[PATCH v2 0/5] Add support for MIPS32/64 revision 6

[Faraz Shahbazker]

Changes from v1: style and indentation fixes from previous review.

This series adds support to GDB and simulator for MIPSR6.  We introduce
partial support for IEEE 754-2008 in the common code including NaN
semantics for MIN/MAX/ABS/NEG operations and a CLASSIFY operation.
This can enabled by invoking sim_fpu_set_mode().

The multi-simulator model supports R6 in addition to previous
revisions and the engine picks the appropriate revision based on flags
in the ELF header where possible.

Faraz Shahbazker (5):
  sim: Allow toggling of quiet NaN-bit semantics
  sim: Factor out NaN handling in floating point operations
  sim: Add partial support for IEEE 754-2008
  sim: mips: Add simulator support for mips32r6/mips64r6
  gdb: mips: Add MIPSR6 support

 gdb/mips-tdep.c                    |  518 +++++++++++-
 sim/common/sim-bits.h              |    5 +
 sim/common/sim-fpu.c               |  344 ++++----
 sim/common/sim-fpu.h               |   17 +-
 sim/mips/Makefile.in               |    1 +
 sim/mips/configure                 |   21 +-
 sim/mips/configure.ac              |   15 +-
 sim/mips/cp1.c                     |  409 +++++++++-
 sim/mips/cp1.h                     |    6 +
 sim/mips/interp.c                  |    6 +-
 sim/mips/micromips.igen            |    4 +-
 sim/mips/mips.igen                 |  378 ++++++++-
 sim/mips/mips3264r2.igen           |   30 +
 sim/mips/mips3264r6.igen           | 1226 ++++++++++++++++++++++++++++
 sim/mips/sim-main.h                |   97 ++-
 sim/testsuite/mips/basic.exp       |   66 +-
 sim/testsuite/mips/hilo-hazard-3.s |    2 +-
 sim/testsuite/mips/r2-fpu.s        |   31 +
 sim/testsuite/mips/r6-64.s         |  157 ++++
 sim/testsuite/mips/r6-branch.s     |  290 +++++++
 sim/testsuite/mips/r6-forbidden.s  |   51 ++
 sim/testsuite/mips/r6-fpu.s        |  446 ++++++++++
 sim/testsuite/mips/r6-llsc-dp.s    |   57 ++
 sim/testsuite/mips/r6-llsc-wp.s    |   41 +
 sim/testsuite/mips/r6-removed.csv  |   68 ++
 sim/testsuite/mips/r6-removed.s    |   18 +
 sim/testsuite/mips/r6.s            |  163 ++++
 sim/testsuite/mips/testutils.inc   |   55 ++
 sim/testsuite/mips/utils-r6.inc    |  150 ++++
 29 files changed, 4402 insertions(+), 270 deletions(-)
 create mode 100644 sim/mips/mips3264r6.igen
 create mode 100644 sim/testsuite/mips/r2-fpu.s
 create mode 100644 sim/testsuite/mips/r6-64.s
 create mode 100644 sim/testsuite/mips/r6-branch.s
 create mode 100644 sim/testsuite/mips/r6-forbidden.s
 create mode 100644 sim/testsuite/mips/r6-fpu.s
 create mode 100644 sim/testsuite/mips/r6-llsc-dp.s
 create mode 100644 sim/testsuite/mips/r6-llsc-wp.s
 create mode 100644 sim/testsuite/mips/r6-removed.csv
 create mode 100644 sim/testsuite/mips/r6-removed.s
 create mode 100644 sim/testsuite/mips/r6.s
 create mode 100644 sim/testsuite/mips/utils-r6.inc

-- 
2.25.1