[lldb-dev] [Bug 23879] New: [stack unwinding][arm] "push {sp}" confuses the instruction emulation based unwinding on arm

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=23879

            Bug ID: 23879
           Summary: [stack unwinding][arm] "push {sp}" confuses the
                    instruction emulation based unwinding on arm
           Product: lldb
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at cs.uiuc.edu
          Reporter: tberghammer at google.com
    Classification: Unclassified

Unwinding from the following functions doesn't work on Android 5.1 ARM at some
address:
__aeabi_ldivmod, __aeabi_uldivmod

The issue caused by a "push {sp}" instruction because the instruction emulator
can't keep track of the value of the sp of the previous frame when it is
[CFA+#imm]+#imm

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