From 98cc58e2c71284c1f56cf27758091f6f1d7992bf Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Mon, 29 Jul 2013 16:31:42 -0400
Subject: runtime: fix timediv calls on NetBSD, OpenBSD

Document endian-ness assumption.

R=dvyukov
CC=golang-dev
https://golang.org/cl/12056044
---
 src/pkg/runtime/os_linux.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/pkg/runtime/os_linux.c')

diff --git a/src/pkg/runtime/os_linux.c b/src/pkg/runtime/os_linux.c
index 038208b60c..d940c9765b 100644
--- a/src/pkg/runtime/os_linux.c
+++ b/src/pkg/runtime/os_linux.c
@@ -48,6 +48,7 @@ runtime·futexsleep(uint32 *addr, uint32 val, int64 ns)
 		runtime·futex(addr, FUTEX_WAIT, val, nil, nil, 0);
 		return;
 	}
+	// NOTE: tv_nsec is int64 on amd64, so this assumes a little-endian system.
 	ts.tv_nsec = 0;
 	ts.tv_sec = runtime·timediv(ns, 1000000000LL, (int32*)&ts.tv_nsec);
 	runtime·futex(addr, FUTEX_WAIT, val, &ts, nil, 0);
-- 
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