From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Fri, 15 Dec 2017 09:38:53 -0500
Subject: Import newlib and create makefile

---
 newlib/libc/reent/writer.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 newlib/libc/reent/writer.c

(limited to 'newlib/libc/reent/writer.c')

diff --git a/newlib/libc/reent/writer.c b/newlib/libc/reent/writer.c
new file mode 100644
index 0000000..ac10286
--- /dev/null
+++ b/newlib/libc/reent/writer.c
@@ -0,0 +1,63 @@
+/* Reentrant versions of write system call. */
+
+#include <reent.h>
+#include <unistd.h>
+#include <_syslist.h>
+
+/* Some targets provides their own versions of this functions.  Those
+   targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS.  */
+
+#ifdef _REENT_ONLY
+#ifndef REENTRANT_SYSCALLS_PROVIDED
+#define REENTRANT_SYSCALLS_PROVIDED
+#endif
+#endif
+
+#ifndef REENTRANT_SYSCALLS_PROVIDED
+
+/* We use the errno variable used by the system dependent layer.  */
+#undef errno
+extern int errno;
+
+/*
+FUNCTION
+	<<_write_r>>---Reentrant version of write
+	
+INDEX
+	_write_r
+
+ANSI_SYNOPSIS
+	#include <reent.h>
+	long _write_r(struct _reent *<[ptr]>,
+		      int <[fd]>, const void *<[buf]>, size_t <[cnt]>);
+
+TRAD_SYNOPSIS
+	#include <reent.h>
+	long _write_r(<[ptr]>, <[fd]>, <[buf]>, <[cnt]>)
+	struct _reent *<[ptr]>;
+	int <[fd]>;
+	char *<[buf]>;
+	size_t <[cnt]>;
+
+DESCRIPTION
+	This is a reentrant version of <<write>>.  It
+	takes a pointer to the global data block, which holds
+	<<errno>>.
+*/
+
+long
+_write_r (ptr, fd, buf, cnt)
+     struct _reent *ptr;
+     int fd;
+     _CONST _PTR buf;
+     size_t cnt;
+{
+  long ret;
+
+  errno = 0;
+  if ((ret = _write (fd, buf, cnt)) == -1 && errno != 0)
+    ptr->_errno = errno;
+  return ret;
+}
+
+#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
-- 
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