diff options
Diffstat (limited to 'libgo/go/runtime/mmap.go')
| -rw-r--r-- | libgo/go/runtime/mmap.go | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libgo/go/runtime/mmap.go b/libgo/go/runtime/mmap.go index a0768428b40..53617e41e4a 100644 --- a/libgo/go/runtime/mmap.go +++ b/libgo/go/runtime/mmap.go @@ -1,4 +1,4 @@ -// Copyright 2015 The Go Authors. All rights reserved. +// Copyright 2015 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. @@ -12,5 +12,8 @@ package runtime import "unsafe" -// mmap calls the mmap system call. It is implemented in assembly. +// mmap calls the mmap system call. It is implemented in assembly. +// We only pass the lower 32 bits of file offset to the +// assembly routine; the higher bits (if required), should be provided +// by the assembly routine as 0. func mmap(addr unsafe.Pointer, n uintptr, prot, flags, fd int32, off uint32) unsafe.Pointer |