diff options
Diffstat (limited to 'sysdeps/unix/arm/brk.S')
-rw-r--r-- | sysdeps/unix/arm/brk.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/unix/arm/brk.S b/sysdeps/unix/arm/brk.S new file mode 100644 index 0000000000..914e8a8bbe --- /dev/null +++ b/sysdeps/unix/arm/brk.S @@ -0,0 +1,56 @@ +/* Copyright (C) 1991, 92, 93, 95, 97, 98 Free Software Foundation, Inc. + 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> + +#ifndef SYS_brk +#define SYS_brk 17 +#endif + +.data +.globl C_SYMBOL_NAME(__curbrk) +C_LABEL(__curbrk) +#ifdef HAVE_GNU_LD + .long C_SYMBOL_NAME(_end) +#else + .long C_SYMBOL_NAME(end) +#endif + +.text +SYSCALL__ (brk, 1) +#ifdef PIC + ldr r1, 1f + ldr r2, _cb_addr +2: add r1, pc, r1 + add r1, r1, r2 +#else + ldr r1, _cb_addr +#endif + str r0, [r1] + mov r0, $0 + DO_RET (r14) +#ifdef PIC +1: .long _GLOBAL_OFFSET_TABLE_ - 2b - 8 +_cb_addr: + .long C_SYMBOL_NAME(__curbrk)(GOTOFF) +#else +_cb_addr: + .long C_SYMBOL_NAME(__curbrk) +#endif + +weak_alias (__brk, brk) |