1 files changed, 54 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/vax/brk.c b/libc/sysdeps/linux/vax/brk.c
new file mode 100644
index 000000000..bd49e19fe
--- /dev/null
+++ b/libc/sysdeps/linux/vax/brk.c
@@ -0,0 +1,54 @@
+/* brk system call for Linux/VAX.
+   Copyright (C) 2000, 2005 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 <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+/* This must be initialized data because commons can't have aliases.  */
+void *__curbrk = NULL;
+
+libc_hidden_proto(brk)
+int
+brk (void *addr)
+{
+	register unsigned long int result __asm__ ("%%r0");
+
+	asm (
+	"	pushl	%%ap		\n"	/* Start frame				*/
+	"	pushl	%2		\n"	/* New top address we wish to get	*/
+	"	pushl	$1		\n"	/* One argument				*/
+	"	movl	%%sp, %%ap	\n"	/* Finish frame				*/
+	"	chmk	%1		\n"	/* Perform the system call		*/
+	"	addl2	$8, %%sp	\n"	/* Remove pushed arg			*/
+	"	movl	(%%sp)+, %%ap	\n"	/* Get back %AP				*/
+	: "=r" (result)
+	: "0" (__NR_brk),
+	  "g" (addr));
+
+	if ((void *) result < addr) {
+		__set_errno (ENOMEM);
+		return -1;
+	} else
+		__curbrk = (void *) result;
+
+	return 0;
+}
+libc_hidden_def(brk)
+