brk implementation for ARM.

sysdeps/unix/arm/brk.S

@@ -0,0 +1,43 @@
+/* Copyright (C) 1991, 1992, 1993, 1995 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 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 <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)
+	ldr r1, _cb_addr
+	str r0, [r1]
+	mov r0, $0
+	RETINSTR(mov, pc, r14)
+_cb_addr:	.long C_SYMBOL_NAME(__curbrk)
+	
+	
+weak_alias (__brk, brk)