Commit Graph

4 Commits

Author SHA1 Message Date
Konstantin Belousov
96cdb0ab9d Annotate arm userspace assembler sources stating their tolerance to
the non-executable stack.

Reviewed by:	andrew
Sponsored by:	The FreeBSD Foundation
2015-09-29 16:09:58 +00:00
Andrew Turner
2b6a6357f2 Teach bits of libc about Thumb. This adds the if-then instructions needed
to handle the ARM conditional execution.

While here fix a bug found by this in the hard-float code, cc is the
opposite of cs. The former is used for 'less than' in floating-point code
and is executed when the C (carry) bit is clear, the latter is used when
greater than, equal, or unordered, and is executed when the C bit is set.
2015-05-12 10:03:14 +00:00
Andrew Turner
cb8bcafa71 Add support for the __aeabi_c*cmp* functions. These are similar to the
existing functions with the exception they use the condition flags to
store the result.

Differential Revision:	https://reviews.freebsd.org/D872
Silence from:	current@ and numerics@
MFC after:	1 week
2014-10-14 14:27:51 +00:00
Andrew Turner
a06918a349 Add an optimised version of the float and double helper functions. These
are only used on armv6 when the vfp unit is detected. They will also be
available for the upcoming armv6hf platform, however while not used by
default there will need to be defined for any software that calls them
directly.
2014-03-16 13:16:30 +00:00