summaryrefslogtreecommitdiff
path: root/Documentation/arm/vfp
diff options
context:
space:
mode:
authorMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-04-14 21:51:10 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-07-15 15:20:24 +0300
commitdc7a12bdfccd94c31f79e294f16f7549bd411b49 (patch)
tree81da5ca148347b94c4539234f50d4bca6465e2f8 /Documentation/arm/vfp
parent0d07cf5e53a21e35289adc3ab99b6804ff0c3833 (diff)
downloadlinux-dc7a12bdfccd94c31f79e294f16f7549bd411b49.tar.xz
docs: arm: convert docs to ReST and rename to *.rst
Converts ARM the text files to ReST, preparing them to be an architecture book. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Reviewed-by Corentin Labbe <clabbe.montjoie@gmail.com> # For sun4i-ss
Diffstat (limited to 'Documentation/arm/vfp')
-rw-r--r--Documentation/arm/vfp/release-notes.rst57
1 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/arm/vfp/release-notes.rst b/Documentation/arm/vfp/release-notes.rst
new file mode 100644
index 000000000000..c6b04937cee3
--- /dev/null
+++ b/Documentation/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