create arch-generic brk() based on blackfin one

1 files changed, 32 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/brk.c b/libc/sysdeps/linux/common/brk.c
new file mode 100644
index 000000000..18836ba59
--- /dev/null
+++ b/libc/sysdeps/linux/common/brk.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+libc_hidden_proto(brk)
+
+#define __NR___syscall_brk __NR_brk
+static inline _syscall1(void *, __syscall_brk, void *, end)
+
+/* This must be initialized data because commons can't have aliases.  */
+void * __curbrk attribute_hidden = 0;
+
+int brk(void *addr)
+{
+	void *newbrk = __syscall_brk(addr);
+
+	__curbrk = newbrk;
+
+	if (newbrk < addr) {
+		__set_errno (ENOMEM);
+		return -1;
+	}
+
+	return 0;
+}
+libc_hidden_def(brk)