diff options
author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-10-14 08:39:37 +0300 |
---|---|---|
committer | Corinna Vinschen <corinna@vinschen.de> | 2015-10-19 15:10:33 +0300 |
commit | f86afe5a3ac62a92e821c764a011e1625abdd326 (patch) | |
tree | db2e6fdf1a2c1dff0aff989d197b066b427cd1ee /newlib/libc | |
parent | da60762bfeda8c48cd06dbde45b224b31a82ae57 (diff) |
C11 aligned_alloc() implementation
aligned_alloc() is implemented in terms of posix_memalign() which is
only declared in <stdlib.h> but not defined in Newlib in general. At
least Linux and RTEMS implement this function.
newlib/ChangeLog
2015-10-14 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/stdlib/Makefile.am (GENERAL_SOURCES): Add
alloc_aligned.c.c.
* libc/stdlib/Makefile.in: Regenerate.
* libc/stdlib/aligned_alloc.c: New.
Diffstat (limited to 'newlib/libc')
-rw-r--r-- | newlib/libc/stdlib/Makefile.am | 1 | ||||
-rw-r--r-- | newlib/libc/stdlib/Makefile.in | 43 | ||||
-rw-r--r-- | newlib/libc/stdlib/aligned_alloc.c | 38 |
3 files changed, 64 insertions, 18 deletions
diff --git a/newlib/libc/stdlib/Makefile.am b/newlib/libc/stdlib/Makefile.am index 5c0e14290..ead5dd190 100644 --- a/newlib/libc/stdlib/Makefile.am +++ b/newlib/libc/stdlib/Makefile.am @@ -13,6 +13,7 @@ GENERAL_SOURCES = \ _Exit.c \ abort.c \ abs.c \ + aligned_alloc.c \ assert.c \ atexit.c \ atof.c \ diff --git a/newlib/libc/stdlib/Makefile.in b/newlib/libc/stdlib/Makefile.in index f1f9e3b8c..5f21688ce 100644 --- a/newlib/libc/stdlib/Makefile.in +++ b/newlib/libc/stdlib/Makefile.in @@ -85,16 +85,17 @@ am__objects_2 = lib_a-__adjust.$(OBJEXT) lib_a-__atexit.$(OBJEXT) \ lib_a-__call_atexit.$(OBJEXT) lib_a-__exp10.$(OBJEXT) \ lib_a-__ten_mu.$(OBJEXT) lib_a-_Exit.$(OBJEXT) \ lib_a-abort.$(OBJEXT) lib_a-abs.$(OBJEXT) \ - lib_a-assert.$(OBJEXT) lib_a-atexit.$(OBJEXT) \ - lib_a-atof.$(OBJEXT) lib_a-atoff.$(OBJEXT) \ - lib_a-atoi.$(OBJEXT) lib_a-atol.$(OBJEXT) \ - lib_a-calloc.$(OBJEXT) lib_a-div.$(OBJEXT) \ - lib_a-dtoa.$(OBJEXT) lib_a-dtoastub.$(OBJEXT) \ - lib_a-environ.$(OBJEXT) lib_a-envlock.$(OBJEXT) \ - lib_a-eprintf.$(OBJEXT) lib_a-exit.$(OBJEXT) \ - lib_a-gdtoa-gethex.$(OBJEXT) lib_a-gdtoa-hexnan.$(OBJEXT) \ - lib_a-getenv.$(OBJEXT) lib_a-getenv_r.$(OBJEXT) \ - lib_a-itoa.$(OBJEXT) lib_a-labs.$(OBJEXT) lib_a-ldiv.$(OBJEXT) \ + lib_a-aligned_alloc.$(OBJEXT) lib_a-assert.$(OBJEXT) \ + lib_a-atexit.$(OBJEXT) lib_a-atof.$(OBJEXT) \ + lib_a-atoff.$(OBJEXT) lib_a-atoi.$(OBJEXT) \ + lib_a-atol.$(OBJEXT) lib_a-calloc.$(OBJEXT) \ + lib_a-div.$(OBJEXT) lib_a-dtoa.$(OBJEXT) \ + lib_a-dtoastub.$(OBJEXT) lib_a-environ.$(OBJEXT) \ + lib_a-envlock.$(OBJEXT) lib_a-eprintf.$(OBJEXT) \ + lib_a-exit.$(OBJEXT) lib_a-gdtoa-gethex.$(OBJEXT) \ + lib_a-gdtoa-hexnan.$(OBJEXT) lib_a-getenv.$(OBJEXT) \ + lib_a-getenv_r.$(OBJEXT) lib_a-itoa.$(OBJEXT) \ + lib_a-labs.$(OBJEXT) lib_a-ldiv.$(OBJEXT) \ lib_a-ldtoa.$(OBJEXT) lib_a-malloc.$(OBJEXT) \ lib_a-mblen.$(OBJEXT) lib_a-mblen_r.$(OBJEXT) \ lib_a-mbstowcs.$(OBJEXT) lib_a-mbstowcs_r.