[PATCH for-9.2 v3 0/6] target/sparc: emulate floating point queue when raising fp traps

[Richard Henderson]

Hi Carl,

While digging through the manual to figure out if we were really
doing the right thing raising the fp exception, I found the fpu
exception state machine.  I'm not sure it's worth emulating the
fp_exception_pending state, but it's certainly easy enough to
emulate the fp_executing/fp_exception states.

In addition, this simplifies the implementation of STDFQ,
restricts FQ to sparc32 system mode, and handles migration.

Would you please double-check this against your Solaris images?


r~


Carl Hauser (2):
  target/sparc: Add FQ and FSR.QNE
  target/sparc: Populate sparc32 FQ when raising fp exception

Richard Henderson (4):
  target/sparc: Restrict STQF to sparcv9
  target/sparc: Add FSR_QNE to tb_flags
  target/sparc: Implement STDFQ
  target/sparc: Add gen_trap_if_nofpu_fpexception

 target/sparc/cpu.h          |  30 ++++++++-
 target/sparc/fop_helper.c   |   4 ++
 target/sparc/int32_helper.c |  32 ++++-----
 target/sparc/machine.c      |  25 +++++++
 target/sparc/translate.c    | 126 ++++++++++++++++++++++++++----------
 target/sparc/insns.decode   |   4 +-
 6 files changed, 169 insertions(+), 52 deletions(-)

-- 
2.43.0