Adds the BreakpointRuntime stub to ARM and MIPS.

Adds the BreakpointRuntime stub to ARM and MIPS.

Also:
- Makes some stub calls patachable.
- Updates pkg.status for an unrelated failing test.

R=regis@google.com

Committed: https://code.google.com/p/dart/source/detail?r=28066

[zra, 2013-09-30 18:48:28]

This is the fix for:

https://code.google.com/p/dart/issues/detail?id=13690

[Florian Schneider, 2013-09-30 18:57:59]

dbc: Thanks for fixing this!

https://codereview.chromium.org/25092010/diff/1/runtime/vm/stub_code_mips.cc
File runtime/vm/stub_code_mips.cc (right):

https://codereview.chromium.org/25092010/diff/1/runtime/vm/stub_code_mips.cc#...
runtime/vm/stub_code_mips.cc:2006: __ sw(S5, Address(SP, 2 * kWordSize));
The ARM assembler has macros PushList/PopList. Would that make sense to add for
MIPS as well?

[regis, 2013-09-30 19:52:17]

LGTM

[zra, 2013-09-30 20:17:15]

https://codereview.chromium.org/25092010/diff/1/runtime/vm/stub_code_mips.cc
File runtime/vm/stub_code_mips.cc (right):

https://codereview.chromium.org/25092010/diff/1/runtime/vm/stub_code_mips.cc#...
runtime/vm/stub_code_mips.cc:2006: __ sw(S5, Address(SP, 2 * kWordSize));
On 2013/09/30 18:57:59, Florian Schneider wrote:
> The ARM assembler has macros PushList/PopList. Would that make sense to add
for
> MIPS as well?

We have the macro on ARM because there is a convenient instruction that
pushes/pops a list of registers according to bits set in an immediate value.
Since there isn't an analogous instruction on MIPS, we don't have a similar
macro.

[zra, 2013-09-30 20:17:58]

Committed patchset #2 manually as r28066 (presubmit successful).