1 files changed, 37 insertions, 0 deletions
diff --git a/src/runtime/os_linux_386.go b/src/runtime/os_linux_386.go
new file mode 100644
index 000000000..c4f95804a
--- /dev/null
+++ b/src/runtime/os_linux_386.go
@@ -0,0 +1,37 @@
+// Copyright 2009 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 runtime
+
+import "unsafe"
+
+const (
+	_AT_NULL    = 0
+	_AT_RANDOM  = 25
+	_AT_SYSINFO = 32
+)
+
+var _vdso uint32
+
+//go:nosplit
+func linux_setup_vdso(argc int32, argv **byte) {
+	// skip over argv, envv to get to auxv
+	n := argc + 1
+	for argv_index(argv, n) != nil {
+		n++
+	}
+	n++
+	auxv := (*[1 << 28]uint32)(add(unsafe.Pointer(argv), uintptr(n)*ptrSize))
+
+	for i := 0; auxv[i] != _AT_NULL; i += 2 {
+		switch auxv[i] {
+		case _AT_SYSINFO:
+			_vdso = auxv[i+1]
+
+		case _AT_RANDOM:
+			startup_random_data = (*byte)(unsafe.Pointer(uintptr(auxv[i+1])))
+			startup_random_data_len = 16
+		}
+	}
+}