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Michael Pratt 3634594790 runtime: start ARM atomic kernel helper traceback in caller 
Like the VDSO, we cannot directly traceback from the Linux kernel ARM
atomic/barrier helpers. However, unlike the VDSO, this functions are
extremely simple. Neither of the functions we use, kuser_cmpxchg and
kuser_memory_barrier, touch SP or LR.

We can use this to our advantage to read LR and simply start tracebacks
in the caller.

Fixes #49182

Change-Id: I890edbeb7c128938000fe7baf6f913c02a956edd
Reviewed-on: https://go-review.googlesource.com/c/go/+/362977
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
 		2021-11-12 21:06:35 +00:00
.github .github: update IRC server 2021-09-30 19:56:27 +00:00
api syscall: migrate new UDP send/recv API to internal/syscall/unix 2021-11-03 21:45:33 +00:00
doc spec: fix a broken link 2021-11-11 19:44:13 +00:00
lib/time lib/time, time/tzdata: update to 2021e 2021-11-11 05:16:39 +00:00
misc misc/cgo/testshared: correct test of gccgo version number 2021-11-11 04:54:05 +00:00
src runtime: start ARM atomic kernel helper traceback in caller 2021-11-12 21:06:35 +00:00
test cmd/compile: fix missing transformEarlyCall for OXDOT in subster.node 2021-11-12 18:57:22 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Leonard Wang (individual CLA) 2021-11-02 06:25:39 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add Leonard Wang (individual CLA) 2021-11-02 06:25:39 +00:00
LICENSE
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PATENTS
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README.md README.md: update contribute URL 2021-09-30 13:33:21 +00:00
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

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Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://golang.org/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.