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[Qemu-devel] [PATCH 0/7] target-arm: Fix bugs in fp exception flag setti
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 0/7] target-arm: Fix bugs in fp exception flag setting |
Date: |
Fri, 6 May 2011 13:48:08 +0100 |
This patch series fixes a number of minor bugs in the ARM target where
we were not correctly setting the cumulative exception flags in the
FPSCR. It includes adding a new flag to softfloat indicating when a
denormal result has been flushed to zero (as discussed previously on
the list.)
Tested with the usual random instruction sequence testing (covering
all the neon and vfp data processing instructions which can set FPSCR
exception flags). These patches fix all the FPSCR flags bugs I found,
with the exception of those in the VCVT float-int and float32-float16
conversion routines, which are a bit trickier to fix because they are
bugs in softfloat rather than merely in the arm helper functions.
Peter Maydell (7):
target-arm: Don't set FP exceptions in recip, recip_sqrt estimate fns
target-arm: Signal InputDenormal for VRECPE, VRSQRTE, VRECPS, VRSQRTS
target-arm: Signal InvalidOp for Neon GE and GT compares of QNaN
target-arm: Refactor int-float conversions
target-arm: Add separate Neon float-int conversion helpers
softfloat: Add new flag for when denormal result is flushed to zero
target-arm: Signal Underflow when denormal flushed to zero on output
fpu/softfloat.c | 41 ++++++++++--
fpu/softfloat.h | 3 +-
target-arm/helper.c | 151 +++++++---------------------------------------
target-arm/helper.h | 70 ++++++++++++---------
target-arm/neon_helper.c | 40 ++++++-------
target-arm/op_helper.c | 74 ++++++++++++++++++++++
target-arm/translate.c | 92 ++++++++++++++++------------
7 files changed, 243 insertions(+), 228 deletions(-)
- [Qemu-devel] [PATCH 0/7] target-arm: Fix bugs in fp exception flag setting,
Peter Maydell <=
- [Qemu-devel] [PATCH 3/7] target-arm: Signal InvalidOp for Neon GE and GT compares of QNaN, Peter Maydell, 2011/05/06
- [Qemu-devel] [PATCH 7/7] target-arm: Signal Underflow when denormal flushed to zero on output, Peter Maydell, 2011/05/06
- [Qemu-devel] [PATCH 2/7] target-arm: Signal InputDenormal for VRECPE, VRSQRTE, VRECPS, VRSQRTS, Peter Maydell, 2011/05/06
- [Qemu-devel] [PATCH 1/7] target-arm: Don't set FP exceptions in recip, recip_sqrt estimate fns, Peter Maydell, 2011/05/06
- [Qemu-devel] [PATCH 6/7] softfloat: Add new flag for when denormal result is flushed to zero, Peter Maydell, 2011/05/06
- [Qemu-devel] [PATCH 5/7] target-arm: Add separate Neon float-int conversion helpers, Peter Maydell, 2011/05/06
- [Qemu-devel] [PATCH 4/7] target-arm: Refactor int-float conversions, Peter Maydell, 2011/05/06