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| author | Rick Hudson <rlh@golang.org> | 2016-04-27 18:19:16 -0400 |
|---|---|---|
| committer | Rick Hudson <rlh@golang.org> | 2016-04-27 18:46:52 -0400 |
| commit | 23aeb34df172b17b7bfaa85fb59ca64bef9073bb (patch) | |
| tree | a8ab866f1e50f0059856ce628f036d93ab620155 /src/runtime/os_linux_arm64.go | |
| parent | 1354b32cd70f2702381764fd595dd2faa996840c (diff) | |
| parent | d3c79d324acd7300b6f705e66af8ca711af00d9f (diff) | |
| download | go-23aeb34df172b17b7bfaa85fb59ca64bef9073bb.tar.xz | |
[dev.garbage] Merge remote-tracking branch 'origin/master' into HEAD
Change-Id: I282fd9ce9db435dfd35e882a9502ab1abc185297
Diffstat (limited to 'src/runtime/os_linux_arm64.go')
| -rw-r--r-- | src/runtime/os_linux_arm64.go | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/runtime/os_linux_arm64.go b/src/runtime/os_linux_arm64.go index 3f994f128b..43262aea14 100644 --- a/src/runtime/os_linux_arm64.go +++ b/src/runtime/os_linux_arm64.go @@ -4,13 +4,19 @@ package runtime -const ( - _AT_NULL = 0 - _AT_RANDOM = 25 // introduced in 2.6.29 -) - var randomNumber uint32 +func archauxv(tag, val uintptr) { + switch tag { + case _AT_RANDOM: + // sysargs filled in startupRandomData, but that + // pointer may not be word aligned, so we must treat + // it as a byte array. + randomNumber = uint32(startupRandomData[4]) | uint32(startupRandomData[5])<<8 | + uint32(startupRandomData[6])<<16 | uint32(startupRandomData[7])<<24 + } +} + //go:nosplit func cputicks() int64 { // Currently cputicks() is used in blocking profiler and to seed fastrand1(). |