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:
The operations which have been tested with this package are:
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:
The combination operations have not been tested: