labath added subscribers: MaskRay, krytarowski.
labath added a comment.
I don't really understand what's going on, but it seems that the lack of the
`.note.GNU-stack` section causes the data section to be executable too (at
least on my machine, anyway). Which means that using the data address will not
help. :( I'm cc'ing some people who know more about dynamic linkers to see if
anyone can explain this behavior...
One sure way to get a non-executable memory address would be to allocate
something on the heap (in the C file), but I think @jankratochvil's approach of
adding the .note.GNU-stack is simpler, and so far it seems that it works
everywhere. The section directive will trip up the non-linux assemblers though,
so it needs to be `#ifdef __linux__` (afaict `#ifdefs` work just fine in asm
files when invoking the processing through clang)...
================
Comment at: lldb/test/Shell/Unwind/Inputs/thread-step-out-ret-addr-check.s:18
add $0x10, %rsp
ret
----------------
This should be 0x08, or you'll should push one more value to stack in asm_main.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D71789/new/
https://reviews.llvm.org/D71789
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