1 files changed, 60 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/brk.S b/sysdeps/unix/sysv/linux/alpha/brk.S
new file mode 100644
index 0000000000..afd2e3203c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/brk.S
@@ -0,0 +1,60 @@
+/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
+   Contributed by Brendan Kehoe (brendan@zen.org).
+
+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.  */
+
+/* __brk is a special syscall under Linux since it never returns an
+error.  Instead, the error condition is indicated by returning the old
+break value (instead of the new, requested one).  */
+
+#include <sysdep.h>
+#include <errnos.h>
+
+#ifndef       HAVE_GNU_LD
+#define _end           end
+#endif
+
+	.extern _end,8
+
+	.data
+
+	.globl __curbrk
+__curbrk:
+	.quad _end
+
+	.text
+ENTRY(__brk)
+	ldgp	gp, 0(t12)
+	.prologue 1
+
+	ldi	v0, __NR_brk
+	call_pal PAL_callsys
+	subq	a0, v0, t0
+	bne t0, error
+
+	/* Update __curbrk and return cleanly.  */
+	stl a0, __curbrk
+	mov zero, v0
+	ret
+
+	/* What a horrible way to die.  */
+error:	ldi	v0, ENOMEM
+	lda	pv, syscall_error
+	jmp	zero,(pv)
+
+	.end __brk
+
+weak_alias (__brk, brk)