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2006-08-16 Joel Schopp <jschopp@austin.ibm.com>

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*  configure.in: Add spu support.
        *  configure: Regenerated.
        *  spu/Makefile.in: New file.
        *  spu/aclocal.m4: Ditto.
        *  spu/configure: Ditto.
        *  spu/configure.in: Ditto.
        *  spu/crt0.c: Ditto.
        *  spu/exit.c: Ditto.
        *  spu/init.c: Ditto.
        *  spu/jsre.h: Ditto.
        *  spu/sbrk.c: Ditto.
        *  spu/syscalls.c: Ditto.
This commit is contained in:
Jeff Johnston
2006-08-16 21:15:03 +00:00
parent 8216dda89f
commit 0486bb7f0d
13 changed files with 4350 additions and 0 deletions
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63
libgloss/spu/sbrk.c Normal file
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/*
(C) Copyright IBM Corp. 2005, 2006
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.
* Neither the name of IBM nor the names of its contributors may 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 THE COPYRIGHT OWNER 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.
Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
*/
#include <sys/types.h>
#include <errno.h>
extern int errno;
extern caddr_t _end;
#define RAMSIZE 262144
#define STACKSIZE 4096
void *
sbrk (ptrdiff_t increment)
{
static caddr_t heap_ptr = NULL;
caddr_t base;
if (heap_ptr == NULL)
{
heap_ptr = (caddr_t) & _end;
}
if (((RAMSIZE - STACKSIZE) - (int) heap_ptr) >= increment)
{
base = heap_ptr;
heap_ptr += increment;
return (base);
}
else
{
errno = ENOMEM;
return ((void *) -1);
}
}