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go / go / f1515a01fd5d77b964194d3830d36ae006823ea3
commitf1515a01fd5d77b964194d3830d36ae006823ea3[log] [tgz]
authorMichael Munday <munday@ca.ibm.com>Mon Sep 12 13:33:00 2016 -0400
committerMichael Munday <munday@ca.ibm.com>Mon Sep 12 18:06:01 2016 +0000
tree227d76c14f9e173dbfb1d6e8d1e6bda4302b3eee
parent43bdfa9337c136f4e19122914c082f34045d9509 [diff]
runtime, math/big: allow R0 on s390x to contain values other than 0

The new SSA backend for s390x can use R0 as a general purpose register.
This change modifies assembly code to either avoid using R0 entirely
or explicitly set R0 to 0.

R0 can still be safely used as 0 in address calculations.

Change-Id: I3efa723e9ef322a91a408bd8c31768d7858526c8
Reviewed-on: https://go-review.googlesource.com/28976
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
3 files changed
tree: 227d76c14f9e173dbfb1d6e8d1e6bda4302b3eee
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
README.md

The Go Programming Language

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Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.

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.