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author | DJ Delorie <dj@redhat.com> | 2011-11-29 06:33:49 +0000 |
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committer | DJ Delorie <dj@redhat.com> | 2011-11-29 06:33:49 +0000 |
commit | d1fc77322f7e413e2d717d006ffe0a55f913e2b2 (patch) | |
tree | 210478b0bd99a6e59257cce893040dc8e0737ecc /libgloss/rl78/sbrk.c | |
parent | 806e25759bc8e009bc7c0a53486638195dd0c578 (diff) | |
download | cygnal-d1fc77322f7e413e2d717d006ffe0a55f913e2b2.tar.gz cygnal-d1fc77322f7e413e2d717d006ffe0a55f913e2b2.tar.bz2 cygnal-d1fc77322f7e413e2d717d006ffe0a55f913e2b2.zip |
[libgloss]
* configure.in: Add rl78.
* configure: Regenerate.
* rl78: New directory
[newlib]
* configure.host: Add rl78.
* libc/include/machine/ieeefp.h: Add rl78 support.
* libc/include/machine/setjmp.h: Add rl78 support.
* libc/machine/configure.in: Add rl78.
* libc/machine/rl78: New directory.
Diffstat (limited to 'libgloss/rl78/sbrk.c')
-rw-r--r-- | libgloss/rl78/sbrk.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libgloss/rl78/sbrk.c b/libgloss/rl78/sbrk.c new file mode 100644 index 000000000..acff713fb --- /dev/null +++ b/libgloss/rl78/sbrk.c @@ -0,0 +1,57 @@ +/* + +Copyright (c) 2005, 2009 Red Hat Incorporated. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + 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. + + The name of Red Hat Incorporated may not be used to endorse + or promote products derived from this software without specific + prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 RED HAT INCORPORATED 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 <errno.h> + +char * +_sbrk (int adj) +{ + extern char end; + static char * heap = & end; + char * rv = heap; + char * heaptop = (char *) &adj; + + heap += adj; + + /* The allocated chunk spans our stack? */ + if (rv < heaptop && heap > heaptop + /* The allocated chunk spans our address space? */ + || heap < rv) + { + errno = ENOMEM; + return (char *) -1; + } + + return rv; +} + +char * sbrk (int) __attribute__((weak, alias ("_sbrk"))); |