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6 Commits

Author SHA1 Message Date
Marcus Shawcroft
2c8e31d654 [ARM] Reorganize strlen selection. 
Remove automake and autoconf selection of strchr implementation in
favour of conditional compilation in strlen.c.
 2015-11-13 11:52:01 +00:00
Marcus Shawcroft
52f5864096 [ARM] Refactor strlen.c #if nesting. 
This patch flattens the condition code selection used in strlen in an
attempt to make the guarding condition for each alternative
implementation clearer and to structure the logic in a manner that
makes it easier to maintain complementary logic between the
alternative 'C' and assembler implementations.

Tested by building newlib and comparing libc.a binaries before and
after for all permutations of:

  Architectures:
    armv4 armv4t armv5 armv5t armv5te armv6 armv6j armv6k
    armv6z armv6kz armv6t2 armv6-m armv6s-m armv7 armv7-a
    armv7ve armv7-r armv7-m armv7e-m armv8-a iwmmxt iwmmxt2

  ISAs:
    thumb arm

  Optimization Levels:
    Os O2

  Excluding:
    armv6s-m -mthumb
    armv6-m -mthumb

    armv6zk -mthumb
    armv6z -mthumb
    armv6k -mthumb
    armv6j -mthumb
 2015-11-13 11:51:31 +00:00
Jeff Johnston
c8a01afd97 2014-09-05 Hale Wang <hale.wang@arm.com> 
* libc/machine/arm/memchr.S: Clean up the wrapper.
        * libc/machine/arm/memcpy.S: Likewise.
        * libc/machine/arm/memchr-stub.c: Delete this redundant file.
        * libc/machine/arm/memcpy-stub.c: Likewise.
        * libc/machine/arm/strcmp.S: Add speed-preferred wrapper.
        * libc/machine/arm/strlen.S: Likewise.
        * libc/machine/arm/Makefile.am: Add dependencies.
        * libc/machine/arm/Makefile.in: Regenerated.
        * libc/machine/arm/configure.in: Add dependencies.
        * libc/machine/arm/configure: Regenerated.
 2014-09-05 17:26:42 +00:00
Nick Clifton
d6f6573a5f * libc/machine/arm/Makefile.am (lib_a_SOURCES): Add memchr-stub.c, 
memchr.S.
	* libc/machine/arm/arm_asm.h: Add ifdef to allow it to be included
	in .S files.
	* libc/machine/arm/memchr-stub.c: New file - just selects what to
	compile.
	* libc/machine/arm/memchr.S: New file - ARMv6t2/v7 version.

	* libc/machine/arm/Makefile.am (lib_a_SOURCES): Add strlen-armv7.S.
	* libc/machine/arm/strlen-armv7.S: New file.
	* libc/machine/arm/strlen.c: Add ifdef optimised code so it isn't
	for v7 or 6t2.

	* libc/machine/arm/Makefile.in: Regenerate.
 2011-10-18 11:35:17 +00:00
Jeff Johnston
d70118655b 2009-03-16 Mark Mitchell <mark@codesourcery.com> 
* libc/machine/arm/strlen.c (strlen): Fix defect in Thumb-2 mode.

2009-03-16  Richard Earnshaw  <rearnsha@arm.com>

        * libc/machine/arm/strlen.c (strlen): Correctly detect
        end-of-string.
        * libc/machine/arm/strcpy.c (strcpy): Likewise.
        * libc/machine/arm/strcmp.c (strcmp, strcmp_unaligned): Likewise.
 2009-03-16 20:12:30 +00:00
Jeff Johnston
2b7e0645c9 2009-01-21 Richard Earnshaw <rearnsha@arm.com> 
* libc/machine/arm/arm_asm.h: New file.
        * libc/machine/arm/strlen.c: New file.
        * libc/machine/arm/strcpy.c: New file.
        * libc/machine/arm/strcmp.c: New file.
        * libc/machine/arm/Makefile.am: Add new string routines.
 2009-01-22 00:02:35 +00:00