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[Qemu-devel] [PATCH v4 0/4] ARM: fix Neon VRECPE and VRSQRTE instruction
From: |
Christophe Lyon |
Subject: |
[Qemu-devel] [PATCH v4 0/4] ARM: fix Neon VRECPE and VRSQRTE instructions. |
Date: |
Fri, 18 Feb 2011 15:49:13 +0100 |
These 4 patches fix the ARM Neon vrecpe and vrsqrte instructions by
matching the algorithms descibed in the ARM ARM.
With these patches, qemu passes my ARM/Neon tests.
Compared to v3, I have split patch #1 into 2 pieces (#1 and #2 here),
and fixed comments from Peter.
Patch #1 modifies softfloat by exporting floatXX_default_nan, i.e. moving all
these definitions from softfloat-specialize.h to softfloat.h
Patch #2 introduces a new utility function float32_set_sign() to help
return the right special values (-0, -infinity), as well as new
constants: float32_infinity, float64_half, float64_256 and
float64_512.
Patch #3 uses these newly exported values and uses the VRECPE
algorithm described in the ARM ARM.
Patch #4 uses these newly exported values and uses the VRSQRTE
algorithm described in the ARM ARM.
Thanks to Peter for his careful reviews.
Christophe Lyon (4):
softfloat: move all default NaN definitions to softfloat.h.
softfloat: add float32_set_sign(), float32_infinity, float64_half,
float64_256 and float64_512.
target-arm: fix support for VRECPE.
target-arm: fix support for VRSQRTE.
fpu/softfloat-specialize.h | 68 ---------------
fpu/softfloat.h | 78 +++++++++++++++++
target-arm/helper.c | 204 +++++++++++++++++++++++++++++++++++++++-----
3 files changed, 260 insertions(+), 90 deletions(-)
--
1.7.2.3
- [Qemu-devel] [PATCH v4 0/4] ARM: fix Neon VRECPE and VRSQRTE instructions.,
Christophe Lyon <=
- [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Christophe Lyon, 2011/02/18
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Aurelien Jarno, 2011/02/20
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Peter Maydell, 2011/02/20
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Aurelien Jarno, 2011/02/20
- Re: [Qemu-devel] [PATCH 2/4] softfloat: add float32_set_sign(), float32_infinity, float64_half, float64_256 and float64_512., Christophe Lyon, 2011/02/21
[Qemu-devel] [PATCH 3/4] target-arm: fix support for VRECPE., Christophe Lyon, 2011/02/18
[Qemu-devel] [PATCH 4/4] target-arm: fix support for VRSQRTE., Christophe Lyon, 2011/02/18
[Qemu-devel] [PATCH 1/4] softfloat: move all default NaN definitions to softfloat.h., Christophe Lyon, 2011/02/18