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| author | Dmitry Vyukov <dvyukov@google.com> | 2016-06-29 11:09:36 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2016-06-29 15:30:54 +0000 |
| commit | bb337372fb6e171a6e8a7665ce91eda734f8cdd2 (patch) | |
| tree | b92f2da03d5a519be2f82499f085233319b2f542 /src/syscall/exec_linux_test.go | |
| parent | 25a609556aff7700c864f2dc69be01652fd801ab (diff) | |
| download | go-bb337372fb6e171a6e8a7665ce91eda734f8cdd2.tar.xz | |
runtime: fix race atomic operations on external memory
The assembly is broken: it does `MOVQ g(R12), R14` expecting that
R12 contains tls address, but it does not do get_tls(R12) before.
This magically works on linux: `MOVQ g(R12), R14` is compiled to
`mov %fs:0xfffffffffffffff8,%r14` which does not use R12.
But it crashes on windows.
Add explicit `get_tls(R12)`.
Fixes #16206
Change-Id: Ic1f21a6fef2473bcf9147de6646929781c9c1e98
Reviewed-on: https://go-review.googlesource.com/24590
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'src/syscall/exec_linux_test.go')
0 files changed, 0 insertions, 0 deletions