diff options
Diffstat (limited to 'sysdeps/standalone/brk.c')
-rw-r--r-- | sysdeps/standalone/brk.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/sysdeps/standalone/brk.c b/sysdeps/standalone/brk.c new file mode 100644 index 0000000000..67fbf771a0 --- /dev/null +++ b/sysdeps/standalone/brk.c @@ -0,0 +1,65 @@ +/* Copyright (C) 1991, 1994, 1995 Free Software Foundation, Inc. + Ported to standalone by Joel Sherrill jsherril@redstone-emh2.army.mil, + On-Line Applications Research Corporation. + +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <stdlib.h> + +PTR __curbrk; +PTR __rorig; +PTR __rlimit; + +int +DEFUN(__brk, (inaddr), PTR inaddr) +{ + + if ( ( (void *)inaddr > (void *)__rlimit ) || + ( (void *)inaddr < (void *)__rorig ) ) + return -1; + + __curbrk = inaddr; + return 0; +} + +/* Initialization Code for Memory Allocation */ + +PTR __C_heap_start; +int __C_heap_size; + +#ifdef HAVE_GNU_LD +static +#endif +void +DEFUN(__NONE_set_memvals, (argc, argv, envp), + int argc AND char **argv AND char **envp) +{ + + __rorig = + __curbrk = __C_heap_start; + __rlimit = __curbrk + __C_heap_size; + + (void) &__NONE_set_memvals; /* Avoid "defined but not used" warning. */ +} + +#ifdef HAVE_GNU_LD +text_set_element (__libc_subinit, __NONE_set_memvals); +#endif + +weak_alias (__brk, brk) |