llvm.org/D16772
llvm-svn: 259509
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test')
0 files changed, 0 insertions, 0 deletions
