Implement new syscall package.

Calls to library functions now use entersyscall and
exitsyscall as appropriate.  This is a first step toward
multiplexing goroutines onto threads.

From-SVN: r180345

1 files changed, 23 insertions, 0 deletions

diff --git a/libgo/go/syscall/errstr_linux.go b/libgo/go/syscall/errstr_linux.go
new file mode 100644
index 0000000..00fca80
--- /dev/null
+++ b/libgo/go/syscall/errstr_linux.go
@@ -0,0 +1,23 @@
+// errstr_rtems.go -- RTEMS specific error strings.
+
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+import "unsafe"
+
+//sysnb	strerror_r(errnum int, b []byte) (errstr *byte)
+//strerror_r(errnum int, b *byte, len Size_t) *byte
+
+func Errstr(errnum int) string {
+	a := make([]byte, 128)
+	p := strerror_r(errnum, a)
+	b := (*[1000]byte)(unsafe.Pointer(p))
+	i := 0
+	for b[i] != 0 {
+		i++
+	}
+	return string(b[:i])
+}