[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 0/6] target-arm: Fix bugs in fp exception fla
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH v2 0/6] target-arm: Fix bugs in fp exception flag setting |
Date: |
Mon, 23 May 2011 23:33:58 +0200 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Thu, May 19, 2011 at 02:46:13PM +0100, Peter Maydell wrote:
> 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.
>
> v1->v2 changes:
> patches 1,2,3,4,5 are unchanged (v2 patches 4,5 are v1's 6 and 7)
> v2 patch 6 replaces the v1 patches 4,5, and makes the int-float
> conversion helpers take just a pointer to the correct fp_status
> rather than an entire CPUState pointer, as suggested by Paul Brook.
>
>
> Peter Maydell (6):
> 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
> softfloat: Add new flag for when denormal result is flushed to zero
> target-arm: Signal Underflow when denormal flushed to zero on output
> target-arm: Use correct float status for Neon int-float conversions
>
> fpu/softfloat.c | 41 ++++++++++--
> fpu/softfloat.h | 3 +-
> target-arm/helper.c | 158 +++++++++++++++++----------------------------
> target-arm/helper.h | 60 +++++++++---------
> target-arm/neon_helper.c | 40 +++++-------
> target-arm/translate.c | 148 +++++++++++++++++++++++--------------------
> 6 files changed, 223 insertions(+), 227 deletions(-)
>
Thanks, all applied.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
- [Qemu-devel] [PATCH v2 0/6] target-arm: Fix bugs in fp exception flag setting, Peter Maydell, 2011/05/19
- [Qemu-devel] [PATCH v2 1/6] target-arm: Don't set FP exceptions in recip, recip_sqrt estimate fns, Peter Maydell, 2011/05/19
- [Qemu-devel] [PATCH v2 5/6] target-arm: Signal Underflow when denormal flushed to zero on output, Peter Maydell, 2011/05/19
- [Qemu-devel] [PATCH v2 2/6] target-arm: Signal InputDenormal for VRECPE, VRSQRTE, VRECPS, VRSQRTS, Peter Maydell, 2011/05/19
- [Qemu-devel] [PATCH v2 6/6] target-arm: Use correct float status for Neon int-float conversions, Peter Maydell, 2011/05/19
- [Qemu-devel] [PATCH v2 3/6] target-arm: Signal InvalidOp for Neon GE and GT compares of QNaN, Peter Maydell, 2011/05/19
- [Qemu-devel] [PATCH v2 4/6] softfloat: Add new flag for when denormal result is flushed to zero, Peter Maydell, 2011/05/19
- Re: [Qemu-devel] [PATCH v2 0/6] target-arm: Fix bugs in fp exception flag setting,
Aurelien Jarno <=