diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/arm/VFP |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/arm/VFP')
-rw-r--r-- | Documentation/arm/VFP/release-notes.txt | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/arm/VFP/release-notes.txt b/Documentation/arm/VFP/release-notes.txt new file mode 100644 index 000000000000..f28e0222f5e5 --- /dev/null +++ b/Documentation/arm/VFP/release-notes.txt | |||
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1 | Release notes for Linux Kernel VFP support code | ||
2 | ----------------------------------------------- | ||
3 | |||
4 | Date: 20 May 2004 | ||
5 | Author: Russell King | ||
6 | |||
7 | This is the first release of the Linux Kernel VFP support code. It | ||
8 | provides support for the exceptions bounced from VFP hardware found | ||
9 | on ARM926EJ-S. | ||
10 | |||
11 | This release has been validated against the SoftFloat-2b library by | ||
12 | John R. Hauser using the TestFloat-2a test suite. Details of this | ||
13 | library and test suite can be found at: | ||
14 | |||
15 | http://www.cs.berkeley.edu/~jhauser/arithmetic/SoftFloat.html | ||
16 | |||
17 | The operations which have been tested with this package are: | ||
18 | |||
19 | - fdiv | ||
20 | - fsub | ||
21 | - fadd | ||
22 | - fmul | ||
23 | - fcmp | ||
24 | - fcmpe | ||
25 | - fcvtd | ||
26 | - fcvts | ||
27 | - fsito | ||
28 | - ftosi | ||
29 | - fsqrt | ||
30 | |||
31 | All the above pass softfloat tests with the following exceptions: | ||
32 | |||
33 | - fadd/fsub shows some differences in the handling of +0 / -0 results | ||
34 | when input operands differ in signs. | ||
35 | - the handling of underflow exceptions is slightly different. If a | ||
36 | result underflows before rounding, but becomes a normalised number | ||
37 | after rounding, we do not signal an underflow exception. | ||
38 | |||
39 | Other operations which have been tested by basic assembly-only tests | ||
40 | are: | ||
41 | |||
42 | - fcpy | ||
43 | - fabs | ||
44 | - fneg | ||
45 | - ftoui | ||
46 | - ftosiz | ||
47 | - ftouiz | ||
48 | |||
49 | The combination operations have not been tested: | ||
50 | |||
51 | - fmac | ||
52 | - fnmac | ||
53 | - fmsc | ||
54 | - fnmsc | ||
55 | - fnmul | ||