src/lib/libc/arm/string, branch release/11.1.0

MFC r314556-r314558

2017-03-11T02:51:29+00:00

r314556:
Correct MDSRCS use in /string/Makefile.inc.

- Remove .c files which duplicate entries in MISRCS.
- Use the same, less merge conflict prone style in all cases.
- Use MDSRCS for mips (.c and .S files both ended up in SRCS).
- Remove pointless sparc64 Makefile.inc.
- Remove uninformative foreign VCS ID entries.

Reviewed by:	emaste, imp, jhb
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9841

r314557:
Correct an misunderstanding of MDSRCS.

MDSRCS it intended to allow assembly versions of funtions with C
implementations listed in MISRCS. The selection of the correct
machdep_ldis?.c for a given architecture does not follow this pattern
and the file should be added to SRCS directly.

Reviewed by:	emaste, imp, jhb
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9841

r314558:
Garbage collect unused gdtoa related files on mips.

Reviewed by:	emase, imp, jhb
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9841

Annotate arm userspace assembler sources stating their tolerance to

2015-09-29T16:09:58+00:00

the non-executable stack.

Reviewed by:	andrew
Sponsored by:	The FreeBSD Foundation

Add the needed if-then instructions to build as Thumb-2.

2015-05-31T14:04:11+00:00

Switch to the ARM unified assembly language as the clang integrated as only

2014-11-29T15:56:52+00:00

supports it. Binutils supports it when the ".syntax unified" directive
is set.

Sponsored by:	ABT Systems Ltd

In ARM asm code, ensure that every ENTRY(foo) has a matching END(foo).

2014-08-31T17:21:51+00:00

The EABI unwind info requires a .fnend for every .fnstart, and newer
binutils will complain about seeing two .fnstart in a row.  This change
allows newer tools to compile our code.

Reported by:	bapt
Reviewed by:	imp

Merge index() and strchr() together.

2012-01-03T07:14:01+00:00

As I looked through the C library, I noticed the FreeBSD MIPS port has a
hand-written version of index(). This is nice, if it weren't for the
fact that most applications call strchr() instead.

Also, on the other architectures index() and strchr() are identical,
meaning we have two identical pieces of code in the C library and
statically linked applications.

Solve this by naming the actual file strchr.[cS] and let it use
__strong_reference()/STRONG_ALIAS() to provide the index() routine. Do
the same for rindex()/strrchr().

This seems to make the C libraries and static binaries slightly smaller,
but this reduction in size seems negligible.

The NetBSD Foundation has granted permission to remove clause 3 and 4 from

2010-03-02T22:16:40+00:00

their software.

Obtained from:	NetBSD

- Eliminate extra subcs instruction. I have not noticed before that we

2009-06-21T13:15:56+00:00

  always perform substraction now, so no instruction could be rordered
  to eliminate the conditional substraction.

- Fix strncmp on arm. Return 0 as result without performing the

2009-06-21T12:58:56+00:00

  main cycle only if the len passed is equal to 0. If end address
  overflows use last possible address as the end address.

Based on:	discussion on arm@
MFC after:	1 month

revert r191633; this breaks at91 & xscale (likely all arm)

2009-05-06T01:50:04+00:00