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| author | Peter Wu <peter@lekensteyn.nl> | 2019-01-16 23:28:51 +0000 |
|---|---|---|
| committer | Peter Wu <peter@lekensteyn.nl> | 2019-01-16 23:28:51 +0000 |
| commit | 5391489674555fc1835530b2eea727b727d96b7a (patch) | |
| tree | e912cfba2c82bcf55861675d94289d0a3019dd40 /compiler-rt | |
| parent | 669edb5ce5fe5b71e9850e420126c2ef50499dcd (diff) | |
| download | bcm5719-llvm-5391489674555fc1835530b2eea727b727d96b7a.tar.gz bcm5719-llvm-5391489674555fc1835530b2eea727b727d96b7a.zip | |
[ELF][X86_64] Fix corrupted LD -> LE optimization for TLS without PLT
The LD -> LE optimization for Thread-Local Storage without PLT requires
an additional "66" prefix, otherwise the next instruction will be
corrupted, causing runtime misbehavior (crashes) of the linked object.
The other (GD -> IE/LD) optimizations are the same with or without PLT,
but add tests for completeness. The instructions are copied from
https://raw.githubusercontent.com/wiki/hjl-tools/x86-psABI/x86-64-psABI-1.0.pdf#subsection.11.1.2
This does not try to address ILP32 (x32) support.
Fixes https://bugs.llvm.org/show_bug.cgi?id=37303
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D56779
llvm-svn: 351396
Diffstat (limited to 'compiler-rt')
0 files changed, 0 insertions, 0 deletions