$(OBJEXT) \ @@ -149,11 +150,11 @@ lib_a_OBJECTS = $(am_lib_a_OBJECTS) LTLIBRARIES = $(noinst_LTLIBRARIES) @HAVE_LONG_DOUBLE_TRUE@am__objects_8 = strtold.lo wcstold.lo am__objects_9 = __adjust.lo __atexit.lo __call_atexit.lo __exp10.lo \ - __ten_mu.lo _Exit.lo abort.lo abs.lo assert.lo atexit.lo \ - atof.lo atoff.lo atoi.lo atol.lo calloc.lo div.lo dtoa.lo \ - dtoastub.lo environ.lo envlock.lo eprintf.lo exit.lo \ - gdtoa-gethex.lo gdtoa-hexnan.lo getenv.lo getenv_r.lo itoa.lo \ - labs.lo ldiv.lo ldtoa.lo malloc.lo mblen.lo mblen_r.lo \ + __ten_mu.lo _Exit.lo abort.lo abs.lo aligned_alloc.lo \ + assert.lo atexit.lo atof.lo atoff.lo atoi.lo atol.lo calloc.lo \ + div.lo dtoa.lo dtoastub.lo environ.lo envlock.lo eprintf.lo \ + exit.lo gdtoa-gethex.lo gdtoa-hexnan.lo getenv.lo getenv_r.lo \ + itoa.lo labs.lo ldiv.lo ldtoa.lo malloc.lo mblen.lo mblen_r.lo \ mbstowcs.lo mbstowcs_r.lo mbtowc.lo mbtowc_r.lo mlock.lo \ mprec.lo mstats.lo quick_exit.lo rand.lo rand_r.lo realloc.lo \ reallocf.lo sb_charsets.lo strtod.lo strtol.lo strtoul.lo \ @@ -353,9 +354,9 @@ top_srcdir = @top_srcdir@ AUTOMAKE_OPTIONS = cygnus INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS) GENERAL_SOURCES = __adjust.c __atexit.c __call_atexit.c __exp10.c \ - __ten_mu.c _Exit.c abort.c abs.c assert.c atexit.c atof.c \ - atoff.c atoi.c atol.c calloc.c div.c dtoa.c dtoastub.c \ - environ.c envlock.c eprintf.c exit.c gdtoa-gethex.c \ + __ten_mu.c _Exit.c abort.c abs.c aligned_alloc.c assert.c \ + atexit.c atof.c atoff.c atoi.c atol.c calloc.c div.c dtoa.c \ + dtoastub.c environ.c envlock.c eprintf.c exit.c gdtoa-gethex.c \ gdtoa-hexnan.c getenv.c getenv_r.c itoa.c labs.c ldiv.c \ ldtoa.c malloc.c mblen.c mblen_r.c mbstowcs.c mbstowcs_r.c \ mbtowc.c mbtowc_r.c mlock.c mprec.c mstats.c quick_exit.c \ @@ -648,6 +649,12 @@ lib_a-abs.o: abs.c lib_a-abs.obj: abs.c $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-abs.obj `if test -f 'abs.c'; then $(CYGPATH_W) 'abs.c'; else $(CYGPATH_W) '$(srcdir)/abs.c'; fi` +lib_a-aligned_alloc.o: aligned_alloc.c + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aligned_alloc.o `test -f 'aligned_alloc.c' || echo '$(srcdir)/'`aligned_alloc.c + +lib_a-aligned_alloc.obj: aligned_alloc.c + $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-aligned_alloc.obj `if test -f 'aligned_alloc.c'; then $(CYGPATH_W) 'aligned_alloc.c'; else $(CYGPATH_W) '$(srcdir)/aligned_alloc.c'; fi` + lib_a-assert.o: assert.c $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-assert.o `test -f 'assert.c' || echo '$(srcdir)/'`assert.c diff --git a/newlib/libc/stdlib/aligned_alloc.c b/newlib/libc/stdlib/aligned_alloc.c new file mode 100644 index 000000000..88413ce86 --- /dev/null +++ b/newlib/libc/stdlib/aligned_alloc.c @@ -0,0 +1,38 @@ +/*- + * Copyright (c) 2015 embedded brains GmbH + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdlib.h> + +void * +aligned_alloc(size_t alignment, size_t size) +{ + void *p; + int error; + + error = posix_memalign(&p, alignment, size); + + return (error == 0 ? p : NULL); +} |