Fix profiling on ARM64.

Fix profiling on ARM64.

Linux/Android broken in 91bc8005fe28a4d613c3c9d26f03fd6ae08b83aa.

iOS was unimplemented.

R=johnmccutchan@google.com

Committed: https://github.com/dart-lang/sdk/commit/6d3bb00887537bf21e262344e7a36b3e3b0b1ff5

[rmacnak, 2015-10-30 00:45:23]

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

[rmacnak, 2015-10-30 00:45:23]

I had only updated this for ARM32...

[Cutch, 2015-10-30 02:29:57]

LGTM with a suggestion

https://codereview.chromium.org/1428893003/diff/1/runtime/vm/signal_handler_a...
File runtime/vm/signal_handler_android.cc (right):

https://codereview.chromium.org/1428893003/diff/1/runtime/vm/signal_handler_a...
runtime/vm/signal_handler_android.cc:69: sp =
static_cast<uintptr_t>(mcontext.regs[19]);
Could we add #define for the register in constants_??.h  and use that here
instead of the number?

[rmacnak, 2015-10-30 16:17:41]

https://codereview.chromium.org/1428893003/diff/1/runtime/vm/signal_handler_a...
File runtime/vm/signal_handler_android.cc (right):

https://codereview.chromium.org/1428893003/diff/1/runtime/vm/signal_handler_a...
runtime/vm/signal_handler_android.cc:69: sp =
static_cast<uintptr_t>(mcontext.regs[19]);
On 2015/10/30 02:29:57, Cutch wrote:
> Could we add #define for the register in constants_??.h  and use that here
> instead of the number?

constants_??.h is included for the target architecture, but not host.

[rmacnak, 2015-10-30 16:26:29]

Committed patchset #1 (id:1) manually as
6d3bb00887537bf21e262344e7a36b3e3b0b1ff5 (presubmit successful).