Support profiling of simulated Dart code on mips, arm, and arm64.

Support profiling of simulated Dart code on mips, arm, and arm64.

R=johnmccutchan@google.com

Committed: https://code.google.com/p/dart/source/detail?r=45430

[regis, 2015-04-24 23:00:45]

regis@google.com changed reviewers:
+ johnmccutchan@google.com

[regis, 2015-04-24 23:00:45]

I still need to check if the lr_ field of a sample is really used, and set it
properly when in simulated Dart code. See TODO.

Thanks,
Regis

[Cutch, 2015-04-24 23:05:24]

On 2015/04/24 23:00:45, regis wrote:
> I still need to check if the lr_ field of a sample is really used, and set it
> properly when in simulated Dart code. See TODO.
> 
> Thanks,
> Regis

We will probably use it in the near future- to have a more precise return
address.

[regis, 2015-04-25 00:08:21]

Sounds good. The link register is now set properly.

PTAL

Thanks,
Regis

[Cutch, 2015-04-27 19:55:23]

lgtm

[regis, 2015-04-27 19:56:07]

Committed patchset #2 (id:20001) manually as r45430 (presubmit successful).