add more stub for newlib porting.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@669 bbd45198-f89e-11dd-88c7-29a3b14d5316

2 files changed, 63 insertions, 2 deletions

diff --git a/components/libc/newlib/math.c b/components/libc/newlib/math.c
new file mode 100644
index 0000000000..d86abe5877
--- /dev/null
+++ b/components/libc/newlib/math.c
@@ -0,0 +1,12 @@
+#include <math.h>

+

+/* Fix me */

+double sin(double x) 

+{

+	#warning sin function not supported for this platform

+}

+

+double cos(double x) 

+{

+	#warning cos function not supported for this platform

+}

diff --git a/components/libc/newlib/syscalls.c b/components/libc/newlib/syscalls.c
index 7768612da2..6204dafa12 100644
--- a/components/libc/newlib/syscalls.c
+++ b/components/libc/newlib/syscalls.c
@@ -1,8 +1,57 @@
 #include <reent.h>
+#include <sys/errno.h>
 
-int _fork_r (struct _reent *ptr)
+int _fork_r (struct _reent *r)
 {
 	/* return "not supported" */
-	ptr->errno = ENOTSUP;
+	r->_errno = ENOTSUP;
 	return -1;
 }
+
+_ssize_t
+_read_r (struct _reent *r, int fd, void *buf, size_t nbytes)
+{
+	_ssize_t rc;
+
+	rc = -1;
+
+	/* return "not supported" */
+	r->_errno = ENOTSUP;
+	return rc;
+}
+
+_ssize_t
+_write_r (struct _reent *r, int fd, const void *buf, size_t nbytes)
+{
+	_ssize_t rc;
+
+	rc = -1;
+
+	/* return "not supported" */
+	r->_errno = ENOTSUP;
+	return rc;
+}
+
+int
+_close_r (struct _reent *r, int fd)
+{
+	_ssize_t rc;
+
+	rc = -1;
+
+	/* return "not supported" */
+	r->_errno = ENOTSUP;
+	return rc;
+}
+
+_off_t
+_lseek_r (struct _reent *r, int fd,  _off_t offset, int whence)
+{
+	_ssize_t rc;
+
+	rc = -1;
+
+	/* return "not supported" */
+	r->_errno = ENOTSUP;
+	return rc;
+}