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misc/nacl: add go_nacl_arm_exec, update README

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LGTM=dave, rsc
R=rsc, iant, dave
CC=golang-codereviews
https://golang.org/cl/109390043
This commit is contained in:
Shenghou Ma 2014-07-10 15:15:32 -04:00
parent 366f88f3e4
commit 0829533b6e
2 changed files with 17 additions and 3 deletions
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10
misc/nacl/README
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@ -3,10 +3,11 @@ Native Client
This document outlines the basics of building and developing the Go runtime and programs in the Native Client (NaCl) environment.
Go 1.3 supports two architectures
Go 1.3 supports three architectures
* nacl/386 which is standard 386.
* nacl/amd64p32 which is a 64 bit architecture, where the address space is limited to a 4gb window.
* nacl/arm which is 32-bit ARMv7A architecture with 1GB address space.
For background it is recommended that you read http://golang.org/s/go13nacl.
@ -28,12 +29,14 @@ The zip file contains a small skeleton that can be used to download the correct
% cd /opt/nacl_sdk
% ./naclsdk update
At this time pepper_33 is the stable version. If naclsdk downloads a later version, please adjust accordingly.
At this time pepper_33 is the stable version. If naclsdk downloads a later version, please adjust accordingly. As of June 2014, only the canary sdk provides support for nacl/arm.
The cmd/go helper scripts expect that the runtime loaders, sel_ldr_x86_{32,64} are in your path. I find it easiest to make a symlink from the NaCl distribution to my $GOPATH/bin directory.
The cmd/go helper scripts expect that the runtime loaders, sel_ldr_{x86_{32,64},arm} and nacl_helper_bootstrap_arm are in your path. I find it easiest to make a symlink from the NaCl distribution to my $GOPATH/bin directory.
% ln -nfs /opt/nacl_sdk/pepper_33/tools/sel_ldr_x86_32 $GOPATH/bin/sel_ldr_x86_32
% ln -nfs /opt/nacl_sdk/pepper_33/tools/sel_ldr_x86_64 $GOPATH/bin/sel_ldr_x86_64
% ln -nfs /opt/nacl_sdk/pepper_canary/tools/sel_ldr_arm $GOPATH/bin/sel_ldr_arm
% ln -nfs /opt/nacl_sdk/pepper_canary/tools/nacl_helper_bootstrap_arm $GOPATH/bin/nacl_helper_bootstrap_arm # only required for NaCl/ARM.
Support scripts
---------------
@ -42,6 +45,7 @@ Symlink the two scripts in this directory into your $PATH, just as you did with
% ln -nfs $GOROOT/go/misc/nacl/go_nacl_amd64p32_exec $GOPATH/bin/go_nacl_amd64p32_exec
% ln -nfs $GOROOT/go/misc/nacl/go_nacl_386_exec $GOPATH/bin/go_nacl_386_exec
% ln -nfs $GOROOT/go/misc/nacl/go_nacl_arm_exec $GOPATH/bin/go_nacl_arm_exec
Building and testing
--------------------

10
misc/nacl/go_nacl_arm_exec Executable file
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@ -0,0 +1,10 @@
#!/bin/bash
eval $(go env)
export NACLENV_GOARCH=$GOARCH
export NACLENV_GOOS=$GOOS
export NACLENV_GOROOT=/go
export NACLENV_NACLPWD=$(pwd | sed "s;$GOROOT;/go;")
exec nacl_helper_bootstrap_arm $(which sel_ldr_arm) --reserved_at_zero=0xXXXXXXXXXXXXXXXX -l /dev/null -S -e "$@"