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[Qemu-devel] [PATCH 0/4] target-arm: Fix VRSQRTS
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 0/4] target-arm: Fix VRSQRTS |
Date: |
Fri, 7 Jan 2011 09:26:23 +0000 |
This patch series fixes various bugs in VRSQRTS including the
major one that it was calculating completely the wrong value
(missing a division by 2).
It also introduces the infrastructure to support the ARM
"Standard FPSCR Value" as used for operations which use "ARM
standard floating-point arithmetic" rather than being controlled
by the rounding/flush/NaN settings in the FPSCR. (Most Neon FP
instructions should be using this, so there will be subsequent
patches to use it with other instructions too.)
The "missing divide" bug was fixed in meego-qemu commit 438a549e0;
the remaining fixes here are new.
Tested in the usual random-instruction-generation fashion.
Peter Maydell (4):
softfloat: Add float32_is_zero_or_denormal() function
target-arm: Fix implementation of VRSQRTS
target-arm: Add support for 'Standard FPSCR Value' as used by Neon
target-arm: Use the standard FPSCR value for VRSQRTS
fpu/softfloat.h | 5 +++++
target-arm/cpu.h | 13 +++++++++++++
target-arm/helper.c | 17 +++++++++++++++--
3 files changed, 33 insertions(+), 2 deletions(-)
- [Qemu-devel] [PATCH 0/4] target-arm: Fix VRSQRTS,
Peter Maydell <=
- [Qemu-devel] [PATCH 3/4] target-arm: Add support for 'Standard FPSCR Value' as used by Neon, Peter Maydell, 2011/01/07
- [Qemu-devel] [PATCH 2/4] target-arm: Fix implementation of VRSQRTS, Peter Maydell, 2011/01/07
- [Qemu-devel] [PATCH 1/4] softfloat: Add float32_is_zero_or_denormal() function, Peter Maydell, 2011/01/07
- [Qemu-devel] [PATCH 4/4] target-arm: Use the standard FPSCR value for VRSQRTS, Peter Maydell, 2011/01/07
- Re: [Qemu-devel] [PATCH 0/4] target-arm: Fix VRSQRTS, Aurelien Jarno, 2011/01/14