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go / go / 7af0839e11378b153feaa9570aeb2cdcdc06b75f
commit7af0839e11378b153feaa9570aeb2cdcdc06b75f[log] [tgz]
authorMichael Hudson-Doyle <michael.hudson@canonical.com>Thu Nov 12 12:55:57 2015 +1300
committerMichael Hudson-Doyle <michael.hudson@canonical.com>Sun Nov 15 06:42:19 2015 +0000
treed9393d932ebba98cbc50518a3fcc0ed29bf6c313
parent52393ad036e795f2da1e2692f17f76ccb00fb410 [diff]
cmd/go, runtime: always use position-independent code to invoke vsyscall helper on linux/386

golang.org/cl/16346 changed the runtime on linux/386 to invoke the vsyscall
helper via a PIC sequence (CALL 0x10(GS)) when dynamically linking. But it's
actually quite easy to make that code sequence work all the time, so do that,
and remove the ugly machinery that passed the buildmode from the go tool to the
assembly.

This means enlarging m.tls so that we can safely access 0x10(GS) (GS is set to
&m.tls + 4, so 0x10(GS) accesses m_tls[5]).

Change-Id: I1345c34029b149cb5f25320bf19a3cdd73a056fa
Reviewed-on: https://go-review.googlesource.com/16796
Reviewed-by: Ian Lance Taylor <iant@golang.org>
3 files changed
tree: d9393d932ebba98cbc50518a3fcc0ed29bf6c313
  1. api/
  2. doc/
  3. lib/
  4. misc/
  5. src/
  6. test/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. CONTRIBUTING.md
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. PATENTS
  15. README.md
  16. robots.txt
README.md

The Go Programming Language

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For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:

export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin

See https://golang.org/doc/install or doc/install.html for more details.