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| author | Jonathan Corbet <corbet@lwn.net> | 2023-05-04 01:47:22 +0300 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2023-06-12 15:33:40 +0300 |
| commit | e790a4ce529041bb21ec0b69a38c1b92f29df2cf (patch) | |
| tree | 56f44e5f8f8fe8d94d43a4bd7743e82e4e7889d6 /Documentation/arch/arm/vfp/release-notes.rst | |
| parent | f1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6 (diff) | |
| download | linux-e790a4ce529041bb21ec0b69a38c1b92f29df2cf.tar.xz | |
arm: docs: Move Arm documentation to Documentation/arch/
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy. Move
Documentation/arm into arch/ (along with the Chinese equvalent
translations).
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Acked-by: Alexandre TORGUE <alexandre.torgue@foss.st.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/arch/arm/vfp/release-notes.rst')
| -rw-r--r-- | Documentation/arch/arm/vfp/release-notes.rst | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/arch/arm/vfp/release-notes.rst b/Documentation/arch/arm/vfp/release-notes.rst new file mode 100644 index 000000000000..c6b04937cee3 --- /dev/null +++ b/Documentation/arch/arm/vfp/release-notes.rst @@ -0,0 +1,57 @@ +=============================================== +Release notes for Linux Kernel VFP support code +=============================================== + +Date: 20 May 2004 + +Author: Russell King + +This is the first release of the Linux Kernel VFP support code. It +provides support for the exceptions bounced from VFP hardware found +on ARM926EJ-S. + +This release has been validated against the SoftFloat-2b library by +John R. Hauser using the TestFloat-2a test suite. Details of this +library and test suite can be found at: + + http://www.jhauser.us/arithmetic/SoftFloat.html + +The operations which have been tested with this package are: + + - fdiv + - fsub + - fadd + - fmul + - fcmp + - fcmpe + - fcvtd + - fcvts + - fsito + - ftosi + - fsqrt + +All the above pass softfloat tests with the following exceptions: + +- fadd/fsub shows some differences in the handling of +0 / -0 results + when input operands differ in signs. +- the handling of underflow exceptions is slightly different. If a + result underflows before rounding, but becomes a normalised number + after rounding, we do not signal an underflow exception. + +Other operations which have been tested by basic assembly-only tests +are: + + - fcpy + - fabs + - fneg + - ftoui + - ftosiz + - ftouiz + +The combination operations have not been tested: + + - fmac + - fnmac + - fmsc + - fnmsc + - fnmul |