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The Go programming language
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Russ Cox 2c98a3bc2e cmd/5l, runtime: fix divide for profiling tracebacks on ARM 
Two bugs:
1. The first iteration of the traceback always uses LR when provided,
which it is (only) during a profiling signal, but in fact LR is correct
only if the stack frame has not been allocated yet. Otherwise an
intervening call may have changed LR, and the saved copy in the stack
frame should be used. Fix in traceback_arm.c.

2. The division runtime call adds 8 bytes to the stack. In order to
keep the traceback routines happy, it must copy the saved LR into
the new 0(SP). Change

        SUB $8, SP

into

        MOVW    0(SP), R11 // r11 is temporary, for use by linker
        MOVW.W  R11, -8(SP)

to update SP and 0(SP) atomically, so that the traceback always
sees a saved LR at 0(SP).

Fixes #6681.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/19910044
 		2013-10-31 18:15:55 +00:00
api api: add go1.2.txt, use in tests 2013-10-18 13:36:59 +09:00
doc doc/go1.2.html: delete repeated word 2013-10-30 09:39:20 -07:00
include build: remove various uses of C undefined behavior 2013-09-09 15:07:23 -04:00
lib plan9: correct create permissions with union directory 2013-10-23 10:28:28 -04:00
misc undo CL 19010044 / dbcd720e5396 2013-10-29 22:17:14 -04:00
src cmd/5l, runtime: fix divide for profiling tracebacks on ARM 2013-10-31 18:15:55 +00:00
test test/mapnan: use time.Now instead of syscall.Getrusage 2013-10-22 18:33:37 -04:00
.hgignore build: ignore new zfiles, delete temp goplay binary in run.bash 2013-08-02 19:14:13 -07:00
.hgtags tag go1.2rc2 2013-10-18 14:01:00 +09:00
AUTHORS A+C: Jakob Borg (individual CLA). 2013-10-30 09:27:02 +11:00
CONTRIBUTORS A+C: Jakob Borg (individual CLA). 2013-10-30 09:27:02 +11:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

README 

This is the source code repository for the Go programming language.  

For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.

After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.

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

--

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 README).  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.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 doc/install.html for more details.