MIPS: pre-crankshaft updates to assembler and related files. (1/3)

MIPS: pre-crankshaft updates to assembler and related files. (1/3)

Highlights:
- assembler.h adds FPU definitions used for Crankshaft.
- Support optimization of mips call: jalr->jal
    - includes changes to  set_target_address_at(), support routines.
    - Add 2nd use of Apply() to update target addresses.
- Minor debugging improvement in simulator.

BUG=
TEST=

Committed: http://code.google.com/p/v8/source/detail?r=9259

[Paul Lind, 2011-09-13 07:22:25]

Hi Danno - I am submitting 3 changes tonight that bring all our mips
architecture code up to date and ready for crankshaft specific files, which I
will submit after these are reviewed and (hopefully) landed.

These are collections of mostly small changes developed while we were porting
crankshaft. Some of these are ports of your crankshaft-only commits, some are
cleanups and refactorings on our part.

This could have been split up to finer granularity/smaller patches, and I will
do that if you prefer. But this seemed to me to be reasonable.

The 3 can be landed and fully tested in sequence. So part 1 builds and passes
all tests. 2 will build/pass if 1 is landed, etc.

thanks,

paul

[danno, 2011-09-13 12:15:20]

lgtm