diff options
Diffstat (limited to 'libgloss/spu/sbrk.c')
| -rw-r--r-- | libgloss/spu/sbrk.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/libgloss/spu/sbrk.c b/libgloss/spu/sbrk.c deleted file mode 100644 index 00c8d9772..000000000 --- a/libgloss/spu/sbrk.c +++ /dev/null @@ -1,82 +0,0 @@ -/* -(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> -#include <spu_intrinsics.h> - -extern caddr_t _end; -#define STACKSIZE 4096 - -void * -sbrk (ptrdiff_t increment) -{ - static caddr_t heap_ptr = NULL; - caddr_t base; - vector unsigned int sp_reg, sp_delta; - vector unsigned int *sp_ptr; - caddr_t sps; - - /* The stack pointer register. */ - volatile register vector unsigned int sp_r1 __asm__("1"); - - if (heap_ptr == NULL) - heap_ptr = (caddr_t) & _end; - - sps = (caddr_t) spu_extract (sp_r1, 0); - if (((int) sps - STACKSIZE - (int) heap_ptr) >= increment) - { - base = heap_ptr; - heap_ptr += increment; - - sp_delta = (vector unsigned int) spu_insert (increment, spu_splats (0), 1); - - /* Subtract sp_delta from the SP limit (word 1). */ - sp_r1 = spu_sub (sp_r1, sp_delta); - - /* Fix-up backchain. */ - sp_ptr = (vector unsigned int *) spu_extract (sp_r1, 0); - do - { - sp_reg = *sp_ptr; - *sp_ptr = (vector unsigned int) spu_sub (sp_reg, sp_delta); - } - while ((sp_ptr = (vector unsigned int *) spu_extract (sp_reg, 0))); - - return (base); - } - else - { - errno = ENOMEM; - return ((void *) -1); - } -} |