diff options
Diffstat (limited to 'newlib/libc/sys/linux/brk.c')
-rw-r--r-- | newlib/libc/sys/linux/brk.c | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/newlib/libc/sys/linux/brk.c b/newlib/libc/sys/linux/brk.c deleted file mode 100644 index f61a0c3..0000000 --- a/newlib/libc/sys/linux/brk.c +++ /dev/null @@ -1,41 +0,0 @@ -/* libc/sys/linux/brk.c - Change data segment size */ - -/* Written 2000 by Werner Almesberger */ - - -#include <stddef.h> /* for NULL */ -#include <sys/types.h> -#include <sys/unistd.h> -#include <sys/syscall.h> - - -static char *curr_brk = NULL; - - -#define __NR___brk __NR_brk /* Linux brk ain't no brk(2) */ - -static _syscall1(void *,__brk,void *,end_data_segment) - - -int brk(void *end_data_segment) -{ - char *new_brk; - - new_brk = __brk(end_data_segment); - if (new_brk != end_data_segment) return -1; - curr_brk = new_brk; - return 0; -} - - -void *sbrk(size_t increment) /* SHOULD be ptrdiff_t */ -{ - char *old_brk,*new_brk; - - if (!curr_brk) curr_brk = __brk(NULL); - new_brk = __brk(curr_brk+increment); - if (new_brk != curr_brk+increment) return (void *) -1; - old_brk = curr_brk; - curr_brk = new_brk; - return old_brk; -} |