PPC/s390: [builtins] Introduce a builtin for Abort().

PPC/s390: [builtins] Introduce a builtin for Abort().

Port 9be015a254cfff871c56cd129523a729637e9158

Original commit message:

    Calling Runtime::kAbort through a builtin instead of the c-entry stub
    will allow to generate the call in a background thread, because a
    builtin provides its own handle, whereas a code stub does not.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Committed: https://crrev.com/a660062de542328d3c25329838a1d0646f815b0d
Cr-Commit-Position: refs/heads/master@{#37877}

[JaideepBajwa, 2016-07-19 17:58:53]

PTAL

[john.yan, 2016-07-19 18:00:00]

lgtm

[JaideepBajwa, 2016-07-19 18:00:11]

The CQ bit was checked by bjaideep@ca.ibm.com

[commit-bot: I haz the power, 2016-07-19 18:00:21]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-19 18:22:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-19 18:25:05]

Description was changed from

==========
PPC/s390: [builtins] Introduce a builtin for Abort().

Port 9be015a254cfff871c56cd129523a729637e9158

Original commit message:

    Calling Runtime::kAbort through a builtin instead of the c-entry stub
    will allow to generate the call in a background thread, because a
    builtin provides its own handle, whereas a code stub does not.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N
==========

to

==========
PPC/s390: [builtins] Introduce a builtin for Abort().

Port 9be015a254cfff871c56cd129523a729637e9158

Original commit message:

    Calling Runtime::kAbort through a builtin instead of the c-entry stub
    will allow to generate the call in a background thread, because a
    builtin provides its own handle, whereas a code stub does not.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Committed: https://crrev.com/a660062de542328d3c25329838a1d0646f815b0d
Cr-Commit-Position: refs/heads/master@{#37877}
==========

[commit-bot: I haz the power, 2016-07-19 18:25:06]

Patchset 1 (id:??) landed as
https://crrev.com/a660062de542328d3c25329838a1d0646f815b0d
Cr-Commit-Position: refs/heads/master@{#37877}