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| author | Rainer Orth <ro@gcc.gnu.org> | 2023-09-01 11:20:42 +0200 |
|---|---|---|
| committer | Rainer Orth <ro@gcc.gnu.org> | 2023-09-01 11:20:42 +0200 |
| commit | 6ef767c0758512b285a357436358e0814e72fe9e (patch) | |
| tree | 3222371cf79e6f48ab45c9e804b5bc71703c3a19 /lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp | |
| parent | e4e56f91df6a6078a82abd59e00a93b63de664b7 (diff) | |
[MC][ELF] Don't emit .note.GNU-stack sections on Solaris
LLVM currently emits `.note.GNU-stack` sections on all ELF targets.
However, Solaris ld doesn't know/care about them. Even worse, with the
revised Solaris GNU ld patch (D85309 <https://reviews.llvm.org/D85309>),
there are hundreds of warnings:
/usr/gnu/bin/ld: warning: /usr/lib/amd64/crtn.o: missing .note.GNU-stack
section implies executable stack
/usr/gnu/bin/ld: NOTE: This behaviour is deprecated and will be removed
in a future version of the linker
The Solaris crts are not going to change here, and even if they were, GNU
ld would emit `PT_GNU_STACK` segments that Solaris `ld.so.1` ignores.
So the note sections are completely useless on Solaris and this patch
disables their creation.
Instead, Solaris has its own mechanisms to control stack executability:
`PT_SUNW_STACK`, `DT_SUNW_SX_NXSTACK` and the system-wide control via
`sxadm` where `nxstack` defaults to on.
Tested on `amd64-pc-solaris2.11` and `sparcv9-sun-solaris2.11` with Solaris
ld and GNU ld, and `x86_64-pc-linux-gnu`.
Differential Revision: https://reviews.llvm.org/D159179
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp')
0 files changed, 0 insertions, 0 deletions