| /* consider this code LGPL - davidm */ |
| /* |
| * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| * |
| * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| */ |
| |
| #include <unistd.h> |
| #include <sys/syscall.h> |
| #include <errno.h> |
| |
| |
| /* This must be initialized data because commons can't have aliases. */ |
| void * __curbrk = 0; |
| |
| int brk (void *addr) |
| { |
| void *newbrk; |
| |
| __asm__ __volatile__ ("movel %2,%/d1\n\t" |
| "moveq %1,%/d0\n\t" |
| "trap #0\n\t" |
| "movel %/d0,%0" |
| :"=g" (newbrk) |
| :"i" (__NR_brk),"g" (addr) : "%d0", "%d1"); |
| |
| __curbrk = newbrk; |
| |
| if (newbrk < addr) |
| { |
| __set_errno (ENOMEM); |
| return -1; |
| } |
| |
| return 0; |
| } |
| libc_hidden_def(brk) |